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Avalanche Photodetector APD-S400C
APD-S400C$1,824.72
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LBTEK's avalanche photodetector series covers silicon and indium gallium arsenide types, offering both adjustable gain and fixed gain options. They are suitable for low-light power level applications and can precisely meet various low-light detection needs. The adjustable gain series allows users to adjust the reverse bias voltage across the diode via a rotary knob on the side of the housing, thereby changing the gain level. Using a BNC-SMA signal cable, connect the photodetector's signal interface to downstream acquisition devices such as oscilloscopes. The detector's mechanical housing features SM05 internal threads and SM1 external threads on the surface, along with M4 threaded holes at the bottom for easy mounting onto posts. Each photodetector comes with a power supply.
Note: This product series includes a sleeve with SM1 internal threads, which can be removed as needed during use (both the STEP and PDF files include this sleeve).
The appearance of the fixed gain models has been updated, and both old and new appearances may be shipped randomly.
Key Features
- Spectral Response Range: 300/400-1000 nm; 900-1700 nm
- Fixed Gain / Adjustable Gain
- Free Space Optical Input
Application
Avalanche Photodetector Installation Method
| Detector Type | Indium Gallium Arsenide Detector |
| Spectral response range | 900-1700 nm |
| bandwidth | DC-400 MHz |
| rise time | 1 ns |
| Noise Equivalent Power | 16.7 µW |
| NEP (Noise Equivalent Power) | 2.0 pW/√Hz |
| photosensitive size | Ø200 μm |
| Active Area Diameter | 6.61 mm |
| gain type | Fixed Gain |
| Responsivity | 0.9 A/W @1550 nm，M=1 |
| Conversion Gain | 1.8×10<sup>5</sup> V/W(High-Z)； 0.9×10<sup>5</sup> V/W(50Ω) |
| Output Bias Voltage | 3.2 V |
| Output Noise | 20 mVpp |
| Coupling Type | DC coupling |
| Operating Voltage | 9 V |
| Operating Current | <200 mA |
| Output Connector | SMA female |
| Operating Temperature | -10~65 ℃ |
| Operating Temperature | -40~85 ℃ |
| Dimensional specifications | 69.1 mm×50 mm×34.9 mm |
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