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Diodes Incorporated DM6W43A-13
- Part No.:
- DM6W43A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM6W43A-13.pdf
- Description:
- Transient Voltage Suppressor PP
- Quantity:
- Payment:
- Shipping:
Inventory:2,461
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Product details
Overview
DM6W43A-13 from Diodes Incorporated is a surface-mount transient voltage suppressor (TVS) diode designed for automotive load dump and ISO7637-2 surge protection in 12V/24V systems. It features a 43V reverse standoff voltage, 69.4V maximum clamping voltage at 66A peak pulse current, 4600W peak pulse power (10/1000µs), and DO-218 package with anode-heatsink polarity. It is qualified to AEC-Q standards and used in engine control units and body electronics.
For engineers reviewing the DM6W43A-13 datasheet, DM6W43A-13 pinout, DM6W43A-13 application, or DM6W43A-13 equivalent, this page delivers verified electrical parameters, thermal performance data, ISO-compliant surge capability, and automotive-grade reliability context - all critical for robust power rail protection design.
Technical Context
This TVS diode operates as a unidirectional clamping device with anode-connected heatsink configuration, enabling high-power dissipation directly into PCB copper. Its low thermal resistance (RθJC = 1.0°C/W) supports sustained surge handling under elevated case temperatures up to +175°C.
The device meets ISO16750-2 load dump (10ms exponential waveform) and ISO7637-2 Pulse 1/2a/3a/3b requirements. Clamping occurs at 69.4V under 66A (10/1000µs), with <10µA reverse leakage at VRWM and breakdown voltage tightly specified at 47.8–52.8V @ 5mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 43 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system bus margin for 24V automotive applications. |
| VBR min/max | 47.8 / 52.8 V @ 5 mA - Tight breakdown tolerance ensures predictable turn-on during transients without premature conduction. |
| VC @ IPP | 69.4 V @ 66 A (10/1000µs) - Clamping voltage defines worst-case overvoltage seen by downstream ICs during surge events. |
| PPK | 4600 W (10/1000µs) - Peak pulse power rating validated per ISO16750-2 load dump profile; enables single-device protection of high-energy surges. |
| RθJC | 1.0 °C/W - Low junction-to-case thermal resistance allows efficient heat transfer to heatsink or copper pour, sustaining repeated surge duty. |
| TJ range | −55 to +175 °C - Extended temperature operation supports under-hood placement in modern engine control modules. |
Pinout & Package
Package: DO-218 (Type E), surface-mount, molded plastic (UL 94V-0), anode connected to heatsink tab, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Current return path and thermal interface | Must be soldered to large copper area or heatsink for effective thermal management; electrically connects to system ground or low-side reference. |
| Cathode (Top Marked Pin) | Transient voltage clamping node | Connected to protected line (e.g., battery rail); conducts surge current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 4600W peak pulse power | Enables single-device compliance with ISO16750-2 load dump (up to 120V, 10ms) without parallel staging. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream 48V-tolerant automotive ICs while maintaining fast response. |
| AEC-Q qualified reliability | Validated for automotive use per JEDEC standards - supports long-term deployment in safety-critical ECU environments. |
| Lead-free, halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive ELV directive requirements for sustainable manufacturing. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects microcontroller, CAN transceivers, and sensor interfaces from alternator load dump surges during battery disconnection. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤69.4V, preventing latch-up or gate oxide damage in 3.3V/5V logic powered from 12V rails. |
Use Scenario: Shields LIN transceivers, door lock actuators, and lighting drivers from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling). IC Role / Device Role / Timing Role: Primary surge suppression element on fused 12V supply line upstream of local regulators. Use Value: Withstands 600A non-repetitive forward surge (IFSM), ensuring survivability during severe vehicle-level ESD and switching events. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Safeguards image sensor and ISP power inputs against coupled transients from nearby high-current solenoids or motors. IC Role / Device Role / Timing Role: Secondary protection stage after fuse and upstream LC filter; clamps residual overshoot. Use Value: Low 10µA leakage at 43V VRWM avoids quiescent current penalty in always-on camera modules with strict sleep-mode budgets. |
Use Scenario: Guards H-bridge gate drivers and current sense amplifiers from motor back-EMF spikes and battery reversal transients. IC Role / Device Role / Timing Role: High-energy TVS mounted directly at motor driver power entry point with thermal pad to inner ground plane. Use Value: 1.0°C/W RθJC enables >3000W sustained surge handling at TC = +125°C - critical for EPS thermal derating margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A | Lower PPK (400W), SMA package, RθJC = 45°C/W, no AEC-Q qualification | Limited to low-energy consumer or industrial I/O protection; unsuitable for automotive load dump | Select only for cost-sensitive non-automotive designs where surge energy <500W and thermal budget permits higher junction rise. |
| SMCJ43A | PPK = 1500W, SMC package, RθJC = 2.5°C/W, AEC-Q not claimed | Acceptable for ISO7637-2 Pulse 1/2a but fails ISO16750-2 load dump due to insufficient energy rating | Use when space constraints prevent DO-218 mounting but automotive qualification is not required; verify thermal margin at peak ambient. |
Compared with SMAJ43A and SMCJ43A, DM6W43A-13 delivers 3× higher peak power and 2.5× lower thermal resistance, making it the only option among the three qualified for full automotive load dump compliance and under-hood thermal environments.
Availability
DM6W43A-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera power supplies, and electric power steering systems requiring stable component supply across automotive production lifecycles.
Supply support for DM6W43A-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, manufacturing, and sales operations across Asia, Europe, and North America.
DM6W43A-13 belongs to Diodes' automotive-grade TVS portfolio, engineered specifically for ISO16750-2 and ISO7637-2 compliance in harsh-temperature vehicle subsystems - emphasizing high-energy clamping, thermal robustness, and AEC-Q reliability.
FAQ
What is the maximum clamping voltage of DM6W43A-13 under standard test conditions?
The maximum clamping voltage VC is 69.4 V at a peak pulse current IPP of 66 A using the 10/1000 µs waveform, measured per IEC 61000-4-5 and ISO 16750-2 Annex C. This value is guaranteed across the full operating temperature range and represents the worst-case overvoltage imposed on protected circuitry during surge events.
Is DM6W43A-13 suitable for bidirectional surge protection?
No - DM6W43A-13 is a unidirectional TVS diode with anode-heatsink polarity. It conducts only during positive transients on the cathode line relative to the anode (ground). For bidirectional protection, two devices must be used in series opposition or a dedicated bidirectional part like DM6W43CA-13 should be selected.
How does the DO-218 package improve thermal performance compared to SMA or SMC packages?
The DO-218 (Type E) package features an integrated metal heatsink tab that provides direct thermal conduction from the silicon die to PCB copper. With RθJC = 1.0°C/W - versus 45°C/W for SMAJ43A and 2.5°C/W for SMCJ43A - it reduces junction temperature rise by >95% under identical 4600W surge conditions, enabling reliable operation at TC ≥ +150°C.
Does DM6W43A-13 meet RoHS 3 and automotive ELV requirements?
Yes - DM6W43A-13 carries lead-free matte tin plating, contains <900 ppm bromine, <900 ppm chlorine, and <1000 ppm antimony, satisfying EU RoHS 3 Directive 2015/863/EU and End-of-Life Vehicle (ELV) compliance. Full material declarations and test reports are available upon request from Diodes Incorporated.
DM6W43A-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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218
DM6W43A-13 FAQ
1.How can I place an order for DM6W43A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM6W43A-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 DM6W43A-13 reliable?
The price and inventory of DM6W43A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM6W43A-13 is usually 5 days.
3.What payment methods are accepted for DM6W43A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM6W43A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM6W43A-13?
DM6W43A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM6W43A-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 DM6W43A-13?
For technical support, including DM6W43A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM6W43A-13 requirements.
6.How does Aetrix verify that DM6W43A-13 is sourced from the original manufacturer or authorized distributors?
All DM6W43A-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 DM6W43A-13 meets industry standards.
7.What is the process for return or replacement of DM6W43A-13?
All DM6W43A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM6W43A-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 DM6W43A-13 part is unused and in its original packaging.
Return procedure for DM6W43A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM6W43A-13 Tags
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