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Diodes Incorporated DM8W15AQ-13
- Part No.:
- DM8W15AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W15AQ-13.pdf
- Description:
- TVS DO-218
- Quantity:
- Payment:
- Shipping:
Inventory:7,809
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Product details
Overview
DM8W15AQ-13 from Diodes Incorporated is a surface-mount transient voltage suppressor (TVS) diode designed for automotive power-line surge protection. It features a 15 V reverse standoff voltage (VRWM), 6600 W peak pulse power dissipation (10/1000 µs), 700 A peak forward surge current (IFSM), and operates from –55 °C to +175 °C - enabling robust protection of 12 V automotive electronics against ISO7637-2 Pulse 1/2a/3a/3b and ISO16750-2 load dump surges.
For engineers reviewing the DM8W15AQ-13 datasheet, DM8W15AQ-13 pinout, DM8W15AQ-13 application, or DM8W15AQ-13 equivalent, key selection criteria include clamping voltage (VC = 24.4 V @ Ipp = 272 A), thermal resistance (RθJC = 0.9 °C/W), DO-218 (Type E) package polarity (heatsink = anode), AEC-Q101 qualification, and RoHS/halogen-free compliance.
Technical Context
This unidirectional TVS diode uses glass-passivated silicon die in a thermally optimized DO-218 package with heatsink-integrated anode terminal. Its low RθJC (0.9 °C/W) enables high-power transient energy absorption without thermal runaway under repetitive load dump events.
The device exhibits tightly controlled breakdown voltage (VBR = 16.7–18.5 V @ IT = 5 mA) and low clamping ratio (VC/VRWM ≈ 1.63), ensuring rapid response (<1 ns) and minimal overvoltage stress on downstream DC-DC converters, ECUs, and CAN transceivers during 10/1000 µs surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 15 V - Maximum continuous reverse operating voltage before leakage exceeds 10 µA; sets threshold for 12 V automotive system protection. |
| VBR @ IT=5mA | 16.7–18.5 V - Confirmed avalanche onset range; ensures reliable turn-on before sensitive ICs exceed absolute maximum ratings. |
| VC @ Ipp=272A | 24.4 V - Clamped voltage during 6600 W surge; limits stress on 30 V-rated MOSFETs and LDOs in power distribution networks. |
| PPK (10/1000µs) | 6600 W - Peak transient power handling capacity; meets ISO16750-2 load dump requirement at TJ = +175 °C. |
| RθJC | 0.9 °C/W - Junction-to-case thermal resistance; enables 8 W steady-state dissipation at TC = +25 °C with minimal derating. |
| TJ Range | –55 to +175 °C - Full automotive temperature coverage; supports under-hood ECU and battery management applications. |
Pinout & Package
Package: DO-218 (Type E), molded plastic case (UL 94V-0), 2.74 g weight, lead-free matte tin plating. Heatsink tab is electrically connected to the anode (Pin 1); cathode marked by bar symbol on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive input / surge return path | Primary thermal and electrical connection point; must be soldered to ≥100 mm² copper pour for effective heat dissipation and low-inductance surge return. |
| Cathode (Top Surface Terminal) | Surge clamping node | Connected to protected line (e.g., battery rail); clamps transients to VC when voltage exceeds VBR, diverting current to anode/heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTGB, HTRB, and TCT; supports PPAP documentation for Tier 1 OEM programs. |
| ISO7637-2 & ISO16750-2 compliant | Passes Pulse 1 (inductive switch-off), Pulse 2a (load dump), Pulse 3a/3b (capacitive coupling) without degradation - no external snubbers required. |
| High-temperature stability | Clamping voltage drift <±5% from –40 °C to +150 °C; maintains protection margin across engine bay thermal cycling. |
| Green construction | Halogen- and antimony-free (Br+Cl <1500 ppm, Sb <1000 ppm); satisfies EU ELV and OEM sustainability requirements. |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) Battery Rail Protection |
|---|---|
Use Scenario: Protects 5 V/3.3 V domain regulators and microcontrollers from load dump spikes during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor; clamps within 1 ns to limit voltage overshoot to <25 V. Use Value: Eliminates need for series fuse re-rating and reduces BOM count by replacing dual-stage (TVS + varistor) solutions. |
Use Scenario: Shields LIN/CAN transceivers and LED drivers from ISO7637-2 Pulse 1 (–200 V) and Pulse 3b (±200 V) transients on 12 V supply lines. IC Role / Device Role / Timing Role: Primary surge clamp at BCM main power entry; coordinates with downstream ceramic capacitors to suppress sub-100 ns ringing. Use Value: Maintains signal integrity during EMC testing; achieves CISPR 25 Class 5 immunity without layout redesign. |
| ADAS Camera Power Supply Protection | Electric Power Steering (EPS) Motor Driver Protection |
Use Scenario: Safeguards 12 V → 5 V/1.8 V PMICs powering image sensors and ISP processors in front/rear cameras. IC Role / Device Role / Timing Role: First-line transient absorber upstream of input EMI filter; handles repetitive 10/1000 µs pulses during vehicle start-stop cycles. Use Value: Prevents sensor reset events and frame drop during cranking; validated for >100,000 surge cycles at 85 °C ambient. |
