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Diodes Incorporated DM8W30AQ-13
- Part No.:
- DM8W30AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W30AQ-13.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:1,429
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Product details
Overview
DM8W30AQ-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 30 V reverse standoff voltage (VRWM), 48.4 V clamping voltage (VC) at 136 A peak pulse current (Ipp), 6600 W peak pulse power (10/1000 µs), and operates from –55 °C to +175 °C - enabling robust protection of 12 V automotive power rails against high-energy transients.
For engineers reviewing the DM8W30AQ-13 datasheet, DM8W30AQ-13 pinout, DM8W30AQ-13 application, or DM8W30AQ-13 equivalent, key selection criteria include clamping performance under ISO16750-2 Pulse 5a (load dump), thermal resistance (RθJC = 0.9 °C/W), DO-218 package mounting constraints, and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for unidirectional surge suppression in high-temperature automotive environments. Its low RθJC (0.9 °C/W) enables efficient heat transfer to the heatsink-anode structure, supporting sustained operation at TJ = +175 °C. The device responds to 10/1000 µs surges with sub-49 V clamping up to 136 A, meeting ISO16750-2 Pulse 5a requirements for 12 V systems.
It is rated for 8 W steady-state power dissipation at TC = +25 °C and derates linearly above ambient, maintaining ≥5200 W peak pulse capability at TC = +125 °C per Figure 1. Polarity is defined by heatsink-as-anode configuration, requiring PCB layout alignment with cathode marking (bar) on the case top.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; matches nominal 12 V system with safety margin for battery ripple. |
| VC @ IPP | 48.4 V - Clamped voltage at 136 A (10/1000 µs); ensures downstream ICs see <50 V during load-dump events. |
| PPK | 6600 W - Peak surge power handling (10/1000 µs); exceeds ISO16750-2 Pulse 5a requirement of ~5000 W. |
| RθJC | 0.9 °C/W - Junction-to-case thermal resistance; enables effective heatsinking via anode pad, critical for repeated surge duty. |
| TJ Range | –55 °C to +175 °C - Full automotive temperature range compliance; supports under-hood placement without derating. |
| IFSM | 700 A - 8.3 ms single half-sine surge rating; validates robustness against alternator turn-off transients. |
Pinout & Package
Package: DO-218 (Type E), molded plastic case (UL 94V-0), 2.74 g weight. Anode is electrically connected to the heatsink (case), cathode is the marked terminal (bar indicator on top surface). Requires copper pour on anode pad for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Positive connection point / thermal path | Must be soldered to large copper area for thermal conduction; serves as primary current entry during clamping. |
| Cathode (Marked Terminal) | Surge current return path | Connected to protected line (e.g., battery rail); polarity-sensitive - reverse connection disables protection. |
Key Features
| Feature | Design Value |
|---|---|
| 6600 W peak pulse power (10/1000 µs) | Enables single-device protection against worst-case ISO16750-2 load dump without parallel stacking. |
| AEC-Q101 qualified & PPAP capable | Validated for automotive production use with full change control and IATF 16949 manufacturing traceability. |
| Glass-passivated die construction | Ensures long-term stability and moisture resistance in harsh under-hood environments (MSL Level 1). |
| Lead-free, halogen-free, antimony-free "Green" design | Complies with RoHS 3 (2015/863/EU) and automotive environmental mandates without compromising surge performance. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects microcontroller power supply from alternator load-dump spikes during ignition-off events. IC Role / Device Role / Timing Role: Unidirectional TVS clamps transients on 12 V input before LDO regulators. Use Value: Limits voltage to ≤48.4 V at 136 A, preventing latch-up or damage to 5 V/3.3 V domain ICs downstream. | Use Scenario: Shields CAN transceivers and power management ICs from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling). IC Role / Device Role / Timing Role: Fast-response overvoltage clamp placed directly at BCM main power entry point. Use Value: Sub-50 V clamping preserves signal integrity on 12 V bus while sustaining 700 A surge current capability. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Electric Power Steering (EPS) Motor Driver |
