BCX71K_D87Z

Overview

The BCX71K_D87Z is a PNP silicon epitaxial planar transistor manufactured by onsemi. It is housed in an SOT-23-3 surface-mount package with dimensions of 2.92 mm length, 0.93 mm height, and 1.60 mm width. The device features a maximum collector-emitter voltage (VCEO) of -45 V and a collector-base voltage (VCBO) of -45 V. The emitter-base voltage (VEBO) rating is -5 V. Maximum DC collector current is specified at 0.5 A, with a DC current gain (hFE) up to 630. Collector-emitter saturation voltage is 0.55 V at IC = -500 mA and IB = -50 mA. Operating temperature range spans from -55 °C to +150 °C.

Feature Summary

• PNP polarity configuration for single-ended switching and amplification applications
• Epitaxial planar silicon construction ensuring stable thermal performance
• SOT-23-3 surface-mount packaging optimized for automated assembly processes

Applications

• General-purpose signal amplification circuits
• Low-power switching applications
• Audio pre-amplifier stages

Procurement Notes

Verify the specific suffix D87Z against official onsemi documentation to confirm tape-and-reel packaging specifications. Ensure RoHS compliance status matches current regulatory requirements for your target market. Cross-reference the manufacturer part number with distributor databases to confirm availability and authenticity through authorized channels before procurement.

Selection Notes

Select this component when a compact PNP transistor with moderate current handling capability is required. The SOT-23-3 package suits space-constrained designs. Verify that the -45 V voltage ratings align with circuit supply levels. Consider the hFE range for biasing stability in amplifier configurations. Ensure thermal management supports the +150 °C junction temperature limit during operation.

Part Context

This component belongs to onsemi's general-purpose bipolar junction transistor lineup. It serves as a discrete semiconductor solution for analog and digital switching tasks. The SOT-23-3 form factor is widely used in portable electronics and consumer devices requiring small footprint components. It complements NPN counterparts in complementary pairs for push-pull configurations.

Replacement Considerations

Consult onsemi datasheets for direct pin-compatible alternatives within the BCX71 series. Verify electrical parameters such as VCEO, IC max, and hFE match or exceed original requirements. Check package compatibility and thermal characteristics before substitution.