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High-Performance Si APDs

The high performance rear entry “reach-through” silicon APDs offer the best compromise in terms of cost and performance for applications requiring high-speed and low-noise photon detection from 400 nm up to 1100 nm. These Si APDs feature low noise, high quantum efficiency and high gain while maintaining reasonably low operating voltage. The active area varies from 0.5 mm to 3 mm.

Additional Resources
Why should you choose Excelitas as your provider of High-Performance Si APDs?
Excelitas Technologies is an industry leader in the design and manufacture of advanced photonic solutions designed to meet our customers’ needs and create a healthier, safer and more innovative tomorrow. Pulling from decades of experience, we have built an expansive portfolio comprising PN-, PIN- and APD Photodiodes from high-quality materials to help enable our customers develop products at the forefront of technology. As part of our comprehensive photonic portfolio, we manufacture Avalanche Photodiodes (APDs) made from Silicon to create high-performance modules for applications requiring high-speed and low-noise photon detection.
What are the different uses of High-Performance Si APDs?
APDs are semiconductors designed for the detection and conversion of light signals into electrical signals. High-performance Si APDs are highly sensitive rear entry “reach-through” devices that offer top performance at a budget. These are best applied in applications that require high-speed and low-noise photon detection from 400 nm to 1100 nm. The active area in Silicon APDs varies from 0.5 mm to 3 mm and features low noise, high quantum efficiency and high gain while operating at a reasonably low operating voltage. These can be used in applications that require ultra-sensitive photon requirements, such as in biomedical and analytical instruments.
What types of Silicon APDs do you offer?
Excelitas offers a wide range of silicon APDs designed to maintain high performances at reasonably low operating voltages, offering the best compromise between cost and performance. To meet the needs and requirements of our customers, we offer a comprehensive array of silicon APD solutions, which include the following:
  • C30902SH - Si APD, 0.5mm, TO-18, Photon Counting - high-speed, large-area Silicon APDs that provide high responsivity at low noise levels.
  • C30902SH-2 - Si APD, 0.5mm, TO-18, Photon Counting, 905nm filter - high-speed, large-area Silicon APDs that provide high responsivity at low noise levels and comes with a 905 nm filter for the selective transmittance or blocking of light at 905 nm.
  • C30902SH-TC - Si APD, 0.5mm, TO-66, Photon Counting, Single-Stage Cooler - uses a single-stage thermoelectric cooler to maintain lower temperatures for various thermoelectric elements.
  • C30902SH-DTC - Si APD, 0.5mm, TO-66, Photon Counting, Dual-Stage Cooler - takes advantage of two-stage thermoelectric cooling for even higher cooling capacity.
  • C30902EH - Si APD, 0.5mm, TO-18 - high-speed, large-area Si APDs that are specially designed for low-light applications requiring typical gains larger than 100.
  • C30902EH-2 - Si APD, 0.5mm, TO-18, 905nm filter - designed for low-light applications and come with a 905nm filter to filter or block out light at 905 nm.
  • C30902BH - Si APD, 0.5mm, TO-18 Ball Lens - offered within several TO-18 package configurations, such as ball lens, flat glass, light pipe and 905 nm filter.
  • C30916EH - Si APD, 1.5mm, TO-5 Low-Profile - provides a 1.5 mm active area diameter and comes in TO-5 housing.
  • C30817EH - Si APD, 0.8mm, TO-5 Low-Profile - designed for general-purpose applications and comes with a double-diffused “reach through” structure.
  • C30884EH - Si APD, 1mm, TO-5 - offers very high modulation capabilities with high responsivity and fast rise and fall times.
What are the applications of High-Performance Si APDs?
High-performance Si APDs are incredibly versatile and can be integrated seamlessly into various systems in the communications, Light Detection and Ranging (LiDAR), scientific research, medical imaging, security, defense and industrial instrumentation industries, to enable the following applications:
  • Laser range finder
  • Scanning video imager
  • Confocal microscope
  • Free space communication
  • Spectrophotometers
  • Fluorescence detection
  • Luminometer
  • DNA sequencer
  • Particle sizing
Do you offer custom Silicon APDs?
Excelitas proudly manufactures a wide range of off-the-shelf high-performance Si APDs to meet the needs of our OEM customers and enable them to manufacture solutions that in turn meet the requirements of their end-user customers. These products have been manufactured while complying with the highest standards of quality while maintaining affordability. If you are unable to find the solution you are looking for in our comprehensive portfolio, you are also welcome to connect with us so we can collaborate on bespoke solutions that truly address your specialized requirements. We collaborate with you through all stages of design and production to help you develop a solution that optimizes product quality, cost and time to market.
Excelitas Photon Detection Catalog
Excelitas C30902 Series of High-Performance Si APDs

