Infineon Technologies BCR 135F E6327

Overview

BCR 135F E6327 from Infineon Technologies is an NPN silicon digital transistor with integrated bias resistors (R1 = 10 kΩ, R2 = 47 kΩ), designed for switching, inverting, and interface driver functions in low-power logic-level translation 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 - commonly used in automotive body control modules and industrial sensor interface stages.

For engineers reviewing the BCR 135F E6327 datasheet, BCR 135F E6327 pinout, BCR 135F E6327 application, or BCR 135F E6327 equivalent, key selection criteria include verified R1/R2 resistor ratio (0.21 typ.), guaranteed AEC-Q101 qualification, SOT-23 package thermal resistance (R_thJS ≤ 240 K/W), and input voltage thresholds (V_i(on) ≤ 1.4 V, V_i(off) ≥ 0.5 V) for reliable TTL/CMOS-level interfacing.

Technical Context

This device integrates two matched NPN transistors with monolithic bias networks in a single SOT-23 package, enabling compact dual-channel switching without external base resistors. Its fixed R1/R2 ratio (0.19–0.24) ensures consistent turn-on/off behavior across temperature (−40 °C to +125 °C) and supply variations.

The transistor operates in common-emitter configuration with DC current gain h_FE ≥ 70 at I_C = 5 mA, V_CE = 5 V, and exhibits f_T = 150 MHz for moderate-speed digital switching - suitable for PWM dimming drivers and microcontroller GPIO expansion where space and component count are constrained.

Key Specifications

Pinout & Package

BCR 135F E6327 uses the SOT-23 surface-mount package (3-pin, JEDEC TO-236AB), with standard pin 1 = Base, pin 2 = Emitter, pin 3 = Collector. The device is marked "E6327" on top, and its footprint complies with Infineon's EHs outline drawing (3.15 mm × 1.75 mm × 1.15 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC847BW,115 and NSVD120DP5T1G, BCR 135F E6327 uniquely delivers NPN low-side switching with factory-trimmed R1/R2 ratio and AEC-Q101 validation - making it optimal for automotive and industrial logic interface applications where resistor tolerance, qualification, and polarity are non-negotiable.

Availability

BCR 135F E6327 is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O modules, consumer appliance motor drives, and medical diagnostic equipment requiring stable component supply across extended product lifecycles.

Supply support for BCR 135F E6327 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 ICs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.

BCR 135F E6327 belongs to Infineon's BCR family of digital transistors - engineered specifically for replacing discrete transistor + resistor combinations in cost-sensitive, high-reliability switching applications across automotive and industrial markets.

FAQ

Is BCR 135F E6327 pin-compatible with standard SOT-23 NPN transistors like BC847?

No - BCR 135F E6327 has a dedicated pinout: pin 1 = Base (with internal R1/R2), pin 2 = Emitter, pin 3 = Collector. Standard BC847 uses pin 1 = Emitter, pin 2 = Base, pin 3 = Collector. Direct substitution will cause incorrect biasing and functional failure unless board layout and schematic are revised.

What is the maximum allowable input voltage applied to the base terminal?

The absolute maximum input reverse voltage (V_i(rev)) is 6 V, and forward voltage (V_i(fwd)) is 40 V. However, safe operation requires limiting input current via external series resistance if driven above 5 V, since internal R1 (10 kΩ) alone does not guarantee protection beyond 5 V logic levels.

Does BCR 135F E6327 support PWM switching at 25 kHz?

Yes - with f_T = 150 MHz and V_CE(sat) ≤ 0.3 V, it supports clean 25 kHz PWM switching for loads up to 100 mA. Rise/fall times are typically <15 ns (inferred from f_T and C_cb = 3 pF), ensuring minimal switching loss and EMI generation in motor and LED control.

How does the AEC-Q101 qualification impact design validation for non-automotive use?

AEC-Q101 qualification confirms robustness against temperature cycling, high-temperature reverse bias, and ESD (≥2 kV HBM). For industrial or medical designs, this translates to higher confidence in long-term reliability under thermal stress and electrical transients - reducing need for redundant qualification testing in harsh-environment deployments.