An Avalanche Photodiode (APD) is a photodetector that provides a built-in first stage of gain via avalanche multiplication. Provision of this internal signal gain is what differentiates an APD from a PIN photodiode.
An APD provides higher sensitivity and so is ideal for extreme low-level light detection and photon counting. Available as Silicon or InGaAs photodiodes, these devices detect in the 400nm – 1100nm range. Multiple configurations are available to provide a wide range of sensitivity and speed options.
The use of avalanche photodiodes instead of PIN photodetectors will result in improved sensitivity – useful in applications where the noise of the amplifier is high i.e. much higher than the noise in the photodetector.
New C30733 Series Avalanche Photodiodes – High Speed, High Gain
New from Excelitas is the C30733 Series of high speed, high gain, low noise lnGaAs APDs. The C30733 provides high quantum efficiency (QE), high responsivity, low noise and fast recovery in the spectral range between 1000 nm and 1700 nm.
This unique combination of high gain and fast recovery time, coupled with low noise performance, makes it an ideal solution for high-end test equipment where extremely fast response and recovery time is required. Its ability to operate at very high gain with low noise performance fundamentally improves the signal to noise ratio and enables the detection of very low signals and small changes in fiber integrity for testing over long fiber telecom networks with high precision.
InGAas APDs
| Features |  |  |  |  |  |
|---|---|---|---|---|---|
| Part Number | C30644EH | C30645EH | C30645EH-1 | C30645ECERH | C30645L |
| Description | InGaAs APD TO-18 | InGaAs Avalanche Photodiodes Series, TO-18 | InGaAs Avalanche Photodiodes Series, TO-18, Small aperture, Silicon | InGaAs Avalanche Photodiodes Series, Ceramic carrier | InGaAs Avalanche Photodiodes Series, SMD LLC |
| Supplier | Excelitas | Excelitas | Excelitas | Excelitas | Excelitas |
| Package | TO-18 | TO-18 | TO-18, Small aperture, Silicon | Ceramic carrier | SMD LLC |
| Active Diameter µm | 50 | 80 | 80 | 80 | 80 |
| Capacitance Pf | 0.6 | 1.25 | 1.25 | 1.25 | 1.25 |
| Typical BW MHz | 2000 | > 1000 | > 1000 | > 1000 | > 1000 |
| Dark Current nA | 25 | 3 | 3 | 3 | 3 |
| Breakdown Voltage | 45-70 | 45-70 | 45-70 | 45-70 | 45-70 |
| Datasheet | Download | Download | Download | Download | Download |
| Enquire | Enquire | Enquire | Enquire | Enquire | Enquire |
| Features |  |  |  |  |  |
| Part Number | C30662EH | C30662EH-1 | C30662ECERH | C30662EH-3 | C30662L |
| Description | InGaAs Avalanche Photodiodes Series, TO-18, Large aperture, Glass | InGaAs Avalanche Photodiodes Series, TO-18, Large aperture, Glass | InGaAs Avalanche Photodiodes Series, Ceramic carrier | InGaAs Avalanche Photodiodes Series, TO-18, Small aperture, Glass | InGaAs Avalanche Photodiodes Series, SMD LLC |
| Supplier | Excelitas | Excelitas | Excelitas | Excelitas | Excelitas |
| Package | TO-18, Large aperture, Glass | TO-18, Large aperture, Glass | Ceramic carrier | TO-18, Small aperture, Glass | SMD LLC |
| Active Diameter µm | 200 | 200 | 200 | 200 | 200 |
| Capacitance Pf | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 |
| Typical BW MHz | 850 | 850 | 850 | 850 | 850 |
