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Diodes Incorporated DM6W20A-13
- Part No.:
- DM6W20A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM6W20A-13.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:9,868
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Product details
Overview
DM6W20A-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/24V systems. It delivers 4600W peak pulse power (10/1000µs), has a 20V reverse standoff voltage (VRWM), clamps at ≤32.4V under 142A peak current, and operates from –55°C to +175°C. Its DO-218 package enables high-power dissipation with low thermal resistance (RθJC = 1.0°C/W) in engine control units and body electronics.
For engineers reviewing the DM6W20A-13 datasheet, DM6W20A-13 pinout, DM6W20A-13 application, or DM6W20A-13 equivalent, this page provides verified electrical parameters, ISO-compliant surge capability, thermal derating behavior, polarity identification, and direct-fit alternatives for automotive-grade circuit protection design.
Technical Context
This unidirectional TVS diode functions as a clamping device across power rails to divert high-energy transients-such as ISO16750-2 load dump (up to 100V, 10ms exponential) and ISO7637-2 Pulse 1/2a/3a/3b-away from downstream ICs. Its low clamping voltage (VC = 32.4V @ IPP = 142A) ensures robust overvoltage limiting while maintaining system-level compliance.
It features a junction-to-case thermal resistance of 1.0°C/W and supports continuous power dissipation up to 6W at TC = +25°C, with linear derating above that temperature. The anode-connected heatsink configuration (per DO-218 mechanical drawing) enables efficient thermal management in high-reliability automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 4600W (10/1000µs waveform); sustains single-event surges without failure in automotive load dump scenarios |
| Reverse Standoff Voltage | 20V (VRWM); blocks normal operating voltage while remaining inactive until transient exceeds threshold |
| Clamping Voltage | ≤32.4V @ 142A (IPP); limits downstream voltage stress during worst-case surge events |
| Junction-to-Case Thermal Resistance | 1.0°C/W; enables effective heat transfer to PCB copper or heatsink for sustained reliability |
| Operating Temperature Range | –55°C to +175°C; qualified for under-hood environments including engine control and transmission modules |
| Surge Standards Compliance | ISO16750-2 (load dump), ISO7637-2 (Pulse 1, 2a, 3a, 3b); validated for automotive ECU front-end protection |
| Leakage Current | ≤10µA @ VRWM = 20V; minimizes standby power loss in always-on vehicle subsystems |
Pinout & Package
Package: DO-218 (Type E), surface-mount molded plastic case with UL 94V-0 flammability rating, matte tin-plated terminals, and polarity indicated by bar (cathode) and circle (anode) markings. Heatsink tab is electrically connected to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive terminal / thermal path | Connected to system ground or low-impedance return; serves dual role as current path and primary heat sink interface |
| Cathode (Bar-marked lead) | Negative terminal / clamping node | Connected to protected line (e.g., battery rail); conducts surge current to anode when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| High peak pulse power handling | 4600W capability enables single-device protection against severe load dump events without cascaded TVS stages |
| Low thermal resistance | RθJC = 1.0°C/W allows direct mounting to large copper areas for reliable operation at elevated ambient temperatures |
| Automotive qualification | AEC-Q200-compliant construction ensures long-term stability in vibration-prone, thermally aggressive under-hood locations |
| Green and RoHS-compliant materials | Halogen- and antimony-free formulation (<900ppm Br/Cl, <1000ppm Sb) meets global environmental and safety requirements |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Protects microcontroller power inputs and CAN transceiver supply rails from alternator load dump spikes during battery disconnection. IC Role / Device Role: Primary clamping element on 12V main rail, placed upstream of DC-DC converters and LDOs. Use Value: Clamps to ≤32.4V within nanoseconds, preventing latch-up or permanent damage to 3.3V/5V logic supplies rated for ≤40V absolute maximum. |
Use Scenario: Shields LIN bus transceivers and door module MCUs from ISO7637-2 Pulse 1 (inductive kickback) and Pulse 3b (capacitive discharge). IC Role / Device Role: Unidirectional TVS on 12V auxiliary supply feeding interior lighting and sensor interfaces. Use Value: 142A peak current capacity handles repetitive transients without degradation, supporting 15-year vehicle lifecycle. |
| Transmission Control Module (TCM) | Advanced Driver Assistance Systems (ADAS) Power Supply |
Use Scenario: Guards solenoid driver ICs and position sensor analog front-ends against voltage reversals and load dump in automatic transmission assemblies. IC Role / Device Role: High-energy transient shunt on switched 12V output stage, co-located with MOSFET gate drivers. Use Value: Low leakage (≤10µA) avoids signal offset errors in precision current-sense amplifiers used for gear actuation monitoring. |
