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Avalanche Photodiodes (APD)
  The GCS 2.5G APD (avalanche photodiode) chip features a large 55µm front-side illuminated detection window for easy optical assembly. The APD has excellent reliability, low dark current at operating voltage, and high sensitivity up to -33dBm with a low-noise TIA. It is designed primarily to be used in 1310nm and 1490nm APD-TIA GPON applications that enable data transmission for the fiber-to-the-home (FTTH) market.

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Key Features
  • GCS proprietary design and process technologies
  • 55µm optical detection window
  • Backside common cathode and topside anode
  • -33dBm typical sensitivity with low-noise TIA
  • -40C to 85C operation range
  • High reliability with GCS robust 4” wafer manufacturing with fast cycle-time
  • Deliverable in GCS Known Good Die™ with 100% testing and inspection
  • Customized layout dimensions available
  • RoHS compliant

InGaAs PIN Avalanche Photodiodes - Wavelength: 1310nm and 1550nm


Data Rate

Size (um)

Die Size (Single)
(um x um)


Pad Design

Single/ Array

Data Sheet

DO323_55um_APD 2.5 55 300 x 300 150 P-top, N-bottom Single Download