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Diodes Incorporated DM5W12AQ-13
- Part No.:
- DM5W12AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
DM5W12AQ-13.pdf
- Description:
- TVS DO-218
- Quantity:
- Payment:
- Shipping:
Inventory:9,967
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Product details
Overview
DM5W12AQ-13 from Diodes Incorporated is a 3600W surface-mount transient voltage suppressor (TVS) diode in DO-218 (Type E) package, designed for automotive power line protection. It features a 12V reverse standoff voltage (VRWM), 13.3–14.7V breakdown voltage (VBR), 19.9V clamping voltage (VC) at 181A peak pulse current, and AEC-Q101 qualification for under-hood applications including engine control units and body electronics.
For engineers reviewing the DM5W12AQ-13 datasheet, DM5W12AQ-13 pinout, DM5W12AQ-13 application, or DM5W12AQ-13 equivalent, key selection criteria include ISO 16750-2 load dump compliance, 1.1°C/W junction-to-case thermal resistance, 175°C maximum operating temperature, and heatsink-anode polarity configuration for high-power surge dissipation.
Technical Context
This unidirectional TVS diode operates as a clamping device in parallel with sensitive automotive electronics, activating when transient voltage exceeds its 12V standoff threshold. Its low 1.1°C/W RθJC enables efficient heat transfer to the PCB copper pour or external heatsink during 3600W 10/1000µs surges.
The device meets ISO 7637-2 Pulse 1, 2a, 3a, 3b and ISO 16750-2 Pulse A/B requirements, with <10µA reverse leakage at VRWM and stable performance up to +175°C junction temperature-critical for under-hood environments where ambient temperatures exceed 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=5mA | 13.3–14.7 V - Breakdown voltage range ensuring reliable turn-on margin above VRWM |
| VC @ IPP=181A | 19.9 V - Clamped voltage during 3600W surge, limiting downstream IC stress |
| PPK (10/1000µs) | 3600 W - Peak pulse power handling capability for ISO 16750-2 load dump events |
| RθJC | 1.1 °C/W - Thermal resistance enabling effective heat conduction to PCB/heatsink |
| TJ Operating Range | −55 to +175 °C - Full automotive temperature coverage without derating |
| IFSM (8.3ms) | 500 A - Surge current rating for short-duration battery reversal or jump-start events |
Pinout & Package
Package: DO-218 (Type E), surface-mount molded plastic case with UL 94V-0 flammability rating; heatsink tab is electrically connected to anode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive input / Power rail connection | Primary thermal path and electrical connection to protected supply line; must be soldered to large copper area |
| Cathode (Lead) | Clamping output / Ground reference | Connected to system ground or low-impedance return path; carries full surge current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| 3600W peak pulse power | Supports full ISO 16750-2 load dump protection without external series impedance |
| AEC-Q101 qualification | Validated reliability for automotive safety-critical systems requiring PPAP documentation |
| Low 1.1°C/W RθJC | Enables >80% of rated power dissipation at TC = +125°C with standard PCB layout |
| Heatsink-is-anode polarity | Simplifies thermal design by integrating electrical and thermal interface into single mounting surface |
| RoHS 3 & Halogen-free | Complies with automotive ELV directive and end-of-life recycling requirements |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) CAN Bus Supply |
|---|---|
Use Scenario: Protects 12V power rail feeding microcontroller, sensors, and drivers against alternator load dump transients up to 35V. IC Role / Device Role: Unidirectional clamping TVS placed directly at ECU input connector. Use Value: Limits clamped voltage to 19.9V, preventing damage to 24V-rated LDOs and MCU I/O while sustaining 3600W surge energy. | Use Scenario: Shields 12V supply to CAN transceivers and LIN controllers from ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling). IC Role / Device Role: Primary overvoltage clamp on BCM main power bus upstream of DC-DC converters. Use Value: Maintains <10µA leakage at 12V, avoiding quiescent current penalty in always-on modules while clamping to 19.9V within 1ns response time. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Safeguards 12V input to image sensor SoCs and ISP processors exposed to battery transients during cold cranking and jump starts. IC Role / Device Role: First-line TVS on camera module PCB, mounted adjacent to power entry point. Use Value: Withstands 500A IFSM (8.3ms), surviving repeated jump-start events without degradation-critical for warranty-limited ADAS hardware. | Use Scenario: Protects H-bridge gate drivers and current sense amplifiers from inductive kickback during EPS motor commutation and fault shutdown. IC Role / Device Role: High-energy TVS across motor driver supply rails, thermally coupled to aluminum heatsink. Use Value: 1.1°C/W RθJC allows direct mounting to EPS housing, dissipating 3600W surges without thermal runaway at TJ = +175°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Lower PPK (400W), SMA package, RθJC ≈ 50°C/W | Suitable only for low-energy ISO 7637-2 Pulse 3a/b; not rated for load dump | Select when cost sensitivity outweighs surge energy requirement and thermal constraints permit larger footprint |
