UV-XXXDQ(C)/EQ(C) UV-enhanced Si Photodiodes

254 nm Band Optimized; Active Area 5.7 to 100 mm2; AA Dimensions 2.4 x 2.4 to 10 x 10 mm; Rise Time 0.2 to 7 µs; Responsivity 0.12 to 0.5 A/W; Capacitance 65 to 2,500 pF; Package TO-5, TO-8, BNC, Ceramic

OSI Optoelectronics offers two distinct families of UV-enhanced silicon photodiodes: Inversion layer (channel) series and planar diffused series. Both families of devices are especially designed for low-noise detection in the UV region of the electromagnetic spectrum.

OSI Optoelectronics’ UV-XXXDQ(C)/EQ(C) series of planar diffused structure UV-enhanced photodiodes show significant advantages over inversion layer devices, such as lower capacitance and faster response time. These devices exhibit linearity of photocurrent up to higher light input power compared to inversion layer devices. They offer better stability with prolonged exposure to UV light.

There are two types of planar diffused UV enhanced photodiodes available: UV-XXXDQ(C) and UV-XXXEQ(C). Both series have almost similar electro-optical characteristics, except in the UV-XXXEQ(C) series, where the near IR responses of the devices are suppressed. This is especially desirable if blocking the near IR region of the spectrum is necessary.

UV-XXXDQ(C) devices peak at 970 nm and UV-XXXEQ(C) devices peak at 720 nm. Both series may be biased for lower capacitance, faster response and wider dynamic range. Or they may be operated in the photovoltaic (unbiased) mode for applications requiring low drift with temperature variations.

The UV-XXXEQ(C) devices have a higher shunt resistance than their counterparts of UV-XXXDQ(C) devices but have a higher capacitance. These detectors are ideal for coupling to an OP-AMP in the current mode configuration.

Key Features:

• Planar Diffused UV-enhanced Silicon Photodiodes
• Ultra-high Shunt Resistance
• High-speed Response
• High Stability
• Excellent UV Responsivity

Applications: Pollution Monitoring; Medical Instrumentation; UV Exposure Meters; Spectroscopy; Water Purification; Fluorescence