BCW70T116

Overview

The BCW70T116 is a PNP bipolar junction transistor manufactured by Rohm Semiconductor, designed for surface-mount applications in the SST3 (SOT-23) package. It features a collector-emitter voltage of 45 V and a continuous collector current of 100 mA. The device has a maximum power dissipation of 200 mW and a transition frequency of 250 MHz. Key electrical characteristics include a DC current gain (hFE) minimum of 80 at 10 mA and 5 V, with a collector-base voltage of 50 V and emitter-base voltage of 5 V.

Feature Summary

• PNP polarity configuration suitable for general-purpose amplification and switching tasks
• Integrated pre-bias structure simplifies circuit design by reducing external component count
• Surface-mount SST3 package enables compact PCB layout and automated assembly

Applications

• General-purpose signal amplification circuits
• Low-power switching applications
• Pre-biased driver stages for logic interfacing

Procurement Notes

Verify the manufacturer part number against official Rohm Semiconductor documentation to ensure authenticity. Confirm RoHS compliance status and packaging type (tape and reel) requirements prior to ordering. Check for any specific handling instructions related to moisture sensitivity level 1. Ensure that the procurement source provides valid traceability data and original manufacturer seals.

Selection Notes

Select this component when a PNP transistor with integrated pre-biasing is required for space-constrained designs. The 45 V rating and 100 mA current capacity suit low-voltage digital logic interfaces. Consider the 200 mW power dissipation limit for thermal management in dense layouts. Compare hFE specifications against load requirements to ensure adequate gain for the intended application.

Part Context

The BCW70T116 belongs to Rohm’s family of pre-biased transistors, which integrate base resistors to simplify biasing networks. This series is commonly used in consumer electronics and industrial control systems where board space is limited. The SST3 package variant ensures compatibility with standard SMT reflow processes, supporting high-volume manufacturing environments.

Replacement Considerations

The BC847C is listed as a similar-level replacement with the same pinout and package, though it is an NPN device requiring circuit topology adjustment. Verify functional equivalence carefully before substitution.