Infineon Technologies BCR 158 B6327

Overview

BCR 158 B6327 from Infineon Technologies is a PNP silicon digital transistor with integrated bias resistors (R1 = 2.2 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 BCR 158 B6327 datasheet, BCR 158 B6327 pinout, BCR 158 B6327 application, or BCR 158 B6327 equivalent, this part serves as a ready-to-use, resistor-equipped switch requiring no external base biasing - ideal for space-constrained logic-level interfacing and low-power load driving in automotive body electronics and embedded sensor signal conditioning.

Technical Context

This digital transistor integrates two precision on-chip resistors to configure a fixed-current-driven PNP switch. Its R1/R2 ratio of 0.047 enables stable saturation under varying temperature (–40 °C to 125 °C) and supports reliable turn-on/turn-off thresholds: V_i(on) = 0.5–1.1 V and V_i(off) = 0.4–0.8 V.

The device operates in common-emitter configuration with h_FE ≥ 70 at I_C = 5 mA / V_CE = 5 V, f_T = 200 MHz, and C_cb = 3 pF, making it suitable for medium-speed digital switching up to ~10 MHz with minimal propagation delay and low input drive current requirements.

Key Specifications

Pinout & Package

BCR 158 B6327 is housed in an SOT23 plastic surface-mount package (JEDEC TO-236AB), with 3 terminals: emitter (E), base (B), and collector (C). Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector - confirmed per Infineon package outline EHA07183 and marking layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCR158W B6327, the BCR 158 B6327 offers identical switching performance in a slightly larger SOT23 package with lower thermal dissipation margin; versus NSV15801T1G, it delivers higher frequency capability and tighter R1/R2 tolerance, supporting more deterministic timing in high-speed interface roles.

Availability

BCR 158 B6327 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and medical sensor interface designs requiring stable component supply, AEC-Q101 compliance, and RoHS-compliant packaging.

Supply support for BCR 158 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and discrete power devices, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.

The BCR158 series belongs to Infineon's automotive-qualified digital transistor product line, engineered specifically for robust, space-efficient switching in harsh-environment electronic control units where reliability and reduced component count are critical.

FAQ

Is BCR 158 B6327 pin-compatible with standard SOT23 PNP transistors?

No - BCR 158 B6327 has an internal resistor network connecting pins 1 (base) and 2 (emitter), so its pinout and function differ from bare PNP transistors like BC807 or MMBT3906. Direct substitution requires circuit validation to ensure bias network compatibility and avoid unintended conduction.

What is the maximum operating temperature for continuous DC operation?

The junction temperature must not exceed 150 °C. At ambient temperatures up to 85 °C, continuous operation is supported up to 100 mA only if the solder-point temperature (T_S) remains ≤102 °C - verified via thermal simulation or measurement using the published R_thJS ≤ 240 K/W curve.

Does BCR 158 B6327 support PWM switching?

Yes - with f_T = 200 MHz and V_CE(sat) ≤ 0.3 V, it supports PWM frequencies up to 10 MHz for low-duty-cycle loads. For 100 kHz–1 MHz motor or LED dimming, ensure gate drive rise/fall times are <100 ns to avoid excessive switching losses.

How does the built-in R1/R2 network affect input impedance?

The R1–R2 divider presents a Thevenin-equivalent input resistance of ~2.1 kΩ and voltage of ~0.1 V at the base node when driven high. This results in ~2.3 mA input current at 5 V logic high, enabling direct MCU GPIO drive without additional current limiting - confirmed by V_i(on) and I_B test conditions in the datasheet.