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Diodes Incorporated DM8W24A-13
- Part No.:
- DM8W24A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W24A-13.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:8,810
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Product details
Overview
DM8W24A-13 from Diodes Incorporated is a unidirectional 6600W surface-mount transient voltage suppressor (TVS) designed for automotive load dump and ISO7637-2 surge protection in 24V systems. It features a 24V reverse standoff voltage (VRWM), 26.7–29.5V breakdown range (VBR), 38.9V clamping voltage (VC) at 170A peak pulse current, and operates from –55°C to +175°C. Used in engine control units and body control modules to safeguard power rails against high-energy transients.
For engineers reviewing the DM8W24A-13 datasheet, DM8W24A-13 pinout, DM8W24A-13 application, or DM8W24A-13 equivalent, key selection criteria include its DO-218 package thermal resistance (RθJC = 0.9°C/W), 8W steady-state power dissipation at TC = +25°C, compliance with ISO16750-2 Pulse A/B and ISO7637-2 Pulse 1/2a/3a/3b, and automotive-grade qualification per AEC-Q standards.
Technical Context
This TVS diode employs an avalanche breakdown mechanism optimized for high-current, short-duration transients-specifically 10/1000µs and 10ms exponential waveforms per ISO16750-2 Load Dump testing. Its unidirectional polarity and heatsink-anode configuration enable direct mounting to metal chassis for enhanced thermal management.
The device delivers stable clamping performance across temperature: VC remains ≤38.9V at IPP = 170A up to TJ = +175°C, and leakage stays ≤150µA at VRWM = 24V even at maximum junction temperature. Its low RθJC (0.9°C/W) supports sustained 8W average power dissipation when properly heatsinked.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 24 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR (min/max) | 26.7 V / 29.5 V - Breakdown occurs within this range at 5 mA test current, defining turn-on threshold |
| VC @ IPP | 38.9 V @ 170 A - Clamped voltage during 10/1000µs surge, limiting downstream component stress |
| PPK | 6600 W - Peak non-repetitive surge power handling capability under standardized waveform |
| RθJC | 0.9 °C/W - Thermal resistance from junction to case, enabling efficient heat transfer to heatsink |
| TJ Range | –55°C to +175°C - Full operational junction temperature range, validated for under-hood automotive use |
| IFSM | 700 A - Peak forward surge current rating for 8.3ms half-sine wave, supporting high-energy fault events |
Pinout & Package
Package: DO-218 (Type E), molded plastic UL 94V-0 housing with matte tin-plated terminals. Anode is connected to the heatsink tab; cathode is marked by a bar on the top surface. Weight: 2.74 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Current Entry Point (for Reverse Surge Mode) | Electrically and thermally coupled to PCB copper pour or metal chassis; must be soldered to thermal pad for rated power handling |
| Cathode (Top Surface Bar) | Current Exit Point (for Reverse Surge Mode) | Connected to protected line (e.g., 24V rail); clamps voltage by conducting surge current to ground/anode path |
Key Features
| Feature | Design Value |
|---|---|
| 6600W Peak Pulse Power | Enables single-device protection against severe ISO16750-2 Load Dump surges (up to 100V, 10ms) without cascading failure |
| TJ = +175°C Rating | Validates operation in high-temperature engine bay environments without derating loss or reliability degradation |
| DO-218 Thermal Performance | 0.9°C/W junction-to-case resistance allows 8W continuous dissipation with minimal heatsink area |
| Automotive Qualification | AEC-Q qualified per JEDEC standards, ensuring long-term reliability in safety-critical vehicle subsystems |
| RoHS & Halogen-Free | Meets EU RoHS 3 and Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb), supporting eco-compliant manufacturing |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) 24V Rail |
|---|---|
Use Scenario: Protects microcontroller power supply from alternator load dump transients during battery disconnection. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24V input and chassis ground, clamping surges before they reach DC/DC converters. Use Value: Limits clamped voltage to 38.9V at 170A, preventing overvoltage damage to 40V-rated input stages of buck regulators. | Use Scenario: Shields LIN bus power domain and window lift motor drivers from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling). IC Role / Device Role / Timing Role: Primary surge suppression element on main 24V distribution node feeding multiple sub-systems. Use Value: Withstands 700A IFSM and maintains <150µA leakage at 24V even at +175°C, ensuring low standby current and robustness over vehicle lifetime. |
| ADAS Camera Power Supply | Commercial Vehicle Telematics Unit |
