Diodes Incorporated 2DC4672-13

Overview

2DC4672-13 from Diodes Incorporated is a 50V NPN medium-power transistor in SOT89 package, rated for 3A continuous collector current, with V_CE(sat) < 350 mV at 1 A and BV_CEO = 50 V. It serves as a high-current switch in load management, solenoid drivers, and DC-DC module power stages.

For engineers reviewing the 2DC4672-13 datasheet, 2DC4672-13 pinout, 2DC4672-13 application, or 2DC4672-13 equivalent, key selection criteria include saturation voltage at 1A/50mA drive, thermal resistance to leads (5.73°C/W), JEDEC-qualified reliability, complementary PNP pairing with 2DA1797, and SOT89 thermal pad layout compatibility.

Technical Context

This NPN bipolar junction transistor operates in linear or saturated switching mode, with h_FE ranging from 82 to 270 (measured at I_C = 500 mA and 1.5 A), and f_T = 180 MHz at I_C = 100 mA, V_CE = 2 V. Its safe operating area supports pulsed currents up to 6 A with defined derating above 25°C ambient.

Thermal design relies on the exposed collector pad: R_θJL = 5.73°C/W enables efficient heat transfer to PCB copper, while R_θJC = 24°C/W confirms direct case-to-heatsink capability. The device meets JEDEC high-reliability standards and is qualified per AEC-Q101 when ordered with Q-suffix variants.

Key Specifications

Pinout & Package

SOT89 package with molded green plastic housing (UL 94V-0), matte tin-plated leads, and exposed collector pad for thermal and electrical connection. Weight: 0.052 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ZTX653 and MJD122, the 2DC4672-13 delivers optimal balance of 3 A current handling, sub-350 mV saturation, and SOT89 thermal efficiency-making it preferred for space-constrained 24 V industrial and automotive load switches where thermal management is critical.

Availability

2DC4672-13 is available at Aetrix Electronics and suitable for automotive load switching, industrial solenoid control, and DC-DC converter output stages requiring stable component supply, JEDEC-qualified reliability, and RoHS-compliant green packaging.

Supply support for 2DC4672-13 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 sales operations across Asia, Europe, and North America.

The 2DC4672 belongs to Diodes' medium-power bipolar transistor product line, engineered for robust switching in automotive, industrial, and power management applications where thermal efficiency and JEDEC reliability are mandatory.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The 2DC4672-13 has an operating junction temperature range of –55°C to +150°C. For continuous DC operation, the maximum steady-state junction temperature must not exceed +150°C, enforced by thermal derating: power dissipation drops linearly from 1 W at 25°C ambient to zero at 150°C ambient on a 15 mm × 15 mm 1 oz copper PCB.

Is the 2DC4672-13 suitable for automotive applications?

Yes-the base 2DC4672-13 is JEDEC-qualified for high reliability and manufactured in IATF 16949-certified facilities. For AEC-Q101 qualification, Diodes offers automotive-grade variants with Q-suffix (e.g., 2DC4672Q-13), which undergo additional stress testing and PPAP documentation for automotive OEM use.

How does the SOT89 package affect thermal performance compared to TO-92 or SOT-23?

The SOT89's exposed collector pad provides significantly lower thermal resistance than TO-92 or SOT-23: R_θJL = 5.73°C/W versus >200°C/W for TO-92. This enables 3 A continuous current handling on standard PCBs-where TO-92 would require heatsinking and SOT-23 is limited to <500 mA.

Can the 2DC4672-13 replace the MMBT4401 in a 1 A load circuit?

Yes-with caveats. While both are NPN transistors, the 2DC4672-13 offers 3× higher I_C rating (3 A vs. 0.6 A), lower V_CE(sat) (105 mV vs. 750 mV at 150 mA), and superior thermal performance. However, its SOT89 footprint is incompatible with SOT-23 layouts, requiring PCB redesign and verification of base drive capability at 50 mA.