Infineon Technologies BCR142WH6327XTSA1

Overview

BCR142WH6327XTSA1 from Infineon Technologies is an NPN silicon digital transistor with integrated bias resistors (R1 = 22 kΩ, R2 = 47 kΩ), designed for switching, inverting, interface, and driver circuits in automotive and industrial control systems. It features V_CEO = 50 V, I_C = 100 mA, V_CE(sat) ≤ 0.3 V at I_C = 10 mA / I_B = 0.5 mA, and AEC-Q101 qualification.

For engineers reviewing the BCR142WH6327XTSA1 datasheet, BCR142WH6327XTSA1 pinout, BCR142WH6327XTSA1 application, or BCR142WH6327XTSA1 equivalent, this page delivers verified electrical characteristics, thermal performance curves, SOT323 package details, and automotive-grade reliability context - all critical for signal-level logic interfacing and low-power load switching design validation.

Technical Context

This digital transistor integrates two on-chip resistors to enable direct microcontroller GPIO drive without external biasing. Its common-emitter configuration supports DC current gain (h_FE) ≥ 70 at I_C = 5 mA and V_CE = 5 V, with input threshold voltages Vi(on) = 0.8–2.5 V and Vi(off) = 0.5–1.2 V under defined test conditions.

Thermal resistance R_thJS ≤ 105 K/W (SOT323) enables stable operation up to T_J = 150 °C. The device exhibits f_T = 150 MHz and C_cb = 3 pF, supporting fast switching in digital logic translation and level-shifting applications where propagation delay and capacitive loading matter.

Key Specifications

Pinout & Package

BCR142WH6327XTSA1 is housed in a RoHS-compliant SOT323 (SC-70) plastic surface-mount package, measuring 2.1 mm × 1.25 mm × 0.9 mm, optimized for high-density PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCR142WH6327XTSA1, BC847BW offers higher gain but demands external biasing, increasing design complexity; NSVDARF03MXV6T1G provides matched footprint and AEC-Q101 rating but inverts logic polarity and reduces available V_CE margin in 12 V systems.

Availability

BCR142WH6327XTSA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input conditioning, and IoT sensor node power management requiring stable component supply and long-term lifecycle support.

Supply support for BCR142WH6327XTSA1 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification infrastructure.

BCR142WH6327XTSA1 belongs to Infineon's BCRx family of digital transistors, engineered specifically for space-constrained, high-reliability switching in automotive and industrial environments where simplified biasing and AEC-Q101 compliance are mandatory.

FAQ

What is the maximum junction temperature and how does it affect continuous operation?

The absolute maximum junction temperature (T_J) is 150 °C. At ambient temperatures above 85 °C, derating is required: total power dissipation drops linearly from 250 mW at T_S = 25 °C to zero at T_S = 124 °C (SOT323). Thermal resistance R_thJS ≤ 105 K/W must be accounted for in board-level thermal design to avoid exceeding T_J.

Can BCR142WH6327XTSA1 replace a standard BJT like BC847 in existing designs?

No - it is not a direct replacement due to integrated bias resistors. Swapping requires removing external base resistors and verifying logic thresholds (Vi(on)/Vi(off)) match the driving source. Unlike BC847, BCR142W operates as a two-terminal-input device, simplifying drive but limiting bias flexibility.

Is the SOT323 package lead-free and compliant with modern assembly processes?

Yes - BCR142WH6327XTSA1 uses a Pb-free (RoHS-compliant) SOT323 package qualified for reflow soldering per JEDEC J-STD-020. Its 0.65 mm pitch and 0.9 mm height support fine-pitch automated placement and compatibility with standard IR/reflow profiles used in automotive electronics manufacturing.

How does the resistor ratio R1/R2 = 0.47 impact switching behavior?

The R1/R2 ratio of 0.47 sets the internal base bias point to ensure reliable saturation at low input currents. With R1 = 22 kΩ pulling base toward V_IN and R2 = 47 kΩ pulling it toward emitter, the net bias favors strong turn-on when V_IN exceeds Vi(on) (0.8–2.5 V), minimizing risk of partial conduction or thermal runaway in digital switching modes.