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Thorlabs APD440A Thorlabs APD440A — Si Variable-Gain Avalanche Detector, Temperature Compensated, 400 - 1000 nm, DC - 100 kHz, Universal 8-32 / M4 Taps
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Thorlabs

APD440A

Thorlabs APD440A — Si Variable-Gain Avalanche Detector, Temperature Compensated, 400 - 1000 nm, DC - 100 kHz, Universal 8-32 / M4 Taps

The Thorlabs APD440A is a silicon variable-gain avalanche detector featuring temperature compensation, operating across a 400 to 1000 nm wavelength range with a DC to 100 kHz bandwidth. This unit incorporates universal 8-32 and M4 mounting taps and has an individual package weight of 3.79 lbs, with lifecycle status subject to current manufacturer documentation following its July 23, 2019 release date. Submit the exact part number, quantity, and application requirements to request a quote.

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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Thorlabs references — within one business day.

Manufacturer
Thorlabs
Part number
APD440A
Product series
Si Variable-Gain Avalanche Detector, Temperature Compensated, 400 - 1000 nm, DC - 100 kHz, Universal 8-32 / M4 Taps
Data verification
Manufacturer evidence reviewed

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Exact part-number verificationTechnical properties are matched to APD440A.
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Manufacturer documentationA document is added when the reviewed source provides one.

Verified configuration

Technical Specifications

Product Name
Si Variable-Gain Avalanche Detector, Temperature Compensated, 400 - 1000 nm, DC - 100 kHz, Universal 8-32 / M4 Taps
Lifecycle Status
Refer to current manufacturer documentation
Release Date
July 23, 2019
Package Weight
3.79 lbs Each

Engineering context

Identification and RFQ Guidance

Confirm the exact configuration

Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

What to include in your RFQ

Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.

Technical verification

Our sourcing response is prepared against Thorlabs APD440A. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.