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Diodes Incorporated DM8W17AQ-13
- Part No.:
- DM8W17AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W17AQ-13.pdf
- Description:
- TVS DO-218
- Quantity:
- Payment:
- Shipping:
Inventory:2,043
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Product details
Overview
DM8W17AQ-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 ISO 7637-2 surge protection. It features 6600W peak pulse power (10/1000µs), 17V reverse standoff voltage (VRWM), 19.0V min breakdown voltage (VBR), 28.5V max clamping voltage (VC) at 242A IPP, and operates from −55°C to +175°C.
For engineers reviewing the DM8W17AQ-13 datasheet, DM8W17AQ-13 pinout, DM8W17AQ-13 application, or DM8W17AQ-13 equivalent, this device is selected for high-reliability 12V/24V automotive power rail protection where AEC-Q101 qualification, ISO16750-2 compliance, and glass-passivated junction stability under thermal stress are critical design requirements.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp transient overvoltages on automotive power lines. Its DO-218 package provides low thermal resistance (RθJC = 0.9°C/W) and integrates a heatsink-connected anode for efficient heat dissipation during 8.3ms load dump events.
The device is characterized for unidirectional operation with polarity indicated by cathode bar marking. It meets ISO 10605 (Pulse A/B), ISO 7637-2 (Pulse 1, 2a, 3a, 3b), and ISO 16750-2 load dump specifications - validated at TJ = +175°C with ≤150µA leakage at VRWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 6600W (10/1000µs waveform); enables suppression of severe ISO 16750-2 load dump surges without failure |
| Reverse Standoff Voltage (VRWM) | 17V; sets minimum operating voltage threshold before clamping begins in 12V automotive systems |
| Clamping Voltage (VC) | 28.5V @ 242A IPP; limits downstream IC voltage stress during worst-case transients |
| Operating Temperature | −55°C to +175°C; supports under-hood placement with full electrical performance retention |
| Thermal Resistance (RθJC) | 0.9°C/W; allows sustained 8W average power dissipation at TC = +25°C with minimal junction rise |
| AEC-Q101 Qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance |
Pinout & Package
Package: DO-218 (Type E), molded plastic case (UL 94V-0), heatsink-connected anode terminal, cathode marked with bar. Weight: 2.74g. Moisture sensitivity level: MSL 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Positive input / power rail connection | Electrically connected to metal heatsink tab; must be mounted to PCB copper pour for thermal and electrical integrity |
| Cathode (Bar-marked lead) | Transient current return path | Serves as clamping node to ground or low-impedance return; polarity-critical for unidirectional protection |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures stable VBR and low leakage across temperature and lifetime, critical for long-term automotive deployment |
| 6600W peak pulse rating | Supports single-event load dump suppression up to 120V/350A (10ms exponential) per ISO 16750-2 Annex D |
| TJ = +175°C capability | Enables direct mounting near high-temperature engine control units without derating or external heatsinking |
| AEC-Q101 qualification & PPAP capability | Meets automotive production audit requirements for traceable manufacturing, test coverage, and defect control |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Line |
|---|---|
Use Scenario: Protects microcontroller, CAN transceivers, and sensor interfaces from alternator load dump spikes during battery disconnect. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and local DC/DC input. Use Value: Limits voltage to ≤28.5V during 120V/350A load dump, preventing damage to 36V-rated LDOs and MCU I/O. | Use Scenario: Shields lighting drivers, window motor controllers, and LIN transceivers from ISO 7637-2 Pulse 3b (capacitive discharge) transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on fused 12V supply line upstream of local regulators. Use Value: Withstands 1000V/100A (10/1000µs) pulses while maintaining <150µA leakage at 17V, ensuring low quiescent current in sleep mode. |
