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Diodes Incorporated DM8W14AQ-13
- Part No.:
- DM8W14AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W14AQ-13.pdf
- Description:
- TVS DO-218
- Quantity:
- Payment:
- Shipping:
Inventory:7,989
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Product details
Overview
DM8W14AQ-13 from Diodes Incorporated is a surface-mount transient voltage suppressor (TVS) diode in DO-218 (Type E) package, designed for automotive load dump and ISO7637-2 surge protection. It features 6600W peak pulse power (10/1000µs), 14V reverse standoff voltage (VRWM), 15.6V minimum breakdown voltage (VBR), 24.5V clamping voltage (VC) at 330A IPP, and operates from −55°C to +175°C.
For engineers reviewing the DM8W14AQ-13 datasheet, DM8W14AQ-13 pinout, DM8W14AQ-13 application, or DM8W14AQ-13 equivalent, this device is selected for high-reliability 12V/24V automotive power rail protection where AEC-Q101 qualification, ISO16750-2 compliance, and 175°C junction capability are mandatory design requirements.
Technical Context
This unidirectional TVS diode uses glass-passivated silicon die with heatsink-as-anode polarity, enabling low thermal resistance (RθJC = 0.9°C/W) and stable clamping under repetitive load dump transients. Its 10/1000µs waveform rating of 6600W and 8.3ms IFSM = 700A support robust protection against battery line surges per ISO16750-2 Clause 4.6.
The device exhibits tight VBR tolerance (±5% typical), low leakage (<15µA at VRWM, TA=25°C; <250µA at TJ=175°C), and predictable clamping behavior up to 175°C junction temperature-critical for under-hood ECUs and power distribution modules exposed to sustained high ambient temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000µs) | 6600W - sustains single high-energy load dump events without failure |
| Reverse Standoff Voltage (VRWM) | 14V - blocks normal 12V automotive system voltage with margin |
| Breakdown Voltage (VBR @ 5mA) | 15.6V min - ensures reliable turn-on before downstream IC damage thresholds |
| Clamping Voltage (VC @ 330A) | 24.5V - limits transient voltage seen by protected circuitry during worst-case surge |
| Junction Temperature Range | −55°C to +175°C - supports operation in engine bay and transmission control units |
| Thermal Resistance (Junction-to-Case) | 0.9°C/W - enables efficient heat transfer to PCB copper or heatsink |
| AEC-Q101 Qualified | Yes - certified for automotive-grade reliability and stress testing |
Pinout & Package
Package: DO-218 (Type E), molded plastic case with UL 94V-0 flammability rating; heatsink tab is anode (pin 1), cathode marked by bar on top surface; weight ≈2.74g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Heatsink Tab (Anode) | Anode connection / thermal path | Primary current path and main thermal conduction interface to PCB copper pour or external heatsink |
| Top Surface Bar (Cathode) | Cathode connection | Marked terminal for correct orientation during placement; connects to protected line (e.g., battery rail) |
Key Features
| Feature | Design Value |
|---|---|
| 6600W Peak Pulse Power | Handles ISO16750-2 load dump surges (up to 35V, 100ms) without degradation when properly heatsinked |
| Glass Passivated Die | Ensures long-term stability and moisture resistance in humid under-hood environments |
| TJ = +175°C Capability | Enables use in high-temperature locations such as near engines or inverters without derating concerns |
| AEC-Q101 Qualification | Validated for automotive applications including vibration, thermal cycling, and humidity exposure |
| Lead-Free & Halogen-Free | Complies with RoHS 3 and automotive green standards (Br+Cl <1500ppm, Sb <1000ppm) |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects microcontroller power supply against alternator load dump spikes during battery disconnect events. IC Role / Device Role / Timing Role: Unidirectional TVS clamps transient overvoltage on 12V main input rail before it reaches LDOs and MCU VDD pins. Use Value: Limits clamped voltage to 24.5V at 330A, well below typical 28V absolute maximum ratings of automotive PMICs and MCUs. | Use Scenario: Shields CAN transceivers and LIN drivers from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (battery jump-start) transients. IC Role / Device Role / Timing Role: Fast-response TVS placed at BCM main power entry point to absorb negative-going transients before they propagate to communication ICs. Use Value: Sub-1ns response time and 15.6V VBR ensure clamping initiates before 12V rail exceeds safe operating range of 5V/3.3V logic interfaces. |
| Electric Power Steering (EPS) Motor Driver | Advanced Driver Assistance Systems (ADAS) Camera Module |
