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Description

Our pyroelectric detectors are a class of room temperature thermal detectors that produce a current output that is directly proportional to the rate of change of temperature when exposed to a source of radiation.
 
They are best described by an AC current source, capacitor and resistor. Their current output is governed by the equation I = p(T)·A·dT/dt, where I is current, p(T) is the pyro coefficient, A is the area as defined by the front electrode, and dT/dt is the rate of temperature change of the pyro crystal. 
 
The advantages of a pyroelectric detector over other IR detectors are: room temperature operation, broad spectral response, high sensitivity (D*) and fast response (sub-nsec into 50 Ω). 
  
Our passive discrete pyroelectric detectors range from 1 to 9 mm in diameter and are provided in two configurations: high sensitivity or high average power. They present a pyroelectric detector element covered with our metallic coating (MT) and are packaged in a miniature TO-5 or TO-8 can. The diagram shown left identifies the pin-out for both types of detectors. 
  
Our organic black coating (BL), increases the optical absorption and helps flatten the spectral response. We also offer a number of permanent IR Windows that can be added to the TO can. These discrete pyro detectors are ideal for pulsed laser applications.

Gentec-EO Discrete Pyroelectric Sensor QS9-IF

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Specifications

Detector Type: Pyroelectric
Spectral Range: 0.1 – 1000 um
Size: 9 mm
Maximum Power: 0.05 W
Noise Equivalent Power: 0.16 uW
Max Average Power Density: 5.0E-5 kW/cm2
Maximum Average Power: 50 mW
Spectral Range: 0.1 - 1000 μm
Current Responsivity: 0.25 μA/W
Thermal Frequency: 0.25 Hz
Voltage Responsivity: 25 V/W
Feedback Resistor: 100 MΩ
Supply Voltage: ±12 V
Aperture Diameter: 9 mm
Dimensions: 15.2Ø x 6.4D mm
Weight: 0.0015 kg
Package: TO8

Got questions about specs? Use the inquiry form to ask.

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Features

  • Broad Spectral Response: Covers a wide range from 0.1 to 1000 µm, making it versatile for various applications.
  • Four Product Families:
    • QS-L: Discrete pyro detectors with low noise level.
    • QS-H: Discrete pyro detectors designed for high average power.
    • QS-IF: Hybrid pyro detectors in current mode with fast response.
    • QS-IL: Hybrid pyro detectors in current mode with low noise level.
  • Easy to Integrate: Available in TO5 and TO8 packages, making them compact and easy to incorporate into existing systems.
  • Large Area Sensors: Features 5 mm and 9 mm diameter pyroelectric sensors for easier optical alignment.
  • Multiple IR Window Options:
    • Quartz: 0.2 – 3.5 µm
    • Barium Fluoride: 0.2 – 17.5 µm
    • Sapphire: 0.1 – 7.0 µm
    • Silicon: 1.2 – 9.0 µm and 22 – 100 µm
    • AR Germanium: 1.8 – 23 µm (10.6 µm peak)
  • Measurement Capabilities:
    • Maximum Average Power: 50 mW
    • Noise Equivalent Power: 160 nW
    • Current Responsivity: 0.25 μA/W
    • Thermal Frequency: 0.25 Hz
    • Voltage Responsivity: 25 V/W
    • Feedback Resistor: 100 MΩ
    • Supply Voltage: ±12 V
  • Physical Characteristics:
    • Aperture Diameter: 9 mm
    • Absorber: MT

Applications

  • Thermal measurements
  • Laser optics
  • Metrology
  • Inspection
  • Biomedical
  • Military

Frequently Asked Questions

What are the advantages of a pyroelectric detector over other IR detectors?
Pyroelectric detectors have room temperature operation, broad spectral response, high sensitivity, and fast response.
What are the dimensions of the Gentec-EO Discrete Pyroelectric Sensor QS9-IF?
The QS9-IF comes in two configurations: high sensitivity or high average power and ranges from 1 to 9 mm in diameter.
What are the measurement capabilities of the QS9-IF?
The QS9-IF has a maximum average power of 50 mW, noise equivalent power of 160 nW, spectral range of 0.1 - 1000 μm, and current responsivity of 0.25 μA/W.
What are the physical characteristics of the QS9-IF?
The QS9-IF has an aperture diameter of 9 mm, absorber MT, dimensions of 15.2Ø x 6.4D mm, and weight of 0.0015 kg. It is packaged in a TO8 can.
What is a pyroelectric sensor?
A pyroelectric sensor is a thermal detector that produces a current output proportional to the rate of change of temperature when exposed to radiation.

Got more questions? Use the inquiry form to ask the supplier directly.

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