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Diodes Incorporated DM8W14A-13
- Part No.:
- DM8W14A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W14A-13.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:3,416
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Product details
Overview
DM8W14A-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 12V/24V systems. It delivers 6600W peak pulse power at 10/1000µs, clamps at 23.2V max under 284A peak current, and operates up to +175°C junction temperature - deployed in engine control units, body control modules, and infotainment power rails.
For engineers reviewing the DM8W14A-13 datasheet, DM8W14A-13 pinout, DM8W14A-13 application, or DM8W14A-13 equivalent, this part supports high-reliability automotive surge immunity per ISO 16750-2 Pulse A/B and ISO 7637-2 Pulse 1/2a/3a/3b, with verified thermal stability, RoHS-compliant lead-free plating, and DO-218 package mechanical robustness.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp transients above its 14V reverse standoff voltage (VRWM), with a minimum breakdown voltage of 15.6V at 5mA test current. Its 23.2V maximum clamping voltage at 284A ensures downstream ICs remain within safe operating limits during 10/1000µs load dump events.
Thermal design is enabled by a 0.9°C/W junction-to-case thermal resistance and derating curve supporting 8W steady-state dissipation at TC = +25°C - critical for sustained operation in under-hood environments where case temperatures exceed 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 6600W @ 10/1000µs - handles automotive load dump surges without failure |
| Reverse Standoff Voltage | 14V - blocks normal 12V system operation while triggering only on overvoltage |
| Clamping Voltage | 23.2V max @ 284A - limits voltage seen by protected circuitry during worst-case surge |
| Junction Temperature Range | –55°C to +175°C - qualified for under-hood automotive deployment |
| Thermal Resistance RθJC | 0.9°C/W - enables effective heatsinking via PCB copper pour or metal chassis contact |
| Package | DO-218 (Type E) - surface-mount, 2.74g molded plastic with UL 94V-0 rating |
| Leakage Current | 10µA max @ VRWM - negligible standby power loss in always-on vehicle systems |
Pinout & Package
DO-218 (Type E) package features two terminals: anode (heatsink side, marked with circle) and cathode (marked with bar). The heatsink serves as the anode terminal and must be thermally connected to PCB ground plane or chassis for optimal thermal performance and electrical reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Positive terminal / thermal path | Electrically connects to system ground; primary heat conduction path to PCB or chassis |
| Cathode (Bar-marked lead) | Negative terminal / surge input | Connects to protected line (e.g., battery rail); conducts surge current to ground when clamped |
Key Features
| Feature | Design Value |
|---|---|
| 6600W Peak Pulse Power | Withstands full ISO 16750-2 Load Dump (Pulse 5a) without degradation in 12V systems |
| TJ = +175°C Rating | Validated for continuous operation in engine bay environments exceeding 125°C case temperature |
| Uni-directional Polarity | Optimized for DC power rail protection where reverse voltage is not expected |
| Lead-Free & Halogen-Free | RoHS 3 compliant with <900ppm Br/Cl and <1000ppm Sb - meets global automotive environmental mandates |
| AEC-Q Qualified | Tested per JEDEC standards for high-reliability automotive use (separate AQ variant available) |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects microcontroller and CAN transceiver power inputs from alternator load dump spikes during ignition-off transitions. IC Role / Device Role / Timing Role: Primary clamping device on main 12V supply rail upstream of DC-DC converters. Use Value: Limits transient voltage to ≤23.2V, preventing latch-up or gate oxide damage in 3.3V/5V logic supplies. |
Use Scenario: Shields LIN bus transceivers and door lock actuators from ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling). IC Role / Device Role / Timing Role: Fast-response shunt protector placed directly at BCM connector entry point. Use Value: Sub-1ns response time ensures clamping before sensitive analog front-ends experience overvoltage stress. |
| Infotainment Head Unit Power Supply | ADAS Camera Module Input Protection |
Use Scenario: Guards USB-C PD controller and display driver ICs against battery line surges during jump-start events. IC Role / Device Role / Timing Role: Secondary surge suppression stage after fuse and primary filter, before LDO regulators. Use Value: 284A peak current handling prevents single-event failure during repeated 12V system transients. |
