The Hamamatsu L4656 is a compact, high-sensitivity PMT module integrating a photomultiplier tube (PMT), high-voltage power supply, and signal processing circuit in a single shielded housing. Designed for low-light detection in analytical and scientific applications, it features adjustable gain, temperature stabilization, and analog output for easy system integration.
| Parameter | Specification |
|---|---|
| Photocathode Type | Ultra-bialkali (Sb-K-Na-Cs) |
| Spectral Range | 300–650 nm |
| Peak Wavelength | 420 nm |
| Cathode QE (Typ.) | 30% @ 420 nm |
| Gain Adjustment | 500–1000V (Software) |
| Output Signal | 0–10V DC (Analog) |
| Dark Current | <1 nA (Cooled) |
| Rise Time | 3 ns |
| Power Supply | +12V DC, 200 mA max |
| Operating Temp. | 0°C to +40°C |
| Dimensions | 52 × 52 × 80 mm |
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