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Diodes Incorporated DM8W11AQ-13
- Part No.:
- DM8W11AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W11AQ-13.pdf
- Description:
- TVS DO-218
- Quantity:
- Payment:
- Shipping:
Inventory:5,077
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Product details
Overview
DM8W11AQ-13 from Diodes Incorporated is a surface-mount transient voltage suppressor (TVS) diode in DO-218 (Type E) package, designed for automotive load dump and ISO7637-2 surge protection. It features 6600W peak pulse power (10/1000µs), 11V reverse standoff voltage (VRWM), 12.3V max breakdown voltage (VBR), clamping voltage of 17.0V at 388A IPP, and operates from −55°C to +175°C.
For engineers reviewing the DM8W11AQ-13 datasheet, DM8W11AQ-13 pinout, DM8W11AQ-13 application, or DM8W11AQ-13 equivalent, this device is selected for high-reliability 12V/24V automotive power rail protection where AEC-Q101 qualification, ISO16750-2 compliance, and glass-passivated junction stability under thermal stress are critical design requirements.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) to high-energy transients. Its DO-218 package provides low thermal resistance (RθJC = 0.9°C/W) and heatsink-integrated anode polarity, enabling direct mounting to metal chassis for enhanced thermal dissipation during load dump events.
The device meets ISO 10605 (Pulse A/B), ISO 7637-2 (Pulse 1, 2a, 3a, 3b), and ISO 16750-2 load dump specifications. Its 175°C junction rating supports operation in under-hood environments without derating up to TC = +125°C per Figure 1 derating curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 6600W (10/1000µs waveform); sustains full load dump energy without failure in automotive battery line applications |
| Reverse Standoff Voltage | 11V; sets minimum operating voltage threshold before clamping begins, compatible with 12V nominal systems |
| Clamping Voltage | 17.0V at 388A IPP; limits downstream IC voltage to safe level during 700A IFSM surge events |
| Junction Temperature Range | −55°C to +175°C; enables placement near engines or power electronics without thermal shutdown |
| Thermal Resistance (Junction-to-Case) | 0.9°C/W; allows efficient heat transfer to heatsink, supporting continuous 8W steady-state dissipation at TC = +25°C |
| AEC-Q101 Qualified | Yes; validated for automotive use including temperature cycling, humidity bias, and mechanical shock per AEC standard |
Pinout & Package
DO-218 (Type E) surface-mount package with heatsink-integrated anode terminal. Molded plastic case (UL 94V-0), matte tin-plated terminals, polarity marked by bar (cathode) and circle (anode) on top view. Weight: 2.74g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Pad) | Positive terminal / thermal path | Electrically connected to metal heatsink base; must be soldered to copper pour for thermal and electrical integrity |
| Cathode (Top Lead) | Negative terminal / surge current sink | Carries full transient current during clamping; routed to protected circuit ground or return path |
Key Features
| Feature | Design Value |
|---|---|
| 6600W Peak Pulse Power | Handles full ISO 16750-2 load dump surges (up to 120V, 10ms exponential) without degradation |
| Glass-Passivated Die | Prevents moisture ingress and electromigration, ensuring long-term reliability in humid under-hood environments |
| Lead-Free & Halogen-Free | RoHS 3 compliant (<900ppm Br/Cl, <1000ppm Sb); satisfies automotive OEM environmental mandates |
| PPAP Capable | Supports production part approval process documentation for Tier 1 automotive suppliers |
| Low RθJC (0.9°C/W) | Enables >80% of surge energy to dissipate into PCB copper or external heatsink, reducing junction temperature rise |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Line |
|---|---|
Use Scenario: Protects microcontroller, CAN transceivers, and sensors from alternator load dump spikes during ignition-off events. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor; clamps within 1 ns to limit voltage to ≤17V. Use Value: Prevents latch-up or gate oxide damage in 3.3V/5V logic ICs downstream of DC/DC converters. |
Use Scenario: Shields LIN bus transceivers, LED drivers, and relay drivers from ISO7637-2 Pulse 1 (inductive kickback) and Pulse 3b (capacitive discharge). IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V supply rail upstream of LDO regulators. Use Value: Maintains system uptime by avoiding brownout resets during repeated surge events in door module circuits. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Safeguards image sensor and ISP power rails against coupled transients from nearby solenoid actuation or EMI. IC Role / Device Role / Timing Role: Secondary protection stage after common-mode choke; handles differential-mode surges exceeding front-end filtering. Use Value: Eliminates pixel corruption or frame loss caused by voltage excursions beyond 1.8V/3.3V rail tolerances. |
