PIR Sensor XYC-PIR203B-S0 3 Pin TO-5
The PIR203B is a TO-5 packaged pyroelectric infrared sensor element that converts changes in infrared radiation (caused by moving warm bodies) into an electrical output. Its dual-element (binary compensation) design and built-in RC filtering improve immunity to temperature drift and radio-frequency interference, providing a stable, high signal-to-noise output suitable for use with simple amplifier/trigger circuits or motion-detection modules.
Intended for integration behind a Fresnel lens, the PIR203B is used as the sensing element in automatic lighting, intrusion detectors, smart toys, and other consumer or security devices. The part is supplied as a sealed metal package with defined window/filter characteristics — designers add the appropriate amplifier, comparator and lens to produce a finished motion sensor module.
Features:
- Dual-element pyroelectric design for balanced detection.
- Good immunity to temperature drift and RFI (resistance-capacitance filtering).
- High signal-to-noise performance suitable for sensitive detection.
- Small TO-5 metal package for robust mounting and thermal stability.
- Compatible with Fresnel lenses to set detection range/angle.
- Stable offset characteristics for easier signal conditioning.
Specifications:
| Parameter | Value |
|---|---|
| Part / Model: | PIR203B (XYC-PIR203B-S0) |
| Package: | TO-5 metal can |
| Window size: | 4 × 3mm |
| IR receiving electrode: | 2 × 1mm (two sensitive elements) |
| Spectral response: | 5.5 – 14μm |
| Transmittance (window): | ≥ 75% |
| Peak output signal (Vp-p): | ≥ 3500mV (test condition) |
| Sensitivity: | ≥ 3000V/W |
| Noise (Vp-p): | < 80mV |
| Output balance: | < 10% |
| Source (offset) voltage: | 0.4 ~ 1.0V |
| Supply voltage: | 2 ~ 15V |
| Operating temperature: | −30°C ~ +70°C |
| Storage temperature: | −40°C ~ +80°C |
| Recommended test conditions: | Blackbody 420K, modulation ~1Hz, amplifier gain 72.5dB |
| Application package: | Requires external amplifier / comparator & Fresnel lens |
Pinout:
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | D | Power Supply (Vcc) |
| 2 | S | Signal Output (Source) |
| 3 | G | Ground (GND) |
Applications:
- Automatic lighting switches and presence detectors.
- Intrusion/burglar alarm sensors and motion detectors.
- Smart toys and interactive devices.
- Security camera motion inputs and video trigger systems.
- Appliance / home automation occupancy detection.
- Custom sensor modules when combined with amplifier & lens.
Packages:
- 1x PIR Sensor XYC-PIR203B-S0 3 Pin TO-5.