Diodes Incorporated DM5W13A-13

Overview

DM5W13A-13 from Diodes Incorporated is a surface-mount transient voltage suppressor (TVS) diode designed for automotive power-line surge protection. It delivers 3600W peak pulse power at 10/1000µs, features a 13V reverse standoff voltage (VRWM), clamps transients to ≤21.5V at 167A IPP, and operates from –55°C to +175°C. It is qualified per AEC-Q standards and meets ISO7637-2 Pulse 1/2a/3a/3b and ISO16750-2 load dump requirements in engine control units and body electronics.

For engineers reviewing the DM5W13A-13 datasheet, DM5W13A-13 pinout, DM5W13A-13 application, or DM5W13A-13 equivalent, this page provides verified electrical parameters, DO-218 package layout, thermal resistance (RθJC = 1.1°C/W), automotive compliance status, and direct replacement guidance - all grounded in Diodes' DS40426 Rev. 6-2 (Jan 2025).

Technical Context

This unidirectional TVS diode uses an avalanche breakdown structure optimized for high-energy automotive transients. Its low clamping voltage (21.5V @ 167A) ensures downstream ICs remain below safe operating thresholds during ISO16750-2 load dump events up to 35V, while its 1.1°C/W junction-to-case thermal resistance enables reliable power dissipation at elevated ambient temperatures.

The device integrates a heatsink-anode polarity configuration in DO-218 (Type E) packaging, enabling efficient heat transfer to PCB copper planes. With <10µA reverse leakage at VRWM and stable performance up to +175°C junction temperature, it supports long-term reliability in under-hood applications without derating penalties.

Key Specifications

Pinout & Package

Package: DO-218 (Type E), surface-mount, molded plastic housing with UL 94V-0 flammability rating. Anode terminal connected to heatsink tab; cathode marked by bar on top surface.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Compared with SMAJ13A and SMCJ13A, DM5W13A-13 uniquely combines 3600W surge capacity, 1.1°C/W thermal resistance, and AEC-Q200 qualification in a compact DO-218 package - making it the only choice for space-constrained, thermally demanding engine bay applications requiring ISO16750-2 compliance.

Availability

DM5W13A-13 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera power supplies, and electric power steering systems requiring stable component supply across multi-year production cycles.

Supply support for DM5W13A-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 centers across Asia and manufacturing in Taiwan and China.

DM5W13A-13 belongs to Diodes' automotive-grade TVS diode family engineered specifically for ISO7637-2 and ISO16750-2 compliance in harsh-environment vehicle subsystems - emphasizing thermal robustness, surge repeatability, and long-term reliability.

FAQ

What is the maximum clamping voltage of DM5W13A-13 at rated peak pulse current?

The DM5W13A-13 clamps to ≤21.5V at its rated peak pulse current of 167A (10/1000µs waveform), as specified in Diodes' DS40426 Rev. 6-2 Table 1. This value is measured under standardized surge conditions and guarantees protection for 24V-rated downstream components such as CAN FD transceivers and automotive MCUs.

Is DM5W13A-13 suitable for bidirectional surge protection?

No - DM5W13A-13 is a unidirectional TVS diode, configured with anode tied to the heatsink tab and cathode marked on the top surface. It protects against positive-going transients only. For bidirectional protection (e.g., data lines), Diodes offers the DM5W13CA series, which uses a center-tap DO-218 package with symmetrical breakdown.

How does the DO-218 package improve thermal performance over DO-214AB?

The DO-218 (Type E) package features a large metal heatsink tab directly bonded to the silicon die, achieving RθJC = 1.1°C/W - nearly half the thermal resistance of DO-214AB (≈2.5°C/W). This allows sustained 5W power dissipation with <6°C temperature rise above PCB, critical for under-hood applications where ambient exceeds 125°C.

Does DM5W13A-13 meet RoHS 3 and halogen-free requirements?

Yes - DM5W13A-13 carries Diodes' "Green" designation: it complies with EU RoHS 3 (2015/863/EU), contains <900ppm bromine, <900ppm chlorine (<1500ppm total Br+Cl), and <1000ppm antimony, and uses matte tin lead-free plating per MIL-STD-202 Method 208.