| Advanced Driver Assistance System (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Safeguards image sensor and serializer ICs against coupled transients from nearby solenoid switching in ADAS domain controllers. IC Role / Device Role / Timing Role: Secondary protection stage after fuse and common-mode choke, directly at camera module input. Use Value: 28.5V clamping ensures no overvoltage exceeds the 30V absolute maximum rating of typical MIPI CSI-2 serializers. | Use Scenario: Guards gate drivers and current-sense amplifiers from inductive kickback during EPS motor phase commutation. IC Role / Device Role / Timing Role: High-energy TVS placed across H-bridge supply rails to absorb stored inductive energy. Use Value: 6600W rating handles repetitive 200A surges without degradation, verified over 1000 cycles at TJ = +150°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A | Lower peak power (400W), SMA package, RθJC ≈ 50°C/W, not AEC-Q101 qualified | Limited to non-automotive or low-energy industrial use; insufficient for ISO 16750-2 load dump | Select only for cost-sensitive consumer applications with <100W surge exposure |
| SMCJ17A | Higher peak power (1500W), SMC package, RθJC ≈ 12°C/W, AEC-Q101 optional (not standard) | Marginally meets ISO 7637-2 Pulse 1/2a but fails load dump; requires larger PCB area | Consider only if footprint constraints prevent DO-218 adoption and surge severity is below 3000W |
Compared with SMAJ17A and SMCJ17A, DM8W17AQ-13 delivers 4.4× higher peak power than SMCJ17A and 16.5× more than SMAJ17A, with integrated heatsink anode and guaranteed AEC-Q101 qualification - making it the only choice for production automotive load dump protection.
Availability
DM8W17AQ-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering designs requiring stable component supply across multi-year automotive production cycles.
Supply support for DM8W17AQ-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.
This device belongs to Diodes' DM8WxxAQ automotive TVS family, engineered specifically to meet ISO 16750-2 load dump and ISO 7637-2 transient immunity requirements in under-hood environments.
FAQ
What is the clamping voltage of DM8W17AQ-13 at its rated peak pulse current?
The clamping voltage (VC) is 28.5V measured at 242A peak pulse current using the 10/1000µs waveform. This value is guaranteed across the full operating temperature range (−55°C to +175°C) and ensures protected circuits remain within safe voltage limits during standardized automotive transients.
Is DM8W17AQ-13 bidirectional or unidirectional?
DM8W17AQ-13 is a unidirectional TVS diode. Its polarity is fixed: the heatsink tab is the anode (+), and the bar-marked lead is the cathode (−). It conducts only during positive transients on the anode relative to cathode and must be installed with correct orientation on the PCB.
Does DM8W17AQ-13 require a heatsink pad on the PCB?
Yes - the metal heatsink tab (anode) must be soldered to a minimum 100 mm² copper pour on the PCB to achieve the specified RθJC = 0.9°C/W and sustain 8W average power. Without adequate copper area, thermal derating reduces peak pulse capability and risks thermal runaway during repeated surges.
How does DM8W17AQ-13 differ from standard SMA/SMC package TVS diodes in automotive use?
Unlike SMA/SMC devices, DM8W17AQ-13 uses the DO-218 (Type E) package with integral heatsink anode, enabling 6600W peak power and 0.9°C/W thermal resistance. It is fully AEC-Q101 qualified and tested to ISO 16750-2 load dump - capabilities not achievable with legacy surface-mount packages in automotive under-hood applications.
DM8W17AQ-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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 239A
- 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
DM8W17AQ-13 FAQ
1.How can I place an order for DM8W17AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W17AQ-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 DM8W17AQ-13 reliable?
The price and inventory of DM8W17AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W17AQ-13 is usually 5 days.
3.What payment methods are accepted for DM8W17AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W17AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W17AQ-13?
DM8W17AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W17AQ-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 DM8W17AQ-13?
For technical support, including DM8W17AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W17AQ-13 requirements.
6.How does Aetrix verify that DM8W17AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM8W17AQ-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 DM8W17AQ-13 meets industry standards.
7.What is the process for return or replacement of DM8W17AQ-13?
All DM8W17AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W17AQ-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 DM8W17AQ-13 part is unused and in its original packaging.
Return procedure for DM8W17AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W17AQ-13 Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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