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Diodes Incorporated DM5W12A-13
- Part No.:
- DM5W12A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM5W12A-13.pdf
- Description:
- TVS DIODE 12VWM 19.9VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:4,313
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Product details
Overview
DM5W12A-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 12 V reverse standoff voltage (VRWM), 19.9 V clamping voltage (VC) at 181 A peak pulse current, 3600 W peak pulse power (10/1000 µs), and DO-218 (Type E) package with anode-heatsink polarity. It is used in 12 V automotive power rail protection against load dump per ISO16750-2.
For engineers reviewing the DM5W12A-13 datasheet, DM5W12A-13 pinout, DM5W12A-13 application, or DM5W12A-13 equivalent, this page delivers verified electrical specs, thermal resistance (RθJC = 1.1 °C/W), automotive qualification status (AEC-Q compliant), and real-world surge immunity context per ISO7637-2 Pulse 1/2a/3a/3b and ISO16750-2 load dump waveforms.
Technical Context
This TVS diode operates as a unidirectional, anode-grounded clamp in high-energy automotive transients. Its breakdown voltage (VBR = 13.3–14.7 V @ 5 mA) ensures reliable triggering before system overvoltage damage, while low thermal resistance (1.1 °C/W) enables sustained 5 W average power dissipation at TC = +25°C.
The device sustains 500 A non-repetitive forward surge (IFSM, 8.3 ms half-sine) and clamps to ≤19.9 V under 181 A 10/1000 µs pulses - critical for protecting downstream DC-DC converters, CAN transceivers, and microcontrollers on 12 V battery rails during alternator load dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12 V - Maximum continuous reverse operating voltage before leakage exceeds 10 µA; sets minimum system overvoltage threshold for protection activation. |
| VBR (min/max) | 13.3 / 14.7 V @ 5 mA - Confirmed breakdown range ensures predictable turn-on without premature conduction during normal 12 V rail operation. |
| VC @ IPP | 19.9 V @ 181 A (10/1000 µs) - Clamping voltage defines maximum stress imposed on protected ICs during worst-case surge. |
| PPK | 3600 W - Peak pulse power rating validates capability to absorb ISO16750-2 load dump energy without failure. |
| RθJC | 1.1 °C/W - Low junction-to-case thermal resistance enables effective heat transfer to heatsink-mounted PCB copper, supporting 5 W steady-state dissipation. |
| IFSM | 500 A @ 8.3 ms - Forward surge rating confirms robustness against repetitive cranking surges and alternator field collapse events. |
| TJ Range | −55 to +175 °C - Full automotive temperature range qualification ensures reliability in engine bay and under-hood environments. |
Pinout & Package
Package: DO-218 (Type E), surface-mount, anode-heatsink configuration. Molded plastic body (UL 94V-0), matte tin-plated terminals, polarity indicated by cathode bar marking. Weight: 2.74 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Current return path and thermal interface | Must be soldered to large copper pour or heatsink for RθJC = 1.1 °C/W performance; electrically connected to system ground in unidirectional configuration. |
| Cathode (Lead) | Transient voltage sensing and clamping node | Connected to protected line (e.g., battery feed); conducts surge current to anode when VRWM exceeded, limiting voltage to ≤19.9 V. |
Key Features
| Feature | Design Value |
|---|---|
| 3600 W peak pulse power | Validates compliance with ISO16750-2 Load Dump Test (10 ms exponential waveform up to 38 V at 12 V system), enabling single-device protection without external series impedance. |
| Low RθJC (1.1 °C/W) | Enables full 5 W average power handling at TC = +25°C with minimal derating - critical for sustained surge duty cycles in engine control units. |
| AEC-Q qualified | Meets JEDEC-based automotive reliability standards including HTOL, TCT, and HAST, ensuring long-term stability in harsh under-hood environments. |
| Halogen- and antimony-free "Green" construction | Contains <900 ppm Br, <900 ppm Cl (<1500 ppm total Br+Cl), and <1000 ppm Sb - satisfies EU RoHS 3 and automotive OEM environmental requirements. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects 12 V input of microcontroller-based ECUs from alternator load dump surges during battery disconnect events. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery feed and DC-DC input, conducting only during overvoltage transients. Use Value: Limits voltage to ≤19.9 V during 3600 W surges, preventing latch-up or permanent damage to 3.3 V/5 V regulators and MCU I/O. |
Use Scenario: Shields BCM power supply from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling) transients on vehicle wiring harnesses. IC Role / Device Role / Timing Role: Primary surge suppression element at main 12 V entry point, mounted directly to heatsinked ground plane. Use Value: Achieves <10 µA leakage at 12 V VRWM, minimizing standby current drain while clamping to 19.9 V within 1 ns response time. |
| Infotainment System Power Supply | ADAS Camera Module Input |
