Infineon Technologies BCR 148L3 E6327

Overview

BCR 148L3 E6327 from Infineon Technologies is an NPN silicon digital transistor with integrated bias resistors (R1 = R2 = 47 kΩ), designed for switching, inverting, and interface driver functions in automotive and industrial control circuits. It features V_CEO = 50 V, I_C = 100 mA, V_CE(sat) ≤ 0.3 V at I_C/I_B = 20, h_FE ≥ 70, and AEC-Q101 qualification.

For engineers reviewing the BCR 148L3 E6327 datasheet, BCR 148L3 E6327 pinout, BCR 148L3 E6327 application, or BCR 148L3 E6327 equivalent, key selection criteria include built-in resistor matching, thermal resistance (R_thJS ≤ 240 K/W), SOT23 package compatibility, and guaranteed DC current gain across −40°C to 125°C.

Technical Context

This device integrates two matched NPN transistors with precision bias resistors in a single SOT23-3 package, enabling compact dual-channel switching without external base resistors. Its R1/R2 ratio of 0.9–1.1 ensures consistent turn-on/off thresholds across temperature (−40°C to 125°C) and process variation.

The transistor operates in common-emitter configuration with defined V_i(on) (1–3 V) and V_i(off) (0.8–1.5 V) thresholds, supporting direct logic-level interfacing with microcontrollers and FPGAs. Thermal derating follows a defined P_tot vs. T_S curve, with maximum junction temperature limited to 150°C.

Key Specifications

Pinout & Package

BCR 148L3 E6327 uses the SOT23-3 surface-mount package (JEDEC TO-236AB), with 1.3 mm × 2.9 mm footprint and 1.15 mm height. Pin 1 = Base (B), Pin 2 = Emitter (E), Pin 3 = Collector (C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC847B,215 and MMBT3904LT1G, BCR 148L3 E6327 delivers verified resistor-matched switching, AEC-Q101 assurance, and guaranteed h_FE ≥ 70 - critical for zero-defect automotive production and simplified design validation.

Availability

BCR 148L3 E6327 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and consumer appliance control boards requiring stable component supply and long-term lifecycle support.

Supply support for BCR 148L3 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 electronics, and industrial control ICs, with global manufacturing and quality certification aligned to ISO/TS 16949.

BCR 148L3 E6327 belongs to Infineon's BCR family of digital transistors - engineered specifically for AEC-Q101-compliant, space-efficient switching in automotive and industrial systems where reliability and integration reduce bill-of-materials count.

FAQ

Is BCR 148L3 E6327 pin-compatible with standard SOT23 NPN transistors like BC847?

No. While both use SOT23-3 packages, BCR 148L3 E6327 has internal bias resistors connected to Pin 1 (Base), whereas BC847 has an uncommitted base terminal. Direct substitution would short the base through R1/R2, causing incorrect switching behavior or device failure.

What is the maximum allowable continuous collector current at 105°C ambient?

At T_S = 105°C, the derated total power dissipation is 100 mW (per Fig. 5). With V_CE(sat) ≤ 0.3 V, the maximum continuous I_C is approximately 333 mA - but the absolute rated I_C remains 100 mA per datasheet limits, enforced by bond wire and junction reliability constraints.

Does BCR 148L3 E6327 support 1.8 V logic-level drive?

No. Its V_i(on) specification starts at 1 V min (typ. 2 V), and guaranteed turn-on occurs only above 1 V. At 1.8 V, operation is marginal and not characterized; use only with ≥3.3 V logic families or add external level-shifting if interfacing with 1.8 V MCUs.

How does the R1/R2 ratio tolerance affect switching consistency in parallel channels?

The R1/R2 ratio tolerance of 0.9–1.1 ensures ≤±10% mismatch in threshold voltage between channels. In dual-transistor variants like BCR148S, this enables synchronized switching within 5 ns skew across temperature, critical for balanced current sharing in redundant driver circuits.