Photodetector Module

Product Specifications

Technical details and manufacturing context for Photodetector Module

Definition

A photodetector module is a self-contained electronic assembly designed as part of a sensor array, such as those used in laser displacement systems. Its primary function is to detect and measure light intensity, converting photons into a proportional electrical current or voltage signal for processing by the array's control unit. The module integrates a photodetector element (e.g., a photodiode or phototransistor) with signal conditioning circuitry, including amplification and filtering, within a protective housing. It is typically mounted on a ceramic or PCB substrate and may include an optical connector for fiber input. The module is specified for spectral response from 400 to 1700 nm, with responsivity at peak wavelength between 0.9 and 1.1 A/W. Rise time ranges from 0.5 to 5 ns, and bandwidth from 100 to 1000 MHz. Dark current is 0.1 to 10 nA at 5 V reverse bias. Supply voltage is 5 to 24 V DC, and the output is an analog voltage of 0 to 5 V. Operating temperature is -40 to 85 °C, with storage from -40 to 100 °C. Humidity range is 5 to 95% RH non-condensing. Ingress protection is rated IP54 to IP67 per IEC 60529. Connector types include SMA to FC. Dimensions range from 20 to 50 mm, and weight from 50 to 200 g without cable. These values are typical reference ranges; actual specifications must be confirmed with the manufacturer for the specific model. The module is used in applications requiring precise light detection, such as laser displacement sensing, and is selected based on spectral range, speed, and environmental requirements. Verification of performance and compliance with standards should be done through the manufacturer's datasheet and testing.

Working Principle

The module operates on the principle of the photoelectric effect. When photons strike the active area of the photodetector (e.g., a photodiode or phototransistor within the module), they generate electron-hole pairs, creating a measurable photocurrent. This analog signal is then conditioned (e.g., amplified, filtered) by integrated circuitry within the module before being output. The output is an analog voltage proportional to the incident light intensity, which can be processed by the control unit of the sensor array.

Common Materials

Semiconductor (e.g., Silicon, InGaAs), Ceramic/PCB substrate, Protective housing (plastic/metal)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Spectral Range	400–1700 nm	Si for visible, InGaAs for NIR
Responsivity	0.9–1.1 A/W	At peak wavelength
Rise Time	0.5–5 ns	10%–90%
Bandwidth	100–1000 MHz	3 dB
Dark Current	0.1–10 nA	At 5 V reverse bias
Supply Voltage	5–24 V DC	Depending on amplifier
Output Signal	0–5 V	Analog
Operating Temperature	-40–85 °C	Storage -40–100
Humidity	5–95 % RH	Non-condensing
Ingress Protection	IP54–IP67	Depends on housingIEC 60529
Connector Type	SMA–FC	Optical input
Dimensions	20–50 mm	Diameter or length
Weight	50–200 g	Without cable

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Photodiode Chip Part
The core light-sensitive semiconductor element that generates photocurrent.

Material: Silicon or compound semiconductor (e.g., InGaAs)
Transimpedance Amplifier (TIA)
Converts the small photocurrent from the photodiode into a proportional voltage signal.

Material: Integrated circuit (silicon)
Optical Window/Filter Part
Protects the sensitive chip and can filter specific wavelengths of light.

Material: Glass or optical polymer

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Sensor Array (e.g., Laser Displacement)

View system integration details

Manufacturers of Photodetector Module

Manufacturer profiles associated with Photodetector Module.

Sourcing Photodetector Module from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is the spectral range of the photodetector module?

The spectral range is 400 to 1700 nm, covering visible to near-infrared wavelengths. Silicon is used for visible light, and InGaAs for NIR. Confirm the exact range for your model.

What is the output signal type?

The output is an analog voltage signal ranging from 0 to 5 V. This signal is proportional to the incident light intensity and can be read by the control unit.

What are the environmental limits?

Operating temperature is -40 to 85 °C, storage -40 to 100 °C, and humidity 5 to 95% RH non-condensing. Ingress protection is IP54 to IP67 per IEC 60529. Verify for your application.

How do I verify the module's specifications?

Always check the manufacturer's datasheet for the specific model. The values provided are typical reference ranges and must be confirmed for your intended use.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

Request manufacturing insight for Photodetector Module

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	0 to 1 atm (standard atmospheric)
other spec:	Wavelength range: 400-1100 nm, Response time: <10 ns
temperature:	-40°C to +85°C

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards