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Diodes Incorporated DM6W43AQ-13
- Part No.:
- DM6W43AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM6W43AQ-13.pdf
- Description:
- Transient Voltage Suppressor PP
- Quantity:
- Payment:
- Shipping:
Inventory:9,458
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Product details
Overview
DM6W43AQ-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 4600W peak pulse power (10/1000µs), 43V reverse standoff voltage (VRWM), 69.4V max clamping voltage at 66A IPP, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the DM6W43AQ-13 datasheet, DM6W43AQ-13 pinout, DM6W43AQ-13 application, or DM6W43AQ-13 equivalent, this device is selected for high-energy transient suppression in 12V/24V automotive power rails where low thermal resistance (RθJC = 1.0°C/W), stable clamping performance up to +175°C junction temperature, and RoHS-compliant lead-free plating are critical.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp with heatsink-connected anode polarity, enabling direct mounting to metal chassis or heat spreaders for optimal thermal management. Its 43V VRWM aligns with 36V nominal battery systems, while 69.4V clamping at 66A ensures robust protection against ISO16750-2 Pulse 5a (load dump) surges.
The DO-218 package delivers low thermal resistance (1.0°C/W junction-to-case) and supports 6W steady-state power dissipation at TC = +25°C. Electrical behavior is characterized by <10µA reverse leakage at VRWM and <150µA at TJ = +175°C, ensuring minimal standby power loss in always-on vehicle modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 4600W (10/1000µs waveform) - sustains single-event load-dump transients without failure |
| Reverse Standoff Voltage | 43V - blocks normal 36V system operation while triggering above overvoltage thresholds |
| Max Clamping Voltage | 69.4V at 66A IPP - limits downstream IC voltage stress during ISO16750-2 Pulse 5a events |
| Junction-to-Case Thermal Resistance | 1.0°C/W - enables efficient heat transfer to heatsink, supporting continuous 6W dissipation at TC = +25°C |
| Operating Temperature Range | −55°C to +175°C - qualified for engine compartment and transmission control unit environments |
| AEC-Q101 Qualification | Qualified - meets stress test requirements for automotive semiconductor reliability (HTOL, TCT, etc.) |
| RoHS & Green Compliance | Lead-free, halogen-free, antimony-free - satisfies EU Directive 2015/863/EU and automotive ELV requirements |
Pinout & Package
DO-218 (Type E) surface-mount package with molded plastic body (UL 94V-0), 2.74g mass, and heatsink-integrated anode terminal. Polarity marked by bar symbol denoting cathode; heatsink tab is electrically connected to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive surge current path and thermal interface | Must be soldered to copper pour or metal chassis for thermal conduction and low-inductance return path |
| Cathode (Top Surface Pad) | Surge current sink and voltage reference node | Connected to protected line (e.g., battery rail); clamps voltage when reverse-biased beyond VBR |
Key Features
| Feature | Design Value |
|---|---|
| 4600W Peak Pulse Power | Withstands ISO16750-2 Load Dump (Pulse 5a) without degradation in 12V/24V systems |
| Low Thermal Resistance (1.0°C/W) | Enables direct heatsink mounting for sustained power handling in high-ambient environments |
| High-Temperature Stability | Specified leakage <150µA at TJ = +175°C - maintains protection integrity in under-hood locations |
| AEC-Q101 Qualification | Validated for automotive use with PPAP capability and IATF 16949 manufacturing controls |
| Unidirectional Clamping | Optimized for DC power rail protection where reverse polarity is not expected |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects microcontroller and CAN transceiver power inputs from alternator load-dump spikes during battery disconnect events. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery feed and input filter capacitor. Use Value: Limits transient voltage to ≤69.4V at 66A, preventing latch-up or gate oxide damage in 5V/3.3V LDOs and MCU I/Os. |
Use Scenario: Shields LIN bus transceivers and power management ICs from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling). IC Role / Device Role / Timing Role: Primary surge suppression element on 12V supply line upstream of DC-DC converter. Use Value: Maintains <10µA leakage at 43V VRWM, minimizing quiescent current draw in always-on sleep modes. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera Power |
Use Scenario: Safeguards solenoid driver ICs and position sensor interfaces against repetitive load-dump events in automatic transmission systems. IC Role / Device Role / Timing Role: High-energy clamping device mounted directly to aluminum housing for thermal conduction. Use Value: Delivers 1.0°C/W RθJC to sustain 6W average dissipation during extended hot-soak conditions (TJ ≤ +175°C). |
Use Scenario: Protects image sensor and serializer ICs in rear-view cameras exposed to 24V truck/bus battery systems. IC Role / Device Role / Timing Role: First-line transient suppressor on camera module's main power input before EMI filter. Use Value: Achieves 69.4V clamping at 66A IPP, ensuring voltage stays below absolute maximum ratings of 70V-rated analog front-end components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A | Lower peak power (400W), SMA package, RθJC ≈ 50°C/W | Not suitable for load-dump; limited to ISO7637-2 Pulse 1/2a/3 | Select only for cost-sensitive non-load-dump applications with lower ambient temperatures |
| SMCJ43A | Same 43V VRWM, 4000W peak power, but SMC package (RθJC ≈ 2.5°C/W) | Lacks AEC-Q101 qualification and automotive change control documentation | Acceptable for industrial-grade designs where PPAP and IATF 16949 traceability are not required |
Compared with SMAJ43A and SMCJ43A, DM6W43AQ-13 uniquely combines 4600W load-dump capability, 1.0°C/W thermal resistance, AEC-Q101 qualification, and automotive-specific change control-making it the only option qualified for safety-critical engine bay deployments requiring ISO16750-2 compliance.
