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Diodes Incorporated DM5W28A-13
- Part No.:
- DM5W28A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM5W28A-13.pdf
- Description:
- TVS DIODE 28VWM 45.4VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:3,931
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Product details
Overview
DM5W28A-13 from Diodes Incorporated is a surface-mount transient voltage suppressor (TVS) diode designed for automotive load dump and ISO7637-2 surge protection. It features a 28 V reverse standoff voltage (VRWM), 31.1–34.4 V breakdown voltage (VBR), 45.4 V clamping voltage (VC) at 79 A peak pulse current, and 3600 W peak pulse power dissipation (10/1000 µs). It is qualified to AEC-Q standards and housed in a DO-218 (Type E) package for high-reliability under-hood applications.
For engineers reviewing the DM5W28A-13 datasheet, DM5W28A-13 pinout, DM5W28A-13 application, or DM5W28A-13 equivalent, this TVS diode delivers verified ISO16750-2 load dump compliance, low thermal resistance (1.1 °C/W), and automotive-grade reliability-critical when selecting overvoltage protection for 12 V/24 V vehicle power networks, ECUs, and ADAS sensor interfaces.
Technical Context
This unidirectional TVS diode operates with anode-connected heatsink polarity and is optimized for fast clamping of high-energy transients-specifically 10 ms exponential load dump surges up to 3000 W at +125 °C case temperature and 10/1000 µs spikes per ISO7637-2 Pulse 1, 2a, 3a, and 3b. Its low 10 µA max reverse leakage at VRWM ensures minimal standby power loss in always-on automotive modules.
The device's junction-to-case thermal resistance of 1.1 °C/W enables effective heat transfer to PCB copper or external heatsinks, supporting sustained operation across –55 °C to +175 °C ambient and junction temperatures. Its DO-218 package provides robust mechanical stability and UL 94V-0 flammability rating for under-hood mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 28 V - Maximum continuous reverse operating voltage before clamping begins; matches nominal 24 V automotive systems with margin. |
| VBR @ IT=5 mA | 31.1–34.4 V - Breakdown threshold range; ensures reliable turn-on before downstream IC damage during surge events. |
| VC @ IPP=79 A | 45.4 V - Clamped voltage during 10/1000 µs surge; limits stress on protected 36 V-rated components like CAN transceivers. |
| PPK (10/1000 µs) | 3600 W - Peak pulse power handling; supports single-event load dump energy without failure per ISO16750-2 Annex A. |
| RθJC | 1.1 °C/W - Junction-to-case thermal resistance; enables direct thermal coupling to heatsink or thick copper pour for thermal management. |
| TJ Range | –55 °C to +175 °C - Full automotive junction temperature range; validated for engine control units and transmission control modules. |
| IFSM | 500 A - Non-repetitive forward surge current capability; withstands short-circuit fault currents in power distribution circuits. |
Pinout & Package
Package: DO-218 (Type E), surface-mount, molded plastic with UL 94V-0 rating; heatsink tab is electrically connected to the anode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive surge current path / thermal interface | Electrically active anode terminal; must be soldered to large copper area or external heatsink for thermal and electrical performance. |
| Cathode (Top Lead) | Surge return path / clamping node | Connected to protected line (e.g., battery rail); clamps voltage by shunting surge current to anode/heatsink ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| 3600 W peak pulse power (10/1000 µs) | Enables single-event protection against worst-case ISO16750-2 load dump surges without degradation or thermal runaway. |
| Low RθJC = 1.1 °C/W | Reduces junction temperature rise by >40% vs. comparable SMC-packaged TVS devices, extending lifetime in high-ambient environments. |
| AEC-Q qualified reliability | Validated per JEDEC standards for automotive use-ensures long-term stability in vibration-prone, thermally cycling under-hood locations. |
| RoHS-compliant, halogen-free "Green" construction | Meets EU RoHS 3 and automotive material restrictions; eliminates brominated flame retardants and antimony compounds (<900 ppm Br/Cl, <1000 ppm Sb). |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects microcontroller, CAN transceiver, and analog sensor supply rails from alternator load dump surges during battery disconnect events. IC Role / Device Role: Unidirectional TVS clamp placed between battery feed and local DC/DC input, referenced to chassis ground via heatsink. Use Value: Limits clamped voltage to 45.4 V, staying below absolute maximum ratings of 36 V-input PMICs and 40 V-rated CAN FD transceivers. |
Use Scenario: Shields BCM power domain from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling) transients on 12 V supply lines. IC Role / Device Role: Primary surge suppression device mounted directly at connector entry point, with anode tied to chassis ground plane. Use Value: Delivers 79 A peak current handling at 45.4 V clamping, preventing latch-up or gate oxide damage in 5 V LDO regulators and LIN transceivers. |
| ADAS Camera Power Interface | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Safeguards image sensor and serializer ICs in front-facing cameras exposed to repeated load dump pulses during vehicle start-stop cycles. IC Role / Device Role: Secondary-level TVS on 12 V camera module input, downstream of primary fuse and upstream of buck converter. Use Value: Maintains <10 µA leakage at 28 V VRWM, avoiding quiescent current increase that would compromise parking-mode battery drain budgets. |
