Infineon Technologies BCX5516H6327XTSA1

Overview

BCX5516H6327XTSA1 from Infineon Technologies is an NPN silicon bipolar junction transistor designed for audio-frequency driver and output stages in automotive and industrial power amplifiers. It features a 60 V collector-emitter breakdown voltage (V_(BR)CEO), 1 A continuous collector current (I_C), 0.5 V collector-emitter saturation voltage (V_CE(sat)) at I_C = 500 mA / I_B = 50 mA, DC current gain (h_FE) of 100–250 at I_C = 150 mA, and operates up to 150 °C junction temperature.

For engineers reviewing the BCX5516H6327XTSA1 datasheet, BCX5516H6327XTSA1 pinout, BCX5516H6327XTSA1 application, or BCX5516H6327XTSA1 equivalent, key selection criteria include its SOT-89 package thermal resistance (R_thJS ≤ 15 K/W), AEC-Q101 qualification, low V_CE(sat), and complementary PNP pairing with BCX51–BCX53 series in push-pull amplifier designs.

Technical Context

This transistor operates as a linear or switching NPN device in medium-power analog and digital interface circuits. Its design supports stable DC biasing across –50 °C to +150 °C ambient, with h_FE maintained ≥25 at I_C = 5 mA and ≥100 at I_C = 150 mA under V_CE = 2 V conditions.

The BCX5516 variant is rated for V_CEO = 60 V and V_CBO = 60 V, distinguishing it from BCX54 (45 V) and BCX56 (80 V). Its f_T = 100 MHz at I_C = 50 mA / V_CE = 10 V enables use in high-fidelity AF signal paths up to ~10 MHz effective bandwidth.

Key Specifications

Pinout & Package

BCX5516H6327XTSA1 is housed in a surface-mount SOT-89 package with three terminals: Pin 1 = Base (B), Pin 2 = Collector (C), Pin 3 = Emitter (E). The exposed collector tab serves as both electrical connection and primary thermal path to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCX55-16, BCX5516H6327XTSA1 offers identical performance in a standardized 4000-piece reel optimized for high-volume SMT lines; versus MJD112G, it trades voltage headroom for superior thermal efficiency and smaller footprint in automotive audio and lighting applications.

Availability

BCX5516H6327XTSA1 is available at Aetrix Electronics and suitable for automotive audio amplifier output stages, industrial motor driver interfaces, and LED driver circuits requiring stable component supply with AEC-Q101 qualification and SOT-89 thermal performance.

Supply support for BCX5516H6327XTSA1 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 BCX54–BCX56 family was developed specifically for high-reliability, medium-power analog switching in automotive and industrial environments, emphasizing thermal robustness, AEC-Q101 compliance, and complementary PNP/NPN pairing.

FAQ

Is BCX5516H6327XTSA1 pin-compatible with BCX54 or BCX56?

Yes - all BCX54/55/56 variants share identical SOT-89 pinout (B-C-E) and mechanical footprint. However, V_CEO ratings differ: BCX54 = 45 V, BCX55 = 60 V, BCX56 = 80 V. Substitution requires verification of voltage margin in the target circuit.

What is the maximum allowable base current for continuous operation?

The absolute maximum base current (I_B) is 100 mA per datasheet. For reliable long-term operation, design base drive to deliver ≤50 mA under worst-case V_BE(ON) ≈ 1 V and ambient temperature extremes, ensuring h_FE remains within specified range.

Does BCX5516H6327XTSA1 require a heatsink in 1 A switching applications?

Not necessarily - with R_thJS ≤15 K/W and P_tot = 2 W at T_S = 120 °C, a minimum 25 mm² copper pour under the collector tab typically suffices for 1 A pulsed or 0.7 A continuous operation. Full 1 A DC requires ≥50 mm² thermal pad or forced airflow.

Can BCX5516H6327XTSA1 be used in linear regulator configurations?

Yes - its stable h_FE (100–250), low V_CE(sat), and 150 °C T_j rating make it suitable as a pass transistor in adjustable linear regulators. Ensure power dissipation stays within P_tot derating curve and maintain V_CE < 60 V under all load/transient conditions.