BC858B TR PBFREE

Overview

The BC858B TR PBFREE is a general-purpose NPN silicon transistor manufactured by Central Semiconductor Corp. It features a collector-emitter breakdown voltage of 65 V and a maximum continuous collector current of 100 mA. The device operates with a transition frequency of 100 MHz and dissipates up to 250 mW of power. Packaged in the SOT-523 surface-mount format, it offers a DC current gain (hFE) of at least 200 when tested at 2 mA and 5 V. The component supports a junction temperature range from -65°C to 150°C.

Feature Summary

• Designed for general-purpose amplification applications
• Utilizes small signal SOT-523 surface mount packaging
• Provides high DC current gain characteristics

Applications

• General purpose amplifier circuits
• Small signal switching applications
• Low power electronic devices

Procurement Notes

Verify the specific manufacturer part number against official datasheets to ensure compatibility with design requirements. Confirm RoHS compliance status and package type accuracy before procurement. Check for any recent product change notices or end-of-life announcements directly from Central Semiconductor Corp documentation to avoid supply chain disruptions during production.

Selection Notes

Select this component for designs requiring a compact NPN transistor with moderate voltage ratings. The SOT-523 package suits space-constrained PCB layouts. Ensure the application current remains within the 100 mA limit and that thermal management accommodates the 250 mW dissipation rating. Verify hFE requirements align with the specified minimum gain values under operating conditions.

Part Context

This part belongs to the BC846/BC847/BC848/BC849 series family of general-purpose transistors. These components are widely used in consumer electronics and industrial control systems. The BC858B variant specifically provides NPN configuration with defined electrical parameters suitable for low-frequency amplification tasks.

Replacement Considerations

Consult official cross-reference lists from Central Semiconductor Corp for verified substitutes. Generic equivalents may differ in hFE ranges or package dimensions. Validate pinout compatibility and thermal performance before substituting.