BC868-25-QX

Overview

The BC868-25-QX is an NPN medium power transistor from the Nexperia BC868-Q series, housed in a SOT89 (SC-62) surface-mounted plastic package. It features a collector-emitter voltage of 20 V and a continuous collector current capability of 2 A, with a peak pulse current of 3 A. The device offers two current gain selections; the BC868-25 variant specifies a DC current gain range of 160 to 375 at VCE = 1 V and IC = 500 mA. Qualified according to AEC-Q101, it supports high power dissipation up to 1.35 W on a 6 cm² collector pad and operates within a junction temperature range of -55 °C to 150 °C.

Feature Summary

• Qualified according to AEC-Q101 for automotive applications
• High collector current capability for both continuous and pulsed operation
• Two distinct current gain selections available within the series
• High power dissipation capability suitable for thermal management

Applications

• Linear voltage regulators
• MOSFET drivers
• Low-side switches
• Power management circuits
• Amplifiers

Procurement Notes

Verify the specific ordering suffix matches the required current gain bin, as the BC868-25-Q designation indicates a specific hFE range compared to the standard BC868-Q. Confirm the package type is SOT89 and ensure the application environment meets the AEC-Q101 qualification requirements. Check the most recent datasheet revision for any updates to limiting values or thermal characteristics before finalizing design specifications.

Selection Notes

Select the BC868-25-QX when a higher minimum DC current gain is required compared to the standard BC868-Q version. Ensure the thermal design accounts for the specific power dissipation limits based on the PCB copper area, as heat sinking significantly impacts performance. Verify that the 20 V collector-emitter voltage rating exceeds the maximum circuit operating voltage under all transient conditions.

Part Context

This component belongs to the Nexperia BC868-Q series of NPN medium power transistors designed for robust performance in demanding environments. The series utilizes a SOT89 package to provide a balance between power handling and surface-mount convenience. The Q-series designation signifies adherence to automotive quality standards, making these devices suitable for integration into vehicle electronics and other high-reliability systems requiring standardized discrete semiconductor components.

Replacement Considerations

BC868-Q

FAQ

What is the marking code for the BC868-25-Q?

The marking code for the BC868-25-Q is CDC.

What is the peak collector current rating for single pulses?

The peak collector current (ICM) is rated at 3 A for single pulses with a duration tp ≤ 1 ms.

How does the DC current gain of BC868-25-Q differ from BC868-Q?

The BC868-25-Q has a specified DC current gain range of 160 to 375 at VCE = 1 V and IC = 500 mA, whereas the standard BC868-Q ranges from 85 to 375 under the same conditions.