Use Scenario: Guards H-bridge gate driver supplies against back-EMF surges generated during motor commutation and emergency braking. IC Role / Device Role / Timing Role: High-current TVS on 12V auxiliary rail absorbs repetitive 700A IFSM-rated surges without thermal runaway. Use Value: 0.9°C/W RθJC allows direct mounting to copper-backed PCB, maintaining TJ <175°C even during frequent surge events. | Use Scenario: Safeguards image sensor and ISP power rails in rear-view or surround-view cameras exposed to vehicle-level ESD and load dump. IC Role / Device Role / Timing Role: Primary overvoltage protector on camera module's 12V input, positioned upstream of DC-DC converters. Use Value: 250µA max leakage at 175°C prevents excessive quiescent current in always-on ADAS systems, preserving battery life. |
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 = 400W; DO-214AC package; RθJC ≈ 50°C/W; no AEC-Q101 qualification | Not suitable for load dump; limited to low-energy ISO7637-2 Pulse 3a/b only | Select only for non-automotive, low-power industrial sensors with <100W surge exposure |
| SMCJ14A-Q | PPK = 1500W; DO-214AB; AEC-Q101 qualified; VC = 23.2V @ 64.9A | Insufficient for ISO16750-2 load dump; adequate for ISO7637-2 Pulse 1/2a only | Use where space constraints prevent DO-218 mounting but AEC-Q101 is required |
Compared with SMAJ14A and SMCJ14A-Q, DM8W14AQ-13 delivers 4.4× higher surge energy handling and 7.3× lower thermal resistance-enabling reliable protection in high-power automotive domains where load dump immunity is non-negotiable.
Availability
DM8W14AQ-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, electric power steering systems, and ADAS camera modules requiring stable component supply across multi-year automotive production cycles.
Supply support for DM8W14AQ-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 DM8WxxAQ series belongs to Diodes' AEC-Q101-qualified TVS portfolio, engineered specifically for automotive power rail surge immunity-emphasizing high-temperature operation, load dump survivability, and PPAP-ready manufacturing.
FAQ
What is the clamping voltage of DM8W14AQ-13 at its rated peak pulse current?
The clamping voltage (VC) is 24.5V measured at 330A peak pulse current using the 10/1000µs waveform. This value is guaranteed per datasheet Table 1 and reflects worst-case voltage seen by downstream circuitry during standardized surge testing, ensuring compatibility with 28V-tolerant automotive ICs.
Is DM8W14AQ-13 bidirectional or unidirectional?
DM8W14AQ-13 is a unidirectional TVS diode. Its polarity is defined by the heatsink tab serving as the anode and the top-surface bar marking the cathode. It protects against positive transients on the cathode side relative to the anode, making it suitable for DC power rail applications like automotive battery lines.
Can DM8W14AQ-13 be used in 24V commercial vehicle systems?
Yes-its 14V VRWM and 15.6V VBR provide appropriate margin above nominal 24V system voltage during cold-cranking (typically 18–20V), while its 24.5V clamping voltage remains compatible with 28V-rated components commonly used in heavy-duty truck ECUs and telematics modules.
Does DM8W14AQ-13 require a heatsink for continuous operation?
No external heatsink is required for transient suppression, but the DO-218 package must be mounted on ≥100mm² of 2oz copper for effective thermal dissipation during repeated surges. The 0.9°C/W RθJC rating assumes full thermal contact between the anode tab and PCB copper, which is essential to maintain TJ ≤175°C under high-frequency surge conditions.
DM8W14AQ-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
DM8W14AQ-13 FAQ
1.How can I place an order for DM8W14AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W14AQ-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 DM8W14AQ-13 reliable?
The price and inventory of DM8W14AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W14AQ-13 is usually 5 days.
3.What payment methods are accepted for DM8W14AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W14AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W14AQ-13?
DM8W14AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W14AQ-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 DM8W14AQ-13?
For technical support, including DM8W14AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W14AQ-13 requirements.
6.How does Aetrix verify that DM8W14AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM8W14AQ-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 DM8W14AQ-13 meets industry standards.
7.What is the process for return or replacement of DM8W14AQ-13?
All DM8W14AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W14AQ-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 DM8W14AQ-13 part is unused and in its original packaging.
Return procedure for DM8W14AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W14AQ-13 Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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