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Diodes Incorporated DM5W40AQ-13
- Part No.:
- DM5W40AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM5W40AQ-13.pdf
- Description:
- Transient Voltage Suppressor PP
- Quantity:
- Payment:
- Shipping:
Inventory:9,767
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Product details
Overview
DM5W40AQ-13 from Diodes Incorporated is a 3600W 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 40V reverse standoff voltage (VRWM), 64.5V max clamping voltage (VC) at 56A peak pulse current, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the DM5W40AQ-13 datasheet, DM5W40AQ-13 pinout, DM5W40AQ-13 application, or DM5W40AQ-13 equivalent, this device serves as a high-power, low-leakage, thermally robust TVS for 12V/24V automotive power rail protection where ISO16750-2 Pulse 5a compliance and IATF 16949 manufacturing traceability are required.
Technical Context
This unidirectional TVS diode operates with anode-connected heatsink polarity and delivers 3600W peak pulse power (10/1000µs waveform) while maintaining only 10µA max reverse leakage at VRWM and +25°C. Its 1.1°C/W junction-to-case thermal resistance enables stable operation up to +175°C junction temperature.
The device meets ISO 16750-2 Pulse 5a (load dump) and ISO 7637-2 Pulse 1, 2a, 3a, 3b surge immunity requirements. Breakdown voltage is specified at 44.4–49.1V (min/max) with 5mA test current, ensuring precise clamping behavior across production lots.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 40 V - Maximum continuous reverse operating voltage before significant conduction begins; sets system-level overvoltage trip threshold. |
| VBR (min/max) | 44.4 / 49.1 V - Breakdown occurs within this range at 5mA; ensures consistent turn-on timing across temperature and lot variation. |
| VC @ IPP | 64.5 V @ 56 A - Clamped voltage during 10/1000µs surge; determines maximum stress imposed on downstream circuitry. |
| PPK | 3600 W - Peak non-repetitive surge power handling; validates capability against worst-case ISO16750-2 load dump events. |
| RθJC | 1.1 °C/W - Low thermal resistance from junction to case; enables effective heat transfer to PCB copper or heatsink for sustained reliability. |
| TJ Range | −55 to +175 °C - Full automotive-grade operating temperature envelope; supports engine bay and transmission control unit placement. |
Pinout & Package
Package: DO-218 (Type E), molded plastic, UL 94V-0 rated, 2.74g weight. Heatsink tab is electrically connected to the anode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive surge current path | Primary thermal and electrical connection point; must be soldered to large copper area for thermal management and low-inductance surge return. |
| Cathode (Top Surface Pin) | Surge current sink | Connected to protected line (e.g., battery rail); clamps transients by conducting excess energy to ground/anode reference. |
Key Features
| Feature | Design Value |
|---|---|
| 3600W Peak Pulse Power | Validated for ISO16750-2 Pulse 5a load dump (up to 40V × 90A equivalent), enabling single-device protection without parallel stacking. |
| AEC-Q101 Qualified | Qualified per stress test conditions including HTOL, TC, UHAST, and ESD; supports PPAP documentation and IATF 16949 production traceability. |
| Low Thermal Resistance (1.1°C/W) | Enables >80% of rated power dissipation at TC = +100°C per derating curve; reduces need for oversized heatsinking in space-constrained modules. |
| RoHS & Halogen-Free | Meets EU RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb); compliant for global automotive supply chains. |
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 element placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤64.5V, preventing latch-up or gate oxide damage in 40V-rated power management ICs. |
Use Scenario: Shields LIN bus regulators and LED drivers from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling) events. IC Role / Device Role / Timing Role: Primary surge suppression device on 12V main rail upstream of LDOs and buck controllers. Use Value: Delivers 56A peak current handling with <10µA leakage at 40V, minimizing standby power loss in always-on modules. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera Power |
Use Scenario: Safeguards high-current solenoid drivers and position sensors exposed to cranking and load dump in automatic transmission systems. IC Role / Device Role / Timing Role: High-energy clamping component mounted directly on power entry connector PCB pad. Use Value: Maintains 175°C operational capability and 1.1°C/W RθJC, ensuring reliability during extended high-temperature gear-shifting cycles. |
