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Diodes Incorporated DM6W20AQ-13
- Part No.:
- DM6W20AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM6W20AQ-13.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:5,851
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Product details
Overview
DM6W20AQ-13 from Diodes Incorporated is a DO-218 (Type E) surface-mount transient voltage suppressor (TVS) diode designed for automotive load-dump and ISO 7637-2 surge protection. It features a 20 V reverse standoff voltage (VRWM), 32.4 V max clamping voltage (VC) at 142 A peak pulse current, 4600 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the DM6W20AQ-13 datasheet, DM6W20AQ-13 pinout, DM6W20AQ-13 application, or DM6W20AQ-13 equivalent, this device serves as a high-power, low-leakage, thermally robust TVS for 12 V automotive power rail protection where ISO16750-2 Pulse 5a compliance and junction-to-case thermal resistance of 1.0 °C/W are critical selection criteria.
Technical Context
This unidirectional TVS diode operates with anode-connected heatsink polarity and is optimized for transient suppression in automotive battery line applications. Its 22.2–24.5 V breakdown voltage (VBR @ 5 mA) ensures reliable triggering before downstream component damage, while its 1.0 °C/W RθJC enables effective heat dissipation during 10 ms exponential load-dump events.
The device sustains 600 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and maintains ≤10 µA reverse leakage at VRWM up to +175 °C junction temperature. Its low 175 °C maximum operating temperature and DO-218 package geometry support placement near high-thermal-stress points in engine control units and body control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 20 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system overvoltage threshold for 12 V nominal automotive rails. |
| VBR min/max | 22.2 V / 24.5 V @ 5 mA - Confirmed breakdown range ensures predictable turn-on without premature conduction during normal transients. |
| VC @ IPP | 32.4 V @ 142 A (10/1000 µs) - Clamping voltage limits downstream IC stress during ISO 7637-2 Pulse 5a load-dump surges. |
| PPK | 4600 W - Peak pulse power rating validates capability to absorb single-event 10 ms exponential load-dump energy per ISO16750-2. |
| RθJC | 1.0 °C/W - Enables direct mounting to metal chassis or heatsink for thermal management in high-ambient under-hood environments. |
| TJ range | −55 °C to +175 °C - Full automotive-grade junction temperature range supports operation in engine compartment and transmission control units. |
| IFSM | 600 A @ 8.3 ms - Withstands high-current battery connection surges without degradation, critical for jump-start and alternator fault scenarios. |
Pinout & Package
Package: DO-218 (Type E), surface-mount, molded plastic (UL 94V-0), heatsink tab is anode terminal. Weight: 2.74 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive input / power rail connection | Electrically and thermally coupled to PCB copper pour or chassis; must be connected to protected 12 V supply line and serve as primary thermal path. |
| Cathode (Top Surface Marking Bar) | Clamping output / ground reference | Connected to system ground plane; carries full transient current during clamping; requires low-inductance layout to minimize voltage overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| 4600 W peak pulse power | Validated for single-event ISO16750-2 Pulse 5a (load dump) suppression without failure or parameter shift. |
| AEC-Q101 qualified | Qualified for automotive use with PPAP documentation and manufactured in IATF 16949-certified facilities. |
| Low thermal resistance (1.0 °C/W) | Enables >90% of transient energy to conduct directly into heatsink or chassis, reducing PCB trace heating. |
| RoHS 3 & Halogen-free | Meets EU Directive 2015/863/EU with <900 ppm Br, <900 ppm Cl, <1000 ppm Sb; supports green manufacturing requirements. |
| Low IR @ VRWM | ≤10 µA at 20 V and +25°C, rising to ≤150 µA at +175°C - minimizes standby power loss in always-on vehicle systems. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Line |
|---|---|
Use Scenario: Protects microcontroller, CAN transceivers, and sensor interfaces from alternator load-dump surges during ignition-off events. IC Role / Device Role / Timing Role: Unidirectional TVS clamps 12 V rail to ≤32.4 V within nanoseconds, preserving logic-level integrity during 10 ms exponential transients. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V domain ICs by limiting rail voltage excursion below absolute maximum ratings. |
Use Scenario: Shields door module drivers, LIN transceivers, and LED lighting controllers from battery line transients during jump-start or relay switching. IC Role / Device Role / Timing Role: Acts as first-line overvoltage clamp on fused 12 V feed, absorbing >4 kW peak energy before downstream LDOs or DC-DC converters. Use Value: Eliminates need for secondary TVS stages, reducing BOM count and PCB area while maintaining ISO 7637-2 Pulse 1/2a/3a/3b compliance. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera Power |
