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Environmental Sensors

Detection and protection for critical systems

KEMET’s lineup of environmental sensors detect the condition of the environment and can be used to alert safety monitoring systems of changes in conditions. These sensors are based on the pyroelectric effect that make them lower in power consumption than traditional silicon-based sensors. Similar to how the piezoelectric effect converts mechanical energy to electrical energy when a crystalline lattice is disturbed, the pyroelectric is a crystalline lattice that converts blackbody thermal energy to electrical energy. These sensors are available in both digital and analog interfaces and address various requirements of detecting or monitoring applications.

Product Listing

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Flame Detection

QFS SMD Sensor

Applications & Benefits

QFSM SMD Sensor Module

QFSM Part Number

QFC Analog TO39 Sensor

Features and Benefits

QFS/QFC Evaluation Kit

Sensing Evaluation Kit

KEMET’s QFS pyroelectric flame sensors combine high sensitivity with fast response times and high dynamic range to ensure rapid and accurate detection of small and large flames, nearby or over larger distances. These high quality sensors, in their small SMD package, integrate a digital, current mode read-out offering high responsivity over the full frequency range of flame flicker from 3 – 30 Hz. Industry standard I²C communication enables plug-and-play connectivity to microcontrollers and allows easy tuning and calibration. Programmable gain and filtering offer maximum flexibility in system design, and various optical filter options are also available. These sensors can be connected together in a linear series for synchronized sampling across devices. Their long and maintenance-free operational lifetime and various low power modes make these sensors ideal for any smart or IoT type of applications.

Part Number	Filter	Filter BW	Use
USEQFSEA22L180	2.20 μm	Long pass	Broadband flame detection
USEQFSEA50L180	5.00 μm	Long pass	Human motion rejection
USEQFSEA391180	3.91 μm	90 nm	Rejection Channel
USEQFSEA464180	4.64 μm	180 nm	Flame channel (wide FoV)
USEQFSEA448180	4.48 μm	620 nm	Flame channel (main detector)

Features and Benefits	Field of View	Applications for Rapid Fire Detection
High sensitivity with fast response time High dynamic range Small SMD package I²C communication compatible and digital output Programmable gain and filtering Various optical filter options Integrated configurable amplifier, filter, and ADC Low power consumption		Industrial IoT General manufacturing Marine, transportation, and logistics Smart home and building Energy and power Retail Healthcare

The Flame Sensor Modules consist of a breakout board, on which a SMD flame sensor is mounted, ideal for easy evaluation and quick prototype development. A ribbon cable for flexible connection to user’s hardware or backplane and control board is included.

Part Number	Including Sensor	Filter	Filter BW	Use
USEQFSM122L100	USEQFSEA22L180	2.20 μm	Long pass	Broadband flame detection
USEQFSM150L100	USEQFSEA50L180	5.00 μm	Long pass	Human motion rejection
USEQFSM1391100	USEQFSEA391180	3.91 μm	90 nm	Rejection channel
USEQFSM1464100	USEQFSEA464180	4.64 μm	180 nm	Flame channel (wide FoV)
USEQFSM1448100	USEQFSEA448180	4.48 μm	620 nm	Flame channel (main detector)

Outfitted with all necessary components for the 1.8-3.6 V power supply of the device, all functionality of the sensor is routed out to a 10-pin 1.27mm pitch IDC connector on the back side of the 16 x 13.8 mm PCB. The build height including the socket is 9 mm. They provide up to 1 MHz Fast Mode+ I²C communication to configure the sensor and read data from it.

Pin	Symbol	Type
1	V_supply	Power supply
2	Unassigned	–
3	SCL (I²C)	Digital in/out
4	SDA (I²C)	Digital in/out
5	CS	Digital in
6	INT	Digital out
7	SYNC	Digital in/out
8	CLK	Digital in/out
9	Unassigned	–
10	GND	Ground

There is a chip select/enable pin and an interrupt output available. The CLK/SYNC pins can be used to feed an external clock signal in to the board or, alternatively, distribute the clock signal of one board to several other boards, thereby creating a synchronized “network” of sensors.

