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Diodes Incorporated DM6W40AQ-13
- Part No.:
- DM6W40AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM6W40AQ-13.pdf
- Description:
- Transient Voltage Suppressor PP
- Quantity:
- Payment:
- Shipping:
Inventory:8,805
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Product details
Overview
DM6W40AQ-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), 40V reverse standoff voltage (VRWM), 64.5V max clamping voltage at 71A IPP, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the DM6W40AQ-13 datasheet, DM6W40AQ-13 pinout, DM6W40AQ-13 application, or DM6W40AQ-13 equivalent, this device serves as a high-reliability, thermally robust TVS for 12V/24V automotive power rail protection where low clamping voltage, high surge current tolerance, and IATF 16949-manufactured consistency are critical.
Technical Context
This unidirectional TVS diode operates with anode-connected heatsink polarity and delivers precise overvoltage clamping during fast transients-such as ISO16750-2 Pulse 5a (load dump) and ISO7637-2 Pulse 1/2a/3a/3b. Its 1.0°C/W junction-to-case thermal resistance enables effective power dissipation at elevated ambient temperatures up to +175°C.
The device exhibits low leakage (<10µA at VRWM), tight VBR tolerance (44.4–49.1V @ 5mA), and stable performance across temperature due to optimized silicon junction design. Its DO-218 package provides mechanical robustness and solderable matte tin terminals compliant with MIL-STD-202.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 4600W (10/1000µs waveform); sustains automotive load-dump surges without failure |
| Reverse Standoff Voltage | 40V (VRWM); blocks normal 12V/24V system voltages while remaining inactive |
| Clamping Voltage | 64.5V @ 71A IPP; limits downstream IC voltage stress during worst-case transients |
| Breakdown Voltage | 44.4–49.1V @ 5mA IT; ensures reliable turn-on margin above VRWM |
| Junction-to-Case Thermal Resistance | 1.0°C/W; enables efficient heat transfer to PCB copper or heatsink for sustained operation |
| Operating Temperature Range | −55°C to +175°C; qualified for engine bay and transmission control unit environments |
| AEC-Q101 Qualified | Yes; validated for automotive use with PPAP capability and IATF 16949 manufacturing |
Pinout & Package
DO-218 (Type E) surface-mount package with integrated heatsink; anode terminal connected to heatsink base, cathode marked by bar on top surface. Weight: 2.74g. UL 94V-0 molded plastic body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (+) | Heatsink connection | Primary thermal path; must be soldered to large copper area or external heatsink |
| Cathode (−) | Transient current return path | Connected to protected line (e.g., battery rail); carries full surge current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| 4600W Peak Pulse Power | Handles ISO16750-2 load-dump energy (up to 1000J) without degradation in single-event testing |
| Low Clamping Ratio (VC/VRWM = 1.61) | Minimizes overvoltage stress on downstream DC-DC converters and microcontrollers |
| 1.0°C/W RθJC | Enables >5W steady-state dissipation at TC = +25°C; supports high-power transient duty cycles |
| AEC-Q101 & IATF 16949 Compliance | Guarantees production traceability, change control, and zero-defect quality for automotive OEMs |
| Lead-Free, Halogen-Free "Green" Construction | Meets RoHS 3 (2015/863/EU) and automotive environmental requirements without compromising reliability |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects 5V/3.3V LDO regulators and MCU power inputs from alternator load-dump spikes during ignition-off events. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and input filter capacitor. Use Value: Limits transient voltage to ≤64.5V, preventing regulator latch-up and MCU brownout during 12V system surges. |
Use Scenario: Shields CAN transceivers, LIN drivers, and power management ICs from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive discharge). IC Role / Device Role / Timing Role: Primary front-end surge suppression on 12V supply before local DC-DC conversion. Use Value: Maintains <10µA leakage at 40V, ensuring low quiescent current in always-on BCM sleep modes. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera Power |
Use Scenario: Safeguards high-current solenoid drivers and position sensor interfaces against repetitive load-dump events in hot under-hood environments. IC Role / Device Role / Timing Role: Thermally anchored TVS with heatsink connection to chassis ground plane. Use Value: Sustains operation at TJ = +175°C with <1% parameter drift, enabling TCU placement near engine block. |
