Diodes Incorporated BCP5616TTA

Overview

BCP5616TTA from Diodes Incorporated is an 80V NPN medium-power transistor in SOT223 package, rated for 1A continuous collector current and 2.5W power dissipation, with V_CE(sat) < 500 mV at I_C = 500 mA / I_B = 50 mA, h_FE = 63–250 (depending on bias), and f_T = 100–150 MHz - used in AF driver and output stages of audio amplifiers and medium-power switching circuits.

For engineers reviewing the BCP5616TTA datasheet, BCP5616TTA pinout, BCP5616TTA application, or BCP5616TTA equivalent, key selection criteria include V_CEO = 80 V, I_C = 1 A, thermal resistance R_θJA = 45.6 °C/W, saturation voltage performance under 500 mA load, and SOT223 lead-frame thermal capability for board-level power handling.

Technical Context

This NPN bipolar junction transistor operates in linear amplification and saturated switching modes, with guaranteed BV_CEO ≥ 80 V and BV_CBO ≥ 100 V to support robust voltage margin in 24–48 V industrial control rails. Its h_FE range spans 63–250 across I_C = 5 mA to 500 mA, enabling stable gain control in both small-signal pre-driver and medium-current output configurations.

Thermal design is anchored by R_θJL = 21.7 °C/W (junction-to-leads) and R_θJA = 45.6 °C/W (on 50 mm × 50 mm 2 oz Cu PCB), supporting sustained 1 A operation with appropriate copper pour. ESD ratings meet JEDEC Class 3A HBM (4 kV) and MM (400 V), suitable for assembly environments without ultra-high-ESD controls.

Key Specifications

Pinout & Package

SOT223 package with exposed collector tab for thermal conduction; molded green compound (UL 94V-0), matte tin-plated leads, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ZTX653 and MJD112, BCP5616TTA uniquely balances 80 V rating, SOT223 surface-mount thermal efficiency, and moderate gain - making it optimal for space-constrained 24–48 V industrial switching where leaded alternatives add cost and layout complexity.

Availability

BCP5616TTA is available at Aetrix Electronics and suitable for audio output stages, relay drivers, DC motor control, and linear regulator pass elements requiring stable component supply, RoHS compliance, and automotive-grade traceability options.

Supply support for BCP5616TTA 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, headquartered in Plano, Texas, with design, manufacturing, and distribution operations across Asia, Europe, and the Americas.

The BCP56xx series belongs to Diodes' general-purpose bipolar transistor product line, engineered for medium-power switching and amplification in industrial, consumer, and automotive-qualified applications where reliability, thermal performance, and consistent gain are essential.

FAQ

Is BCP5616TTA pin-compatible with BCP5610TTA or BCP5616TTC?

Yes - all BCP56xxT variants share identical SOT223 pinout (Emitter-Base-Collector-Tab) and mechanical dimensions. BCP5616TTA and BCP5616TTC differ only in reel size (1,000 vs. 4,000 units) and tape width (12 mm for both); electrical specs and marking code (BCP 5616T) are identical across TTA/TTC suffixes.

What is the maximum safe operating temperature for continuous 1 A collector current?

At I_C = 1 A and V_CE ≈ 1 V (typical in linear mode), power dissipation reaches ~1 W. With R_θJA = 45.6 °C/W and 25°C ambient, junction temperature rises ~46°C - well within the −55°C to +150°C rating. Full 2.5 W operation requires strict adherence to the 50 mm × 50 mm 2 oz Cu layout per datasheet Note 5.

Does BCP5616TTA require a base resistor in switching applications?

Yes - base current must be limited to avoid exceeding I_B(max) = 100 mA continuous. For I_C = 500 mA and minimum h_FE = 63, ≥8 mA base drive is needed; a 470 Ω resistor from a 5 V MCU GPIO limits I_B to ~10.6 mA, ensuring saturation while staying within safe operating area.

Can BCP5616TTA replace BC817-40 in SOT-23 designs?

No - BCP5616TTA uses SOT223 (4-pin, exposed collector tab), while BC817-40 is in SOT-23 (3-pin, no thermal pad). Pin count, footprint, thermal capacity, and current rating differ significantly; direct substitution would require PCB redesign and thermal validation. Use only if SOT223 layout and ≥1 A current capability are intentional design requirements.