Part Number	Use	Type
USEQCSK0000000	Control board for modules	Preassembled backplane PCB USB communications cable Ribbon cable, optional use (up to 4)

USEQCSK0000000 can flexibly host up to four modules. With no hardware design work required, a combination of this backplane board and any of the attached SMD sensors can produce infrared sensor signal measurements out of the box in the early evaluation and design stages. This control board is provided with PC software allowing the user to configure and read out each of the SMD sensors connected. The sensor data is visualised in real time on a scope plot in the user interface. A csv file capture facility records the digital signals from the sensors for further processing by the user.

Click here to view the Backplane Board USEQCSK0000000 Quick Start Guide.

Click here to download the Software Package for the Sensor Evaluation Tool.

KEMET’s QFC pyroelectric flame sensors provide accurate discrimination of flame sources in triple IR flame detection systems, through their excellent signal to noise characteristic at the signature 8 – 10 Hz flicker range of a flame. The sensor element is built into a low noise circuit that has an internal CMOS op amp with a 10 GΩ feedback resistor outputting a voltage signal centered around half the supply rail. Exceptionally high responsivity, a wide field of view and rapid recovery from thermal and electrical shocks makes it the ideal solution for demanding flame detection applications.

Part Number	Filter	Cut On Wavelength	Cut Off Wavelength
USEQFCSA338100	3.38 μm bandpass	3.295 μm typical	3.475 μm typical
USEQFCSA391100	3.91 μm bandpass	3.865 μm typical	3.955 μm typical
USEQFCSA435100	4.35 μm bandpass	4.05 μm typical	4.65 μm typical
USEQFCSA448100	4.48 μm bandpass	4.17 μm typical	4.79 μm typical
USEQFCSA455100	4.55 μm bandpass	4.34 μm typical	4.76 μm typical
USEQFCSA500100	5.00 μm cut on	5.0 μm typical	–
USEQFCSA550100	5.50 μm cut on	5.5 μm typical	–

Features and Benefits	Applications for Rapid Fire Detection
Exceptionally high responsivity Wide field of view angle, typically 100° Rapid recovery from thermal and electrical shock, <1 second downtime TO39 package Analog output Integrated operational amplifier	Industrial General manufacturing Chemical production Oil and gas Marine, transportation, and logistics Energy and power Healthcare Infrastructure protection Forest protection
Field of View

Features and Benefits

Applications for Rapid Fire Detection

Exceptionally high responsivity
Wide field of view angle, typically 100°
Rapid recovery from thermal and electrical shock, <1 second downtime
TO39 package
Analog output
Integrated operational amplifier

Industrial
General manufacturing
Chemical production
Oil and gas
Marine, transportation, and logistics
Energy and power
Healthcare
Infrastructure protection
Forest protection

Field of View

To allow for further in-depth testing of these flame sensing and detection solutions, KEMET is proposing 2 evaluation kits, a digital one and an analog one. The purpose of these kits is to enable engineers and technicians to carry out simple and effective evaluation of KEMET flame sensors, experiment with the sample flame detection ratio based algorithm, and to capture measured data to a PC through the KEMET Flame Sensing Evaluation Tool software.

	Part Number	Use	Includes
	USEQFSK1000000	SMD Flame Sensing Evaluation Kit	USEQFS prototype flame sensing detector 4 sensors USEQFSEA50L180 1p x 5.0 µm LWP USEQFSEA391180 1p x 3.91 µm/90 nm USEQFSEA464180 1p x 4.64 µm/180 nm USEQFSEA448180 1p x 4.48 µm/620 nm USB communications cable

Click here to download the SMD Flame Sensing Evaluation Kit USEQFSK1000000 User Guide.

Click here to download the Software Package for the SMD Flame Sensing Evaluation Tool.

Click here to download the Software Package for the Sensor Evaluation Tool.

