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    • Uncooled PbSe Photoconductive Detector     


    The LD-PD PbSe Series consists of high-sensitivity photoconductive detectors designed for the mid-infrared (MIR) spectral range. These detectors are optimized for gas analysis, flame detection, and environmental monitoring, offering a cost-effective solution with high stability.



    Product model


    Name Model Price
    5x5mm Uncooled PbSe Photoconductive Detector   [PDF]  [RFQ]

    LP-58TO8     		[Please inquire]
     Call us 
    3x3mm Uncooled PbSe Photoconductive Detector   [PDF]  [RFQ]

    LP-35TO5     		[Please inquire]
     Call us 
    2x2mm Uncooled PbSe Photoconductive Detector   [PDF]  [RFQ]

    LP-25TO5     		[Please inquire]
     Call us 
    1x1mm Uncooled PbSe Photoconductive Detector   [PDF]  [RFQ]

    LP-15TO5     		[Please inquire]
     Call us 

    Parameter


    Features

    ● Spectral Range: Highly sensitive from 1.0 μm to 5.0 μm, with peak response typically around 3.8 μm to 4.2 μm.

    ● Operating Principle: Photoconductive mode with negative bias capability.

    ● Packaging: Standard TO-46 / TO-5 headers with a gold-plated Kovar finish for superior thermal management.

    ● Durability: Hermetically sealed with an optical window to ensure long-term reliability in harsh environments.

    Specifications

    Parameter

    Symbol

    Value    (Typical)

    Unit

    Active Area Size

    A

    2X2(Customizable)

    mm

    Peak Wavelength

    λ

    3.8   – 4.4

    μm

    Peak Detectivity

    D*

    ≥1X1010

    cm*√Hz/w

    Responsivity

    Rv

    ≥1X105

    V/W

    Dark Resistance

    Rd

    0.2   – 2.0

    MΩ

    Time Constant

    Τ.

    ≤50

    μs


    Typical Amplified Circuit

    unCooled PbSe Photoconductive Detector1.png


    Uncooled PbSe Detector

    PN#

    Response Range

    Activearea

    Package

    Response   Time(us)

    Peak (μm)

    Peak Response(V/W)

    Peak Normalized Detectivity (jones)*

    Dark Resistance

    (MQ   )

    LP-15TO5

    1-5um

    1×1

    TO-5

    -10

    3.85

    200-40000

    -1.5×101°

    0.1-1

    LP-25TO5

    1-5um

    2×2

    TO-5

    -10

    3.85

    500-10000

    -8×10°

    0.1-1

    LP-35TO5

    1-5um

    3×3

    TO-5

    -10

    3.85

    2500-5000

    -5×10°

    0.1-1

    LP-58TO8

    1~5um

    5×5

    TO-8

    ~10

    3.85

    800-1600

    ~2.5×10°

    0.1-1

    Measured   Test Conditions:Radiation Source: 500K Blackbody,Chopping Frequency: 1000 Hz,Bias   Voltage : 50 V,Load Resistance: Matched to Dark Resistance ,Ambient   Temperature: 298 K (25°C)

    1Jones = 1cm*√Hz/w

    Package Size

    Package with TEC--TO5

    unCooled PbSe Photoconductive Detector2.png


    Package with TEC--TO8

    unCooled PbSe Photoconductive Detector3.png










    Application

    ● Gas Sensing: NDIR (Non-Dispersive Infrared) detection for CO2, CH4, and NO.

    ● Industrial Safety: Flame and spark detection.

    ● Medical: Capnography and anesthesia gas monitoring.

    ● Environmental: Moisture and hydrocarbon analysis.



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