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Diodes Incorporated DM6W40A-13
- Part No.:
- DM6W40A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM6W40A-13.pdf
- Description:
- Transient Voltage Suppressor PP
- Quantity:
- Payment:
- Shipping:
Inventory:7,649
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Product details
Overview
DM6W40A-13 from Diodes Incorporated is a 4600W surface-mount transient voltage suppressor (TVS) diode designed for automotive load dump and ISO7637-2 surge protection in high-reliability power rail applications. It features a 40V reverse standoff voltage (VRWM), 44.4–49.1V breakdown voltage (VBR), 64.5V clamping voltage (VC) at 71A peak pulse current, and operates from –55°C to +175°C.
For engineers reviewing the DM6W40A-13 datasheet, DM6W40A-13 pinout, DM6W40A-13 application, or DM6W40A-13 equivalent, this device serves as a primary overvoltage clamp on 24V/36V battery rails in engine control units, ADAS modules, and body electronics where high-temperature stability and ISO16750-2 compliance are mandatory.
Technical Context
This unidirectional TVS diode uses a planar junction structure in a DO-218 (Type E) package with anode-connected heatsink configuration. Its 1.0°C/W junction-to-case thermal resistance enables sustained 6W average power dissipation at TC = +25°C while maintaining clamping performance under 10/1000µs and 10ms exponential load dump waveforms.
The device meets AEC-Q200 stress test requirements and delivers <10µA reverse leakage at VRWM and <250µA at TJ = +175°C. Its low thermal resistance and high IFSM rating (600A, 8.3ms half-sine) support robust protection against repetitive surges without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 4600W (10/1000µs waveform; defines maximum single-event surge energy absorption) |
| Reverse Standoff Voltage | 40V (maximum continuous DC operating voltage before clamping initiates) |
| Clamping Voltage | 64.5V at 71A (voltage seen by protected circuit during worst-case 10/1000µs surge) |
| Junction-to-Case Thermal Resistance | 1.0°C/W (enables efficient heat transfer to PCB copper or heatsink for sustained 6W operation) |
| Operating Temperature Range | –55°C to +175°C (supports under-hood deployment in automotive ECUs and powertrain systems) |
| Surge Standards Compliance | ISO 7637-2 (Pulse 1, 2a, 3a, 3b) and ISO 16750-2 (load dump); validated per datasheet test conditions |
Pinout & Package
Package: DO-218 (Type E), surface-mount, molded plastic housing with UL 94V-0 flammability rating. Anode terminal connected to heatsink tab; cathode marked by bar symbol on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive connection to protected power rail | Primary thermal path; must be soldered to ≥200 mm² copper pour for rated 6W dissipation |
| Cathode (Top Marked Pin) | Ground reference / surge return path | Connected to chassis or system ground; carries full surge current during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature stability | Rated operation up to +175°C junction temperature; <250µA leakage at max TJ ensures reliability in under-hood environments |
| Low thermal resistance | 1.0°C/W RθJC enables direct mounting to PCB copper for passive cooling-no external heatsink required for 6W steady-state |
| Automotive-grade qualification | AEC-Q200 qualified; RoHS 3 and halogen-free ("Green") compliant per Diodes' definitions (Br+Cl <1500ppm, Sb <1000ppm) |
| ISO-compliant surge handling | Validated for ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a (battery disconnect), and ISO 16750-2 load dump (120V, 10ms exponential) |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Protection of 24V supply input against alternator load dump transients during battery disconnection. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC converter input. Use Value: Limits voltage to ≤64.5V during 120V/10ms load dump events, preventing damage to downstream PMICs and microcontrollers. |
Use Scenario: Surge suppression on camera module power lines exposed to vehicle-level ESD and switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 36V auxiliary rail feeding radar and vision processors. Use Value: Withstands 4600W peak pulses while maintaining <10µA leakage at 40V, preserving signal integrity and low-power sleep modes. |
| Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Input protection for LIN bus transceivers and window motor drivers subjected to ISO 7637-2 Pulse 3b (capacitive coupling). IC Role / Device Role / Timing Role: Fast-response TVS on 12V/24V distribution nodes feeding multiple subsystems. Use Value: Clamps within nanoseconds to protect sensitive analog front-ends and logic interfaces without affecting normal 40V rail operation. |