	Part Number	Use	Includes
	USEQFCK4000000	TO Flame Sensing Evaluation Kit	Flame detection demonstrator kit 3 sensors USEQFCSA391100 3.91 μm bandpass filter USEQFCSA435100 4.35 μm bandpass filter USEQFCSA500100 5.00 μm cut on filter 9 VDC power supply USB communications cable

Click here to download the TO Flame Sensing Evaluation Kit USEQFCK4000000 User Guide.

Click here to download the Software Package for the TO Flame Sensing Evaluation Tool.

Gas Detection

QGS SMD Sensor

Applications for Gas Detection

QGSM SMD Sensor Modul

Sensor Part Number

QGC Analog Sensor

Single Channel Sensor

QGS/QGC Evaluation Kit

Part Number

KEMET’s QGS thin film digital pyroelectric IR sensors for gas detection and concentration measurement combine high sensitivity with fast response times and high dynamic range to ensure rapid and accurate detection of target gases. These high quality sensors, in their small SMD package, integrate a digital, current mode read-out that enables lower IR-emitter duty cycles, thereby saving significantly on system level power consumption, while maintaining high SNR.

Industry standard I²C communication enables plug-and-play connectivity to microcontrollers and allows easy tuning and calibration. Programmable gain and filtering offer maximum flexibility in system design, and various optical filter options are also available. These sensors can be connected together in linear series to allow synchronized sampling across devices. Their long and maintenance-free operational lifetime makes them ideal for highly demanding automotive or medical applications.

Part Number	Filter	Filter BW	Use
USEQGSEAC82180	4.26 μm	180 nm	CO₂
USEQGSEACH4180	3.30 μm	160 nm	CH₄
USEQGSEAN8L180	5.30 μm	180 nm	NO

Below flame sensors from the QFS series can also be used for gas detection or analysis, more details about these products available on the Flame Detection section.

Part Number	Filter	Filter BW	Use
USEQFSEA391180	3.91 μm	90 nm	Reference
USEQFSEA22L180¹	2.20 μm	Long pass	Broadband
USEQFSEA50L180¹	5.00 μm	Long pass	Broadband
USEQFSEA464180²	4.64 μm	180 nm	CO

¹ Used with bespoke, customer or application-specific (narrowband) filters mounted externally.
² Used as gas or active filter.

Features and Benefits	Field of View	Applications for Gas Detection
High sensitivity with fast response time High dynamic range Small SMD package I²C communication Digital output Programmable gain and filtering Various optical filter options Integrated configurable amplifier, filter, and ADC Low power consumption		Gas and gas flues HVAC (refrigerant or CO₂-driven ventilation system) Industrial process and safety Medical capnography and anesthesia Handheld breath analysis and breath rate measurement Automotive cabin air quality Exhaust (CO₂ content) Home and building technology Environmental monitoring (ambient CO₂ level) Pollution air quality in home, office and car (excessive CO₂ level)

The Gas Sensor Modules consist of a breakout board, on which a SMD flame sensor is mounted, ideal for easy evaluation and quick prototype development. A ribbon cable for flexible connection to user’s hardware or backplane and control board is included.

Part Number	Including Sensor	Filter	Filter BW	Use
USEQGSM1C82100	USEQGSEAC82180	4.26 μm	180 nm	CO₂
USEQGSM1CH4100	USEQGSEACH4180	3.30 μm	160 nm	CH₄
USEQGSM1N8L100	USEQGSEAN8L180	5.30 μm	180 nm	NO

Below flame sensor modules from the QFSM series can also be used for gas detection or analysis, more details about these products available on the Flame Detection section.

Part Number	Including Sensor	Filter	Filter BW	Use
USEQFSM1391100	USEQFSEA391180	3.91 μm	90 nm	Reference
USEQFSM122L100	USEQFSEA22L180 ¹	2.20 μm	Long pass	Broadband
USEQFSM150L100	USEQFSEA50L180 ¹	5.00 μm	Long Pass	Broadband
USEQFSM1464100	USEQFSEA464180 ²	4.64 μm	180 nm	CO

¹Used with bespoke, customer or application-specific (narrowhead) filters mounted externally.