Use Scenario: Safeguards image sensor and ISP power inputs against repeated low-energy transients in stop-start cycles. IC Role / Device Role / Timing Role: Fast-response TVS integrated into compact front-end filter stage upstream of LDOs. Use Value: 38.9V clamping ensures headroom for 3.3V/5V regulators with tight input tolerances, while DO-218 footprint minimizes board space. | Use Scenario: Secures GPS/GSM modem power interface exposed to harsh fleet-duty electrical noise and jump-start events. IC Role / Device Role / Timing Role: High-reliability transient suppressor mounted directly to metal enclosure for lowest possible inductance path. Use Value: 0.9°C/W RθJC enables stable operation at full 8W PM(AV) without forced air, critical for sealed outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Lower PPK (400W), DO-214AC package, RθJC ≈ 50°C/W, no AEC-Q qualification | Suitable only for non-automotive, low-energy surges; cannot meet ISO16750-2 Load Dump | Select when cost sensitivity outweighs automotive compliance and surge energy requirements |
| SM8T24A | Same PPK (6600W), DO-218AB package, slightly higher VC (40.2V @ 170A), AEC-Q200 qualified | Compatible with identical mounting but requires verification of layout clearance due to different outline | Prefer when cross-manufacturer second sourcing is required and 1.3V higher clamping is acceptable |
Compared with SMAJ24A and SM8T24A, DM8W24A-13 offers superior thermal performance (0.9°C/W vs. ~50°C/W or ~1.2°C/W), tighter clamping (38.9V), and explicit ISO16750-2 Pulse A/B validation-making it optimal for high-reliability 24V automotive power rail protection where thermal margin and waveform compliance are critical.
Availability
DM8W24A-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera power supplies, and commercial vehicle telematics requiring stable component supply across extended production lifecycles.
Supply support for DM8W24A-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.
DM8W24A-13 belongs to the DM8WxxA series of high-power TVS diodes engineered specifically for ISO16750-2 and ISO7637-2 compliance in 12V/24V automotive power systems-prioritizing thermal robustness, surge repeatability, and under-hood temperature resilience.
FAQ
What is the maximum clamping voltage of DM8W24A-13 under standard test conditions?
The maximum clamping voltage (VC) is 38.9 V when subjected to a 10/1000 µs waveform at a peak pulse current (IPP) of 170 A. This value is measured at TA = +25°C and represents the upper limit of voltage seen by downstream circuitry during a defined surge event, ensuring compatibility with 40 V-rated power management ICs.
Can DM8W24A-13 be used in bidirectional configurations?
No. DM8W24A-13 is unidirectional only, with the anode tied to the heatsink tab and cathode marked by a bar on the top surface. Bidirectional protection requires two devices in series opposition or a dedicated bidirectional TVS such as the DM8W24CA series, which is not pin-compatible or electrically interchangeable.
How does the DO-218 package contribute to thermal performance?
The DO-218 (Type E) package uses a large metal heatsink tab that serves as both the anode terminal and primary thermal conduction path. With a measured RθJC of 0.9°C/W, it transfers heat efficiently to PCB copper pours or external heatsinks-enabling full 8 W steady-state power dissipation without airflow, unlike smaller packages like DO-214AC that exceed thermal limits above 0.5 W.
Is DM8W24A-13 compliant with automotive qualification standards?
Yes. DM8W24A-13 is qualified to AEC-Q200 stress test standards for passive components and meets ISO16750-2 (Pulse A and B) and ISO7637-2 (Pulse 1, 2a, 3a, 3b) requirements. It is also RoHS 3 compliant and halogen-free per Diodes' "Green" definition, making it suitable for Tier 1 automotive supply chains.
DM8W24A-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
DM8W24A-13 FAQ
1.How can I place an order for DM8W24A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W24A-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 DM8W24A-13 reliable?
The price and inventory of DM8W24A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W24A-13 is usually 5 days.
3.What payment methods are accepted for DM8W24A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W24A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W24A-13?
DM8W24A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W24A-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 DM8W24A-13?
For technical support, including DM8W24A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W24A-13 requirements.
6.How does Aetrix verify that DM8W24A-13 is sourced from the original manufacturer or authorized distributors?
All DM8W24A-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 DM8W24A-13 meets industry standards.
7.What is the process for return or replacement of DM8W24A-13?
All DM8W24A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W24A-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 DM8W24A-13 part is unused and in its original packaging.
Return procedure for DM8W24A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W24A-13 Tags
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