Nexperia USA Inc. BCW71,215

Overview

BCW71,215 from Nexperia is an NPN general-purpose bipolar junction transistor (BJT) in SOT23 package, rated for 45 V V_CEO, 100 mA I_C, and 250 mW P_tot, with DC current gain h_FE of 110–220 at I_C = 2 mA. It serves as a low-noise switching or small-signal amplification device in compact consumer and industrial control circuits.

For engineers reviewing the BCW71,215 datasheet, BCW71,215 pinout, BCW71,215 application, or BCW71,215 equivalent, key selection factors include its 100 MHz f_T, 2.5 pF C_c, 120–250 mV V_CEsat at I_C = 10–50 mA, noise figure ≤10 dB at 1 kHz, and SOT23 thermal resistance of 500 K/W - all critical for low-power analog and digital interface designs.

Technical Context

This NPN BJT operates in linear or saturation mode with base-driven control logic, supporting continuous DC biasing or pulsed switching up to 100 MHz. Its low V_BE (550–700 mV) and tight h_FE spread enable predictable current mirroring and emitter-follower configurations.

The device features low collector capacitance (2.5 pF) and low noise performance (≤10 dB NF), making it suitable for audio preamplifier stages and RF front-end bias networks where signal integrity and minimal parasitic loading are essential.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package with gull-wing leads; 3-pin configuration optimized for automated assembly and thermal performance on FR4 PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose transistor applications.

Compared with BC846B,215 and MMBT3904LT1G, BCW71,215 offers narrower h_FE spread and lower noise figure - advantageous in precision analog stages - while maintaining identical SOT23 footprint and pinout for drop-in replacement in existing designs.

Availability

BCW71,215 is available at Aetrix Electronics and suitable for audio preamplifiers, LED driver switches, and logic-level translators requiring stable component supply and long-term manufacturability.

Supply support for BCW71,215 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

Nexperia is a global leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP's Standard Products division in 2017 and focused on automotive, industrial, computing, and consumer markets.

BCW71,215 belongs to Nexperia's general-purpose BJT portfolio, engineered for reliability and consistency in cost-sensitive, high-volume analog and digital interface applications.

FAQ

Is BCW71,215 pin-compatible with BCW72?

Yes - both share identical SOT23 pinout (Pin 1: Base, Pin 2: Emitter, Pin 3: Collector) and mechanical footprint. However, BCW72 has higher h_FE (200–450 vs. 110–220) and same V_CEO/I_C ratings, so substitution requires verification of gain-dependent circuit stability.

What is the maximum operating temperature for BCW71,215 in continuous operation?

The junction temperature limit is 150 °C, and the storage temperature range is −65 °C to +150 °C. At ambient temperatures above 25 °C, power dissipation must be derated per the 500 K/W thermal resistance - e.g., max 125 mW at +75 °C ambient.

Can BCW71,215 be used in RF applications?

It is suitable for low-frequency RF functions such as bias networks and oscillator buffers up to ~30 MHz, supported by its 100 MHz f_T and 2.5 pF collector capacitance. It is not recommended for power amplification or high-Q tuned circuits above VHF.

Does BCW71,215 have a PNP complement in the same package?

Yes - BCW69 and BCW70 are the designated PNP complements, also in SOT23 package, with matching voltage/current ratings and complementary pinout (Pin 1: Emitter, Pin 2: Base, Pin 3: Collector), enabling balanced push-pull or differential pair designs.