| Dark Current nA | 45 | 45 | 45 | 45 | 45 |
| Breakdown Voltage | 45-70 | 45-70 | 45-70 | 45-70 | 45-70 |
| Datasheet | Download | Download | Download | Download | Download |
| Enquire | Enquire | Enquire | Enquire | Enquire | Enquire |
| Features |  |  |  |  |  |
| Part Number | C30617BH | C30617L-100 | C30618GH | C30618L-350 | C30619GH |
| Description | InGaAs Avalanche Photodiodes Series, TO-18, ball lens | InGaAs Avalanche Photodiodes Series, SMT | InGaAs Avalanche Photodiodes Series, T0-18 | InGaAs Avalanche Photodiodes Series, SMT | InGaAs Avalanche Photodiodes Series, TO-18 (Available with single cooler/dual cooler) |
| Supplier | Excelitas | Excelitas | Excelitas | Excelitas | Excelitas |
| Package | TO-18, ball lens | SMT | T0-18 | SMT | TO-18 (Available with single cooler / dual cooler) |
| Active Diameter µm | 100 | 100 | 350 | 350 | TO-18 (Available with single cooler/dual cooler) |
| Capacitance Pf | < 1.0 | 0.8 | < 6.0 | 4.0 | 7 |
| Typical BW MHz | 3.5 | 3.5 | 0.75 | 0.75 | 350 |
| Dark Current nA | <1.0 | <1.0 | <1.0 | <1.0 | 0.3 |
| Breakdown Voltage | 100 | 100 | 80 | 80 | 20 |
| Datasheet | Download | Download | Download | Download | Download |
| Enquire | Enquire | Enquire | Enquire | Enquire | Enquire |
| Features |  |  |  |  |  |
| Part Number | C30619GH-LC | C30641GH / EH | C30641GH-LC | C30642GH-LC | C30642GH |
| Description | InGaAs Avalanche Photodiodes Series, TO-18 | InGaAs Avalanche Photodiodes Series, TO-18 (Available with single cooler/dual cooler) | InGaAs Avalanche Photodiodes Series, TO-18 | InGaAs Avalanche Photodiodes Series, TO-5 | InGaAs Avalanche Photodiodes Series, TO-5 |
| Supplier | Excelitas | Excelitas | Excelitas | Excelitas | Excelitas |
| Package | TO-18 | TO-18 (Available with single cooler / dual cooler) | TO-18 | TO-5 | TO-5 |
| Active Diameter µm | TO-18 | TO-18 (Available with single cooler/dual cooler) | TO-18 | TO-5 | TO-5 |
| Capacitance Pf | 5 | 22 | 18 | 77 | 90 |
| Typical BW MHz | 700 | 75 | 150 | 40 | 20 |
| Dark Current nA | 0.3 | 1 | 1 | 2 | 2 |
| Breakdown Voltage | 20 | 20 | 20 | 15 | 15 |
| Datasheet | Download | Download | Download | Download | Download |
| Enquire | Enquire | Enquire | Enquire | Enquire | Enquire |
| Features |  |  |  | ||
| Part Number | C30665GH | C30665GH-LC | C30723GH | ||
| Description | InGaAs Avalanche Photodiodes Series, TO-5 (Available with single cooler/dual cooler) | InGaAs Avalanche Photodiodes Series, TO-5 | InGaAs Avalanche Photodiodes Series, TO-8 | ||
| Supplier | Excelitas | Excelitas | Excelitas | ||
| Package | TO-5 (Available with single cooler / dual cooler) | TO-5 | TO-8 | ||
| Active Diameter µm | TO-5 (Available with single cooler/dual cooler) | TO-5 | TO-8 | ||
| Capacitance Pf | 200 | 165 | 950 | ||
| Typical BW MHz | 10 | 20 | 3 | ||
| Dark Current nA | 5 | 5 | 20 | ||
| Breakdown Voltage | 10 | 10 | 10 | ||
| Datasheet | Download | Download | Download | ||
| Enquire | Enquire | Enquire | Enquire |
Silicon APDs
| Features |  |  |  |  |  |
|---|---|---|---|---|---|
| Part Number | C30817EH | C30884EH | C30916EH | C30902EH | C30902SH |
| Description | Si APD, 0.8mm, TO-5 Low-Profile | Si APD, 1mm, TO-5 | Si APD, 1.5mm, TO-5 Low-Profile | Si APD, 0.5mm, TO-18 | Si APD, 0.5mm, TO-18, Photon Counting |
