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Diodes Incorporated DM6W12A-13
- Part No.:
- DM6W12A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM6W12A-13.pdf
- Description:
- TVS DIODE 12VWM 19.9VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:8,419
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Product details
Overview
DM6W12A-13 from Diodes Incorporated is a surface-mount transient voltage suppressor (TVS) diode designed for automotive load dump and ISO7637-2 surge protection in 12V battery systems. It features a 12V reverse standoff voltage (VRWM), 19.9V max clamping voltage (VC) at 231A peak pulse current, and 4600W peak pulse power dissipation (10/1000µs waveform). Its DO-218 package delivers low thermal resistance (RθJC = 1.0°C/W) for high-reliability underhood applications.
For engineers reviewing the DM6W12A-13 datasheet, DM6W12A-13 pinout, DM6W12A-13 application, or DM6W12A-13 equivalent, this part is selected for robust overvoltage protection in automotive power electronics where high IFSM (600A), low leakage (<10µA @ VRWM), and AEC-Q-compliant reliability are required - especially in alternator-regulated 12V circuits exposed to ISO16750-2 load dump events.
Technical Context
This unidirectional TVS diode operates with anode-connected heatsink polarity and is optimized for fast response to high-energy transients. Its breakdown voltage (VBR = 13.3–14.7V @ IT = 5mA) ensures precise triggering above nominal 12V rail voltage while maintaining low leakage (<10µA @ 12V, TJ = +175°C).
The device sustains 6W steady-state power at TC = +25°C and derates linearly above that temperature, supported by its 1.0°C/W junction-to-case thermal resistance. Its 10/1000µs clamping performance (VC = 19.9V @ IPP = 231A) meets stringent automotive surge immunity requirements without sacrificing system-level efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12 V - Maximum continuous reverse operating voltage before clamping begins; matches 12V automotive battery nominal range. |
| VBR (min/max) | 13.3 / 14.7 V @ 5 mA - Ensures reliable turn-on above system overvoltage threshold while avoiding false triggering during normal operation. |
| VC @ IPP | 19.9 V @ 231 A (10/1000µs) - Limits downstream voltage stress during worst-case load dump, protecting downstream MOSFETs and controllers. |
| PPK | 4600 W - Sustains high-energy ISO16750-2 load dump surges without failure, enabling single-device protection without parallel staging. |
| RθJC | 1.0 °C/W - Enables efficient heat transfer to PCB copper or heatsink, critical for sustained operation at elevated ambient temperatures up to +175°C. |
| IFSM | 600 A @ 8.3 ms - Withstands repetitive surge currents typical of alternator fault conditions without bond wire fusing. |
| TJ Range | −55 to +175 °C - Qualified for underhood placement in passenger and commercial vehicles per AEC-Q standards. |
Pinout & Package
Package: DO-218 (Type E), surface-mount molded plastic case with matte tin-plated terminals; heatsink side is anode (marked with bar); cathode is opposite terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Side) | Positive connection point; electrically tied to metal slug | Provides low-inductance, high-current path and primary thermal conduction path to PCB copper pour or heatsink. |
| Cathode (Marked Terminal) | Transient current return path during clamping | Connected to protected circuit ground or low-side reference; must be routed with minimal loop inductance for effective surge suppression. |
Key Features
| Feature | Design Value |
|---|---|
| 4600W Peak Pulse Power | Enables single-device compliance with ISO16750-2 Load Dump (12V system) without external series impedance or staged protection. |
| Low Clamping Voltage (19.9V) | Keeps protected IC supply rails within safe operating limits during 231A surge, reducing need for oversized input capacitors or secondary regulation. |
| 1.0°C/W Thermal Resistance | Allows direct mounting on large copper areas for passive cooling - eliminates need for discrete heatsinks in most automotive ECU designs. |
| AEC-Q Qualified Reliability | Validated for automotive-grade lifetime performance including high-temperature storage, temperature cycling, and humidity testing per JEDEC standards. |
| RoHS & Halogen-Free | Meets EU RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb), supporting global vehicle emissions and recycling mandates. |
Applications
| Automotive Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Protection of 12V input rail against alternator load dump surges during battery disconnection events. IC Role / Device Role: Primary unidirectional TVS clamp placed upstream of DC-DC converters and microcontroller power supplies. Use Value: Limits transient voltage to ≤19.9V at 231A, preventing latch-up or gate oxide damage in downstream 3.3V/5V regulators and MCU power domains. |
Use Scenario: Surge suppression on LIN bus power lines and interior lighting driver inputs exposed to ISO7637-2 Pulse 1 and Pulse 2a. IC Role / Device Role: High-power front-end TVS for centralized 12V distribution nodes feeding multiple low-voltage subsystems. Use Value: Absorbs 4600W pulses without degradation, maintaining signal integrity and eliminating need for redundant TVS devices in multi-load architectures. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Electric Power Steering (EPS) Control Unit |
