Pyroelectric Infrared Sensor Claimed As World's Smallest

Hoofddorp, Netherlands: The latest version of Murata's pyroelectric infrared (PIR) sensor is claimed by the company to be the world's smallest at 5.0 x 4.7 x 2.4 mm, enabling the sensor to be used in compact, low-profile electronic devices and equipment.

The IRS-B210ST01-R1 is a surface-mount PIR sensor and features high sensitivity and signal-to-noise ratio, good stability against temperature changes and white light, and enhanced RFI immunity.

The sensor is suitable for person detection for security and proximity-sensing applications, since it detects infrared at the wavelength emitted by the human body. Its small package size makes it suitable for consumer devices. The device features dual 0.85- x 1.2-mm electrodes with a field of vision of ±70º (horizontal) and ±50º (vertical). Its operating temperature range is -40 to +70ºC and the device is driven by a supply voltage in the range of 2 to 15V.

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