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Diodes Incorporated DM5W14A-13
- Part No.:
- DM5W14A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM5W14A-13.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:3,573
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Product details
Overview
DM5W14A-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 14 V reverse standoff voltage (VRWM), 15.6–17.2 V breakdown voltage (VBR), 23.2 V clamping voltage (VC) at 155 A peak pulse current, and 3600 W peak pulse power dissipation (10/1000 µs). It is qualified to AEC-Q standards and housed in a DO-218 (Type E) package for high-reliability under-hood applications.
For engineers reviewing the DM5W14A-13 datasheet, DM5W14A-13 pinout, DM5W14A-13 application, or DM5W14A-13 equivalent, this page delivers verified electrical parameters, thermal resistance (RθJC = 1.1 °C/W), polarity configuration (heatsink = anode), ISO16750-2 compliance, and real-world automotive circuit protection context - all critical for robust power rail hardening in 12 V vehicle systems.
Technical Context
This unidirectional TVS diode operates as a clamping device across DC power rails, activating when transient voltage exceeds its 14 V standoff threshold. Its low clamping ratio (VC/VRWM ≈ 1.66) and 1.1 °C/W junction-to-case thermal resistance enable rapid energy diversion during 10 ms exponential load dump surges up to 3600 W without thermal runaway.
The DO-218 package integrates a large copper heatsink directly bonded to the anode terminal, supporting 500 A non-repetitive forward surge current (IFSM) and stable operation from –55 °C to +175 °C. Polarity is marked with a bar indicating cathode; the heatsink serves as the anode connection point for optimal thermal and electrical path integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; matches nominal 12 V automotive battery systems with margin. |
| VBR @ IT=5 mA | 15.6–17.2 V - Breakdown onset range; ensures reliable triggering above normal transients but below system overvoltage thresholds. |
| VC @ IPP=155 A | 23.2 V - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to safe levels during ISO7637-2 Pulse 5a events. |
| PPK (10/1000 µs) | 3600 W - Peak pulse power handling capacity; sustains single high-energy load dump surges without failure. |
| RθJC | 1.1 °C/W - Low thermal resistance enables efficient heat transfer to PCB/heatsink; critical for sustained surge duty cycles. |
| TJ Range | –55 to +175 °C - Full automotive temperature qualification; supports engine bay placement without derating. |
| IFSM (8.3 ms) | 500 A - Forward surge rating; accommodates high-current inrush or short-circuit fault conditions in power distribution networks. |
Pinout & Package
Package: DO-218 (Type E), surface-mount, molded plastic (UL 94V-0), with integrated heatsink terminal. Anode connected to heatsink; cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Power return path / thermal interface | Electrically and thermally coupled to PCB copper pour; must be soldered to ≥250 mm² thermal pad for rated PPK performance. |
| Cathode (Top Marked Bar) | Transient voltage sensing and clamping node | Connected to protected line (e.g., battery feed); conducts surge current to anode when VRWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| 3600 W peak pulse power | Enables single-event suppression of worst-case ISO16750-2 load dump (up to 35 V, 10 ms) without degradation. |
| Low RθJC (1.1 °C/W) | Reduces junction temperature rise by >40% vs. standard SMA packages, extending lifetime under repeated surge stress. |
| AEC-Q qualified | Validated for automotive use per JEDEC reliability standards - including HTOL, TC, UHAST - ensuring field longevity. |
| Halogen- and antimony-free "Green" construction | Meets RoHS 3 (2015/863/EU) with <900 ppm Br/Cl and <1000 ppm Sb; supports OEM environmental compliance programs. |
| DO-218 mechanical robustness | Withstands 50 g vibration and thermal cycling (–55/+175 °C, 1000 cycles) without bond wire fatigue or delamination. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
|
Use Scenario: Protects microcontroller, CAN transceivers, and analog sensors from alternator load dump surges during ignition-off transitions. IC Role / Device Role: Primary clamping element on main 12 V input rail upstream of DC-DC converters. Use Value: Limits transient voltage to ≤23.2 V, preventing latch-up or oxide breakdown in 3.3 V/5 V logic supplies derived from the rail. |
Use Scenario: Shields LIN bus transceivers, door lock actuators, and lighting drivers from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump). IC Role / Device Role: Unidirectional TVS placed between battery feed and local LDO/regulator input. Use Value: Absorbs 155 A peak current while maintaining clamping voltage below 24 V - within absolute maximum ratings of automotive-grade regulators. |
| ADAS Camera Power Supply | Infotainment Head Unit Main Rail |
|