Use Scenario: Secures 5V camera sensor power input against ESD and load dump coupled through FAKRA connectors. IC Role / Device Role / Timing Role: Low-capacitance (≈30pF @ 1V) TVS placed adjacent to connector to minimize signal distortion. Use Value: 23.2V clamping preserves 5V rail integrity while maintaining <10µA leakage at nominal voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A | Lower 400W peak power; SMA package; 23.2V clamping same but lower IPP (32.4A) | Not suitable for ISO 16750-2 Load Dump; limited to low-energy ISO 7637-2 Pulse 1/2a | Select only for non-automotive 12V industrial controls with <50A surge exposure |
| SMCJ14A | Same 14V VRWM and 23.2V VC, but 1500W PPK; SMC package; higher RθJC (1.5°C/W) | Meets ISO 7637-2 but fails ISO 16750-2 Pulse 5a due to insufficient energy handling | Use where space allows larger SMC footprint and thermal management permits higher RθJC |
Compared with SMAJ14A and SMCJ14A, DM8W14A-13 uniquely satisfies both ISO 16750-2 Load Dump and ISO 7637-2 requirements in a compact DO-218 package with superior thermal resistance - making it the only option for space-constrained, high-energy automotive power rail protection.
Availability
DM8W14A-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, and infotainment head units requiring stable component supply across automotive production lifecycles.
Supply support for DM8W14A-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.
The DM8WxxA series belongs to Diodes' automotive-grade TVS portfolio, engineered specifically to meet stringent ISO 16750-2 and ISO 7637-2 surge immunity requirements in harsh-temperature vehicle environments.
FAQ
What is the maximum clamping voltage of DM8W14A-13 at rated peak current?
The maximum clamping voltage (VC) is 23.2V at 284A peak pulse current under the standard 10/1000µs waveform. This value is guaranteed across the full operating temperature range (–55°C to +175°C) and ensures protected circuits remain below critical overvoltage thresholds during automotive load dump events.
Is DM8W14A-13 suitable for bidirectional surge protection?
No - DM8W14A-13 is unidirectional only, with polarity indicated by a bar marking on the cathode lead and a circle on the anode (heatsink). It is designed exclusively for DC power rail protection where reverse voltage is not expected; bidirectional applications require a symmetric TVS like SMBJ14CA.
How does the DO-218 package improve thermal performance over SMA or SMC?
The DO-218 (Type E) package provides direct thermal conduction from the anode heatsink to the PCB ground plane, achieving 0.9°C/W junction-to-case resistance - significantly lower than SMAJ14A (35°C/W) or SMCJ14A (1.5°C/W). This enables sustained 8W power dissipation at +25°C case temperature and reliable operation above +125°C.
Does DM8W14A-13 meet AEC-Q200 qualification?
DM8W14A-13 is qualified to JEDEC standards referenced in AEC-Q200 for high-reliability automotive use. For full AEC-Q200 certified versions with extended testing (including temperature cycling and board-level vibration), the automotive-grade variant DM8W14AQ-13 is available under a separate datasheet.
DM8W14A-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):
- 284A
- 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
DM8W14A-13 FAQ
1.How can I place an order for DM8W14A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W14A-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 DM8W14A-13 reliable?
The price and inventory of DM8W14A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W14A-13 is usually 5 days.
3.What payment methods are accepted for DM8W14A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W14A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W14A-13?
DM8W14A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W14A-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 DM8W14A-13?
For technical support, including DM8W14A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W14A-13 requirements.
6.How does Aetrix verify that DM8W14A-13 is sourced from the original manufacturer or authorized distributors?
All DM8W14A-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 DM8W14A-13 meets industry standards.
7.What is the process for return or replacement of DM8W14A-13?
All DM8W14A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W14A-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 DM8W14A-13 part is unused and in its original packaging.
Return procedure for DM8W14A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W14A-13 Tags
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