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Diodes Incorporated DM5W15A-13
- Part No.:
- DM5W15A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM5W15A-13.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:7,956
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Product details
Overview
DM5W15A-13 from Diodes Incorporated is a surface-mount transient voltage suppressor (TVS) diode designed for automotive load dump and ISO7637-2 surge protection. It features a 15 V reverse standoff voltage, 24.2 V max clamping voltage at 148 A peak pulse current, 3600 W 10/1000 µs peak pulse power, and DO-218 (Type E) package with anode-heatsink polarity. It is qualified to AEC-Q standards and used in 12 V automotive power rail protection.
For engineers reviewing the DM5W15A-13 datasheet, DM5W15A-13 pinout, DM5W15A-13 application, or DM5W15A-13 equivalent, key selection criteria include clamping voltage margin vs. system overvoltage tolerance, thermal resistance (1.1 °C/W junction-to-case), peak surge current capability (148 A), and compliance with ISO16750-2 load dump and ISO7637-2 Pulse 1/2a/3a/3b waveforms.
Technical Context
This unidirectional TVS diode operates as a clamping device in parallel with sensitive electronics on automotive DC power lines. Its low thermal resistance (1.1 °C/W) enables high-power transient energy dissipation without thermal runaway, while its 15 V VRWM ensures compatibility with nominal 12 V battery systems and sufficient margin above regulated bus voltage.
The device uses silicon avalanche breakdown to clamp transients within nanoseconds. Its 10/1000 µs waveform rating (3600 W) and 8.3 ms half-sine IFSM rating (500 A) reflect dual-stress capability - fast spikes and sustained load dump events - validated per ISO16750-2 Annex D and ISO7637-2 test profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 15 V - Maximum continuous reverse operating voltage before leakage exceeds 10 µA; sets upper limit for stable 12 V system operation. |
| VBR (min/max) | 16.7 V / 18.5 V - Breakdown occurs within this range at 5 mA test current; defines turn-on threshold consistency. |
| VC @ IPP | 24.2 V @ 148 A - Clamped voltage during 10/1000 µs surge; must stay below IC absolute maximum ratings of protected circuitry. |
| PPK | 3600 W - Peak pulse power handling for 10/1000 µs waveform; determines survivability against ISO7637-2 Pulse 5a load dump. |
| RθJC | 1.1 °C/W - Junction-to-case thermal resistance; enables effective heatsinking via PCB copper pour or metal-core board. |
| IFSM | 500 A - Non-repetitive forward surge current (8.3 ms half-sine); supports robustness against alternator-induced surges. |
| TJ Range | −55 °C to +175 °C - Extended temperature operation suitable for under-hood automotive environments. |
Pinout & Package
Package: DO-218 (Type E), surface-mount, molded plastic (UL 94V-0), anode-connected heatsink tab, 2.74 g weight. Polarity marked with cathode bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Current return path and thermal interface | Electrically connected to anode; must be soldered to large copper area for thermal management and low-inductance grounding. |
| Cathode (Top Surface Lead) | Transient current entry point | Connected to protected line (e.g., battery input); clamps positive transients by conducting to anode/heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| 3600 W peak pulse power | Enables single-device protection against ISO16750-2 load dump (up to 35 V, 100 ms exponential) when combined with appropriate thermal design. |
| Low clamping ratio (VC/VRWM = 1.61) | Minimizes overvoltage stress on downstream regulators and microcontrollers during surge events. |
| AEC-Q qualified reliability | Validated for automotive use including temperature cycling, humidity testing, and long-term life validation per JEDEC standards. |
| Lead-free, halogen-free "Green" construction | Complies with RoHS 3 (2015/863/EU) and automotive ELV directive; <900 ppm Br/Cl, <1000 ppm Sb. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Line |
|---|---|
Use Scenario: Protects 12 V supply input of engine control units exposed to alternator load dump and cranking transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed directly at ECU connector entry point, shunting surge energy to chassis ground. Use Value: Limits clamped voltage to 24.2 V, staying well below 36 V absolute max rating of typical automotive LDOs and MCUs. |
Use Scenario: Shields BCM power rail from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (battery disconnect) events. IC Role / Device Role / Timing Role: Fast-response parallel protector with <1 ns response time, placed upstream of input filter capacitors. Use Value: Withstands 148 A peak current while maintaining low thermal impedance, preventing latch-up or burnout during repeated pulses. |
| Infotainment Head Unit Power Supply | ADAS Camera Module Input Protection |