Use Scenario: Safeguards image sensor and SerDes ICs in rear-view or surround-view cameras exposed to under-hood EMI and load transients. IC Role / Device Role: First-line transient suppressor on fused 12 V camera module input, before filtering and regulation. Use Value: 1.1 °C/W thermal resistance prevents thermal shutdown during consecutive surges, ensuring uninterrupted video stream integrity. |
Use Scenario: Secures processor, audio codec, and display driver power inputs against jump-start spikes and alternator ripple anomalies. IC Role / Device Role: High-power TVS on main battery input to infotainment power management IC (PMIC). Use Value: 3600 W rating handles 10 ms exponential load dump waveforms without parameter shift - preserving PMIC enable timing and reset behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A | Lower PPK (400 W), SMA package, RθJC ≈ 50 °C/W, VRWM = 14 V, VC = 23.2 V @ 17.3 A | Rated only for ISO7637-2 Pulse 1/2a/3; insufficient for ISO16750-2 load dump | Select when space-constrained and surge energy is limited to <500 W; not suitable for direct battery rail protection. |
| SMCJ14A | PPK = 1500 W, SMC package, RθJC ≈ 3.5 °C/W, same VRWM/VC, IFSM = 200 A | Supports moderate load dump but fails at full 3600 W; derates significantly above +100 °C | Use where cost is prioritized over AEC-Q qualification and full load dump margin; requires larger thermal pad than DO-218. |
Compared with SMAJ14A and SMCJ14A, DM5W14A-13 delivers 2.4× higher surge energy capacity and 3.2× lower thermal resistance, enabling direct integration into high-reliability 12 V automotive power domains without external heatsinking or parallel devices.
Availability
DM5W14A-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and infotainment head units requiring stable component supply across extended automotive production lifecycles.
Supply support for DM5W14A-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
This device belongs to Diodes' automotive-qualified TVS portfolio, engineered specifically for ISO16750-2 and ISO7637-2 compliance in harsh 12 V vehicle electrical systems - emphasizing thermal robustness, surge repeatability, and long-term parametric stability.
FAQ
What is the polarity configuration of DM5W14A-13?
The DM5W14A-13 is a unidirectional TVS diode with the heatsink serving as the anode terminal and the top-surface bar marking indicating the cathode. This configuration requires the heatsink to be connected to ground or the lower-potential side of the protected line to ensure proper clamping action during positive transients.
Can DM5W14A-13 replace DM5W14AQ in automotive designs?
No - DM5W14AQ is the AEC-Q200-qualified variant with additional stress testing (e.g., board-level thermal cycling, bias-HAST). While DM5W14A-13 meets AEC-Q reliability standards per Diodes' internal qualification, DM5W14AQ carries formal certification required by Tier 1 OEMs for safety-critical applications.
What PCB layout practices maximize thermal performance?
To achieve rated 3600 W pulse handling, the DO-218 anode (heatsink) must be soldered to a minimum 250 mm² copper area on the primary board layer, with ≥4 thermal vias (0.3 mm diameter, filled) connecting to inner/ground planes. Avoid solder mask over the heatsink pad to ensure full thermal contact.
How does DM5W14A-13 perform under repeated surge stress?
Per Figure 2 of DS40426, DM5W14A-13 maintains full 3600 W capability at TC = +25 °C, derating linearly to ~2000 W at TC = +125 °C. For repetitive 10/1000 µs pulses, duty cycle must remain ≤4 pulses/minute to prevent cumulative junction temperature rise beyond 175 °C.
DM5W14A-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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 155A
- 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
DM5W14A-13 FAQ
1.How can I place an order for DM5W14A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM5W14A-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 DM5W14A-13 reliable?
The price and inventory of DM5W14A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM5W14A-13 is usually 5 days.
3.What payment methods are accepted for DM5W14A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM5W14A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM5W14A-13?
DM5W14A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM5W14A-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 DM5W14A-13?
For technical support, including DM5W14A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM5W14A-13 requirements.
6.How does Aetrix verify that DM5W14A-13 is sourced from the original manufacturer or authorized distributors?
All DM5W14A-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 DM5W14A-13 meets industry standards.
7.What is the process for return or replacement of DM5W14A-13?
All DM5W14A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM5W14A-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 DM5W14A-13 part is unused and in its original packaging.
Return procedure for DM5W14A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM5W14A-13 Tags
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