Use Scenario: Overvoltage safeguard on high-current motor drive power stage inputs during regenerative braking surges. IC Role / Device Role / Timing Role: High-energy clamp parallel to MOSFET half-bridge supply rail. Use Value: Handles 600A 8.3ms forward surge without failure, ensuring uninterrupted torque delivery during transient overload conditions. |
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 peak power (400W), DO-214AC package, 1.5°C/W RθJC, 64.5V VC @ 43.5A | Rated for lower-energy surges (e.g., ESD, data line protection); unsuitable for ISO16750-2 load dump | Select when cost-sensitive consumer applications require basic surge immunity without automotive qualification. |
| SMCJ40A | Same 40V VRWM but 1500W peak power, DO-214AB package, 2.0°C/W RθJC, 64.5V VC @ 23.3A | Limited to moderate-energy transients (e.g., ISO7637-2 Pulse 1 only); cannot sustain load dump duty cycle | Choose for industrial control panels where ambient temperature stays below +105°C and surge repetition is infrequent. |
Compared with SMAJ40A and SMCJ40A, DM6W40A-13 delivers 3× higher peak power and 2.5× better thermal resistance-enabling reliable protection in automotive under-hood locations where sustained 6W dissipation and 175°C operation are non-negotiable.
Availability
DM6W40A-13 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, body electronics modules, and electric power steering systems requiring stable component supply across extended automotive lifecycles.
Supply support for DM6W40A-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 protection, power management, and signal integrity solutions for automotive, industrial, and computing markets.
DM6W40A-13 belongs to Diodes' automotive-qualified TVS portfolio, engineered specifically for ISO16750-2 load dump and ISO7637-2 surge immunity in harsh-environment power systems-prioritizing thermal robustness and long-term parametric stability.
FAQ
What is the maximum clamping voltage of DM6W40A-13 under standard test conditions?
The clamping voltage (VC) is 64.5V at 71A peak pulse current using a 10/1000µs waveform, measured per JEDEC-standard test methods. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events.
Can DM6W40A-13 be used in bidirectional configurations?
No-DM6W40A-13 is a unidirectional TVS diode with anode-connected heatsink and cathode-marked terminal. Bidirectional operation requires two devices in series opposition or a dedicated bidirectional part such as DM6W40CA-13, which is not pin-compatible.
How does the DO-218 package improve thermal performance versus DO-214AB?
The DO-218 (Type E) package provides a direct metal heatsink tab with 1.0°C/W junction-to-case thermal resistance-2.0× lower than DO-214AB's typical 2.0°C/W. This allows 6W steady-state dissipation at TC = +25°C without derating, critical for under-hood automotive placement.
Is DM6W40A-13 compliant with AEC-Q200 for automotive use?
Yes-DM6W40A-13 is qualified to AEC-Q200 Rev D stress test requirements for discrete semiconductors. Full qualification documentation, including temperature cycling, humidity testing, and mechanical shock results, is available in Diodes' product definitions portal.
DM6W40A-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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218
DM6W40A-13 FAQ
1.How can I place an order for DM6W40A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM6W40A-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 DM6W40A-13 reliable?
The price and inventory of DM6W40A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM6W40A-13 is usually 5 days.
3.What payment methods are accepted for DM6W40A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM6W40A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM6W40A-13?
DM6W40A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM6W40A-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 DM6W40A-13?
For technical support, including DM6W40A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM6W40A-13 requirements.
6.How does Aetrix verify that DM6W40A-13 is sourced from the original manufacturer or authorized distributors?
All DM6W40A-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 DM6W40A-13 meets industry standards.
7.What is the process for return or replacement of DM6W40A-13?
All DM6W40A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM6W40A-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 DM6W40A-13 part is unused and in its original packaging.
Return procedure for DM6W40A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM6W40A-13 Tags
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