Use Scenario: Guards infotainment system's main 12 V input against jump-start induced reverse polarity and surge coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp in conjunction with reverse polarity MOSFET and LC filter. Use Value: 175 °C max junction temperature rating allows reliable operation near heat-generating processors and displays. |
Use Scenario: Safeguards 12 V input of radar or camera modules mounted near engine bay with minimal PCB space. IC Role / Device Role / Timing Role: Compact DO-218 footprint provides high power density (3600 W in 13.5 × 8.5 mm outline) for space-constrained ADAS designs. Use Value: Low 1.1 °C/W RθJC enables direct mounting to aluminum housing for passive cooling, eliminating need for active thermal management. |
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, VRWM = 15 V, VC = 24.4 V @ 17.3 A | Not suitable for load dump; limited to ISO7637-2 Pulse 1/2a only due to power/thermal limits | Select when cost sensitivity outweighs surge severity; requires derating above +70 °C ambient. |
| SMCJ15A | Higher PPK (1500 W), SMC package, RθJC ≈ 12 °C/W, VRWM = 15 V, VC = 24.4 V @ 61.5 A | Supports moderate load dump but fails ISO16750-2 full 35 V/100 ms requirement without external heatsink | Choose for mid-tier automotive modules where space allows larger SMC footprint and thermal vias are feasible. |
Compared with SMAJ15A and SMCJ15A, DM5W15A-13 delivers 2.4× higher peak power than SMCJ15A and 9× more than SMAJ15A in the same voltage class, with superior thermal performance enabling standalone load dump protection without auxiliary cooling.
Availability
DM5W15A-13 is available at Aetrix Electronics and suitable for automotive ECU power protection, body control module surge suppression, infotainment system input hardening, and ADAS camera module front-end protection requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for DM5W15A-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.
DM5W15A-13 belongs to Diodes' automotive-grade TVS portfolio engineered specifically for ISO16750-2 and ISO7637-2 compliance, emphasizing high-power clamping, AEC-Q qualification, and thermally robust packaging for under-hood deployment.
FAQ
What is the maximum clamping voltage of DM5W15A-13 under standard test conditions?
The maximum clamping voltage (VC) is 24.2 V at a peak pulse current (IPP) of 148 A using the 10/1000 µs waveform. This value is measured per JEDEC-standard test conditions and represents the worst-case voltage seen by downstream circuitry during a defined surge event.
Is DM5W15A-13 suitable for bidirectional surge protection?
No - DM5W15A-13 is a unidirectional TVS diode with anode-heatsink polarity. It protects against positive transients only. For bidirectional protection (e.g., data lines or AC-coupled rails), a dedicated bidirectional TVS such as DM5W15CA-13 must be used.
How does the DO-218 package improve thermal performance over SMA or SMC packages?
The DO-218 (Type E) package integrates the anode directly into a large metal heatsink tab, achieving 1.1 °C/W junction-to-case thermal resistance - over 10× better than SMA and ~10× better than SMC. This allows direct PCB copper pour conduction and eliminates reliance on trace-based heat spreading.
Does DM5W15A-13 require derating at elevated ambient temperatures?
Yes - the 3600 W PPK rating applies only at TA = +25°C. Power must be linearly derated above +25°C per the published derating curve (Fig. 1), reaching ~2800 W at +125°C case temperature. Designers must calculate actual TC using PCB thermal modeling and ensure TJ remains ≤ +175°C.
DM5W15A-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):
- 148A
- 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
DM5W15A-13 FAQ
1.How can I place an order for DM5W15A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM5W15A-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 DM5W15A-13 reliable?
The price and inventory of DM5W15A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM5W15A-13 is usually 5 days.
3.What payment methods are accepted for DM5W15A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM5W15A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM5W15A-13?
DM5W15A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM5W15A-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 DM5W15A-13?
For technical support, including DM5W15A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM5W15A-13 requirements.
6.How does Aetrix verify that DM5W15A-13 is sourced from the original manufacturer or authorized distributors?
All DM5W15A-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 DM5W15A-13 meets industry standards.
7.What is the process for return or replacement of DM5W15A-13?
All DM5W15A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM5W15A-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 DM5W15A-13 part is unused and in its original packaging.
Return procedure for DM5W15A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM5W15A-13 Tags
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