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Diodes Incorporated DM8W11A-13
- Part No.:
- DM8W11A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W11A-13.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:4,926
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Product details
Overview
DM8W11A-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 11V reverse standoff voltage, 18.2V max clamping voltage at 363A peak pulse current, and operates from −55°C to +175°C with DO-218 (Type E) package.
For engineers reviewing the DM8W11A-13 datasheet, DM8W11A-13 pinout, DM8W11A-13 application, or DM8W11A-13 equivalent, this part delivers verified ISO16750-2 Pulse A/B and ISO7637-2 Pulse 1/2a/3a/3b compliance, high-temperature stability up to TJ = +175°C, and lead-free, halogen-free "Green" construction per RoHS 3 and AEC-Q standards.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp transient overvoltages on 12V/24V automotive power rails. Its unidirectional polarity and heatsink-anode configuration enable direct mounting to thermal planes for efficient heat dissipation during 10/1000µs surges up to 6600W.
It is rated for 700A non-repetitive forward surge current (8.3ms half-sine), exhibits 0.9°C/W junction-to-case thermal resistance, and maintains ≤150µA leakage at VRWM and TJ = +175°C - critical for low-power standby circuits in engine control units and body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 6600W (10/1000µs waveform) - handles severe load dump transients without failure |
| Reverse Standoff Voltage | 11V - sets minimum operating voltage threshold before clamping activates |
| Clamping Voltage | 18.2V @ 363A - limits downstream IC voltage stress during ISO16750-2 Pulse A |
| Operating Temperature | −55°C to +175°C - supports under-hood placement in modern automotive ECUs |
| Junction-to-Case RθJC | 0.9°C/W - enables effective thermal coupling to PCB copper or heatsink for sustained surge handling |
| Leakage Current | ≤10µA @ VRWM, ≤150µA @ VRWM & TJ = +175°C - preserves battery life in always-on modules |
| Package | DO-218 (Type E) - surface-mount, heatsink-anode configuration for mechanical robustness and thermal performance |
Pinout & Package
DO-218 (Type E) package with two terminals: Anode connected to heatsink tab (cathode marked by bar), cathode at leaded terminal. Designed for high-current surge conduction and low-inductance PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Current return path during clamping | Direct thermal interface to PCB copper pour or external heatsink; must be electrically connected to system ground or low-impedance return |
| Cathode (Leaded Terminal) | Transient voltage sensing and clamping node | Connected to protected line (e.g., battery feed); clamps to anode when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 6600W Peak Pulse Power | Withstands full ISO16750-2 Load Dump energy (≥400V, 10ms exponential) without degradation |
| TJ = +175°C Capability | Enables placement near high-heat sources (e.g., power MOSFETs, DC-DC converters) without derating |
| Uni-directional Polarity Only | Optimized for positive-rail protection only; eliminates reverse-bias leakage concerns in 12V systems |
| Lead-Free & Halogen-Free | Meets RoHS 3 (2015/863/EU) and automotive "Green" requirements (<900ppm Br/Cl, <1000ppm Sb) |
| AEC-Q Qualified | Qualified per JEDEC standards for automotive-grade reliability and lifetime stress testing |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Protects microcontroller power supply against alternator load dump spikes during battery disconnect events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main 12V rail upstream of DC-DC converters. Use Value: Limits voltage to ≤18.2V during 6600W transients, preventing damage to 28V-rated LDOs and MCU I/O. |
Use Scenario: Shields LIN bus transceivers and door module MCUs from ISO7637-2 Pulse 3b (capacitive discharge) noise. IC Role / Device Role / Timing Role: Localized TVS at connector entry point for low-voltage sub-systems. Use Value: Sub-20V clamping ensures LIN PHY remains within absolute maximum ratings during fast 100ns transients. |
| Advanced Driver Assistance Systems (ADAS) | Electric Power Steering (EPS) |
Use Scenario: Guards camera module power input against coupled transients from nearby motor drivers and radar units. IC Role / Device Role / Timing Role: Secondary surge suppression stage after primary front-end filter. Use Value: 0.9°C/W RθJC allows direct thermal anchoring to aluminum housing, sustaining repeated 363A pulses. |
