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Diodes Incorporated DM8W24AQ-13
- Part No.:
- DM8W24AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W24AQ-13.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:750
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Product details
Overview
DM8W24AQ-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 24 V reverse standoff voltage (VRWM), 38.9 V maximum clamping voltage (VC) at 170 A peak pulse current, and 6600 W peak pulse power dissipation (10/1000 µs waveform), operating from –55 °C to +175 °C in DO-218 (Type E) package.
For engineers reviewing the DM8W24AQ-13 datasheet, DM8W24AQ-13 pinout, DM8W24AQ-13 application, or DM8W24AQ-13 equivalent, key selection criteria include clamping performance under ISO16750-2 Pulse 5a (load dump), thermal resistance (RθJC = 0.9 °C/W), AEC-Q101 qualification, and anode-heatsink polarity configuration for PCB thermal management.
Technical Context
This TVS diode uses glass-passivated silicon junction construction to sustain high-energy transients while maintaining stable leakage (<15 µA at VRWM) and low thermal impedance. Its 0.9 °C/W junction-to-case thermal resistance enables effective heat transfer to the heatsink-anode mounting surface, critical for sustained operation during repetitive load-dump events.
The device meets ISO16750-2 Pulse 5a (load dump) and ISO7637-2 Pulse 1, 2a, 3a, and 3b waveforms without derating up to +125 °C case temperature. Clamping behavior is characterized using standardized 10/1000 µs exponential pulses, with verified VC ≤ 38.9 V at Ipp = 170 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system bus voltage margin. |
| VBR (min/max) | 26.7 V / 29.5 V - Breakdown occurs within this range at 5 mA test current; ensures predictable turn-on threshold. |
| VC @ Ipp | 38.9 V at 170 A - Peak clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by protected ICs. |
| PPK | 6600 W - Peak pulse power handling capability; supports automotive load-dump energy per ISO16750-2. |
| RθJC | 0.9 °C/W - Junction-to-case thermal resistance; enables direct heatsink coupling for high-reliability thermal management. |
| TJ Range | –55 °C to +175 °C - Full automotive-grade operating temperature range; validated for under-hood environments. |
| AEC-Q101 | Qualified - Certified for automotive applications requiring change control, PPAP, and IATF 16949 manufacturing. |
Pinout & Package
Package: DO-218 (Type E), molded plastic case with UL 94V-0 flammability rating; heatsink tab is electrically connected to the anode (pin 1), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive terminal / thermal interface | Must be soldered to large copper pour or heatsink for thermal conduction; electrically connects to protected circuit's positive rail. |
| Cathode (Bar-marked lead) | Negative terminal / surge return path | Connected to ground or low-impedance return path; carries full surge current during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enables stable leakage (<15 µA at VRWM) and robust surge endurance across temperature extremes. |
| DO-218 anode-heatsink construction | Direct thermal path from junction to PCB copper; reduces thermal stress during repeated 6600 W surges. |
| ISO16750-2 & ISO7637-2 compliance | Validated against real-world automotive transients including 35 V/100 ms load dump and 100 V/10 ms Pulse 1. |
| AEC-Q101 qualification | Guarantees reliability for automotive production use with controlled change management and PPAP documentation. |
| Lead-free, halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive environmental requirements without compromising surge performance. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) CAN Bus Protection |
|---|---|
Use Scenario: Protects 12 V supply rail of engine ECU against alternator load-dump surges up to 35 V/100 ms. IC Role / Device Role / Timing Role: Primary clamping device placed between battery feed and DC-DC input stage. Use Value: Limits voltage to ≤38.9 V during 170 A surge, preventing damage to downstream LDOs and microcontrollers. |
Use Scenario: Shields isolated CAN transceivers from coupled transients induced on vehicle chassis ground. IC Role / Device Role / Timing Role: Common-mode surge clamp between CAN_H/CAN_L differential pair and chassis ground. Use Value: Maintains signal integrity by clamping common-mode spikes before they disrupt differential signaling. |
| ADAS Camera Power Supply | Electric Power Steering (EPS) Motor Driver |
Use Scenario: Guards 12 V input of image sensor module exposed to battery line noise and ignition transients. IC Role / Device Role / Timing Role: First-line overvoltage protection ahead of buck converter and sensor bias circuitry. Use Value: Ensures uninterrupted imaging by suppressing >24 V surges within 1 ns response time and <39 V clamping. |
