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Diodes Incorporated DM8W15A-13
- Part No.:
- DM8W15A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W15A-13.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:4,887
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Product details
Overview
DM8W15A-13 from Diodes Incorporated is a unidirectional surface-mount transient voltage suppressor (TVS) designed for automotive load dump and ISO 7637-2 surge protection in high-reliability power line applications. It features a 15 V reverse standoff voltage (VRWM), 24.4 V maximum clamping voltage (VC) at 270 A peak pulse current (IPP), and 6600 W peak pulse power dissipation (10/1000 µs waveform).
For engineers reviewing the DM8W15A-13 datasheet, DM8W15A-13 pinout, DM8W15A-13 application, or DM8W15A-13 equivalent, this device serves as a primary overvoltage clamp on 12 V automotive battery rails-especially where high-temperature stability (TJ = −55°C to +175°C), ISO16750-2 Pulse A/B compliance, and lead-free RoHS/Green qualification are mandatory.
Technical Context
This TVS diode operates exclusively in unidirectional mode with anode connected to heatsink (cathode marked by bar). Its clamping behavior is defined under standardized 10/1000 µs exponential surge waveforms, delivering predictable voltage limiting during load dump events up to 6600 W at TC = +25°C.
Thermal performance is governed by RθJC = 0.9 °C/W and derated linearly above +25°C case temperature (Fig. 1), supporting sustained operation at TJ = +175°C. Capacitance is low (CT ≈ 1000 pF at VR = 0 V, f = 1 MHz), minimizing signal distortion in DC power rail protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; matches nominal 12 V automotive system with margin for transients. |
| VBR (min/max) | 16.7 V / 18.5 V - Breakdown occurs within this band at 5 mA test current; ensures reliable turn-on before damaging overvoltage. |
| VC @ IPP | 24.4 V at 270 A - Clamped voltage during worst-case 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPK | 6600 W - Peak non-repetitive surge power handling capability; meets ISO16750-2 Load Dump requirements. |
| IFSM | 700 A - Single half-sine surge current rating (8.3 ms); supports high-energy transient absorption without failure. |
| TJ Range | −55°C to +175°C - Extended junction temperature range enables under-hood deployment without derating penalties. |
| RθJC | 0.9 °C/W - Low thermal resistance from junction to case; enables efficient heat transfer to PCB copper or heatsink. |
Pinout & Package
Package: DO-218 (Type E) molded plastic case with UL 94V-0 flammability rating, 2.74 g mass, and matte tin–plated terminals. Polarity indicator: bar denotes cathode; heatsink side is anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Side) | Positive terminal for unidirectional clamping | Connected to protected power rail (e.g., battery+); must be thermally coupled to PCB copper pour or external heatsink. |
| Cathode (Bar-Marked Side) | Clamping output terminal | Connected to ground or low-impedance return path; carries full surge current during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| 6600 W peak pulse power | Enables single-device protection against ISO16750-2 Load Dump surges without parallel stacking or external limiting. |
| Junction temperature rating up to +175°C | Supports direct placement near hot engine control units (ECUs) without thermal derating or forced cooling. |
| DO-218 package with 0.9 °C/W RθJC | Delivers superior thermal performance vs. SMB/SMA packages; reduces thermal interface complexity in space-constrained modules. |
| Lead-free, halogen-free, RoHS 3 & AEC-Q qualified | Fulfills automotive OEM Tier-1 sourcing mandates and environmental compliance for production vehicles. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects microcontroller, CAN transceivers, and analog sensors from load dump surges during alternator regulation failure. IC Role / Device Role / Timing Role: Primary unidirectional clamping element on 12 V main input rail, placed upstream of DC-DC converters. Use Value: Limits clamped voltage to 24.4 V at 270 A, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V regulators and logic ICs. |
Use Scenario: Shields lighting drivers, window motor controllers, and LIN transceivers from ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling). IC Role / Device Role / Timing Role: Fast-response TVS placed at BCM main power entry point, adjacent to fuse block. Use Value: Absorbs 6600 W transient energy within 1000 µs, maintaining system uptime during repeated surge events in vehicle lifecycle testing. |
| Advanced Driver Assistance System (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver |
Use Scenario: Safeguards image sensor supply and serializer ICs from battery line transients induced by nearby solenoid actuation or ignition noise. IC Role / Device Role / Timing Role: Secondary overvoltage clamp after primary LC filter, ensuring clean 12 V input to camera module PMIC. Use Value: Low 1000 pF capacitance avoids signal integrity degradation on high-speed MIPI CSI-2 clock/data lines sharing same PCB layer. |