Use Scenario: Input protection for image sensor power supply in rear-view or surround-view cameras mounted near engine bay. IC Role / Device Role: High-temperature-stable TVS ensuring uninterrupted operation at TJ = +175°C during prolonged engine runtime. Use Value: Maintains <10µA leakage at 12V and +175°C, preventing quiescent current drift and false wake-up in always-on camera power domains. |
Use Scenario: Protection of motor driver H-bridge supply inputs against inductive kickback and battery reversal transients. IC Role / Device Role: Bidirectional-capable unidirectional TVS used with external reverse-blocking diode for full-polarity surge coverage. Use Value: Delivers 600A non-repetitive surge rating (IFSM), surviving repeated EPS motor stall events without parameter shift or catastrophic failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Lower PPK (400W), DO-214AC package, RθJC ≈ 50°C/W | Not suitable for ISO16750-2 load dump; limited to lower-energy ISO7637-2 Pulse 1/2a only | Select when cost sensitivity outweighs surge energy requirement and thermal constraints allow higher junction temperature rise. |
| SMCJ12A | PPK = 1500W, DO-214AB package, RθJC ≈ 10°C/W, same VRWM | Meets ISO7637-2 but fails ISO16750-2 load dump due to insufficient clamping energy handling | Choose for space-constrained boards needing higher surge margin than SMAJ but not full 4600W capability; requires larger thermal pad than DM6W12A-13. |
Compared with SMAJ12A and SMCJ12A, DM6W12A-13 uniquely supports full ISO16750-2 load dump immunity in a thermally optimized DO-218 package - delivering 3× the peak power of SMCJ12A and >11× that of SMAJ12A while maintaining identical 12V standoff and superior thermal performance.
Availability
DM6W12A-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 extended production lifecycles.
Supply support for DM6W12A-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.
This device belongs to Diodes' automotive-qualified TVS portfolio, engineered specifically for ISO16750-2 and ISO7637-2 compliance in 12V/24V vehicle electrical systems - emphasizing thermal robustness, surge endurance, and long-term parametric stability.
FAQ
What is the maximum clamping voltage of DM6W12A-13 at rated peak current?
The maximum clamping voltage (VC) is 19.9 V at a peak pulse current (IPP) of 231 A under the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and reflects worst-case device behavior during surge events, ensuring downstream components remain within safe voltage limits.
Is DM6W12A-13 qualified for automotive use?
Yes - DM6W12A-13 is manufactured and tested to meet AEC-Q200 stress test requirements for passive components and qualifies as an automotive-grade TVS diode. It is explicitly designed for ISO16750-2 load dump and ISO7637-2 surge immunity in 12V systems, with full qualification documentation available from Diodes Incorporated.
How does the DO-218 package improve thermal performance over standard SMC packages?
The DO-218 (Type E) package uses an integrated metal slug heatsink as the anode terminal, providing direct thermal conduction from the silicon die to the PCB. Its 1.0°C/W junction-to-case thermal resistance is ~10× better than typical DO-214AB (SMCJ) packages, enabling higher sustained power dissipation without active cooling or thermal derating penalties.
Can DM6W12A-13 be used in 24V systems?
No - DM6W12A-13 is specified for 12V nominal systems only. Its 12V VRWM and 19.9V clamping voltage are optimized for 12V battery architecture. For 24V systems, Diodes offers the DM6W24A-13 variant (VRWM = 24V, VC = 38.9V @ 118A), which shares identical DO-218 packaging and thermal characteristics.
DM6W12A-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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 231A
- Power - Peak Pulse:
- 4600W (4.6kW)
- 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
DM6W12A-13 FAQ
1.How can I place an order for DM6W12A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM6W12A-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 DM6W12A-13 reliable?
The price and inventory of DM6W12A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM6W12A-13 is usually 5 days.
3.What payment methods are accepted for DM6W12A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM6W12A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM6W12A-13?
DM6W12A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM6W12A-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 DM6W12A-13?
For technical support, including DM6W12A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM6W12A-13 requirements.
6.How does Aetrix verify that DM6W12A-13 is sourced from the original manufacturer or authorized distributors?
All DM6W12A-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 DM6W12A-13 meets industry standards.
7.What is the process for return or replacement of DM6W12A-13?
All DM6W12A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM6W12A-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 DM6W12A-13 part is unused and in its original packaging.
Return procedure for DM6W12A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM6W12A-13 Tags
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