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Diodes Incorporated DM8W13A-13
- Part No.:
- DM8W13A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W13A-13.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:6,064
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Product details
Overview
DM8W13A-13 from Diodes Incorporated is a unidirectional 6600W surface-mount transient voltage suppressor (TVS) designed for automotive load dump and ISO7637-2 surge protection in high-reliability power line applications. It features a 13V reverse standoff voltage (VRWM), 14.4–15.9V breakdown voltage (VBR), 21.5V clamping voltage (VC) at 307A peak pulse current, and operates from –55°C to +175°C.
For engineers reviewing the DM8W13A-13 datasheet, DM8W13A-13 pinout, DM8W13A-13 application, or DM8W13A-13 equivalent, this part delivers validated ISO16750-2 Pulse A/B and ISO7637-2 Pulse 1/2a/3a/3b compliance, DO-218 package thermal robustness (RθJC = 0.9°C/W), and automotive-grade reliability without requiring external biasing or control logic.
Technical Context
This TVS diode operates in avalanche breakdown mode under transient overvoltage events, clamping line voltage to ≤21.5V at 307A (10/1000µs waveform). Its unidirectional polarity and anode-heatsink configuration enable direct integration into 12V/24V automotive power rails with minimal PCB footprint.
Thermal performance is defined by a 0.9°C/W junction-to-case resistance and derated power dissipation above +25°C - sustaining 8W steady-state at TC = +25°C and retaining >5200W peak pulse capability at TA = +25°C per 10/10000µs waveform. It meets AEC-Q qualification standards for high-reliability automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 13 V - Maximum continuous reverse operating voltage before leakage exceeds 10 µA |
| VBR (min/max) | 14.4–15.9 V @ 5 mA - Ensures predictable avalanche initiation across production lot |
| VC @ IPP | 21.5 V @ 307 A (10/1000µs) - Limits downstream IC voltage stress during load dump transients |
| PPK | 6600 W - Peak surge energy handling capacity for ISO16750-2 Pulse 5a (load dump) |
| RθJC | 0.9 °C/W - Enables efficient heatsinking via PCB copper pour or metal-core substrate |
| TJ Range | –55°C to +175°C - Supports under-hood placement without derating in engine control units |
| IFSM | 700 A @ 8.3 ms - Withstands repetitive battery connection surges without degradation |
Pinout & Package
Package: DO-218 (Type E), molded plastic, UL 94V-0 rated, 2.74 g weight. Anode terminal is connected to heatsink (cathode marked by bar on top surface).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Current return path during clamping | Electrically and thermally coupled to PCB ground plane or heatsink for low-inductance, high-current discharge |
| Cathode (Marked) | Transient voltage sensing node | Connected to protected line (e.g., alternator output); initiates conduction when VRWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| 6600W peak pulse power | Handles full ISO16750-2 load dump energy (≥100V, 10ms exponential) without failure |
| Junction temperature rating | +175°C operation enables placement near high-power components without thermal shutdown |
| Unidirectional polarity | Optimized for DC power rail protection only - eliminates reverse-bias leakage concerns in battery-fed systems |
| Lead-free & halogen-free | Complies with RoHS 3 and automotive "Green" definitions (<900 ppm Br/Cl, <1000 ppm Sb) |
| JEDEC-qualified reliability | Validated per AEC-Q standards for automotive electronics - no burn-in or screening waivers required |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Line |
|---|---|
Use Scenario: Protects microcontroller, CAN transceivers, and analog sensors from alternator load dump spikes during ignition-off events. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery feed and input filter capacitor, clamping transients before LDO regulators. Use Value: Limits voltage to ≤21.5V during 307A surges, preventing latch-up or gate oxide damage in 3.3V/5V supply domains. | Use Scenario: Shields door module power inputs from jump-start surges and battery reversal-induced transients. IC Role / Device Role / Timing Role: Primary surge clamp on 12V main rail, coordinated with upstream fuse and downstream LC filtering. Use Value: Maintains system uptime by surviving ≥700A single-half-sine surges without parametric shift or short-circuit failure. |
| ADAS Camera Power Supply | Infotainment Head Unit DC-DC Input |
