PD510A 3.6x3.6mm Adjustable Gain Silicon Photodetector (320-1100nm)

Product Overview

PD510A is a high-performance low-noise adjustable gain silicon photodetector exclusively built for free-space optical detection scenarios, featuring a 3.6x3.6mm large photosensitive area that boosts light collection efficiency for weak and scattered light signals. Covering a 320-1100nm visible to near-infrared spectral range with a 0.6A/W high responsivity @940nm, this detector integrates a high-quality silicon photodiode, custom transimpedance amplifier, driver stage amplifier and high-frequency RF connector in a compact design—optimized for minimal size and maximum frequency response. Its core advantage lies in the 8 selectable gain/bandwidth gears, which allows flexible adjustment from high-speed 12MHz bandwidth (0dB) to ultra-high gain 2.9×10⁶ V/W (70dB), adapting to diverse application needs from high-speed optical pulse capture to ultra-weak light signal detection. With standard SMA female output, 50Ω impedance matching and DC coupling, the PD510A enables plug-and-play integration into various optical setups, and maintains consistent low-noise performance in industrial and laboratory environments (-20~65℃ operating temperature), making it a reliable photodetection solution for scientific research, optical instrument development and industrial sensing.

Key Features

• 3.6x3.6mm enlarged silicon photosensitive area for enhanced free-space light collection
• 320-1100nm broad spectral response (visible to near-infrared) with 0.6A/W responsivity @940nm
• 8 adjustable gain/bandwidth gears (0dB-70dB) for on-demand application tuning
• Integrated low-noise transimpedance + driver stage amplifier for optimized frequency response
• 10V maximum output amplitude (high-res load) for strong, clear signal output
• Standard SMA female output, 50Ω impedance matching for universal RF system integration
• Compact all-in-one design, DC coupling, suitable for free-space optical system embedding
• Wide operating temperature (-20~65℃) & storage temperature (-40~85℃) for industrial/lab use
• Low power consumption (100mA operating current) with ±12V standard operating voltage
• High stability with fixed 5mV output bias voltage across all gain gears

Applications

• Free-space optical communication system signal detection & reception
• Precision optical instrument and metering equipment matching
• Academic & industrial laboratory optical research and experimental setups
• Ultra-weak visible/near-infrared light signal measurement and analysis
• High-speed optical pulse detection and dynamic light signal capture
• Industrial non-contact optical sensing and light intensity detection
• Photometry and spectral analysis in physics and optical engineering research
• Portable optical detection device development and core component matching

Specifications

Core Common Parameters

8 Adjustable Gain & Bandwidth Gears Parameters

Response curve

Mechanical Dimensions

Schematic Diagram of Light-Sensitive Distance Measurement