From Deep UV to Mid-IR

An ITW Company

IR Detectors – B SeriesHigh Performance Lead Selenide (PbSe) Single Channel
Uncooled and Cooled Devices
KEY FEATURES• Fast high sensitivity in 1-5 Micron Region• Provides High Signal to Noise Performance for
Wide Measurement Dynamic Range• Fastest Response Speed for Mid-IR Applications• High Reliability for Long Life
• Best Overall Performance for the 1-5 Micron Spectrum

The B Series single channel infrared detectors offer
the best balance of performance and attributes foranalyzing materials in the one to five-micronspectrum. The combination of high sensitivity, fast
response time, and industry leading reliability assure
consistent performance where and when it is needed.
High sensitivity maximizes measurement dynamic
range for applications with trace elements. Real-timemeasurements are easily supported with the B Series
fast response time. High durability and long life
minimize repair and maintenance costs. With the goalof optimizing your system’s performance, Opto Diodeis committed to providing high quality, reliable
products.
Available in a variety of standard configurations,customers can choose an assortment of options suchas element size, cooling alternatives, and package
type to suit a variety of system and application
requirements. Cooled units provide additional
sensitivity for very low-level signal detection andenhanced stability for environments where
temperatures are in constant flux.

Revision December 5, 2023

Opto Diode has been manufacturing and selling highperformance PbS and PbSe infrared detectors forover 25 years. Having established a reputation forhighlycontrolled
manufacturing
processes,
customers can rely on consistent, repeatableperformance and superior customer service.
Supporting all stages of development, from early
prototyping to high volume production, Opto Diode isdedicated to helping customers develop marketleading instruments. Custom requirements can beaddressed by contacting the Opto Diode sales team.
Applications• Gas analysis– Medical– Industrial•••••

Emissions monitoring
Spectroscopy
Process control systems
Thermal imaging
Defense and security

Page 1 of 9

From Deep UV to Mid-IR

An ITW Company

IR Detectors – B SeriesHigh Performance Lead Selenide (PbSe) Single Channel
Uncooled and Cooled Devices

B Series Specifications
Model #Part #Description - Size

PackageType

BXP Series - Uncooled PbSe Packaged IR Detectors

ActiveElementArea(mm2)ElementOperating
Temp.
(°C)

Peak
Sensitivity
Wavelengthʎp (µm)Responsivity1
ʎp, 1000 Hz(V/W)

D*
ʎp, 1000 Hz,1Hz(cm HZ1/2 W-1)

Resistance
(MΩ)

Time
Constant(µsec)

Window Type

Absolute Ratings
Storage &Operating
Temperature(°C)2,3Flat Sapphire-40 to +85

Typ.

Ambient 23

Min.

Typ.

Min.

Typ.

Min.

Typ.

Range

Typ.

Max.

BXP-15E

40785

1 mm x 1 mm

TO5

1+233.6

3.8

7.0x1092.0x1010

1.5x104

3.0x104

0.7 - 1.525BXP-25M40573

2 mm x 2 mm

TO54+233.6

3.8

1.0x1010 2.0x1010

7.5x1031.5x104

0.1 - 2.525ARSi-40 to +85

BXP-35E40055

3 mm x 3 mm

TO59+233.6

3.8

2.65x109 1.5x1010 4.75x103

1.5x104

0.5 - 1.75

25Flat Sapphire-40 to +85

40.5 - 1.0

252.4 µm Longpass
Ge Filter-40 to +85

BXP-35F40333

3 mm x 3 mmTO5BXT1 Series - One Stage Cooled PbSe Packaged IR Detectors

9+233.6

3.8

5.0x10Typ.

Ambient 25Min.

Typ.

Min.

9

1.5x1010

Typ.
10Min.

Range

Typ.

Max.

2.0x1043.0x1040.5-10.0

612

Flat Sapphire-40 to +85

1.3x104

2.0x104

0.5-10.0612

Flat Sapphire-40 to +85

Min.

Typ.

Range

Typ.

Max.

4405212 mm x 2 mm

TO84-25

4.04.2

1.4x10

BXT1-37T

40136

3 mm x 3 mm

TO37

9-25

4.04.2

1.4x1010 2.8x1010

Typ.

Ambient 25

Min.

Typ.

Min.

Typ.
10

1.0x1010

BXT1-28TE

BXT2 Series - Two Stage Cooled PbSe Packaged IR Detectors

2.8x106.0x10

3Typ.

