R12900U -World’s smallest photomultiplier tube

Hamamatsu Photonics now offers a new micro PMT “R12900U” housing the world’s smallest* photomultiplier tube in a miniature plastic package designed to easily mount on electronic circuit boards. Installing this new micro PMT to serve as a photodetector means environmental analyzers, portable medical diagnostic devices and so on can now be drastically downsized for convenient use anywhere needed including patient bedsides.


1. The size of this new micro PMT was reduced by eliminating the peripheral circuits normally used in micro PMT modules. It has dimensions of only 14 mm×14 mm×3.5 mm (W×H×D) and volume was reduced to 1/9th that of micro PMT modules while keeping the cost down. This new micro PMT will help increase design freedom to allow flexible layout of peripheral circuits and components to match the size and shape of customer equipment. The peripheral circuits are separately required to operate this new micro PMT.

2. The new micro PMT is encapsulated into a plastic package designed to easily mount on electronic circuit boards. The size is small enough to fit on a fingertip, making it easy to handle.

Contact Stantron for details or download a datasheet.

Called MicroPMTTM  Hamamatsu  produce the smallest and lightest photomultiplier tubes. These work on the same vacuum tube technology and principle as conventional photomulitplier tubes and so can deliver the same performance but in a compact lightweight package. A full range is available including current and voltage output types as well as photon counting.


* Based on research conducted by Hamamatsu Photonics K.K.

All rights reserved by Hamamatsu Photonics K.K.

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