Infineon Technologies BCP51-16E6327

Overview

BCP51-16E6327 from Infineon Technologies is a PNP silicon bipolar junction transistor designed for audio frequency driver and output stages in linear amplification circuits. It features V_CEO = 45 V, I_C = 1 A continuous, h_FE = 100–250 at I_C = 150 mA, V_CE(sat) ≤ 0.5 V at I_C = 500 mA/I_B = 50 mA, and operates up to T_j = 150 °C. It is used in automotive audio power stages and industrial DC-DC converter bias networks.

For engineers reviewing the BCP51-16E6327 datasheet, BCP51-16E6327 pinout, BCP51-16E6327 application, or BCP51-16E6327 equivalent, key selection criteria include guaranteed h_FE range at high I_C, low V_CE(sat) under switching conditions, thermal resistance R_thJS ≤ 15 K/W, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This PNP transistor employs epitaxial planar technology with a vertical structure optimized for high-current linear operation. Its base-emitter junction is engineered for stable h_FE across I_C = 5 mA to 500 mA and T_A = −55 °C to +150 °C, with tight V_CE(sat) distribution (≤0.5 V) enabling predictable thermal design in Class-AB output stages.

The device supports pulsed operation up to I_CM = 1.5 A (t_p ≤ 10 ms, D ≤ 2%), and its f_T = 125 MHz at I_C = 50 mA/V_CE = 10 V enables stable gain in AF bandwidths up to 20 kHz with margin. Thermal derating follows a defined P_tot vs. T_S curve with R_thJS ≤ 15 K/W measured from junction to soldering point.

Key Specifications

Pinout & Package

SOT223 package with standard 3-pin configuration: tab-connected collector, exposed metal pad for thermal dissipation, and molded plastic body rated for reflow soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCP51-16E6327, the BCP51-16H6327 offers identical performance in alternate packaging, while MMBT5087LT1G lacks the current handling, thermal capability, and automotive qualification needed for primary power-stage roles.

Availability

BCP51-16E6327 is available at Aetrix Electronics and suitable for automotive audio amplifiers, industrial DC-DC bias networks, and LED driver pre-regulators requiring stable component supply with AEC-Q101 assurance and RoHS compliance.

Supply support for BCP51-16E6327 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 AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete devices.

The BCP51-16E6327 belongs to Infineon's BCP5x family of AEC-Q101-qualified PNP transistors, developed specifically for high-reliability linear and switching applications in automotive and industrial power stages.

FAQ

Is BCP51-16E6327 pin-compatible with NPN complements like BCP54-16?

No - BCP51-16E6327 (PNP) and BCP54-16 (NPN) share identical SOT223 pinout (Base–Collector–Emitter), but polarity reversal means circuit topology must be adapted. Base drive polarity, supply referencing, and current direction differ fundamentally; they are complementary-not interchangeable-devices.

What is the maximum allowable PCB copper area for thermal performance?

Per Infineon Application Note AN2002-07, a minimum 100 mm² copper pour connected to the collector tab (Pin 2) is required to achieve R_thJA ≤ 60 K/W at 1 A. Larger areas improve thermal margin but do not reduce R_thJS, which remains ≤15 K/W regardless of layout.

Does BCP51-16E6327 support pulse operation above 1 A?

Yes - it supports I_CM = 1.5 A for pulses ≤10 ms with duty cycle ≤2%. This is validated per JEDEC JESD22-A111A; sustained operation above 1 A requires thermal derating per the P_tot vs. T_S curve and verification of junction temperature using R_thJS.

Can BCP51-16E6327 replace BC807-40 in existing designs?

No - BC807-40 is an SOT-23 PNP with I_C = 500 mA and R_thJA ≈ 250 K/W. BCP51-16E6327 delivers double the current and 17× better thermal resistance, but requires SOT223 footprint and revised thermal layout; direct substitution risks overheating or mechanical fit failure.