Range

Range

Range

BXT2-17T

40174

1 mm x 1 mm

TO371-35

4.1

4.3

1.6x10-6.6x10-1.0 - 15.0814

Flat Sapphire-40 to +85

BXT2-17TF

40065

1 mm x 1 mm

TO371-30

4.3

4.7

2.4x1010-

1.2x105-

1.5 - 7.0814

4.7 µm Bandpass
Si Filter-40 to +85

BXT2-2740587

2 mm x 2 mm

TO374-30

4.1

4.3

1.8x1010-

3.0x104-

1.0 - 4.5814

Flat Sapphire-40 to +85

BXT2-37T

40071

3 mm x 3 mm

TO379-35

4.1

4.3

1.6x1010-2.2x104-

1.0 - 15.0

814

Flat Sapphire-40 to +8510

3.5x10105.0x10

47.5x10

4BXT2S-28T

40186

2 mm x 2 mm

TO84-454.3

4.5

2.0x101.0 - 15.01225

Flat Sapphire-40 to +85

BXT2S-38T

40203

3 mm x 3 mm

TO89-454.3

4.5

2.0x1010 3.5x1010

3.3x104

5.0x104

1.0 - 15.01225

Flat Sapphire-40 to +85

BXT2S-68TE

40076

6 mm x 6 mm

TO836-25

4.3

4.5

1.5x1010

1.65x1042.5x104

1.0 - 15.01225

Flat Sapphire-40 to +85-1 Specifications apply at a bias voltage (Vbias) of 25 V/mm for cooled and 35 V/mm for uncooled detectors with either a 1 MΩ or 0.5 MΩ load resistor in series.
2 Specifications apply at maximum cooling with a heat sink at +25 °C. Typical cooler power at max cooling: BXT1 0.8 V @ 1.5 A, BXT2 0.8 V @ 1.2 A, BX2S 1.9 V @ 1.2 A.
3 Max rated element temperature is 85 °C.

Revision April 30, 2023

Page 2 of 9From Deep UV to Mid-IR

IR Detectors – B SeriesHigh Performance Lead Selenide (PbSe) Single Channel
Uncooled and Cooled Devices

An ITW CompanyDetector Biasing
Vbias+ VL –+Vd–Vbias – Bias Voltage
VL – Load Voltage
Vd – Detector Voltage

Detector Spectral Response

Relative D* Values

10PbS–25C0C
25C
50C

1PbSe

50C
25C
0C

0.1

–25C

0.01

0123
Wavelength (µm)

456

Typical S/N vs Detector Voltage at 25 °C for a 2 mm x 2 mm Detector
80

870

76Signal

50

540

4S/N

303202
Noise100

Revision December 5, 2023

Noise (µV)

R Signal (µV)

601010203040Detector Voltage Vd (VDC)

5060700Page 3 of 9

From Deep UV to Mid-IR

An ITW Company

IR Detectors – B SeriesHigh Performance Lead Selenide (PbSe) Single Channel
Uncooled and Cooled Devices

TO5 Packages
40333

Package and Pin Out Information
Pin No.
12Function
Detector
Detector/Gnd

40055, 42413

Pin No.
123Revision December 5, 2023

Function
Detector
Case Gnd
Detector

Color
BareBareBare

Page 4 of 9

From Deep UV to Mid-IRAn ITW Company

IR Detectors – B SeriesHigh Performance Lead Selenide (PbSe) Single Channel
Uncooled and Cooled Devices

40785

Pin No.
123

Function
Detector
Case/Gnd
Detector

TO8 Packages
40070

Pin No.
149101112Revision December 5, 2023

Function
Cooler (–)
Cooler (+)
Detector
Thermistor
Thermistor
Detector

Page 5 of 9

From Deep UV to Mid-IR

An ITW Company

IR Detectors – B SeriesHigh Performance Lead Selenide (PbSe) Single Channel
Uncooled and Cooled Devices

40076, 40186, 40203

Pin No.
149101112

Function
Cooler (–)
Cooler (+)
Detector
Thermistor
Thermistor
Detector

Pin No.
149101112Function
Cooler (–)
Cooler (+)
Detector
Thermistor
Thermistor
Detector

40521

Revision December 5, 2023

Page 6 of 9

From Deep UV to Mid-IR

An ITW Company

IR Detectors – B SeriesHigh Performance Lead Selenide (PbSe) Single Channel
Uncooled and Cooled Devices

TO37 Packages
40065

Pin No.
126789Function
Thermistor
Thermistor
Detector
Detector
Cooler (–)
Cooler (+)

40071, 40174

Pin No.
126789

Revision December 5, 2023

Function
Thermistor
Thermistor
Detector
Detector
Cooler (–)
Cooler (+)

Page 7 of 9

From Deep UV to Mid-IR

An ITW Company

IR Detectors – B SeriesHigh Performance Lead Selenide (PbSe) Single Channel
Uncooled and Cooled Devices

40136

Pin No.
126789Revision December 5, 2023

Function
Thermistor
Thermistor
Detector
Detector
Cooler (–)
Cooler (+)

Page 8 of 9

From Deep UV to Mid-IR

An ITW Company

IR Detectors – B SeriesHigh Performance Lead Selenide (PbSe) Single Channel
Uncooled and Cooled Devices

40587

Pin No.
126789Function(Removed)(Removed)
Detector
Detector
Cooler (–)
Cooler (+)

1260 Calle Suerte, Camarillo, California 93012
Phone: +1 805.499.0335 | Fax: +1 805.499.8108 | sales@optodiode.com | www.optodiode.com
Revision December 5, 2023

Page 9 of 9