The industry’s smallest transistor package

09 November 2012

ROHM Semiconductor has developed the smallest transistor package on the market optimised for thin, compact portable devices.

The VML0806 measures just 0.8mm×0.6mm, with a height of only 0.36mm.

As portable devices such smartphones and digital cameras get smaller and more sophisticated, thinner, more compact components are required. However, until now, problems related to internal element miniaturisation, bonding stability, package process accuracy, and surface mount technology limit the smallest conventional transistors to the 1006 size (1.0mm×0.6mm, t=0.37mm).

ROHM was able to overcome these challenges by utilising a smaller element and high-precision package process technology, resulting in an unprecedentedly compact form factor. In addition, optimised external and terminal dimensions improve mountability while facilitating mass production.

ROHM will initially offer this new package for small-signal MOSFETs, reducing mounting area and thickness by 67% and 28%, respectively, compared with conventional 1212-sized (1.2mm×1.2mm, t=0.5mm) products while still maintaining characteristics and performance. Future implementations will include bipolar and digital transistors, which are expected to contribute to end-product miniaturisation and higher-density designs for circuit applications of all types.

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