| Supplier | Excelitas | Excelitas | Excelitas | Excelitas | Excelitas |
| Package | TO-5 | TO-5 | TO-5 | TO-18, flat window (available with built-in 905 nm filter) | TO-18, flat window |
| Active Diameter (mm) | 0.8 | 0.8 | 1.5 | 0.5 | 0.5 |
| Typical nCapacitance pF | 2 | 4 | 3 | 1.5 | 1.5 |
| Typical Rise/Fall Time ns | 2 | 1 | 3 | 0.4 | 0.4 |
| Typical Dark nCurrent nA | 50 | < 75 | 100 | 7 | 7 |
| Breakdown Voltage nmin V | 300 | 190 | 315 | 185 | 185 |
| Breakdown Voltage nmax V | 475 | 290 | 490 | 260 | 260 |
| Temp. nCoefficient V/°C | 2.2 | 1.1 | 2.2 | 0.7 | 0.7 |
| Typical nGain | 120 | 100 | 80 | 250 | 80 |
| Responsivity n900 nm A/W | 18 | 63 | 50 | 66 | 110 |
| Responsivity n1060 nm A/W | – | 8 | 12 | 0.23 | 0.11 |
| NEPn@900 nm fW/√Hz | 20 | 13 | 20 | ||
| Responsivity n800 nm A/W | 135 | 128 | |||
| Datasheet | Download | Download | Download | Download | Download |
| Enquire | Enquire | Enquire | Enquire | Enquire | Enquire |
| Features |  |  |  |  | |
| Part Number | C30902SH-DTC | C30954EH | C30955EH | C30956EH | C30954EH-TC |
| Description | Si APD, 0.5mm, TO-66, Photon Counting, Dual-Stage Cooler | Si APD, 0.8mm, TO-5 Package | Si APD, 1.5mm, TO-5 Package | Si APD, 3mm, TO-8 Package | Si APD, 0.8mm, TO-5 Package |
| Supplier | Excelitas | Excelitas | Excelitas | Excelitas | Excelitas |
| Package | TO-8 flange | TO-8 flange | |||
| Active Diameter (mm) | 0.5 | 0.8 | 1.5 | 3.0 | 0.8 |
| Typical nCapacitance pF | 1.5 | 2 | 3 | 10 | 2 |
| Typical Rise/Fall Time ns | 0.4 | 2 | |||
| Typical Dark nCurrent nA | 1 | 50 | 100 | 100 | 8 |
| Breakdown Voltage nmin V | 185 | 300 | |||
| Breakdown Voltage nmax V | 260 | 475 | |||
| Temp. nCoefficient V/°C | 0.7 | 2.4 | |||
| Typical nGain | 250 | 120 | |||
| Responsivity n800 nm A/W | 128 | ||||
| Responsivity n900 nm A/W | 110 | 75 | |||
| Responsivity n1060 nm A/W | 0.02 | 36 | 34 | 25 | 36 |
| NEPn@900 nm fW/√Hz | 0.2 | ||||
| Datasheet | Download | Download | Download | Download | Download |
| Enquire | Enquire | Enquire | Enquire | Enquire | Enquire |
| Features |  |  |  |  |  |
| Part Number | C30955EH-TC | C30927EH-01 | C30927EH-02 | C30927EH-03 | C30703FH |
| Description | Si APD, 1.5mm, TO-5 Package | Si APD Quadrant – 1.5 mm – 1060 nm | Si APD Quadrant – 1.5mm – 900 nm | Si APD Quadrant – 1.5mm – 800 nm | Si APD, 10x10mm, Flatpack |
| Supplier | Excelitas | Excelitas | Excelitas | Excelitas | Excelitas |
| Package | TO-8 flange | ||||
| Active Diameter (mm) | 1.5 | ||||
| Typical nCapacitance pF | 3 | ||||
| Typical Rise/Fall Time ns | 2 | 3 | 3 | 3 | 5 |
| Typical Dark nCurrent nA | 15 | 25 | 25 | 25 | 250 |
| Breakdown Voltage nmin V | 315 | 275 | 275 | 275 | 275 |
| Breakdown Voltage nmax V | 490 | 425 | 425 | 425 | 425 |
| Temp. nCoefficient V/°C | 2.4 | ||||
| Typical nGain | 100 | ||||
| Responsivity n900 nm A/W | 70 | 62(@ 900 nm) | |||
| Responsivity n1060 nm A/W | 34 | 15(@ 1060 nm) | |||
| NEPn@900 nm fW/√Hz | 0.2 | 66 @ 1060 nm | 16 @ 900 nm | 18 @ 800 nm | 40 (@530 nm) |
| Responsivity n800 nm A/W | 55(@ 800 nm) | 16 (@530 nm) | |||
| Datasheet | Download | Download | Download | Download | Download |
| Enquire | Enquire | Enquire | Enquire | Enquire | Enquire |
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