Infineon Technologies BCR133WH6327XTSA1

Overview

BCR133WH6327XTSA1 from Infineon Technologies is an NPN silicon digital transistor with integrated bias resistors (R1 = R2 = 10 kΩ), designed for low-power switching in interface and drive circuits. It supports 50 V V_CEO, 100 mA I_C, 0.3 V V_CE(sat) at I_C/I_B = 20, and operates up to 150 °C junction temperature - used in automotive body control modules for LED indicator drivers.

For engineers reviewing the BCR133WH6327XTSA1 datasheet, BCR133WH6327XTSA1 pinout, BCR133WH6327XTSA1 application, or BCR133WH6327XTSA1 equivalent, key selection criteria include built-in resistor matching, AEC-Q101 qualification, SOT323 package thermal resistance (R_thJS ≤ 105 K/W), and guaranteed V_i(off) ≤ 1.5 V for reliable logic-level interfacing.

Technical Context

This device integrates two matched NPN transistors in a single SOT323 package with isolated die and identical bias networks. Its dual-transistor topology enables differential signal handling or redundant switching paths without external resistor matching.

The internal R1/R2 ratio (0.9–1.1) ensures consistent turn-on/off thresholds across temperature (−40 °C to 125 °C), while the 130 MHz f_T supports fast edge transitions in 5 V logic-driven loads such as automotive door module status indicators.

Key Specifications

Pinout & Package

BCR133WH6327XTSA1 uses the SOT323 (SC-70) surface-mount package: 2.1 mm × 1.25 mm × 0.95 mm, lead pitch 0.65 mm, RoHS-compliant matte tin plating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCR133WH6327XTSA1, the BCR133S offers superior thermal dissipation in a larger package, while the BC847BW demands external biasing but provides wider h_FE range - making the WH variant optimal for space-constrained, AEC-Q101-compliant dual-switch designs.

Availability

BCR133WH6327XTSA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial I/O modules, smart lighting control, and consumer appliance UI panels requiring stable component supply and long-term lifecycle support.

Supply support for BCR133WH6327XTSA1 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 is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs.

BCR133WH6327XTSA1 belongs to Infineon's BCR family of digital transistors, engineered specifically for AEC-Q101-compliant automotive interface and switching applications where space, reliability, and integration are critical.

FAQ

What is the maximum operating temperature for BCR133WH6327XTSA1?

The junction temperature limit is 150 °C, and the package is rated for soldering-point temperatures up to 124 °C. Derating curves show 250 mW total power dissipation is permissible only when the soldering-point temperature remains ≤124 °C - exceeding this requires proportional power reduction per the P_tot vs. T_S graph in the datasheet.

Can BCR133WH6327XTSA1 replace a standard BJT like BC847 in existing designs?

Yes, but only if the circuit relies on logic-level drive and does not require adjustable base current. The integrated 10 kΩ resistors fix the input impedance and threshold - removing them would require redesigning the base drive network and verifying V_i(on)/V_i(off) compatibility with the controller.

Is the dual-transistor structure internally isolated or shared?

The two NPN transistors share a common emitter (Pin 2) but have electrically isolated collector and base nodes. This configuration supports parallel switching, differential signaling, or redundancy - confirmed by the separate C1/B1 and C2/B2 pin assignments in the BCR133S variant and the shared emitter topology in the WH marking.

Does BCR133WH6327XTSA1 support PWM frequencies above 10 kHz?

Yes - its 130 MHz transition frequency and 3 pF C_cb enable clean switching up to at least 5 MHz. At 10 kHz PWM, rise/fall times are well below 100 ns, ensuring minimal dead-time distortion and efficient LED or relay control without added snubbing components.