Use Scenario: Safeguards radar and camera module DC-DC controllers from coupled surges induced by nearby high-current actuators (e.g., electric power steering). IC Role / Device Role: Secondary protection stage after input filter, ensuring clean 5V/3.3V rails remain within safe operating area. Use Value: 175°C max junction temperature enables placement near heat-generating SoCs without thermal shutdown risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Lower peak power (400W), DO-214AC package, RθJC ≈ 50°C/W | Suitable only for non-load-dump applications (e.g., ESD, data line protection) | Select when cost sensitivity outweighs surge energy requirements and thermal constraints allow higher junction rise |
| SMCJ20A | Same DO-214AB package as SMAJ but rated for 1500W; lacks AEC-Q200 qualification and ISO16750-2 validation | Acceptable for industrial power supplies but not certified for automotive OEM use | Choose for non-automotive designs where full ISO compliance is not mandated and 1500W suffices |
Compared with SMAJ20A and SMCJ20A, DM6W20A-13 uniquely combines 4600W surge capacity, AEC-Q200 qualification, and ISO16750-2/ISO7637-2 certification-making it the only option for production automotive ECUs requiring validated load dump immunity.
Availability
DM6W20A-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, transmission control systems, and ADAS power supplies requiring stable component supply across multi-year automotive production programs.
Supply support for DM6W20A-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 integrated circuits, specializing in high-reliability components for automotive, industrial, and computing markets.
The DM6WxxA series belongs to Diodes' automotive-grade TVS portfolio, engineered specifically to meet stringent ISO16750-2 load dump and ISO7637-2 transient immunity requirements in harsh-temperature vehicle electronics.
FAQ
What is the maximum clamping voltage of DM6W20A-13 under full-rated surge current?
The DM6W20A-13 clamps to a maximum of 32.4V when subjected to its rated peak pulse current of 142A (10/1000µs waveform), as specified in the Electrical Characteristics table of DS40427 Rev. 6-2. This value is measured at TA = +25°C and defines the upper voltage limit imposed on protected circuitry during worst-case transients.
Is DM6W20A-13 qualified for automotive applications per AEC-Q200?
Yes-DM6W20A-13 is explicitly qualified to AEC-Q200 standards for high-reliability automotive use, as confirmed in the "Mechanical Data" section of DS40427. It meets JEDEC-defined stress test requirements for temperature cycling, humidity bias, and mechanical shock, enabling deployment in under-hood ECUs and safety-critical modules.
How does the DO-218 package improve thermal performance compared to DO-214AB?
The DO-218 (Type E) package features a large metal heatsink tab directly bonded to the anode, achieving RθJC = 1.0°C/W-over 40× better than typical DO-214AB devices (~45°C/W). This allows DM6W20A-13 to dissipate 4600W surges without exceeding 175°C junction temperature when mounted on ≥250mm² 2oz copper.
Can DM6W20A-13 be used in bidirectional configurations?
No-DM6W20A-13 is a unidirectional TVS diode with anode-heatsink polarity. Its electrical characteristics (e.g., breakdown voltage, clamping curve) are defined only for forward-biased surge conduction from cathode to anode. For bidirectional protection, Diodes offers the complementary DM6W20CA-13 variant with symmetrical clamping in both polarities.
DM6W20A-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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 142A
- 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
DM6W20A-13 FAQ
1.How can I place an order for DM6W20A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM6W20A-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 DM6W20A-13 reliable?
The price and inventory of DM6W20A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM6W20A-13 is usually 5 days.
3.What payment methods are accepted for DM6W20A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM6W20A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM6W20A-13?
DM6W20A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM6W20A-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 DM6W20A-13?
For technical support, including DM6W20A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM6W20A-13 requirements.
6.How does Aetrix verify that DM6W20A-13 is sourced from the original manufacturer or authorized distributors?
All DM6W20A-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 DM6W20A-13 meets industry standards.
7.What is the process for return or replacement of DM6W20A-13?
All DM6W20A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM6W20A-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 DM6W20A-13 part is unused and in its original packaging.
Return procedure for DM6W20A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM6W20A-13 Tags
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