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Silicon APD

The silicon avalanche photodiode (Si APD) has an internal gain mechanism, fast time response, low dark current and high sensitivity in the UV to near infrared region. Hamamatsu offers SI APDs with active areas ranging from 0.2mm to 5.0mm in diameter.  Our range of APDs are hermetically sealed in metal packages. Applications for APDs include optical fiber communication, spatial light transmission, low-light-level detection, high speed bar code reader, laser radar and biomedical devices.

While Avalanche photodiodes are limited to gains below 200, they have excellent quantum efficiency in the near infrared include the S8890 and S9251 series. Low bias infrared sensitive avalanche photodiodes have typical breakdown voltage of 150V. We make APDs with visible sensitivity as well. Technical data and operation of silicon avalanche photodiodes can be found in Characteristics and Use of Si APD. The article Light Levels and Noise, Guide Detector Choices is useful in determining if an APD is an appropriate detector. For ease of use we recommend an APD module that incorporate an APD, power supply and amplifier in one package. APD arrays are also available. APD's are also widely used in High Energy Physics experiments.

In weak light applications where high magnetic fields are applied an avalanche photodiode is often the only choice. Hamamatsu Photonics has specially developed avalanche photodiodes for Cern's LHC - CMS experiment to withstand very high radiation producted by the collisions during 10 years of operation of the LHC.

Hamamatsu Photonics received the CERN Award for its close collaboration and special efforts over many years to reach the goal of delivering high volume, large surface and radiation hard APD's to the CMS-Electro Magnetic Calorimeter.
 

Part Number
 
Package
 
Active
Dia./ L
mm  
Min
nm  
Max
nm  
Peak
nm  
Peak
Sens.
A/W  
Max
ID
nA  
Fc
MHz  
CT
pF  
S9717-05L      Ceramic 0.5 400 1000 800 0.5 0.1 900 3
S9717-05K      Ceramic 0.5 400 1000 800 0.5 0.1 900 3
S9717-02K      Ceramic 0.2 440 1000 800 0.5 0.05 1000 1.5
S9251-15      TO-5 1.5 440 1100 860 0.52 8 350 3.6
S9251-10      TO-5 1 440 1100 860 0.52 4 380 1.9
S9251-05      TO-18 0.5 440 1100 860 0.52 2 400 0.7
S9251-02      TO-18 0.2 440 1100 860 0.52 1 400 0.4
S9075      TO-5 1.5 200 1000 620 0.42 15 100 30
S9074      TO-18 0.5 200 1000 620 0.42 5 400 7
S9073      TO-18 0.2 200 1000 620 0.42 5 900 3
S8890-30      TO-8 3 400 1100 940 150 220 8
S8890-15      TO-5 1.5 400 1100 940 100 220 2.5
S8890-10      TO-5 1 400 1100 940 50 230 1.5
S8890-05      TO-5 0.5 400 1100 940 15 240 0.5
S8890-02      TO-5 0.2 400 1100 940 2 280 0.2
S8664-55      Ceramic 5 320 1000 600 0.24 (at 420 nm) 50 40 80
S8664-50K      TO-8 5 320 1000 600 0.24 (at 420 nm) 35 60 55
S8664-30K      TO-8 3 320 1000 600 0.24 (at 420 nm) 15 140 22
S8664-20K      TO-5 2 320 1000 600 0.24 (at 420 nm) 6 280 11
S8664-10K      TO-5 1 320 1000 600 0.24 (at 420 nm) 3 530 4
S8664-1010      Ceramic 10 320 1000 600 0.24 (at 420 nm) 100 11 270
S8664-05K      TO-5 0.5 320 1000 600 0.24 (at 420 nm) 1.5 680 1.6
S8664-02K      TO-5 0.2 320 1000 600 0.24 (at 420 nm) 1 700 0.8
S8611      TO-18 0.5 400 1000 800 0.5 1 900 3
S8550      Ceramic 1.6 320 1000 600 50 10
S6045-06      TO-8 5 400 1000 800 0.5 30 35 120
S6045-05      TO-5 3 400 1000 800 0.5 10 80 50
S6045-04      TO-5 1.5 400 1000 800 0.5 5 350 12
S6045-03      TO-18 1 400 1000 800 0.5 2 600 6
S6045-02      TO-18 0.5 400 1000 800 0.5 1 900 3
S6045-01      TO-18 0.2 400 1000 800 0.5 0.5 1000 1.5
S5345      TO-8 5 200 1000 620 0.42 100 8 320
S5344      TO-5 3 200 1000 620