Diodes Incorporated BCP5616QTC

Overview

BCP5616QTC from Diodes Incorporated is an AEC-Q101-qualified NPN bipolar junction transistor in SOT223 package, rated for 80 V V_CEO, 1 A continuous collector current, and 2 W power dissipation. It delivers low saturation voltage (<500 mV at 500 mA/50 mA drive) and high DC current gain (h_FE = 100–250), enabling robust medium-power switching in automotive engine control modules and body electronics.

For engineers reviewing the BCP5616QTC datasheet, BCP5616QTC pinout, BCP5616QTC application, or BCP5616QTC equivalent, key selection criteria include its 80 V breakdown rating, thermal resistance (R_θJL = 19.4 °C/W), AEC-Q101 qualification, RoHS- and halogen-free compliance, and complementary PNP pairing with BCP5316Q.

Technical Context

This transistor operates as a medium-power NPN switch with fixed-gain architecture optimized for linear amplification and saturated switching in automotive subsystems. Its design supports stable DC current gain across 5 mA–500 mA collector currents and maintains <500 mV V_CE(sat) under 50 mA base drive - critical for minimizing conduction loss in 12 V battery-fed loads.

The device uses a thermally enhanced SOT223 package with direct-collector lead thermal path (R_θJL = 19.4 °C/W), enabling reliable operation up to +150 °C junction temperature. Its 100–150 MHz f_T and 25 pF C_obo support moderate-speed switching in ignition drivers and LED matrix controls without excessive ringing.

Key Specifications

Pinout & Package

SOT223 package with three leads: Collector (tab-connected), Base, and Emitter. The metal tab is electrically connected to the collector and serves as primary thermal path to PCB copper pour.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCP5416QTC and ZTX653STZ, BCP5616QTC uniquely combines 80 V ruggedness, AEC-Q101 certification, and low-saturation performance in a single qualified automotive-grade part - eliminating need for external qualification effort while supporting harsh-environment deployment.

Availability

BCP5616QTC is available at Aetrix Electronics and suitable for automotive engine control units, HVAC blower systems, LED headlamp drivers, and body control modules requiring stable component supply across multi-year production cycles.

Supply support for BCP5616QTC 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and consumer markets.

The BCP5x16Q series belongs to Diodes' AEC-Q101-qualified bipolar transistor portfolio, engineered specifically for automotive power switching and amplification where thermal stability, transient immunity, and long-term reliability are mandatory.

FAQ

Is BCP5616QTC pin-compatible with BCP5416QTC?

Yes - both share identical SOT223 pinout (Collector-Base-Emitter), mechanical dimensions, and thermal pad configuration. The only functional difference is breakdown voltage: BCP5616QTC offers 80 V V_CEO vs. 45 V for BCP5416QTC. No PCB redesign is required for substitution where voltage margin permits.

What is the maximum allowable junction temperature for continuous operation?

The absolute maximum junction temperature is +150 °C, and the device is rated for continuous operation across –55 °C to +150 °C. Derating begins above +25 °C ambient: power dissipation must be reduced by 16.1 mW/°C beyond that point, based on R_θJA = 62 °C/W for a 50 mm × 50 mm 1 oz copper layout.

Does BCP5616QTC require a heatsink in typical automotive applications?

Not typically - its R_θJL = 19.4 °C/W allows 1.03 W dissipation with only 20 °C rise above a 105 °C PCB temperature. When mounted on ≥50 mm² copper pour, it handles 1 A at 500 mV V_CE(sat) without external heatsinking in most under-dash or cabin-mounted modules.

Can BCP5616QTC be used in linear amplification mode?

Yes - its h_FE remains stable from 5 mA to 500 mA (25–250), and f_T = 100–150 MHz supports audio-frequency amplification. However, thermal design must account for simultaneous V_CE and I_C product - e.g., 5 V × 200 mA = 1 W requires adequate copper area to maintain T_J < 125 °C.