Use Scenario: Guards H-bridge gate drivers and current sense amplifiers from motor commutation spikes and battery reversal transients. IC Role / Device Role / Timing Role: High-current TVS mounted directly on motor driver PCB heatsink; conducts >388A peak current during fault conditions. Use Value: Enables functional safety compliance (ISO 26262 ASIL-B) by preventing single-point failures in torque control path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A | Lower PPK (400W), SMA package, RθJC = 40°C/W, no AEC-Q101 qualification | Not suitable for load dump; limited to low-energy ISO7637-2 Pulse 3a/b only | Select when cost-sensitive non-automotive industrial designs require basic ESD/surge protection |
| SMCJ11A | PPK = 1500W, SMC package, RθJC = 12°C/W, AEC-Q101 qualified but not ISO16750-2 tested | Cannot sustain full 120V/10ms load dump; clamps at 18.2V @ 83A IPP | Choose for space-constrained automotive sub-systems where full load dump immunity is not required |
Compared with SMAJ11A and SMCJ11A, DM8W11AQ-13 delivers 4.4× higher surge capacity and 44× lower thermal resistance, enabling robust protection in high-power automotive modules where thermal management and regulatory compliance are non-negotiable.
Availability
DM8W11AQ-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering systems requiring stable component supply across multi-year automotive production cycles.
Supply support for DM8W11AQ-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, headquartered in Plano, Texas, with design centers across Asia and manufacturing facilities in China, Taiwan, and the U.S.
DM8W11AQ-13 belongs to Diodes' AEC-Q101-qualified automotive TVS portfolio, engineered specifically for high-energy load dump and ISO7637-2 surge immunity in 12V/24V vehicle electrical architectures.
FAQ
What is the maximum clamping voltage of DM8W11AQ-13 at rated peak pulse current?
The clamping voltage VC is 17.0V measured at 388A peak pulse current (IPP) using a 10/1000µs waveform. This value is guaranteed across the full operating temperature range (−55°C to +175°C) and ensures downstream 3.3V/5V logic remains within absolute maximum ratings during surge events.
How is polarity identified on the DO-218 package?
Polarity is marked on the top surface: a bar indicates the cathode terminal (top lead), and a circle denotes the anode (heatsink pad). The anode is electrically and thermally connected to the metal base, which must be soldered to a PCB copper pour or external heatsink for proper operation and thermal performance.
Does DM8W11AQ-13 meet ISO 16750-2 load dump requirements?
Yes - DM8W11AQ-13 is explicitly characterized for ISO 16750-2 load dump testing (Figure 2 shows load dump power vs. case temperature), sustaining 6600W at TC = +25°C and maintaining clamping performance up to TJ = +175°C, satisfying OEM requirements for under-hood power electronics.
What is the thermal resistance from junction to case, and how does it impact layout?
RθJC is 0.9°C/W. To realize this value, the anode (heatsink pad) must be soldered to ≥250 mm² of 2-oz copper with ≥4 thermal vias (0.3mm diameter, 0.8mm pitch) connecting to inner ground planes. Inadequate copper area increases effective RθJC, risking thermal runaway during repetitive surges.
DM8W11AQ-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
DM8W11AQ-13 FAQ
1.How can I place an order for DM8W11AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W11AQ-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 DM8W11AQ-13 reliable?
The price and inventory of DM8W11AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W11AQ-13 is usually 5 days.
3.What payment methods are accepted for DM8W11AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W11AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W11AQ-13?
DM8W11AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W11AQ-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 DM8W11AQ-13?
For technical support, including DM8W11AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W11AQ-13 requirements.
6.How does Aetrix verify that DM8W11AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM8W11AQ-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 DM8W11AQ-13 meets industry standards.
7.What is the process for return or replacement of DM8W11AQ-13?
All DM8W11AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W11AQ-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 DM8W11AQ-13 part is unused and in its original packaging.
Return procedure for DM8W11AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W11AQ-13 Tags
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