Product List

Part Number
C30902SH

C30902SH - Si APD, 0.5mm, TO-18, Photon Counting

Excelitas’ C30902SH Avalanche Photodiodes are high speed, large area Silicon APDs that provide high responsivity at low noise. They are specially selected to be used either in Geiger Mode (V<sub>OP</sub> > V<sub>BD</sub>) for detection of single photons or Linear Mode (V<sub>OP</sub> < V<sub>BD</sub>) with gains up to 250.
Part Number
C30902SH-2

C30902SH-2 - Si APD, 0.5mm, TO-18, Photon Counting, 905nm filter

Excelitas’ C30902SH Avalanche Photodiodes are high speed, large area Silicon APDs that provide high responsivity at low noise. They are specially selected to be used either in Geiger Mode (V<sub>OP</sub> > V<sub>BD</sub>) for detection of single photons or Linear Mode (V<sub>OP</sub> < V<sub>BD</sub>) with gains up to 250.
Part Number
C30902SH-TC

C30902SH-TC - Si APD, 0.5mm, TO-66, Photon Counting, Single-Stage Cooler

Excelitas’ C30902SH Avalanche Photodiodes are high speed, large area Silicon APDs that provide high responsivity at low noise. They are specially selected to be used either in Geiger Mode (V<sub>OP</sub> > V<sub>BD</sub>) for detection of single photons or Linear Mode (V<sub>OP</sub> < V<sub>BD</sub>) with gains up to 250.
Part Number
C30902SH-DTC

C30902SH-DTC - Si APD, 0.5mm, TO-66, Photon Counting, Dual-Stage Cooler

Excelitas’ C30902SH Avalanche Photodiodes are high speed, large area Silicon APDs that provide high responsivity at low noise. They are specially selected to be used either in Geiger Mode (V<sub>OP</sub> > V<sub>BD</sub>) for detection of single photons or Linear Mode (V<sub>OP</sub> < V<sub>BD</sub>) with gains up to 250.
Part Number
C30902EH

C30902EH - Si APD, 0.5mm, TO-18

Excelitas’ C30902EH Avalanche Photodiodes are high speed, large area silicon reach-through APDs that provide high responsivity at low noise. They are especially designed for low light applications that require typical gains larger than 100 and are offered within several TO-18 package configurations as flat glass, ball lens, light pipe and 905 nm filter.
Part Number
C30902EH-2

C30902EH-2 - Si APD, 0.5mm, TO-18, 905nm filter

Excelitas’ C30902EH Avalanche Photodiodes are high speed, large area silicon reach-through APDs that provide high responsivity at low noise. They are especially designed for low light applications that require typical gains larger than 100 and are offered within several TO-18 package configurations as flat glass, ball lens, light pipe and 905 nm filter.
Part Number
C30902BH

C30902BH - Si APD, 0.5mm, TO-18 Ball Lens

Excelitas’ C30902EH Avalanche Photodiodes are high speed, large area silicon reach-through APDs that provide high responsivity at low noise. They are especially designed for low light applications that require typical gains larger than 100 and are offered within several TO-18 package configurations as flat glass, ball lens, light pipe and 905 nm filter.
Part Number
C30916EH

C30916EH - Si APD, 1.5mm, TO-5 Low-Profile

The C30916EH Large-Area Silicon Avalanche Photodiode provides a 1.5 mm active area diameter in TO-5 housing.
Part Number
C30817EH

C30817EH - Si APD, 0.8mm, TO-5 Low-Profile

The C30817EH Silicon Avalanche Photodiode for general-purpose applications is designed using a double-diffused “reach through” structure. This structure provides high responsivity between 400 to 1100 nm, as well as fast rise and fall times at all wavelengths. Since the fall time characteristics has no “tail”, the responsivity of the device is independent of modulation frequency up to about 200 MHz.
Part Number
C30884EH

C30884EH - Si APD, 1mm, TO-5

The C30884EH Silicon Avalanche Photodiode (Si APD) offers very high modulation capability with high responsivity and fast rise and fall times. Because the fall time characteristic has no “tail”, the responsivity of the device is independent of modulation frequency up to about 400 MHz. This Si APD is made using a double-diffused “reach-through” structure and is optimized for high responsivity at wavelengths of below 1000 nm.