Diodes Incorporated BCP69TA

Overview

BCP69TA from ON Semiconductor is a PNP silicon planar medium-power transistor designed for audio-frequency driver and output stage applications, featuring V_CEO = −20 V, I_C = −1 A continuous, V_CE(sat) = −0.5 V at I_C = −1 A / I_B = −100 mA, h_FE = 50–400 (depending on bias), and SOT-223 package for enhanced thermal dissipation in compact PCB layouts.

For engineers reviewing the BCP69TA datasheet, BCP69TA pinout, BCP69TA application, or BCP69TA equivalent, key selection considerations include its complementary pairing with BCP68, low saturation voltage under medium-current switching, DC current gain behavior across operating ranges, and thermal derating capability in SOT-223 surface-mount configurations.

Technical Context

This PNP bipolar junction transistor operates in linear amplification and saturated switching modes, with guaranteed V_(BR)CEO = −20 V and V_(BR)CBO = −25 V ensuring robust reverse-bias safety in amplifier output stages. Its h_FE range spans 50 to 400 across I_C = −5 mA to −500 mA, supporting both small-signal biasing and medium-current drive.

The device uses a planar epitaxial structure with emitter ballasting for improved current sharing and reliability. With f_T = 100 MHz at I_C = −100 mA, it supports high-fidelity AF signal handling but is not rated for RF or switching power supply primary-side operation.

Key Specifications

Pinout & Package

SOT-223 package with exposed collector tab for thermal conduction to PCB copper; standard 4-pin outline (3 active + 1 thermal pad), lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP medium-power transistor applications.

Compared with ZTX951 and MJD2955, BCP69TA delivers the best balance of low-profile SOT-223 packaging, predictable h_FE across audio bias points, and minimal V_CE(sat) for thermally constrained medium-power PNP roles - making it preferred for compact audio, regulated supply, and LED driver modules.

Availability

BCP69TA is available at Aetrix Electronics and suitable for audio output stages, DC motor drivers, linear voltage regulators, and LED current sinks requiring stable component supply and repeatable thermal performance in SMT production.

Supply support for BCP69TA 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

ON Semiconductor is a global semiconductor supplier focused on energy-efficient electronics, delivering discrete, analog, and logic solutions for automotive, industrial, and consumer markets.

The BCP69TA belongs to ON Semiconductor's general-purpose bipolar transistor product line, engineered for reliable medium-power linear and switching applications in cost-sensitive, thermally constrained PCB designs.

FAQ

Is BCP69TA pin-compatible with BCP68?

No - BCP69TA is PNP and BCP68 is NPN; they share identical SOT-223 pinout (E-B-C-tab), but polarity reversal means direct substitution without circuit redesign is unsafe. Their complementary use is intentional in push-pull topologies, not drop-in replacement.

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

With 1-in² (6.45 cm²) of 2-oz copper connected to the collector tab, BCP69TA achieves R_θJA ≈ 62.5°C/W. Larger copper areas further reduce thermal resistance, but diminishing returns occur beyond 2-in²; no minimum copper area is specified, though <0.5-in² risks exceeding T_j = 150°C at >1 W.

Does BCP69TA support pulsed operation beyond I_C = −1 A?

Yes - absolute maximum I_CM = −2 A applies to pulsed conditions (pulse width ≤300 µs, duty cycle ≤2%). This enables short-duration surge handling in motor startup or audio transient peaks, provided average power remains within 2 W limits and thermal mass prevents junction overheating.

Can BCP69TA replace BC807 in SOT-23 designs?

No - BCP69TA uses SOT-223, which is physically incompatible with SOT-23 footprints. While both are PNP transistors, BC807 has lower I_C (−500 mA), lower P_tot (310 mW), and different gain profile; swapping requires PCB redesign, thermal reassessment, and bias network adjustment.