| SMCJ12A | PPK = 1500W, SMC package, RθJC ≈ 2.5°C/W, same VRWM/VBR | Meets ISO 7637-2 but fails ISO 16750-2 load dump due to lower energy rating | Choose for space-constrained designs needing higher surge rating than SMAJ but insufficient for full load dump duty cycle |
Compared with SMAJ12A and SMCJ12A, DM5W12AQ-13 delivers 2.4× and 2.4× higher peak power respectively, with 2.3× and 2.3× lower thermal resistance-enabling compact, high-reliability protection in AEC-Q101-compliant automotive modules where sustained surge energy and thermal management are critical.
Availability
DM5W12AQ-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera power supplies, and electric power steering systems requiring stable component supply across automotive production lifecycles.
Supply support for DM5W12AQ-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 components for automotive, industrial, and computing markets.
The DM5WxxAQ series belongs to Diodes' AEC-Q101-qualified automotive TVS portfolio, engineered specifically to meet ISO 16750-2 load dump and ISO 7637-2 surge immunity requirements in harsh under-hood environments.
FAQ
What is the maximum clamping voltage of DM5W12AQ-13 at its rated peak pulse current?
The DM5W12AQ-13 clamps to a maximum of 19.9V at 181A peak pulse current (10/1000µs waveform), as specified in the Electrical Characteristics table. This value ensures downstream 24V-rated regulators and microcontrollers remain within safe operating voltage limits during ISO 16750-2 load dump events.
How does the DO-218 package's heatsink-anode configuration impact PCB layout?
The anode is internally connected to the metal heatsink tab, requiring direct soldering to a large copper pour or thermal pad on the PCB. This configuration provides both electrical connection and primary thermal path-layout must allocate ≥200 mm² of 2-oz copper with ≥4 thermal vias to internal ground planes to maintain RθJA < 25°C/W.
Is DM5W12AQ-13 compliant with RoHS 3 and halogen-free standards?
Yes. DM5W12AQ-13 carries RoHS 3 (2015/863/EU) compliance with all applicable exemptions applied, and is certified "Green" per Diodes' definition: <900ppm bromine, <900ppm chlorine (<1500ppm total Br+Cl), and <1000ppm antimony compounds-verified in DS41000 Rev. 7-2.
Can DM5W12AQ-13 replace SMAJ12A in existing designs without layout changes?
No. The DO-218 (Type E) package is physically larger than SMA and requires different pad geometry, thermal via placement, and copper area. Direct replacement would compromise thermal performance and surge handling; redesign of the footprint and thermal relief is mandatory to achieve rated 3600W capability.
DM5W12AQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- -
- Unidirectional Channels:
- -
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- -
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- -
- Supplier Device Package:
- -
DM5W12AQ-13 FAQ
1.How can I place an order for DM5W12AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM5W12AQ-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 DM5W12AQ-13 reliable?
The price and inventory of DM5W12AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM5W12AQ-13 is usually 5 days.
3.What payment methods are accepted for DM5W12AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM5W12AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM5W12AQ-13?
DM5W12AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM5W12AQ-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 DM5W12AQ-13?
For technical support, including DM5W12AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM5W12AQ-13 requirements.
6.How does Aetrix verify that DM5W12AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM5W12AQ-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 DM5W12AQ-13 meets industry standards.
7.What is the process for return or replacement of DM5W12AQ-13?
All DM5W12AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM5W12AQ-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 DM5W12AQ-13 part is unused and in its original packaging.
Return procedure for DM5W12AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM5W12AQ-13 Tags
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