²Used as gas or active filter.

Pin	Symbol	Type
1	V_supply	Power supply
2	Unassigned	–
3	SCL (I²C)	Digital in/out
4	SDA (I²C)	Digital in/out
5	CS	Digital in
6	INT	Digital out
7	SYNC	Digital in/out
8	CLK	Digital in/out
9	Unassigned	–
10	GND	Ground

Part Number	Use	Type
USEQCSK0000000	Control board for modules	Preassembled backplane PCB USB communications cable Ribbon cable, optional use (up to 4)

Click here to view the Backplane Board USEQCSK0000000 Quick Start Guide.

Click here to download the Software Package for the Sensor Evaluation Tool.

KEMET’s QGC pyroelectric gas sensors can be reduced in physical size and still provide high sensitivity with fast frequency operation, enabling this highly stable 1 to 4 element sensor in a TO39 package. The sensor element is built into a low noise circuit that has an internal CMOS operational amplifier with a 10 GΩ feedback resistor outputting a voltage signal centered around half the supply rail.

Part Number	Cut On Wavelength CWL / (HPB)	Use
USEQGCCAREF100	3.91 μm / (90 nm)	Reference
USEQGCCAC82L00	4.26 μm / (180 nm)	CO₂
USEQGCCAC82S00	4.43 μm / (60 nm)	CO₂ (Special)
USEQGCCAC82N00	4.30 μm / (110 nm)	CO₂ (Narrow)
USEQGCCAC8L100	4.64 μm / (180 nm)	CO
USEQGCCAC8N100	4.64 μm / (90 nm)	CO (Narrow)
USEQGCCACH4100	3.30 μm / (160 nm)	CH₄
USEQGCCAN8L100	5.30 μm / (180 nm)	NO
USEQGCCAHC1100	3.375 μm / (190 nm)	H-C
USEQGCCAS82100	7.30 μm / (200 nm)	SO₂
USEQGCCAR12100	10.35 μm / (190 nm)	Refrigerant R12 (Freon)
USEQGCCA50L100	5.00 μm Long Pass	Broadband for bespoke filters

Part Number	Channel 1 Cut On Wavelength CWL / (HPB)	Channel 2 Cut On Wavelength CWL / (HPB)	Use
USEQGCDAC82L00	3.91 μm / (90 nm)	4.26 μm / (180 nm)	CO₂
USEQGCDAC82S00	3.91 μm / (90 nm)	4.43 μm / (60 nm)	CO₂ (Special)
USEQGCDAC82N00	3.91 μm / (90 nm)	4.30 μm / (110 nm)	CO₂ (Narrow)
USEQGCDAC82M00	3.70 μm / (110 nm)	4.26 μm / (180 nm)	CO₂ (Medical)
USEQGCDAC82100	4.90 μm / (130 nm)	4.26 μm / (180 nm)	CO₂ (Medical)
USEQGCDAC8L100	3.91 μm / (90 nm)	4.64 μm / (180 nm)	CO
USEQGCDAC8N100	3.91 μm / (90 nm)	4.64 μm / (90 nm)	CO (Narrow)
USEQGCDACH4100	3.91 μm / (90 nm)	3.30 μm / (160 nm)	CH₄
USEQGCDAN8L100	3.91 μm / (90 nm)	5.30 μm / (180 nm)	NO
USEQGCDAHC1100	3.91 μm / (90 nm)	3.33 μm / (160 nm)	H-C (1)
USEQGCDAHC2100	3.91 μm / (90 nm)	3.375 μm / (190 nm)	H-C (2)
USEQGCDAS82100	3.91 μm / (90 nm)	7.30 μm / (200 nm)	SO₂
USEQGCDAR12100	8.94 μm / (225 nm)	10.36 μm / (190 nm)	Refrigerant R12 (Freon)
USEQGCDA50L100	5.00 μm Long Pass	5.00 μm Long Pass	Broadband for bespoke filters
USEQGCDAANA100	8.44 μm / (205 nm)	4.26 μm / (180 nm)	Anesthesia
USEQGCDAN82100	3.91 μm / (90 nm)	6.20 μm / (200 nm)	NO₂
USEQGCDASF6100	3.91 μm / (90 nm)	10.6 μm / (240 nm)	SF₆, Ethylene

