Smallest and Thinnest in the World! Developing Surface Mount

Pyroelectric Infrared Sensor

Feb 26, 2010

Murata Manufacturing Co., Ltd.

President/ Statutory Representative Director: Tsuneo Murata

Overview

Murata Manufacturing Co., Ltd. has developed the world's smallest and thinnest surface mount

pyroelectric infrared sensor, "IRS-B series."

Our new model is even smaller than the previous reflow surface mount pyroelectric infrared sensor

available exclusively from Murata. This model will contribute to promoting mass production and price

reduction of reflow surface mount type sensors. It will also accelerate introduction of the human presence

sensor for consumer equipment in addition to allowing equipment size reduction.

Furthermore, we have developed a condenser "flat lens" used in combination with the pyroelectric infrared

sensor, contributing to thinner equipment manufacturing.

Background

Requirements for human presence sensing are increasing in various applications such as energy

conservation, theft prevention, appliances and care-giving. Previously, pyroelectric infrared sensors used in

human presence sensors tended to be large, and unsuitable for automatic surface mounting due to lead

mount construction, making them less cost effective and difficult to mass-produce.

To this end, Murata previously offered the only lineup of reflow surface mount pyroelectric infrared

sensors in the industry. We were able to further reduce the size of this newly developed "IRS-B series"

model, creating a smaller and thinner version, by improving Murata's own package technology and

pyroelectric ceramic materials. This model makes it possible to mount the human presence sensor on

equipment allowing the equipment to be smaller, thinner and lighter, such as appliances, low profile digital

equipment, PCs and video game consoles.

IRS-B series is approximately 50% smaller in volume and 10% thinner than our previous surface mount

model. Compared with common lead-type models, it is significantly smaller with a lower profile

approximately 20% less in volume and 50% less in thickness than the former.

Curvature of the "flat lens," developed together with "IRS-B series," was made extremely flat making it

possible to streamline the equipment design.

Features

World's smallest and thinnest size (4.7x4.7x2.4mm)

Only lead-free soldering reflow surface mounting model in the industry

High sensitivity

Achieves excellent electromagnetic noise suppression performance through Murata's own packaging

technology

Contributes to flatter equipment design with simultaneously developed flat lens

Does not use substances controlled by the RoHS directive

Applications

Usable for the following applications as human presence sensor

TVs

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Smallest and Thinnest in the World! Developing Surface Mount Pyroelectric Infrared ...

05/11/2010

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