BC327-40BK

Single Bipolar Transistors Overview

The Diotec Semiconductor BC327-40BK is a PNP general-purpose silicon epitaxial planar transistor housed in a TO-92 plastic case. It features a collector-emitter voltage (VCEO) of 45 V and a maximum DC collector current of 800 mA, with a peak collector current rating of 1 A. The device has a power dissipation capacity of 625 mW at 25°C ambient temperature. The junction temperature range spans from -55°C to +150°C. Electrical characteristics include a gain-bandwidth product of 100 MHz and a collector-base capacitance of 12 pF. The specific '40' suffix indicates a DC current gain group where hFE ranges from 250 to 630 at IC = 100 mA.

Single Bipolar Transistors Feature Summary

• PNP polarity configuration suitable for general-purpose switching and amplification applications
• Silicon epitaxial planar construction providing robust thermal stability and reliability
• High DC current gain grouping ensuring consistent performance across operating conditions
• Lead-free compliant packaging material classified as UL 94V-0

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Amplifier stages requiring complementary NPN pairing
• Driver circuits for low-power loads
• Signal processing components in commercial electronics

Single Bipolar Transistors Procurement Notes

Verify the specific ordering code matches the required current gain group, as the '40' designation corresponds to a distinct hFE range compared to other variants in the BC327 series. Confirm package type compatibility during integration, noting the standard bulk packaging format specified by the manufacturer. Ensure design parameters align with the absolute maximum ratings provided in the official datasheet to prevent device failure under stress conditions.

Single Bipolar Transistors Selection Notes

Select this component when a high-gain PNP transistor is required for standard commercial or industrial applications. The BC327-40BK offers a specific current gain band that may be necessary for precise biasing requirements. Consider the complementary BC337 series for matched NPN counterparts in push-pull configurations. Evaluate thermal management needs based on the 625 mW dissipation limit and the thermal resistance to ambient air specification.

Single Bipolar Transistors Part Context

This component belongs to the BC327-xBK family of PNP transistors manufactured by Diotec Semiconductor. The series includes variants differentiated by their DC current gain groups, such as -16, -25, and -40. These devices are designed as general-purpose replacements for older industry standards, offering modern manufacturing processes while maintaining pinout compatibility with legacy designs. The BK suffix typically denotes specific packaging or lead-form variations within the TO-92 family.

Single Bipolar Transistors Replacement Considerations

Direct substitutes include other manufacturers' BC327-40 equivalents. Complementary NPN transistors like the BC337 series are recommended for paired applications. Verify that any replacement maintains the same TO-92 footprint and electrical characteristics, particularly the 45 V VCEO rating and 800 mA IC limit.