Infineon Technologies BCR 133 B6327

Overview

BCR 133 B6327 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, 200 mW P_tot at T_S ≤ 102°C, and operates up to 150°C junction temperature - used in automotive body control modules for LED indicator drivers.

For engineers reviewing the BCR 133 B6327 datasheet, BCR 133 B6327 pinout, BCR 133 B6327 application, or BCR 133 B6327 equivalent, key selection criteria include input threshold voltage (V_i(on) = 1–2.5 V), saturation performance (V_CE(sat) ≤ 0.3 V @ I_C/I_B = 20), thermal resistance (R_thJS ≤ 240 K/W), and AEC-Q101 qualification for automotive use.

Technical Context

This digital transistor integrates two matched on-chip resistors to enable single-pin logic-level control without external biasing. Its common-emitter configuration delivers predictable switching behavior with h_FE ≥ 30 at I_C = 5 mA and V_CE = 5 V, and exhibits stable V_i(off) (0.8–1.5 V) and V_i(on) (1–2.5 V) across −40°C to 125°C.

The device uses a monolithic SOT23 package with defined pinout (1 = B, 2 = E, 3 = C), optimized for surface-mount assembly and thermal dissipation up to 200 mW at board temperature ≤ 102°C. Its f_T = 130 MHz enables reliable operation in medium-speed digital interfaces.

Key Specifications

Pinout & Package

SOT23 plastic surface-mount package (3-pin, standard JEDEC outline), 1.3 mm × 2.9 mm footprint, 1.15 mm height, Pb-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC847B,115 and NSVD120DP03MX, the BCR 133 B6327 uniquely combines NPN polarity, matched 10 kΩ bias resistors, AEC-Q101 qualification, and SOT23 packaging - delivering lowest component count and highest automotive readiness for low-side digital switching.

Availability

BCR 133 B6327 is available at Aetrix Electronics and suitable for automotive interior lighting, industrial PLC input stages, and consumer appliance control requiring stable component supply and AEC-Q101 compliance.

Supply support for BCR 133 B6327 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, and industrial control ICs and discrete devices.

The BCR133 series belongs to Infineon's automotive-qualified digital transistor product line, engineered specifically for space-constrained, high-reliability switching in 12 V/24 V vehicle subsystems and industrial control interfaces.

FAQ

What is the maximum ambient temperature for continuous operation of BCR 133 B6327?

The device is rated for junction temperature up to 150°C. With R_thJS ≤ 240 K/W and P_tot = 200 mW at T_S ≤ 102°C, sustained ambient operation depends on PCB copper area and airflow. In typical 2-layer FR4 with 1 cm² copper pour, max ambient is ~85°C at full load - verified per AN077 thermal modeling guidelines.

Can BCR 133 B6327 replace a standard BJT like BC847 in existing designs?

Yes, but only if the circuit uses base biasing through a single resistor. The BCR133 B6327 integrates R1 and R2, so it replaces both the transistor and its base resistor. Direct substitution without removing the external resistor will cause incorrect biasing and potential saturation failure.

Is the pinout of BCR 133 B6327 compatible with SOT23-standard footprints?

Yes - pin 1 (Base), pin 2 (Emitter), pin 3 (Collector) matches JEDEC TO-236AB (SOT23) standard orientation. Footprint dimensions (2.9 mm × 1.3 mm, 0.95 mm pitch) align with IPC-7351B generic SOT23 land pattern, confirmed by Infineon package drawing EHA07174.

Does BCR 133 B6327 support PWM-driven loads?

Yes - with f_T = 130 MHz and V_CE(sat) stable across temperature, it supports PWM frequencies up to 20 kHz for LED dimming or solenoid control. Rise/fall times are <20 ns at I_C = 10 mA, ensuring minimal switching loss in duty-cycled applications.