Use Scenario: Secures 12V-to-3.3V buck converter input in rear-view camera modules exposed to vehicle vibration and thermal cycling. IC Role / Device Role / Timing Role: First-line transient defense upstream of input EMI filter and DC-DC controller IC. Use Value: Delivers <100 ns response time and stable clamping across –40°C to +125°C ambient, ensuring image sensor boot integrity. | Use Scenario: Guards multi-rail DC-DC converters powering audio DSPs, display drivers, and USB interfaces against cold-cranking surges. IC Role / Device Role / Timing Role: High-energy TVS integrated into front-end power distribution board with thermal vias to inner ground layers. Use Value: Sustains 8W steady-state dissipation at TC = +25°C while supporting >100,000-cycle surge endurance per AEC-Q200. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A | Lower PPK (400W), DO-214AC package, RθJC ≈ 45°C/W | Limited to 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 |
| SM8S13A | Same DO-218 package, 6600W PPK, but 13.3–14.7V VBR range and 21.5V VC @ 307A | Identical ISO16750-2 compliance; minor VBR tolerance difference affects margin at edge cases | Prefer for second-source flexibility where identical thermal and surge specs are mandatory |
Compared with SMAJ13A and SM8S13A, DM8W13A-13 provides superior thermal management (0.9°C/W vs. ~45°C/W) and guaranteed load dump survivability - critical for under-hood ECUs where sustained high-temperature operation and single-event robustness are non-negotiable.
Availability
DM8W13A-13 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera power supplies, and infotainment head unit DC-DC inputs requiring stable component supply across extended temperature and high-surge environments.
Supply support for DM8W13A-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 power management, signal integrity, and protection solutions for automotive, industrial, and consumer markets.
The DM8WxxA series belongs to Diodes' automotive-grade TVS portfolio, engineered specifically to meet ISO16750-2 and ISO7637-2 surge immunity requirements in harsh vehicular environments - emphasizing thermal stability, surge endurance, and AEC-Q qualification.
FAQ
What is the maximum clamping voltage of DM8W13A-13 under standard test conditions?
The maximum clamping voltage (VC) is 21.5 V when subjected to a 10/1000 µs waveform with a peak pulse current (IPP) of 307 A. This value is measured at TA = +25°C and ensures downstream circuitry remains within safe operating voltage limits during ISO16750-2 Pulse 5a load dump events.
Can DM8W13A-13 be used in bidirectional surge protection applications?
No - DM8W13A-13 is unidirectional only, with the heatsink serving as the anode terminal. It conducts only during positive transients on the cathode side. For bidirectional protection (e.g., data lines or AC-coupled signals), a dedicated bidirectional TVS such as SMBJ13CA must be selected instead.
How does the DO-218 package contribute to thermal performance?
The DO-218 (Type E) package integrates a large metal heatsink directly bonded to the anode, achieving a low 0.9°C/W junction-to-case thermal resistance. This allows efficient heat transfer to PCB copper pours or external heatsinks, enabling sustained 8W power dissipation at TC = +25°C and maintaining reliability during repeated surge events.
Is there an automotive-qualified version of DM8W13A-13?
Yes - the automotive-qualified variant is DM8W13AQ-13, which follows the same electrical and mechanical specifications but is explicitly qualified to AEC-Q200 Grade 0 (–40°C to +150°C) and documented in a separate datasheet (DS40428Q). It undergoes additional stress testing including temperature cycling and humidity bias HAST.
DM8W13A-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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 307A
- Power - Peak Pulse:
- 6600W (6.6kW)
- 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
DM8W13A-13 FAQ
1.How can I place an order for DM8W13A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W13A-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 DM8W13A-13 reliable?
The price and inventory of DM8W13A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W13A-13 is usually 5 days.
3.What payment methods are accepted for DM8W13A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W13A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W13A-13?
DM8W13A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W13A-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 DM8W13A-13?
For technical support, including DM8W13A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W13A-13 requirements.
6.How does Aetrix verify that DM8W13A-13 is sourced from the original manufacturer or authorized distributors?
All DM8W13A-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 DM8W13A-13 meets industry standards.
7.What is the process for return or replacement of DM8W13A-13?
All DM8W13A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W13A-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 DM8W13A-13 part is unused and in its original packaging.
Return procedure for DM8W13A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W13A-13 Tags
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