C5331 series APD module is a single 5V supply APD module, which has the characteristics of high sensitivity, small size, light weight and low price. It can be used for APD evaluation, spatial light transmission, bar code readers, laser radars, optical rangefinders, optical communications and other fields.
The C5331 series APD modules from Hamamatsu provide high‑sensitivity detection with a compact, business‑card‑size board that operates from a single 5 V supply. The modules include a low‑noise current‑to‑voltage amplifier and a temperature‑compensated bias circuit that keeps gain stable across ambient temperatures.
The series offers eleven APD types with active areas from 0.2 mm to 5 mm, various wavelength options, and optional FC or SMA adapters. Electrical ratings, dimensional outlines, and connector options are detailed for each variant, along with safety notes for high‑voltage handling.
| Supply voltage | 5 V |
|---|---|
| Weight | 52 g |
| Active area range | 0.2 mm – 5 mm |
| Gain stability | +2.5 % typical at 25 ± 10 °C |
The module operates from a single 5 V supply.
The circuit board weighs only 52 g.
Gain is stabilized to as low as +2.5 % typical at ambient temperatures of 25 ± 10 °C.
Active areas range from 0.2 mm to 5 mm depending on the variant.