Part Number	Channel 1 Cut On Wavelength CWL / (HPB)	Channel 2 Cut On Wavelength CWL / (HPB)	Channel 3 Cut On Wavelength CWL / (HPB)	Channel 4 Cut On Wavelength CWL / (HPB)	Use
USEQGCQAC82H00	3.38 μm / (190 nm)	3.91 μm / (90 nm)	4.26 μm / (180 nm)	4.64 μm / (180 nm)	HC, CO, CO₂
USEQGCQAAN1100	3.90 μm / (200 nm)	3.90 μm / (200 nm)	4.26 μm / (180 nm)	8.416 μm / (180 nm)	Anesthesia (1)
USEQFCSA435100	8.75 μm / (200 nm)	9.62 μm / (230 nm)	12.25 μm / (210 nm)	8.55 μm / (180 nm)	Anesthesia (2)
USEQFCSA448100	4.26 μm / (180 nm)	4.64 μm / (180 nm)	3.30 μm / (160 nm)	3.91 μm / (90 nm)	Exhaust, Environmental

Features and Benefits	Applications for Gas Detection
Fast, stable response over a wide operating frequency range 1, 2, or 4 sensor elements in one package Rapid recovery from thermal and electrical shock, <1 second downtime TO39 package Analog output Integrated operational amplifier	Gas and gas flues HVAC (refrigerant or CO₂-driven ventilation system) Industrial process and safety Medical capnography and anesthesia Handheld breath analysis and breath rate measurement Breath actuated dispenser Automotive cabin air quality Exhaust (CO₂ content) Home and building technology Environmental monitoring (ambient CO₂ level) Pollution air quality in home, office, and car (excessive CO₂ level)

Features and Benefits

Applications for Gas Detection

Fast, stable response over a wide operating frequency range
1, 2, or 4 sensor elements in one package
Rapid recovery from thermal and electrical shock, <1 second downtime
TO39 package
Analog output
Integrated operational amplifier

Gas and gas flues
HVAC (refrigerant or CO₂-driven ventilation system)
Industrial process and safety
Medical capnography and anesthesia
Handheld breath analysis and breath rate measurement
Breath actuated dispenser
Automotive cabin air quality
Exhaust (CO₂ content)
Home and building technology
Environmental monitoring (ambient CO₂ level)
Pollution air quality in home, office, and car (excessive CO₂ level)

To allow for further in-depth testing of these gas sensing and detection solutions, KEMET is proposing 2 evaluation kits, a digital one and an analog one.

The purpose of the digital SMD CO₂ Gas Sensing Evaluation Kit is to enable engineers and technicians to carry out a simple and effective evaluation of the QGS SMD sensors, and to capture measured data to a PC through the KEMET Gas Sensing Evaluation Tool software.

	Part Number	Use	Includes
	USEQGSK3000000	SMD CO₂ Gas Sensing Evaluation Kit	PCB with STM32F303K8T6 microcontoroller USEQFSEA391180, 1 px 3.91 µm / 90 nm USEQGSEAC82180, 1 px 4.26 µm / 180 nm Emitter drive PCB, with TO39 IR emitter 3D printed gas cell Breathing tubes 9 VDC power supply USB communications cable

Click here to download the SMD CO₂ Gas Sensing Evaluation Kit USEQGSK3000000 User Guide.

Click here to download the Software Package for the SMD Gas Sensing Evaluation Tool.

Click here to download the Software Package for the Sensor Evaluation Tool.