Use Scenario: Safeguards solenoid drivers and position sensors against reverse-battery and load-dump events in automatic transmission control circuits. IC Role / Device Role / Timing Role: Mounted directly at connector entry point; conducts surge current through heatsink tab to chassis ground, minimizing loop inductance. Use Value: Maintains functional safety integrity (ASIL-B capable design) by preventing reset or corruption during high-energy transients near gearbox electronics. |
Use Scenario: Secures 12 V input to image signal processors and serializer/deserializer ICs in rear-view and surround-view camera modules. IC Role / Device Role / Timing Role: Provides fast-response clamping (<1 ns response time) to preserve video timing integrity during ignition cycling and EMI-rich cabin environments. Use Value: Ensures uninterrupted HD video stream by suppressing sub-100 ns ringing and preventing pixel corruption caused by rail bounce. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | DO-214AC package; 400 W PPK; 32.4 V VC @ 12.3 A; RθJC = 50 °C/W | Limited to low-energy ISO 7637-2 Pulse 1/2a; unsuitable for load-dump (Pulse 5a) | Select only for cost-sensitive non-load-dump applications where thermal mass is sufficient and peak power <500 W. |
| SMCJ20A | DO-214AB package; 1500 W PPK; 32.4 V VC @ 46.5 A; RθJC = 10 °C/W | Meets ISO 7637-2 but not ISO16750-2 Pulse 5a; lower thermal performance than DO-218 | Use where board space allows larger footprint and thermal interface is less constrained; verify derating above +100°C case temp. |
Compared with SMAJ20A and SMCJ20A, DM6W20AQ-13 delivers 3× higher peak power and 10× lower thermal resistance-enabling direct integration into compact, high-temperature engine bay locations without auxiliary heatsinking or derating penalties.
Availability
DM6W20AQ-13 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS camera power systems requiring stable component supply, AEC-Q101 compliance, and ISO16750-2 Pulse 5a surge immunity.
Supply support for DM6W20AQ-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 with ISO/TS 16949 and IATF 16949 certification.
The DM6WxxAQ series belongs to Diodes' automotive-qualified TVS portfolio, engineered specifically for under-hood load-dump protection with emphasis on thermal robustness, AEC-Q101 stress testing, and seamless integration into IATF 16949 production workflows.
FAQ
What is the correct PCB layout practice for DM6W20AQ-13's heatsink tab?
The anode heatsink tab must be soldered to a minimum 200 mm² copper pour connected to chassis ground or dedicated thermal pad. Use ≥4 thermal vias (0.3 mm diameter, filled) beneath the tab to transfer heat to inner layers. Avoid routing signal traces under the device to prevent coupling.
Does DM6W20AQ-13 meet ISO 16750-2 Pulse 5a requirements?
Yes-DM6W20AQ-13 is rated for 4600 W peak pulse power at 25°C case temperature using the 10 ms exponential waveform defined in ISO 16750-2 Annex D. Derating curves in Figure 2 confirm compliance up to +150°C case temperature.
Can DM6W20AQ-13 replace older DO-214AB TVS diodes in existing designs?
No direct replacement: DM6W20AQ-13 uses DO-218 (Type E) with anode-heatsink polarity, whereas DO-214AB parts have cathode-heatsink orientation. Layout redesign, polarity verification, and thermal validation are required before substitution.
What is the maximum allowable reverse leakage at +175°C junction temperature?
Per datasheet Table "Electrical Characteristics", maximum reverse leakage ID at VRWM = 20 V and TJ = +175°C is 150 µA. This value is measured under short-pulse conditions to avoid self-heating artifacts and reflects actual high-temperature operational stability.
DM6W20AQ-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
DM6W20AQ-13 FAQ
1.How can I place an order for DM6W20AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM6W20AQ-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 DM6W20AQ-13 reliable?
The price and inventory of DM6W20AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM6W20AQ-13 is usually 5 days.
3.What payment methods are accepted for DM6W20AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM6W20AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM6W20AQ-13?
DM6W20AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM6W20AQ-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 DM6W20AQ-13?
For technical support, including DM6W20AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM6W20AQ-13 requirements.
6.How does Aetrix verify that DM6W20AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM6W20AQ-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 DM6W20AQ-13 meets industry standards.
7.What is the process for return or replacement of DM6W20AQ-13?
All DM6W20AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM6W20AQ-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 DM6W20AQ-13 part is unused and in its original packaging.
Return procedure for DM6W20AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM6W20AQ-13 Tags
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