Nexperia USA Inc. BCM856BSHX

Overview

BCM856BSHX from Nexperia is a PNP/PNP matched double transistor in SOT363 (SC-88) package, designed for precision analog functions requiring tight parameter matching between two transistors. It delivers V_CEO = −65 V, I_C = −100 mA per transistor, h_FE matching ratio of 0.95–1.05, and V_BE matching ≤ 2 mV at −2 mA, enabling stable current mirroring and differential amplification in high-temperature industrial signal conditioning circuits.

For engineers reviewing the BCM856BSHX datasheet, BCM856BSHX pinout, BCM856BSHX application, or BCM856BSHX equivalent, this device is selected for matched-pair analog circuitry where gain tracking, thermal coupling, and low mutual interference are critical - especially in current mirrors, differential pairs, and precision bias networks operating up to 175 °C.

Technical Context

The BCM856BSHX integrates two electrically isolated PNP transistors on a single die within a thermally coupled SOT363 package, ensuring correlated thermal drift and minimizing mismatch due to temperature gradients. Its design supports simultaneous operation with no mutual interference, verified by independent collector-emitter saturation voltage (V_CEsat ≤ −200 mV at −100 mA/−5 mA) and base-emitter voltage (V_BE = −655 mV typ. at −10 mA).

It operates across −55 °C to +175 °C ambient, with junction temperature rated to 175 °C and total device power dissipation of 400 mW on FR4 PCB. Thermal resistance from junction to ambient is 375 K/W per device, enabling reliable performance in compact, high-density analog modules without forced cooling.

Key Specifications

Pinout & Package

BCM856BSHX is housed in a 6-pin TSSOP (SOT363) surface-mount plastic package measuring 2.1 mm × 1.25 mm × 0.95 mm, with 0.65 mm lead pitch and optimized thermal pad layout for reflow soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar matched PNP transistor applications.

Compared with BCM856BSHX, BCM857BSH trades matching precision for higher voltage rating, while MBT3906DW1T1G lacks factory-matched specifications entirely - making BCM856BSHX the sole option for sub-1% current replication in industrial-grade analog circuits.

Availability

BCM856BSHX is available at Aetrix Electronics and suitable for current mirror circuits, differential amplifier front-ends, and temperature-stable bias networks requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BCM856BSHX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions, with leadership in automotive-qualified and industrial-grade components.

This device belongs to Nexperia's matched bipolar transistor product line, engineered specifically for analog signal path accuracy in harsh-environment applications where thermal tracking and parameter correlation are essential.

FAQ

What is the maximum junction temperature rating for BCM856BSHX?

The BCM856BSHX has a maximum junction temperature (T_j) of 175 °C, validated per IEC 60134 Absolute Maximum Ratings. This rating applies under continuous DC operation with proper PCB thermal design - specifically a single-sided FR4 board with 35 µm tin-plated copper and standard SOT363 footprint - enabling deployment in under-hood automotive sensors and industrial motor controllers.

Does BCM856BSHX support operation at −55 °C ambient?

Yes, BCM856BSHX is fully specified from −55 °C to +175 °C ambient temperature. Electrical parameters including h_FE, V_BE, and V_CEsat are characterized across this full range in the official Nexperia datasheet, with graphical data (Figs. 3–6) confirming stable gain and voltage behavior at cryogenic temperatures - critical for aerospace and outdoor infrastructure applications.

How is the V_BE matching value of ≤2 mV measured?

The V_BE1−V_BE2 matching value is defined as the absolute difference between the base-emitter voltages of the two transistors, measured under identical conditions: V_CE = −5 V, I_C = −2 mA, and T_amb = 25 °C. The smaller V_BE is subtracted from the larger, yielding a maximum differential of 2 mV - a factory-guaranteed limit, not a typical value.

Can BCM856BSHX replace discrete single-transistor SOT-23 packages in existing designs?

No - BCM856BSHX is not a drop-in replacement for single-transistor SOT-23 devices due to its 6-pin SOT363 footprint and internal dual-transistor topology. Pin mapping differs fundamentally (e.g., pins 1/2/6 form TR1; pins 3/4/5 form TR2), and electrical interaction between transistors is optimized for matched operation, not independent use. Redesign of layout and bias network is required.