Click here to read the App Note: SMD KEMET CO₂ Gas Sensing Evaluation Kit USEQGSK3000000 Basic Calibration.

The analog TO CO₂ Gas Sensing Evaluation kit is to enable the users to carry out a simple and effective demonstration of the QGC two channel CO₂ sensor, as well as to provide a flexible platform to start evaluation and design work with all others QGC TO-39 packaged gas sensors.

	Part Number	Use	Includes
	USEQGCK5000000	Analog TO CO₂ Gas Sensing Evaluation Kit	PCB with C8051F350 microcontroller and ADC USEQGCDAC82L00, dual channel CO₂ sensor Emitter drive PCB, with TO39 IR emitter, reflector and sapphire window Brass gas cell ¹ 9 VDC power supply USB communications cable ¹ Not gas sealed, please consider safety if used with toxic gases.

Part Number

Use

Includes

USEQGCK5000000

Analog TO CO₂ Gas Sensing Evaluation Kit

PCB with C8051F350 microcontroller and ADC
USEQGCDAC82L00, dual channel CO₂ sensor
Emitter drive PCB, with TO39 IR emitter, reflector and sapphire window
Brass gas cell ¹
9 VDC power supply
USB communications cable

¹ Not gas sealed, please consider safety if used with toxic gases.

Click here to download the Analog TO CO₂ Gas Sensing Evaluation Kit USEQGCK5000000 User Guide.

Click here to download the Software Package for the TO Gas Sensing Evaluation Tool.

Motion Detection

QMS Motion Detection

Features and Benefits

QMS SMD Sensor Module

Sensor Part Number

QMS Evaluation Kit

Part Number

KEMET’s QMS thin-film digital pyroelectric IR sensors combine high sensitivity with fast response times to ensure rapid and accurate motion detection, and high dynamic range to allow motion detection nearby or over larger distances. The 2×2 pixel version of this device allows users to determine the direction of motion. These high-quality sensors, in their small SMD package, integrate a digital, current mode read-out. Industry-standard I²C communication enables interfacing to microcontrollers and allows for easy tuning. Gain and filtering options can be optimized via the I²C interface . These sensors can be connected together in linear series to allow synchronized sampling across devices.

Part Number	Element Size	Filter Aperture	Typical NEP
USEQMSEA011680	0.41 mm²	1.65 mm	2.7 x 10^–10 W/√Hz
USEQMSEA221680	4 X 0.057 mm²	1.65 mm	0.4 x 10^–10 W/√Hz
USEQMSEA220980	4 X 0.057 mm²	0.9 mm	0.4 x 10^–10 W/√Hz

Features and Benefits	Field of View	Applications for Motion and Gesture Detection
High sensitivity with fast response time High dynamic range Small SMD package I²C communication compatible and digital output Programmable gain and filtering Various pixel and filter options Integrated configurable amplifier, filter, and ADC Ultra-low power comsumption and standby modes, motion triggered wake-up		Contactless switching Industrial automation equipment Smart home and building Lighting

The Motion and Gesture Sensor Modules consist of a breakout board, on which an SMD motion sensor is mounted, ideal for easy evaluation and quick prototype development.
A ribbon cable for flexible connection to user’s hardware or backplane and control board is included.

Part Number	Including Sensor	Filter Aperture	Element Size	Typical NEP
USEQMSM1011600	USEQMSEA011680	1.65 mm	0.41 mm²	2.7 x 10^^–10 W/√Hz
USEQMSM1221600	USEQMSEA221680	1.65 mm	4 X 0.057 mm²	0.4 x 10^^–10 W/√Hz
USEQMSM1220900	USEQMSEA220980	0.9 mm	4 X 0.057 mm²	0.4 x 10^^–10 W/√Hz

Pin	Symbol	Type
1	V_supply	Power supply
2	Unassigned	–
3	SCL (I²C)	Digital in/out
4	SDA (I²C)	Digital in/out
5	CS	Digital in
6	INT	Digital out
7	SYNC	Digital in/out
8	CLK	Digital in/out
9	Unassigned	–
10	GND	Ground

Part Number	Use	Type
USEQCSK0000000	Control board for modules	Preassembled backplane PCB USB communications cable Ribbon cable, optional use (up to 4)

Click here to view the Backplane Board USEQCSK0000000 Quick Start Guide.

