THORLABS SPCM20A/M Single Photon Counting Modules (350-900 nm, M4 Tap)

Detector Type: Si Avalanche Photodetector

Wavelength Range: 350 nm - 900 nm

Active Detector Size: Ø20 µm

Typical Photon Detection Efficiency: 35% @ 500 nm

Dark Count Rate: 25 Hz (Typical) 60 Hz (Max)

Max Count Rate: 28 MHz

See the manual for complete specifications.



  • Quality Engagement
  • Easy change and return
  • Delivery Avaliable
  • Favorable payment