Ionizing radiation photodiode VTH2110

siliconinfraredwavelength-sensitive

Product Overview
The VTH2110 is a 25 mm² silicon photodiode supplied in chip form for optimized alpha-particle detection, including radon gas monitoring. The device features a radiation-resistant chip design and a large 5 × 5 mm active area, delivering enhanced response to relevant radiation. The photodiode exhibits low capacitance and a spectral response from 400 nm to 1100 nm.

Series Information
This chip-form photodiode series is engineered for high responsivity to alpha particles by eliminating window absorption and maximizing active collection area. The large area improves collection of low-level radiation. A related model, the VTH2120, provides a 10 × 10 mm active area.

Packaging

• Offered in waffle pack or Mylar (preferred)

Features

• Optimized for alpha particle detection
• Supplied in chip form
• Low capacitance
• Low dark current
• Radiation resistant
• RoHS compliant

Applications

• Radon detection
• Alpha particle detection
• Ambient light sensing

Specifications / Technical data

• Active area: 25 mm²
• Dark current: Maximum 2 nA at 20 V reverse bias
• Junction capacitance: Maximum 30 pF at 20 V reverse bias
• Spectral range: 400 nm to 1100 nm
• Peak spectral response: 940 nm
• Sensitivity at peak wavelength: Typical 0.70 A/W
• Breakdown voltage: > 100 V