BC846B/DG/B4R

Overview

The Nexperia BC846B/DG/B4R is a single NPN general-purpose bipolar junction transistor housed in an SOT-323 (SC-70) surface-mount plastic package. It features a collector-emitter voltage of 65 V, a collector current of 100 mA, and a power dissipation of 200 mW. The device offers a transition frequency of 100 MHz and a DC current gain range of 200 to 450. Operating temperatures span from -65 °C to +150 °C.

Feature Summary

• Compact SOT-323 surface-mount package for space-constrained designs
• High DC current gain suitable for amplification applications
• Wide operating temperature range for industrial environments

Applications

• General-purpose switching circuits
• Small-signal amplification stages
• Driver circuits for low-power loads

Procurement Notes

Verify the specific suffix DG/B4R against official Nexperia documentation to confirm tape-and-reel specifications and marking codes. Ensure compatibility with standard SC-70 footprints during PCB layout. Confirm RoHS compliance status through the manufacturer's latest release notes before finalizing procurement orders.

Selection Notes

Select this component when a small-form-factor NPN transistor is required for high-gain amplification or switching tasks. The SOT-323 package provides a compact alternative to larger SMD packages while maintaining robust electrical performance. Consider thermal management requirements given the 200 mW power dissipation limit in enclosed spaces.

Part Context

This part belongs to the BC846 series of general-purpose NPN transistors manufactured by Nexperia. The series includes variants with different gain ranges and packaging options, such as SOT-23 and SOT-363. The BC846B variant specifically denotes a medium-to-high gain selection within this family, widely used in consumer electronics and industrial control systems.

Replacement Considerations

Direct pin-compatible substitutes include the BC846BW,115 and BCM846BSX for dual-transistor configurations if isolation is needed. Verify that replacement parts match the 65V VCEO and 100mA IC ratings to ensure circuit integrity without redesigning the footprint.