Click here to download the Software Package for the Sensor Evaluation Tool.

KEMET offers 4 different evaluation kits which have the sensor products at their core, to allow for low cost, low power, non-contact mid-IR motion, presence, and gesture detection, with or without Fresnel lenses. These evaluation kits can be connected to PCs over a micro-USB port.
All evaluation systems are provided with Windows PC software, which allows sensor configuration, sensor signal visualization, and data capture to CSV, and also additional application-related functions in some cases.

Part Number	Use	Includes
USEQMSKL011600	Motion Sensor With Fresnel Lens Eval Kit	USEQMS SMD motion sensor kit Sensor USEQMSEA221680 2×2 5.0 µm LWP USB communications cable
USEQMSKL221600	Directional Motion Sensor With Fresnel Lens Eval Kit	USEQMS SMD directional motion sensor kit Sensor USEQMSEA221680 2×2 5.0 µm LWP USB communications cable
USEQMSKS221600	Long-Range Motion Sensor With Fresnel Lens Eval Kit	USEQMS prototype long range motion sensor kit Sensor USEQMSEA221680 2×2 5.0 µm LWP (large aperture) USB communications cable
USEQMSK1220900	Medium-Range Motion Sensor Kit, No Optics	USEQMS prototype motion sensor kit Sensor USEQMSEA220980 2×2 5.0 µm LWP (small aperture) USB communications cable

Download the Gesture and Motion Sensor Evaluation Kit User Guide.

Click here to download the Software Package for the Sensor Evaluation Tool.

Click here to download the Software Package for the Gesture & Motion Sensing Evaluation Tool.

Spectroscopy and Organic Compound Analysis

QDC Analog Sensor

Benefits and Applications

QDA Linear Array Sensor

Features and Benefits

QDA Sensor Evaluation Kit

KEMET’s QDC thin-film pyroelectric food sensors can be reduced in physical size and still provide high sensitivity with fast frequency operation, enabling this highly stable 2 element sensor in a TO39 package. The sensor element is built into a low noise circuit that has an internal CMOS operational amplifier with a 10 GΩ feedback resistor outputting a voltage signal centered around half the supply rail.

Part Number	Channel 1 Filter – CWL / (HPB)	Channel 2 Filter – CWL / (HPB)	Use
USEQDCDAFAT100	Fat Reference – 5.60 μm/(80 nm)	Fat – 5.73 μm/(80 nm)	Fat
USEQDCDALAC100	Lactose Reference – 7.70 μm/(140 nm)	Lactose – 9.61 μm/(150 nm)	Lactose
USEQDCDAPAL100	Protein – 6.46 μm/(130 nm)	Lactose – 9.61 μm/(150 nm)	Protein and Lactose
USEQDCDAPRT100	Protein Reference – 6.70 μm/(120nm)	Protein – 6.46 μm/(130 nm)	Protein
USEQDCDASUG100	Reference – 5.0 Long Pass	Sugar, Ethanol – 9.50 μm/(400 nm)	Sugar & Ethanol

Features and Benefits	Applications for Organic Compound Detection & Analysis
Fast, stable response over a wide operating frequency range Two sensor elements in one package Extensive IPR Protection TO39 package Analog output Integrated operational amplifier	Food (nutritional value, adulteration, decay) Breath (medical, automotive, consumer)

KEMET’s QDA line sensor arrays, or linear arrays, utilize unique thin-film pyroelectric PZT material to offer outstanding resolution and performance across a wide infrared wavelength range. The ASIC readout electronics output is a multiplexed, amplified, and filtered analog signal for each sensor element. The sensor is housed in a low-profile sealed metal package along with a temperature sensor and can be fitted within a choice of filter windows. An additional “+1” sensor element can provide higher sensitivity on a discrete wavelength, typically for lubrication oil or foodstuffs. This +1 sensor is located for ATR and transmission use.

