Diodes Incorporated BCX5616QTC

Overview

BCX5616Q from Diodes Incorporated is an AEC-Q101 qualified 80V NPN medium-power bipolar junction transistor in SOT89 package, rated for 1A continuous collector current and 2A peak pulse current, with V_CE(sat) < 500 mV at 500 mA/50 mA drive-used in automotive AF driver stages and medium-power switching circuits.

For engineers reviewing the BCX5616Q datasheet, BCX5616Q pinout, BCX5616Q application, or BCX5616Q equivalent, key selection criteria include its 80V V_CEO, 100–250 h_FE range at 5–500 mA, 150 MHz f_T, AEC-Q101 qualification, and SOT89 thermal performance (R_θJL = 13 °C/W).

Technical Context

This NPN BJT employs epitaxial planar die construction for stable gain and low saturation voltage across temperature. Its 80V V_CEO and 100V V_CBO support robust operation in 42V automotive systems and industrial DC-DC pre-regulators.

Designed for linear and switching operation, it delivers h_FE ≥ 75 at 5 mA and ≥ 100 at 150 mA, with f_T = 150 MHz enabling audio-frequency amplification and fast-switching control up to ~100 kHz with appropriate base drive.

Key Specifications

Pinout & Package

Package: SOT89 - Surface-mount plastic package with exposed collector pad for enhanced thermal dissipation; UL 94V-0 rated, moisture sensitivity level 1, matte tin finish leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCX56-16, BCX5616Q adds automotive qualification and process control; compared with MJD127G, it offers superior thermal performance in space-constrained SOT89 layouts while trading off some voltage headroom.

Availability

BCX5616Q is available at Aetrix Electronics and suitable for automotive body control modules, industrial fan controllers, audio driver stages, and DC-DC pre-regulator switches requiring stable component supply and long-term lifecycle support.

Supply support for BCX5616Q 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 computing markets.

The BCX5616Q belongs to Diodes' AEC-Q101-qualified bipolar transistor family, engineered specifically for automotive-grade medium-power switching and amplification where thermal robustness and process traceability are mandatory.

FAQ

What is the maximum allowable junction temperature for BCX5616Q?

The BCX5616Q has an operating junction temperature range of –55°C to +150°C per its absolute maximum ratings. Continuous operation at +150°C requires derated power dissipation-e.g., ≤2 W on 50 mm × 50 mm 1 oz copper-and must account for ambient temperature, airflow, and PCB layout per the thermal derating curves in DS37024 Rev. 4–2.

Is BCX5616Q pin-compatible with BCX56-16?

Yes-BCX5616Q shares identical SOT89 pinout (E-B-C) and mechanical footprint with BCX56-16. However, BCX5616Q includes automotive-specific process controls, AEC-Q101 qualification, and PPAP documentation; substitution requires validation of qualification requirements in target application.

Does BCX5616Q require a heatsink in 1A continuous operation?

Not necessarily: with the exposed collector pad soldered to ≥15 mm × 15 mm 1 oz copper, BCX5616Q sustains 1A at 25°C ambient with ≤1 W dissipation (V_CE(sat) ≈ 0.45 V → 0.45 W). At higher ambient temperatures or with smaller copper areas, thermal simulation or empirical testing is recommended before omitting external heatsinking.

What does the "Q" suffix signify in BCX5616Q?

The "Q" suffix denotes Diodes Incorporated's automotive-grade product line: AEC-Q101 qualified, manufactured in IATF16949-certified facilities, PPAP-capable, and compliant with Green (halogen/antimony-free) and RoHS directives. It distinguishes this part from commercial-grade variants like BCX56-16.