Use Scenario: Secures 12V-to-5V/3.3V power conversion for rear-view and surround-view cameras exposed to vehicle-level surges. IC Role / Device Role / Timing Role: First-line protection before buck converter input capacitor. Use Value: Achieves 71A peak surge current handling with 64.5V clamping, preserving image sensor functionality during jump-start events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ40A | Lower PPK (400W), SMA package, RθJC ≈ 50°C/W, no AEC-Q101 qualification | Not suitable for automotive load-dump; limited to industrial/commercial board-level protection | Select only for non-automotive, low-energy transient environments with space-constrained layouts |
| SMCJ40A | PPK = 1500W, SMC package, RθJC ≈ 12°C/W, AEC-Q101 optional (not standard) | Lacks DO-218 thermal performance; insufficient for repeated load-dump cycling in engine bay | Acceptable for cost-sensitive BCM designs where single-pulse ISO7637-2 compliance suffices |
Compared with SMAJ40A and SMCJ40A, DM6W40AQ-13 delivers 3× higher surge power handling, 50× lower thermal resistance, and factory-certified automotive qualification-making it the only choice for production-grade 12V/24V load-dump protection requiring long-term reliability and thermal stability.
Availability
DM6W40AQ-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, transmission control units, and ADAS camera power systems requiring stable component supply, automotive-grade traceability, and guaranteed lifecycle continuity.
Supply support for DM6W40AQ-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.
The DM6WxxAQ series belongs to Diodes' AEC-Q101-qualified TVS portfolio, engineered specifically for automotive power rail surge immunity-balancing ultra-low clamping voltage, high thermal efficiency, and rigorous process control for under-hood deployment.
FAQ
What is the maximum clamping voltage of DM6W40AQ-13 at its rated peak pulse current?
The maximum clamping voltage (VC) is 64.5V at 71A peak pulse current (IPP), measured using the 10/1000µs standard waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range (−55°C to +175°C) and defines the upper voltage limit imposed on protected circuitry during surge events.
Can DM6W40AQ-13 be used in 24V commercial vehicle systems?
Yes-its 40V VRWM and 64.5V clamping voltage provide appropriate margin for nominal 24V systems (typically 20–28V operating range). The device meets ISO16750-2 Pulse 5a requirements up to 35V test voltage and has been validated for dual-voltage platforms including heavy-duty truck ECUs and bus control modules.
Is the DO-218 package compatible with standard reflow profiles?
Yes-the DO-218 (Type E) package uses matte tin-plated terminals and is rated for lead-free reflow per J-STD-020. Recommended peak temperature is 260°C for ≤30 seconds; the 2.74g mass and thermal mass distribution support uniform heating without tombstoning or voiding when using recommended pad layout (X=3.50mm, Y=3.00mm, Y2=15.80mm).
Does DM6W40AQ-13 require derating at elevated ambient temperatures?
Yes-power derating begins above +25°C case temperature. Per Figure 1 in DS41001 Rev. 7-2, PM(AV) drops linearly to 0W at +150°C TC. At +100°C TC, steady-state power dissipation is reduced to ~3.0W. Designers must calculate thermal resistance from PCB copper area to ensure TJ remains ≤+175°C under worst-case surge repetition.
DM6W40AQ-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):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 71A
- 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
DM6W40AQ-13 FAQ
1.How can I place an order for DM6W40AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM6W40AQ-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 DM6W40AQ-13 reliable?
The price and inventory of DM6W40AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM6W40AQ-13 is usually 5 days.
3.What payment methods are accepted for DM6W40AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM6W40AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM6W40AQ-13?
DM6W40AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM6W40AQ-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 DM6W40AQ-13?
For technical support, including DM6W40AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM6W40AQ-13 requirements.
6.How does Aetrix verify that DM6W40AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM6W40AQ-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 DM6W40AQ-13 meets industry standards.
7.What is the process for return or replacement of DM6W40AQ-13?
All DM6W40AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM6W40AQ-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 DM6W40AQ-13 part is unused and in its original packaging.
Return procedure for DM6W40AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM6W40AQ-13 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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