Use Scenario: Guards USB-C PD controller and display driver power inputs against coupled transients from adjacent high-current circuits (e.g., seat motors). IC Role / Device Role / Timing Role: Secondary-level TVS on 12 V intermediate rail, downstream of main fuse and upstream of buck converter. Use Value: Withstands 500 A IFSM surges and maintains <10 µA IR at 175 °C TJ, ensuring reliability across extended vehicle lifetime. |
Use Scenario: Protects 12 V camera module input from ESD and load dump events in rear-view or surround-view systems exposed to chassis ground noise. IC Role / Device Role / Timing Role: First-line transient suppressor mounted at connector interface, leveraging DO-218's low-inductance anode-tab layout. Use Value: Delivers 1.1 °C/W thermal resistance to maintain junction temperature below 175 °C during repeated 10/1000 µs surges, preserving image sensor functionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Lower PPK (400 W), higher VC (19.9 V same), DO-214AC package, no AEC-Q qualification | Not rated for ISO16750-2 load dump; suitable only for low-energy ISO7637-2 Pulse 3a/b | Select when cost sensitivity outweighs automotive qualification and load dump immunity requirements. |
| SMCJ12A | Higher PPK (1500 W), same VC (19.9 V), DO-214AB package, no AEC-Q qualification | Lacks 3600 W capacity for full load dump; limited to partial surge suppression in non-critical modules | Choose where board space permits larger DO-214AB and full AEC-Q compliance is not mandated. |
Compared with SMAJ12A and SMCJ12A, DM5W12A-13 uniquely delivers AEC-Q qualification, 3600 W peak power, and DO-218 thermal performance - making it the only option capable of standalone ISO16750-2 load dump compliance in compact surface-mount form.
Availability
DM5W12A-13 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, infotainment power supplies, and ADAS camera modules requiring stable component supply across multi-year production cycles.
Supply support for DM5W12A-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.
DM5W12A-13 belongs to Diodes' automotive-grade TVS diode product line, engineered specifically to meet ISO7637-2 and ISO16750-2 surge immunity requirements in under-hood and powertrain applications.
FAQ
What is the maximum clamping voltage of DM5W12A-13 under standard test conditions?
The maximum clamping voltage (VC) is 19.9 V when subjected to a 10/1000 µs waveform with a peak pulse current (IPP) of 181 A. This value is measured at TA = +25°C and reflects worst-case voltage seen by protected circuitry during surge events, validated per IEC 61000-4-5 methodology.
Is DM5W12A-13 qualified for automotive use per AEC-Q200?
DM5W12A-13 is qualified to JEDEC standards referenced in AEC-Q200, including high-temperature operating life (HTOL), temperature cycling (TCT), and highly accelerated stress test (HAST). It meets automotive reliability requirements but is not labeled "AEC-Q200 qualified" in marketing materials - the automotive-compliant variant is DM5W12AQ-13.
How does the DO-218 package improve thermal performance over DO-214AB?
The DO-218 (Type E) package uses an integrated anode heatsink tab that provides direct thermal conduction to PCB copper, achieving RθJC = 1.1 °C/W. In contrast, DO-214AB relies on lead-frame conduction only (RθJC ≈ 3.5–5.0 °C/W), limiting average power handling to ~1.5 W versus DM5W12A-13's 5 W at TC = +25°C.
Can DM5W12A-13 be used in bidirectional surge protection configurations?
No - DM5W12A-13 is a unidirectional TVS diode with anode-heatsink polarity. Its electrical characteristics (e.g., VBR, VC, IR) are specified only for reverse-biased operation. Bidirectional protection requires two devices in series opposition or a dedicated bidirectional part such as DM5W12CA-13.
DM5W12A-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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 181A
- 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
DM5W12A-13 FAQ
1.How can I place an order for DM5W12A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM5W12A-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 DM5W12A-13 reliable?
The price and inventory of DM5W12A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM5W12A-13 is usually 5 days.
3.What payment methods are accepted for DM5W12A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM5W12A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM5W12A-13?
DM5W12A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM5W12A-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 DM5W12A-13?
For technical support, including DM5W12A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM5W12A-13 requirements.
6.How does Aetrix verify that DM5W12A-13 is sourced from the original manufacturer or authorized distributors?
All DM5W12A-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 DM5W12A-13 meets industry standards.
7.What is the process for return or replacement of DM5W12A-13?
All DM5W12A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM5W12A-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 DM5W12A-13 part is unused and in its original packaging.
Return procedure for DM5W12A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM5W12A-13 Tags
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