The Industry's Smallest* Transistor Package
Ultra-compact VML0806 package contributes to increased miniaturization and improved performance in smartphones


*ROHM September 6, 2012 survey

ROHM recently announced the development of the smallest transistor package on the market optimized 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 miniaturization, 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 utilizing a smaller element and high-precision package process technology, resulting in an unprecedentedly compact form factor. In addition, optimized 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 miniaturization and higher-density designs for circuit applications of all types.

Package Comparison External Dimensions

Key Features

  • Industry-small size minimizes mounting area
    Compared to the smallest conventional small-signal transistor available (1212 size: 1.2mm×1.2mm, t=0.50mm), mounting area is reduced 67% and thickness 28%.
  • Bottom-terminal design supports high-density mounting
  • Reduced MOSFET ON resistance
    Low ON resistance (2.6Ω)is enabled in an ultra-compact form factor.



Part No Polarity Vdss(V) Id(mA) Pd(mW)
RV1C002UN Nch 20 150 100
RV1C001ZP Pch 20 100 100

    Bipolar Transistors

Part No Polarity Vceo(V) Ic(mA) Pd(mW)
2SAR523V1 PNP 50 100 100
2SCR523V1 NPN 50 100 100

Blue star: Under Development