Use Scenario: Protects H-bridge gate drivers and current sense amplifiers in EPS motor control units subjected to high-current switching noise and battery reversal transients. IC Role / Device Role: High-power TVS on main 12 V/24 V motor supply rail, leveraging DO-218 heatsink tab for direct thermal coupling to metal enclosure. Use Value: Withstands 500 A IFSM surge, enabling robustness against motor stall faults and contactor bounce-induced voltage spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A | Lower PPK (400 W), SMA package, RθJC ≈ 50 °C/W, no AEC-Q qualification | Suitable only for non-automotive, low-energy board-level ESD; cannot meet ISO16750-2 load dump requirements | Select only for cost-sensitive consumer electronics where full automotive surge immunity is not required. |
| SMCJ28A-Q | Same 3600 W PPK and AEC-Q200 qualification, but SMC package (RθJC = 2.5 °C/W), larger footprint, lower thermal efficiency | Acceptable for less thermally constrained automotive modules; requires larger PCB area and more copper for equivalent thermal performance | Choose if DO-218 layout is incompatible, but expect ~2.3× higher junction temperature rise under identical load dump conditions. |
Compared with SMAJ28A and SMCJ28A-Q, DM5W28A-13 delivers superior thermal performance (1.1 °C/W vs. ≥2.5 °C/W), smaller DO-218 footprint, and verified ISO16750-2 compliance-making it the optimal choice for space-constrained, high-temperature automotive power rail protection.
Availability
DM5W28A-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering modules requiring stable component supply and automotive-grade surge resilience.
Supply support for DM5W28A-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, specializing in high-reliability protection, power management, and signal integrity solutions for automotive, industrial, and computing markets.
DM5W28A-13 belongs to Diodes' automotive-qualified TVS diode family engineered specifically for ISO7637-2 and ISO16750-2 compliance in 12 V/24 V vehicle electrical systems-prioritizing thermal robustness, surge endurance, and long-term reliability under harsh environmental stress.
FAQ
What is the polarity configuration of DM5W28A-13?
DM5W28A-13 is a unidirectional TVS diode with anode connected to the heatsink tab and cathode on the top lead. The bar marking on the package denotes the cathode. This configuration allows it to clamp positive-going transients on lines referenced to chassis ground, making it ideal for battery rail protection in automotive systems.
Can DM5W28A-13 be used in 12 V and 24 V systems?
Yes-its 28 V VRWM provides appropriate margin for both nominal 12 V (13.5 V typical) and 24 V (27–28 V typical) automotive battery systems. The 31.1–34.4 V VBR range ensures reliable clamping onset before damaging overvoltage reaches downstream components in either architecture.
How does the DO-218 package improve thermal performance over SMC or SMA packages?
The DO-218 (Type E) package integrates a large metal heatsink tab directly bonded to the silicon die anode, achieving RθJC = 1.1 °C/W-nearly half that of SMC-packaged equivalents. This allows faster heat transfer to PCB copper or external heatsinks, reducing steady-state junction temperature and improving surge survivability in high-ambient environments.
Is DM5W28A-13 compliant with RoHS and automotive environmental standards?
Yes-DM5W28A-13 is RoHS 3 compliant (2015/863/EU), halogen- and antimony-free ("Green"), and qualified to AEC-Q200 standards. It meets ISO 10605 (ESD), ISO 7637-2 (surge), and ISO 16750-2 (load dump), with moisture sensitivity level 1 per J-STD-020 and UL 94V-0 flammability rating.
DM5W28A-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-218AB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 79A
- Power - Peak Pulse:
- 3600W (3.6kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218
DM5W28A-13 FAQ
1.How can I place an order for DM5W28A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM5W28A-13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DM5W28A-13 reliable?
The price and inventory of DM5W28A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM5W28A-13 is usually 5 days.
3.What payment methods are accepted for DM5W28A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM5W28A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM5W28A-13?
DM5W28A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM5W28A-13 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DM5W28A-13?
For technical support, including DM5W28A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM5W28A-13 requirements.
6.How does Aetrix verify that DM5W28A-13 is sourced from the original manufacturer or authorized distributors?
All DM5W28A-13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DM5W28A-13 meets industry standards.
7.What is the process for return or replacement of DM5W28A-13?
All DM5W28A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM5W28A-13, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DM5W28A-13 part is unused and in its original packaging.
Return procedure for DM5W28A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM5W28A-13 Tags
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