2SC3906KT146R

Single Bipolar Transistors Overview

The ROHM 2SC3906KT146R is a surface-mount NPN silicon small-signal bipolar junction transistor housed in the SOT-346 (SC-59) package. It features a maximum collector-emitter voltage of 120 V and a collector-base voltage of 120 V, supporting a continuous DC collector current of 50 mA. The device has a maximum power dissipation of 200 mW and a minimum DC current gain (hFE) of 180. Its transition frequency is rated at 140 MHz, with an operating temperature range up to 150°C.

Single Bipolar Transistors Feature Summary

• High breakdown voltage capability for high-voltage amplifier applications
• Compact SOT-346 surface-mount packaging for space-constrained designs
• Lead-free and RoHS compliant construction

Single Bipolar Transistors Applications

• High voltage amplifier circuits
• General-purpose switching applications
• Consumer electronic signal processing

Single Bipolar Transistors Procurement Notes

Verify availability status directly with authorized distributors or ROHM sales representatives, as supply conditions may vary. Confirm that the ordering suffix matches the required tape-and-reel quantity and hFE binning specifications. Ensure compliance with RoHS directives and lead-free requirements for your specific manufacturing process. Request official datasheets and quality certificates prior to finalizing procurement orders.

Single Bipolar Transistors Selection Notes

Select this component when a high-voltage NPN transistor is required in a compact SOT-346 footprint. The 120 V rating distinguishes it from standard low-voltage alternatives like the 2SC4102. Consider the complementary PNP type 2SA1579 if a matched pair is needed. Verify that the 50 mA current limit and 200 mW power dissipation meet the thermal and electrical demands of the target circuit design.

Single Bipolar Transistors Part Context

This part belongs to the 2SC3906K series of high-voltage small-signal transistors. It is designed as a complement to the 2SA1579 PNP transistor. The device utilizes silicon planar technology and is intended for use in general-purpose amplification and switching roles within consumer electronics and industrial control systems where high voltage isolation is necessary.

Single Bipolar Transistors Replacement Considerations

The 2SC4102T106 is a similar NPN transistor but operates in the smaller UMT3 (SOT-323) package with identical electrical ratings. Designers must account for the physical size difference between SOT-346 and SOT-323 during PCB layout modifications.