Use Scenario: Protects H-bridge gate drivers and current sense amplifiers from inductive kickback during EPS motor commutation faults. IC Role / Device Role / Timing Role: High-current TVS integrated into motor driver PCB's power distribution network, thermally anchored to copper plane. Use Value: Withstands 700 A IFSM (8.3 ms half-sine), surviving multiple fault cycles without parametric shift or catastrophic failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Lower PPK (400 W), SMA package, RθJC ≈ 50 °C/W, TJ max = +150°C | Limited to low-energy surges (ISO 7637-2 Pulse 3a only); unsuitable for load dump or high-temp under-hood use. | Select only for cost-sensitive non-automotive 12 V systems with <500 W surge exposure and ambient <+85°C. |
| SMCJ15A | PPK = 1500 W, SMC package, RθJC ≈ 12 °C/W, TJ max = +175°C, same VRWM/VC | Meets ISO 7637-2 Pulse 1/2a/3 but fails ISO16750-2 Load Dump due to insufficient energy capacity. | Use where board space allows larger SMC footprint and thermal management is feasible-but not for direct load dump replacement. |
Compared with SMAJ15A and SMCJ15A, DM8W15A-13 delivers 4.4× and 4.4× higher peak power respectively, with 55× and 13× lower thermal resistance-enabling single-device, drop-in-capable protection for full automotive load dump compliance without redesigning thermal layout.
Availability
DM8W15A-13 is available at Aetrix Electronics and suitable for automotive ECU power input, body control module battery rail, ADAS camera power, and electric power steering motor driver applications requiring stable component supply across extended temperature and high-reliability environments.
Supply support for DM8W15A-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 protection, power management, and signal integrity solutions for automotive, industrial, and computing markets.
DM8W15A-13 belongs to Diodes' high-power DO-218 TVS family engineered specifically for ISO16750-2 and ISO7637-2-compliant automotive power rail protection-prioritizing thermal robustness, surge energy capacity, and AEC-Q reliability over general-purpose surge suppression.
FAQ
What is the polarity configuration of DM8W15A-13?
DM8W15A-13 is unidirectional only, with anode connected to the heatsink side (marked by circle) and cathode on the bar-marked side. This configuration enables forward-biased conduction during positive surges on the power rail, clamping to ground. It cannot be used for bidirectional protection or AC line applications.
Can DM8W15A-13 replace SMAJ15A in existing designs?
No-DM8W15A-13 uses DO-218 packaging with different pad layout, thermal anchoring requirements, and 6600 W surge rating versus SMAJ15A's 400 W. Direct replacement would require PCB redesign, thermal validation, and requalification per ISO16750-2. It is not a drop-in substitute.
How does DM8W15A-13 perform at elevated temperatures?
At TJ = +175°C, DM8W15A-13 maintains full 15 V VRWM and 24.4 V VC ratings, with leakage current limited to 150 µA. Its 0.9 °C/W RθJC and derating curve (Fig. 1) allow 8 W steady-state dissipation at TC = +25°C, scaling linearly to ~4.5 W at TC = +125°C.
Is DM8W15A-13 qualified for automotive production use?
Yes-DM8W15A-13 is manufactured to AEC-Q200 stress test standards for passive components and complies with ISO16750-2 (Pulse A/B) and ISO7637-2 (Pulse 1/2a/3a/3b). An automotive-grade variant (DM8W15AQ-13) is also available with additional PPAP documentation.
DM8W15A-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-218AB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 270A
- Power - Peak Pulse:
- 6600W (6.6kW)
- 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
DM8W15A-13 FAQ
1.How can I place an order for DM8W15A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W15A-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 DM8W15A-13 reliable?
The price and inventory of DM8W15A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W15A-13 is usually 5 days.
3.What payment methods are accepted for DM8W15A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W15A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W15A-13?
DM8W15A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W15A-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 DM8W15A-13?
For technical support, including DM8W15A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W15A-13 requirements.
6.How does Aetrix verify that DM8W15A-13 is sourced from the original manufacturer or authorized distributors?
All DM8W15A-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 DM8W15A-13 meets industry standards.
7.What is the process for return or replacement of DM8W15A-13?
All DM8W15A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W15A-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 DM8W15A-13 part is unused and in its original packaging.
Return procedure for DM8W15A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W15A-13 Tags
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