Use Scenario: Guards image sensor power and interface lines against battery voltage transients during cold-crank or jump-start conditions. IC Role / Device Role / Timing Role: Primary front-end surge protector on 12 V input to camera power management IC. Use Value: Maintains operation at TJ = +175 °C, ensuring reliability in sealed, thermally constrained camera housings. | Use Scenario: Absorbs regenerative energy spikes and load-dump surges generated by brushed/BLDC motor commutation in EPS systems. IC Role / Device Role / Timing Role: High-current TVS mounted on motor driver PCB near power stage MOSFETs. Use Value: 0.9 °C/W thermal resistance allows direct heatsink coupling, enabling >1000 surge cycles without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Lower PPK (400 W), DO-214AC package, RθJC not specified, no AEC-Q101 qualification | Rated only for general industrial surge; insufficient for ISO16750-2 Pulse 5a load dump | Select only for non-automotive, low-energy transient environments where cost outweighs reliability. |
| SMCJ30A | Higher PPK (1500 W), DO-214AB package, RθJC ≈ 2.5 °C/W, AEC-Q101 qualified (some variants) | Limited to moderate load-dump energy; requires larger board area due to lower power density | Use when 6600 W rating is unnecessary and DO-218 footprint is incompatible with existing layout. |
Compared with SMAJ30A and SMCJ30A, DM8W30AQ-13 delivers 4.4× higher peak power in the same footprint class, validated thermal performance for under-hood use, and full automotive change control - making it the only option qualified for Tier-1 ECU and ADAS power rail protection.
Availability
DM8W30AQ-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 programs.
Supply support for DM8W30AQ-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The DM8WxxAQ series belongs to Diodes' automotive-grade TVS portfolio, engineered specifically for high-reliability 12 V and 24 V vehicle electrical systems subject to ISO16750-2 and ISO7637-2 surge stress.
FAQ
What is the maximum clamping voltage of DM8W30AQ-13 under ISO16750-2 Pulse 5a conditions?
The DM8W30AQ-13 clamps to 48.4 V at 136 A (10/1000 µs waveform), which directly satisfies ISO16750-2 Pulse 5a requirements for 12 V systems. This value is measured per JEDEC standard test conditions and confirmed in the DS41002 datasheet Table 1. It remains stable across the full operating temperature range up to +175 °C.
Can DM8W30AQ-13 be used in bidirectional surge protection circuits?
No - DM8W30AQ-13 is a unidirectional TVS diode with anode-connected heatsink and cathode-marked terminal. It conducts only during positive transients on the cathode side. For bidirectional protection, two devices must be used in series opposition, or a dedicated bidirectional part such as DM8W30CAQ-13 should be selected.
How does the DO-218 (Type E) package improve thermal performance versus standard SMB/SMA packages?
The DO-218 package integrates the anode directly into a large metal heatsink surface, achieving RθJC = 0.9 °C/W - over 2× better than typical SMB (RθJC ≈ 2.0–2.5 °C/W). This allows >70% higher sustained surge energy dissipation and eliminates need for external heatsinks in most automotive applications.
Is DM8W30AQ-13 compliant with both RoHS 3 and AEC-Q101 standards?
Yes - DM8W30AQ-13 meets RoHS 3 (2015/863/EU) with <900 ppm bromine, <900 ppm chlorine, and <1000 ppm antimony, and is fully AEC-Q101 qualified. It is manufactured in IATF 16949-certified facilities and supports PPAP documentation for automotive production release.
DM8W30AQ-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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 136A
- 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
DM8W30AQ-13 FAQ
1.How can I place an order for DM8W30AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W30AQ-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 DM8W30AQ-13 reliable?
The price and inventory of DM8W30AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W30AQ-13 is usually 5 days.
3.What payment methods are accepted for DM8W30AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W30AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W30AQ-13?
DM8W30AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W30AQ-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 DM8W30AQ-13?
For technical support, including DM8W30AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W30AQ-13 requirements.
6.How does Aetrix verify that DM8W30AQ-13 is sourced from the original manufacturer or authorized distributors?
All DM8W30AQ-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 DM8W30AQ-13 meets industry standards.
7.What is the process for return or replacement of DM8W30AQ-13?
All DM8W30AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W30AQ-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 DM8W30AQ-13 part is unused and in its original packaging.
Return procedure for DM8W30AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W30AQ-13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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