Availability
DM6W43AQ-13 is available at Aetrix Electronics and suitable for automotive power rail protection, engine control unit (ECU) design, and ADAS camera module development requiring stable component supply across long production lifecycles.
Supply support for DM6W43AQ-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 DM6WxxAQ series belongs to Diodes' automotive-grade TVS portfolio, engineered specifically to meet ISO16750-2 and ISO7637-2 surge immunity requirements in harsh-temperature vehicle environments.
FAQ
What is the maximum clamping voltage of DM6W43AQ-13 at its rated peak pulse current?
The DM6W43AQ-13 has a maximum clamping voltage (VC) of 69.4V at 66A peak pulse current (IPP), measured using the 10/1000µs standard waveform. This value is guaranteed across the full operating temperature range (−55°C to +175°C) and ensures downstream components remain within safe voltage limits during load-dump events.
Can DM6W43AQ-13 be used in bidirectional surge protection applications?
No. DM6W43AQ-13 is a unidirectional TVS diode with anode-connected heatsink polarity. It conducts only during reverse-biased overvoltage events and provides no protection against positive-going transients on the cathode side. For bidirectional protection, a dedicated bidirectional TVS or back-to-back configuration is required.
How does the DO-218 package improve thermal performance compared to SMA or SMC packages?
The DO-218 (Type E) package integrates the anode directly into a large metal heatsink tab, achieving a junction-to-case thermal resistance of 1.0°C/W-significantly lower than SMAJ (≈50°C/W) or SMCJ (≈2.5°C/W) packages. This allows direct mounting to PCB copper pours or metal enclosures, enabling reliable 6W steady-state dissipation and superior load-dump survivability.
Is DM6W43AQ-13 compliant with automotive-specific environmental standards beyond AEC-Q101?
Yes. In addition to AEC-Q101 qualification, DM6W43AQ-13 is manufactured in IATF 16949 certified facilities, supports PPAP documentation, and complies with ISO16750-2 (Pulse 5a load dump) and ISO7637-2 (Pulse 1, 2a, 3a, 3b). It also meets RoHS 3 (2015/863/EU), is halogen- and antimony-free, and carries UL 94V-0 flammability rating.
DM6W43AQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-218AB
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 66A
- 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
DM6W43AQ-13 FAQ
1.How can I place an order for DM6W43AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM6W43AQ-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 DM6W43AQ-13 reliable?
The price and inventory of DM6W43AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM6W43AQ-13 is usually 5 days.
3.What payment methods are accepted for DM6W43AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM6W43AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM6W43AQ-13?
DM6W43AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM6W43AQ-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 DM6W43AQ-13?
For technical support, including DM6W43AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM6W43AQ-13 requirements.
6.How does Aetrix verify that DM6W43AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM6W43AQ-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 DM6W43AQ-13 meets industry standards.
7.What is the process for return or replacement of DM6W43AQ-13?
All DM6W43AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM6W43AQ-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 DM6W43AQ-13 part is unused and in its original packaging.
Return procedure for DM6W43AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM6W43AQ-13 Tags
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Diodes Incorporated
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