Use Scenario: Protects image sensor power supplies and serializer ICs in rear-view and surround-view cameras subjected to vehicle-level EMC testing. IC Role / Device Role / Timing Role: Final-stage TVS on 12V camera module input, placed after EMI filter but before DC-DC conversion. Use Value: Provides 64.5V clamping with <10µA leakage at 40V, preserving low-noise performance and avoiding false triggers in analog video paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ40A | Lower PPK (400W), SMA package (RθJC ≈ 50°C/W), 64.5V VC same but at only 6.4A IPP. | Not suitable for ISO16750-2 load dump; limited to ISO7637-2 Pulse 1/2a in low-power modules. | Select when cost sensitivity outweighs surge rating needs and thermal budget allows higher junction rise. |
| SMCJ40A | Higher PPK (1500W), SMC package (RθJC ≈ 2.5°C/W), 64.5V VC at 23.3A IPP; no AEC-Q101 qualification. | Lacks automotive change control, PPAP support, and IATF 16949 traceability; requires requalification for OEM programs. | Use in industrial or commercial designs where AEC-Q101 is not mandated but higher surge margin than SMAJ is needed. |
Compared with SMAJ40A and SMCJ40A, DM5W40AQ-13 uniquely combines 3600W surge capacity, 1.1°C/W thermal resistance, and full AEC-Q101/PPAP/IATF 16949 compliance-making it the only qualified solution for high-reliability automotive load dump protection without thermal derating penalties.
Availability
DM5W40AQ-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, long-term automotive lifecycle support, and certified manufacturing traceability.
Supply support for DM5W40AQ-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 with design centers across Asia, Europe, and North America.
The DM5WxxAQ series belongs to Diodes' AEC-Q101-qualified automotive TVS portfolio, engineered specifically for ISO16750-2 and ISO7637-2 compliance in harsh-environment power rail protection-targeting under-hood and chassis-mounted electronic control units.
FAQ
What is the polarity configuration of DM5W40AQ-13?
The DM5W40AQ-13 is a unidirectional TVS diode with the heatsink tab serving as the anode (+) and the top-surface pin as the cathode (−). This configuration requires the heatsink to be connected to the positive side of the protected circuit-typically the battery rail-to enable proper clamping during positive-going transients.
Does DM5W40AQ-13 meet ISO16750-2 Pulse 5a requirements?
Yes-DM5W40AQ-13 is explicitly validated for ISO16750-2 Pulse 5a (load dump) with its 3600W peak pulse power rating and 64.5V clamping voltage at 56A. The device's 1.1°C/W RθJC and +175°C TJ rating ensure reliable operation under the high-energy, exponentially decaying 10ms waveform defined in the standard.
How does the DO-218 package improve thermal performance over SMA or SMC?
The DO-218 (Type E) package provides a direct metal heatsink interface with low thermal resistance (1.1°C/W), versus ~50°C/W for SMAJ and ~2.5°C/W for SMCJ. Its larger copper contact area and optimized internal die attach reduce junction temperature rise by >40°C at 3600W surge-critical for sustained reliability in engine bay environments.
Is DM5W40AQ-13 compatible with lead-free reflow processes?
Yes-DM5W40AQ-13 features matte tin-plated terminals rated for lead-free soldering per MIL-STD-202, Method 208, and complies with J-STD-020 moisture sensitivity level 1. Its UL 94V-0 molded plastic body withstands peak reflow temperatures up to 260°C, supporting standard Pb-free assembly without delamination or plating degradation.
DM5W40AQ-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):
- 56A
- Power - Peak Pulse:
- 3600W (3.6kW)
- 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
DM5W40AQ-13 FAQ
1.How can I place an order for DM5W40AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM5W40AQ-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 DM5W40AQ-13 reliable?
The price and inventory of DM5W40AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM5W40AQ-13 is usually 5 days.
3.What payment methods are accepted for DM5W40AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM5W40AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM5W40AQ-13?
DM5W40AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM5W40AQ-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 DM5W40AQ-13?
For technical support, including DM5W40AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM5W40AQ-13 requirements.
6.How does Aetrix verify that DM5W40AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM5W40AQ-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 DM5W40AQ-13 meets industry standards.
7.What is the process for return or replacement of DM5W40AQ-13?
All DM5W40AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM5W40AQ-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 DM5W40AQ-13 part is unused and in its original packaging.
Return procedure for DM5W40AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM5W40AQ-13 Tags
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