Infineon Technologies BCR108WE6327BTSA1

Overview

BCR108WE6327BTSA1 from Infineon Technologies is an NPN 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, h_FE ≥ 70, and AEC-Q101 qualification.

For engineers reviewing the BCR108WE6327BTSA1 datasheet, BCR108WE6327BTSA1 pinout, BCR108WE6327BTSA1 application, or BCR108WE6327BTSA1 equivalent, key selection criteria include built-in resistor ratio (R1/R2 = 0.047), thermal resistance R_thJS ≤ 105 K/W, SOT323 package footprint, and guaranteed operation up to T_j = 150 °C in automotive-grade environments.

Technical Context

This device integrates two matched NPN transistors with monolithic bias networks in a single SOT323 package, enabling compact dual-channel logic-level switching without external base resistors. Its R1/R2 ratio of 0.047 ensures stable saturation under varying temperature conditions (–40 °C to 125 °C) and supports direct microcontroller GPIO interfacing.

The BCR108W variant delivers P_tot = 250 mW at T_S ≤ 124 °C and exhibits f_T = 170 MHz, making it suitable for medium-speed digital signal routing where low propagation delay and predictable turn-on/off thresholds are required.

Key Specifications

Pinout & Package

SOT323 package: 3-pin surface-mount plastic case with gull-wing leads, 1.3 mm × 2.13 mm footprint, 0.95 mm height, and moisture sensitivity level (MSL) 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCR108WE6327BTSA1, the E6327HTSA1 offers lower thermal performance in a larger package, while the SE6327HTSA1 provides dual functionality in a slightly larger footprint-neither matches the BCR108W's combination of SOT323 size, 250 mW rating, and 105 K/W thermal resistance.

Availability

BCR108WE6327BTSA1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial programmable logic controller (PLC) input stages, and USB power management systems requiring stable component supply and AEC-Q101 compliance.

Supply support for BCR108WE6327BTSA1 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, with global manufacturing and quality certification aligned to ISO/TS 16949.

The BCR108 family belongs to Infineon's digital transistor product line, engineered specifically for automotive and industrial interface applications requiring integrated biasing, high reliability, and compact packaging.

FAQ

What is the maximum junction temperature for BCR108WE6327BTSA1?

The absolute maximum junction temperature is 150 °C, verified per JEDEC JESD22-A108 and maintained under specified thermal conditions (T_S ≤ 124 °C). Operation above this limit risks permanent degradation of h_FE and increased leakage currents, especially IEBO and ICBO.

Does BCR108WE6327BTSA1 require external base resistors?

No. It integrates R1 = 2.2 kΩ and R2 = 47 kΩ internally, forming a fixed-voltage divider that biases the transistor into saturation when driven by logic-level signals. This eliminates external components for standard 3.3 V or 5 V GPIO interfacing.

How does the R1/R2 ratio affect switching behavior?

The R1/R2 ratio of 0.047 sets the input threshold voltage range (V_i(on) = 0.5–1.1 V, V_i(off) = 0.4–0.8 V), ensuring predictable turn-on and turn-off points across temperature and supply variations-critical for noise-immune digital switching in automotive environments.

Is BCR108WE6327BTSA1 compatible with lead-free reflow profiles?

Yes. It uses a Pb-free (RoHS-compliant) SOT323 package qualified for standard JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C for 30 seconds, with MSL 1 handling requirements.