Use Scenario: Protects gate drivers and H-bridge FETs in EPS motor control unit from inductive kickback and load dump. IC Role / Device Role / Timing Role: High-power bidirectional clamp across motor driver supply rails. Use Value: Absorbs 6600 W surges without degradation, preserving MOSFET SOA and enabling ASIL-B compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Lower PPK (400 W), DO-214AC package, RθJC ≈ 50 °C/W, no AEC-Q101 qualification | Not suitable for load-dump; limited to ISO7637-2 Pulse 1/2a only | Select only for non-automotive, low-energy board-level protection where cost outweighs reliability. |
| SMCJ24A | PPK = 1500 W, DO-214AB package, RθJC ≈ 12 °C/W, AEC-Q101 qualified but not PPAP-capable | Supports ISO7637-2 but fails ISO16750-2 Pulse 5a due to lower energy rating | Acceptable for BCM or lighting modules where load-dump exposure is mitigated by upstream fusing. |
Compared with SMAJ24A and SMCJ24A, DM8W24AQ-13 delivers 4.4× higher peak power handling, 55× lower thermal resistance, and full PPAP support-making it the only option qualified for direct battery-connected load-dump protection in powertrain ECUs.
Availability
DM8W24AQ-13 is available at Aetrix Electronics and suitable for automotive powertrain control units, body electronics modules, and ADAS camera systems requiring stable component supply across multi-year vehicle production cycles.
Supply support for DM8W24AQ-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 protection, power management, and signal integrity solutions for automotive and industrial markets.
The DM8WxxAQ series belongs to Diodes' AEC-Q101-qualified automotive TVS portfolio, engineered specifically for direct-battery surge suppression in harsh under-hood environments with minimal PCB footprint and maximum thermal efficiency.
FAQ
What is the maximum clamping voltage of DM8W24AQ-13 under ISO16750-2 load-dump conditions?
The DM8W24AQ-13 achieves a maximum clamping voltage of 38.9 V at 170 A peak pulse current (10/1000 µs waveform), which directly satisfies ISO16750-2 Pulse 5a requirements for 12 V systems. This value is measured with TC = +25 °C and confirmed across the full –55 °C to +175 °C operating range.
How should the anode-heatsink tab be mounted for optimal thermal performance?
The anode tab must be soldered to a minimum 200 mm² copper area with ≥2 thermal vias (0.3 mm diameter, filled) connecting to inner ground planes. Per Diodes' layout guidelines, the recommended pad dimensions are 3.3 mm × 11.0 mm (G × X1), ensuring RθJC remains at 0.9 °C/W under continuous 8 W steady-state dissipation.
Is DM8W24AQ-13 compatible with lead-free reflow profiles?
Yes-DM8W24AQ-13 uses matte tin plating compliant with J-STD-020 moisture sensitivity Level 1 and withstands peak reflow temperatures up to 260 °C. The device passes IPC-J-STD-002B solderability testing and maintains surge performance after three reflow cycles.
Does this TVS diode require external series impedance for safe operation?
No external series resistor is required for clamping function, but a fuse or polyfuse (e.g., 30 A slow-blow) is mandatory upstream to clear sustained overcurrent faults. The device is rated for 700 A non-repetitive IFSM (8.3 ms half-sine), but continuous fault current must be interrupted within 100 ms to prevent thermal runaway.
DM8W24AQ-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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 170A
- 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
DM8W24AQ-13 FAQ
1.How can I place an order for DM8W24AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W24AQ-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 DM8W24AQ-13 reliable?
The price and inventory of DM8W24AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W24AQ-13 is usually 5 days.
3.What payment methods are accepted for DM8W24AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W24AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W24AQ-13?
DM8W24AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W24AQ-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 DM8W24AQ-13?
For technical support, including DM8W24AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W24AQ-13 requirements.
6.How does Aetrix verify that DM8W24AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM8W24AQ-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 DM8W24AQ-13 meets industry standards.
7.What is the process for return or replacement of DM8W24AQ-13?
All DM8W24AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W24AQ-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 DM8W24AQ-13 part is unused and in its original packaging.
Return procedure for DM8W24AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W24AQ-13 Tags
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