BC337-25BK

Single Bipolar Transistors Overview

The Diotec Semiconductor BC337-25BK is an NPN general-purpose silicon epitaxial planar transistor housed in a TO-92 plastic case. It features a maximum collector-emitter voltage (VCEO) of 45 V and a continuous collector current (IC) of 800 mA, with a peak collector current (ICM) of 1 A. The device has a power dissipation rating of 625 mW at 25°C ambient temperature. The -25 suffix indicates a DC current gain (hFE) group ranging from 160 to 400 when tested at VCE = 1 V and IC = 100 mA. It operates within a junction temperature range of -55°C to +150°C.

Single Bipolar Transistors Feature Summary

• NPN silicon epitaxial planar construction for general-purpose switching and amplification
• Low saturation voltage capability suitable for efficient signal processing
• High DC current gain grouping for consistent performance in amplifier stages
• Robust thermal characteristics with high junction temperature tolerance

Single Bipolar Transistors Applications

• General-purpose amplification circuits
• Switching applications in consumer electronics
• Driver stages for low-power output loads
• Complementary pairing with BC327 or BC328 PNP transistors

Single Bipolar Transistors Procurement Notes

Verify the specific hFE binning requirements against the datasheet's Group -25 specifications before finalizing component selection. Confirm that the bulk packaging format aligns with your assembly line handling capabilities, as this variant is supplied in special bulk packaging rather than standard tape and reel configurations.

Single Bipolar Transistors Selection Notes

Select this component when a moderate voltage rating of 45 V and a current capacity of 800 mA are required in a through-hole package. Ensure the application benefits from the specified mid-range current gain group (-25). Consider thermal management strategies if operating near the maximum power dissipation limit, as the TO-92 package relies on lead conduction for heat removal.

Single Bipolar Transistors Part Context

This part belongs to the BC337-xBK series, which represents general-purpose NPN transistors designed for commercial and industrial use. The 'BK' suffix denotes special bulk packaging, distinguishing it from standard ammo pack or tape-and-reel variants. It serves as a foundational discrete semiconductor component widely used in analog and digital circuit designs requiring reliable small-signal handling.

Single Bipolar Transistors Replacement Considerations

BC337-25G

Single Bipolar Transistors FAQ

What does the '-25' suffix indicate for the BC337-25BK?

The '-25' suffix designates the DC current gain (hFE) grouping. For the BC337-25BK, this corresponds to a minimum hFE of 160 and a maximum hFE of 400 under standard test conditions.

Is the BC337-25BK suitable for automotive applications?

Standard BC337-xBK parts are intended for commercial/industrial grade applications. Automotive-grade versions require specific AEC-Q101 qualification, which is not indicated for this standard bulk packaging variant.

What is the recommended complementary PNP transistor?

Diotec recommends using the BC327 or BC328 PNP transistors as complementary pairs to the BC337 series for push-pull or differential amplifier configurations.