Part Number	Number of Pixels (Sensor Elements)	Filter Type	Transmission Wavelength	Use
USEQDAAA510100	510	Broadband (AR Silicon)	–	Small spectroscope, Inspection equipment
	USEQDAAA255S00	255	Broadband (AR Silicon)	–	Small spectroscope, Inspection equipment
		USEQDAAA128S00	128	Broadband (AR Silicon)	–	IR spectrometer, Spectral analyzer
		USEQDAAA128L00	128	Linear Variable Filter	5.5 – 11.0 μm (cwl 2%)	IR spectrometer, Spectral analyzer
		USEQDAAA128500	128	Linear Variable Filter	2.5 – 5.0 μm (cwl 2%)	IR spectrometer, Spectral analyzer
			USEQDAAA128W00	128+1	Linear Variable Filter	5.5 – 11.0 μm (cwl 2%) [2.90 μm/300 nm for water content]	High SNR fat analysis
			USEQDAAA128A00	128+1	Linear Variable Filter	5.5 – 11.0 μm (cwl 2%) [2.90 μm/300 nm for fat “A” content]	High SNR fat analysis

Features and Benefits	Applications for Organic Compound Detection & Analysis
Small and light weight package Excellent resolution and performance across wide IR bandwidth Selectable broadband and LVF range Extensive IPR protection No cooling required Solid-state, no moving parts	General IR spectroscopy (protable and robust spectral engines) Lubricating oil and fuel monitoring (quality, wear, adulteration) Foodstuffs (constitution, adulteration, decay) Industrial process health and safety Non-contact temperature monitoring Blood and fluid marker detection Medical capnography

To allow for further in-depth testing, there are three different types of Linear Array demo kits.

USEQDAK6000000 Kit: Base level evaluation kit with microprocessor-controlled motherboard
USEQDAK7000000 Kit: Fixed sensor evaluation kit for ATR-based spectroscopy
USEQDAK8000000 Kit: Fixed sensor evaluation kit for transmission-based spectroscopy

Part Number	Supported Sensors	Includes
USEQDAK6000000	USEQDAAA510100 USEQDAAA255S00 USEQDAAA128S00 USEQDAAA128L00 USEQDAAA128500	Linear array evaluation board 9 VDC Power Supply USB cable
	USEQDAK7000000	USEQDAAA128S00 USEQDAAA128L00 USEQDAAA128500	Linear Array evaluation board & ATR spectrometer 9 VDC power supply USB cable
	USEQDAK7128L00	USEQDAAA128S00 USEQDAAA128L00 USEQDAAA128500	Linear Array evaluation board & ATR spectrometer USEQDAAA128L00, LVF 5.5 – 11.0 μm 9 VDC power supply USB cable
	USEQDAK7128500	USEQDAAA128S00 USEQDAAA128L00 USEQDAAA128500	Linear Array evaluation board & ATR spectrometer USEQDAAA128500, LVF 2.5 – 5.0 μm 9 VDC power supply USB cable
		USEQDAK8000000	USEQDAAA128S00 USEQDAAA128L00 USEQDAAA128500	Linear Array evaluation board & transmission spectrometer 9 VDC power supply USB cable
		USEQDAK8128L00	USEQDAAA128S00 USEQDAAA128L00 USEQDAAA128500	Linear Array evaluation board & transmission spectrometer USEQDAAA128L00, LVF 5.5 – 11.0 μm 9 VDC power supply USB cable
		USEQDAK8128500	USEQDAAA128S00 USEQDAAA128L00 USEQDAAA128500	Linear Array evaluation board & transmission spectrometer USEQDAAA128500, LVF 2.5 – 5.0 μm 9 VDC power supply USB cable