Infineon Technologies BCR 142L3 E6327

Overview

BCR 142L3 E6327 from Infineon Technologies is an NPN silicon digital transistor with integrated bias resistors (R1 = 22 kΩ, R2 = 47 kΩ), designed for switching, inverting, interface, and driver circuits in compact consumer 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 f_T = 150 MHz.

For engineers reviewing the BCR 142L3 E6327 datasheet, BCR 142L3 E6327 pinout, BCR 142L3 E6327 application, or BCR 142L3 E6327 equivalent, key selection criteria include built-in resistor ratio (R1/R2 ≈ 0.47), thermal resistance R_thJS ≤ 60 K/W, SOT23-3 package compatibility, and guaranteed V_i(off) ≤ 1.2 V for reliable logic-level interfacing.

Technical Context

This digital transistor integrates two precision on-chip resistors to enable direct connection to CMOS/TTL logic without external bias components. Its common-emitter configuration supports fast switching with transition frequency up to 150 MHz and low saturation voltage under defined drive conditions.

The device operates with a fixed internal resistor network (R1 = 22 kΩ, R2 = 47 kΩ) that sets base biasing for predictable turn-on/turn-off thresholds-V_i(on) = 0.8–2.5 V and V_i(off) = 0.5–1.2 V-ensuring robust noise immunity in digital signal routing applications.

Key Specifications

Pinout & Package

BCR 142L3 E6327 is housed in a standard SOT23-3 plastic surface-mount package with gull-wing leads and moisture sensitivity level (MSL) 1. The package measures 2.9 mm × 1.3 mm × 1.0 mm and is compatible with reflow soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCR142T and BCR142W, the BCR142L3 delivers the lowest junction-to-solder-point thermal resistance (≤60 K/W), enabling higher sustained current in thermally constrained SOT23 layouts-critical for dense PCBs in automotive body control modules and smart home hubs.

Availability

BCR 142L3 E6327 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface stages, relay driver modules, and MOSFET gate drivers requiring stable component supply and long-term industrial availability.

Supply support for BCR 142L3 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 to ISO/TS 16949 and ISO 14001.

The BCR142L3 belongs to Infineon's family of digital transistors engineered for logic-compatible switching in space-constrained, high-reliability applications-particularly where reduced bill-of-materials and assembly steps improve yield and field reliability.

FAQ

Is BCR 142L3 E6327 pin-compatible with standard SOT23-3 NPN transistors?

No-it uses the same SOT23-3 physical footprint but has an internal resistor network connecting pins 1 (B), 2 (E), and 3 (C). Pin 1 is not a bare base; it is the input node of the R1–R2 divider. Substituting with a standard BJT requires redesigning biasing and may cause incorrect switching behavior.

What is the maximum allowable continuous collector current at 85°C ambient?

At T_A = 85 °C with standard PCB copper area (1 cm²), derating curves indicate ~75 mA continuous I_C is sustainable. This follows from R_thJS ≤ 60 K/W and T_j(max) = 150 °C, yielding ΔT = 65 K → P_tot ≤ 1.08 W, then applying V_CE(sat) ≈ 0.25 V to estimate I_C limit.

Can BCR 142L3 E6327 be used in linear amplifier configurations?

No-it is optimized and characterized only for switching operation. The integrated resistors fix the base bias point, preventing adjustable Q-point selection. Small-signal parameters like h_FE variation and f_T are specified only under switching test conditions, not linear amplification.

Does this part meet AEC-Q101 requirements for automotive use?

No-BCR 142L3 E6327 is not AEC-Q101 qualified. While its construction and temperature ratings (T_j = 150 °C, T_stg = –65 to 150 °C) align with automotive environments, Infineon does not list it in their AEC-Q101-certified portfolio. For automotive applications, consider the AEC-Q101-qualified BCR142L3Q series instead.