Use Scenario: Protects half-bridge gate drivers and current-sense amplifiers from inductive kickback during EPS motor commutation faults. IC Role / Device Role / Timing Role: Bidirectionally referenced TVS (anode grounded via heatsink) clamping both positive and negative transients on H-bridge supply rails. Use Value: Enables use of lower-voltage-rated SiC MOSFETs (650 V) by limiting transient overshoot to <400 V during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Lower PPK (400 W), DO-214AC package, RθJC ≈ 50 °C/W, VRWM = 15 V | Not suitable for ISO16750-2 load dump; limited to low-energy ISO7637-2 Pulse 3 only | Select only for cost-sensitive non-automotive industrial controls with <100 A surge exposure. |
| SMCJ15A | PPK = 1500 W, DO-214AB package, RθJC ≈ 12 °C/W, same VRWM but higher VC = 24.9 V @ 243 A | Meets ISO7637-2 but fails ISO16750-2 load dump due to insufficient energy rating | Acceptable for BCM/LIN applications where load dump is mitigated externally (e.g., with alternator regulator). |
Compared with SMAJ15A and SMCJ15A, DM8W15AQ-13 delivers 4.4× and 4.4× higher peak power handling respectively, enables direct placement on high-current battery rails without heatsink extension, and supports full AEC-Q101 PPAP compliance - making it the only option for single-device load dump protection in modern 12 V ADAS and EPS systems.
Availability
DM8W15AQ-13 is available at Aetrix Electronics and suitable for automotive ECU power input protection, body control module (BCM) battery rail hardening, ADAS camera power conditioning, and electric power steering (EPS) motor driver surge suppression requiring stable component supply across multi-year production cycles.
Supply support for DM8W15AQ-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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with design centers in Asia, Europe, and the US, and manufacturing in China, Taiwan, and the UK.
DM8W15AQ-13 belongs to Diodes' automotive-grade TVS portfolio engineered specifically for high-energy load dump and ISO7637-2 surge immunity in 12 V vehicle architectures - emphasizing thermal robustness, AEC-Q101 reliability, and green material compliance.
FAQ
What is the maximum clamping voltage of DM8W15AQ-13 under full-rated surge current?
The maximum clamping voltage (VC) is 24.4 V when subjected to a 10/1000 µs waveform with peak pulse current (Ipp) of 272 A. This value is measured per JEDEC standards and confirmed across production lots; it ensures protected circuits remain below 25 V during worst-case ISO16750-2 load dump events.
Can DM8W15AQ-13 be used in bidirectional surge protection configurations?
No - DM8W15AQ-13 is a unidirectional TVS diode with anode tied to the heatsink tab. For bidirectional protection, two devices must be connected in series opposing configuration, or a dedicated bidirectional part like DM8W15CAQ-13 should be selected. The datasheet explicitly defines polarity: heatsink = anode, top terminal = cathode.
How does the DO-218 package improve thermal performance over standard SMB/SMA packages?
The DO-218 (Type E) package integrates the anode directly into a large metal heatsink tab, achieving RθJC = 0.9 °C/W - over 50× better than SMAJ15A (≈50 °C/W). This allows 8 W steady-state dissipation at TC = +25 °C and sustains 6600 W transient peaks without junction overheating, critical for under-hood automotive placement.
Is DM8W15AQ-13 compatible with lead-free reflow soldering processes?
Yes - it features matte tin lead-free plating and is qualified for standard Pb-free reflow profiles (JEDEC J-STD-020, peak 260 °C). The package is rated for moisture sensitivity level 1 (MSL-1), eliminating bake requirements prior to assembly. Solderability is verified per MIL-STD-202, Method 208.
DM8W15AQ-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):
- 270A
- 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
DM8W15AQ-13 FAQ
1.How can I place an order for DM8W15AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W15AQ-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 DM8W15AQ-13 reliable?
The price and inventory of DM8W15AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W15AQ-13 is usually 5 days.
3.What payment methods are accepted for DM8W15AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W15AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W15AQ-13?
DM8W15AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W15AQ-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 DM8W15AQ-13?
For technical support, including DM8W15AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W15AQ-13 requirements.
6.How does Aetrix verify that DM8W15AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM8W15AQ-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 DM8W15AQ-13 meets industry standards.
7.What is the process for return or replacement of DM8W15AQ-13?
All DM8W15AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W15AQ-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 DM8W15AQ-13 part is unused and in its original packaging.
Return procedure for DM8W15AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W15AQ-13 Tags
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