Use Scenario: Safeguards gate driver ICs and current sense amplifiers from inductive kickback during motor phase switching. IC Role / Device Role / Timing Role: High-energy clamping element across H-bridge supply rail. Use Value: 700A IFSM rating accommodates worst-case 8.3ms half-sine surges without bond wire fusing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A | Lower PPK (400W), DO-214AC package, RθJC ≈ 45°C/W | Not suitable for load dump; limited to ISO7637-2 Pulse 1/3 only | Select only for cost-sensitive non-load-dump applications where thermal mass is sufficient |
| SMCJ11A | PPK = 1500W, DO-214AB package, RθJC ≈ 3.5°C/W | Cannot meet ISO16750-2 Pulse A energy requirement; insufficient for 24V systems | Acceptable for 12V BCMs with moderate surge exposure but not for ECU main rail protection |
Compared with SMAJ11A and SMCJ11A, DM8W11A-13 uniquely delivers 6600W capability in a thermally optimized DO-218 package - enabling single-device compliance with both ISO16750-2 Pulse A (load dump) and Pulse B (battery reversal), while maintaining low leakage at elevated junction temperatures.
Availability
DM8W11A-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 temperature and surge environments.
Supply support for DM8W11A-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.
DM8W11A-13 belongs to Diodes' automotive-grade TVS portfolio engineered specifically for ISO16750-2 and ISO7637-2 compliance in harsh under-hood environments - emphasizing thermal robustness, long-term surge endurance, and AEC-Q qualification.
FAQ
What is the maximum clamping voltage of DM8W11A-13 at its rated peak pulse current?
The DM8W11A-13 has a maximum clamping voltage (VC) of 18.2V at 363A peak pulse current (10/1000µs waveform), measured per the test conditions defined in DS40428 Rev. 7–2. This value is guaranteed across the full operating temperature range and ensures downstream 28V-rated components remain within safe operating limits during surge events.
Can DM8W11A-13 be used in bidirectional configurations?
No - DM8W11A-13 is unidirectional only, with the heatsink tab designated as the anode and the leaded terminal as the cathode. Its electrical characteristics (e.g., VBR, VC, IR) are specified for forward-biased clamping only. For bidirectional protection, Diodes offers the DM8W11CA series, which uses a different internal structure and marking.
How does the DO-218 (Type E) package improve thermal performance over standard SMB/SMA packages?
The DO-218 (Type E) package integrates a large metal heatsink tab directly bonded to the silicon die's anode, achieving a junction-to-case thermal resistance of just 0.9°C/W - over 40× lower than typical DO-214AC devices. This allows rapid heat transfer to PCB copper or external heatsinks during multi-pulse surge events, preventing thermal runaway.
Is DM8W11A-13 qualified to AEC-Q200?
DM8W11A-13 is qualified to JEDEC standards referenced in AEC-Q200 for high-reliability automotive applications, including temperature cycling, humidity bias, and surge endurance testing. Full qualification data is documented in Diodes' AEC-Q product definitions portal and applies to the commercial-grade DM8WxxA series as well as the Q-qualified DM8WxxAQ variants.
DM8W11A-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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 363A
- 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
DM8W11A-13 FAQ
1.How can I place an order for DM8W11A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W11A-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 DM8W11A-13 reliable?
The price and inventory of DM8W11A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W11A-13 is usually 5 days.
3.What payment methods are accepted for DM8W11A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W11A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W11A-13?
DM8W11A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W11A-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 DM8W11A-13?
For technical support, including DM8W11A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W11A-13 requirements.
6.How does Aetrix verify that DM8W11A-13 is sourced from the original manufacturer or authorized distributors?
All DM8W11A-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 DM8W11A-13 meets industry standards.
7.What is the process for return or replacement of DM8W11A-13?
All DM8W11A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W11A-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 DM8W11A-13 part is unused and in its original packaging.
Return procedure for DM8W11A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W11A-13 Tags
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