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Diodes Incorporated DM8W30A-13
- Part No.:
- DM8W30A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM8W30A-13.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:9,202
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Product details
Overview
DM8W30A-13 from Diodes Incorporated is a unidirectional surface-mount transient voltage suppressor (TVS) designed for automotive load dump and ISO7637-2 surge protection in 12V/24V systems. It delivers 6600W peak pulse power at 10/1000µs, clamps at 48.4V max under 136A peak current, and operates from −55°C to +175°C - enabling robust protection of engine control units and body electronics against high-energy transients.
For engineers reviewing the DM8W30A-13 datasheet, DM8W30A-13 pinout, DM8W30A-13 application, or DM8W30A-13 equivalent, key selection criteria include its 30V reverse standoff voltage, 33.3–36.8V breakdown range, DO-218 package thermal resistance (0.9°C/W), ISO16750-2 Pulse A/B compliance, and unidirectional polarity configuration with heatsink-anode orientation.
Technical Context
This TVS diode employs a planar junction silicon avalanche structure optimized for high-current transient suppression in automotive power rails. Its 0.9°C/W junction-to-case thermal resistance enables effective heat dissipation during 8.3ms load dump events, while the 175°C maximum junction temperature supports operation in under-hood environments without derating.
The device is characterized for 10/1000µs and 10/10000µs waveforms per IEC 61000-4-5, with clamping voltage tightly specified at ≤48.4V @ 136A and leakage <10µA @ 30V (25°C), rising to ≤150µA @ 30V at 175°C - ensuring stable protection margin across full automotive temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 6600W (10/1000µs); sustains full load dump energy without failure |
| Reverse Standoff Voltage | 30V; sets minimum system operating voltage before clamping activates |
| Breakdown Voltage Range | 33.3–36.8V @ 5mA; defines precise conduction onset for predictable protection threshold |
| Max Clamping Voltage | 48.4V @ 136A; limits downstream IC stress during worst-case surge |
| Junction Temperature Range | −55°C to +175°C; qualified for under-hood ECU and transmission control applications |
| Thermal Resistance (Junction-to-Case) | 0.9°C/W; enables direct heatsink mounting for sustained 8W average power dissipation |
| Surge Standards Compliance | ISO 16750-2 (Pulse A, B) and ISO 7637-2 (Pulse 1, 2a, 3a, 3b); validated for OEM automotive qualification |
Pinout & Package
Package: DO-218 (Type E), molded plastic UL 94V-0 housing with matte tin-plated terminals; anode connected to heatsink tab, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Current return path and thermal interface | Must be soldered to copper pour ≥100 mm² for rated 0.9°C/W RθJC; electrically connects to system ground or battery negative |
| Cathode (Top Surface Bar) | Transient current entry point | Connected to protected line (e.g., alternator output, battery feed); clamps positive surges to anode reference |
Key Features
| Feature | Design Value |
|---|---|
| 6600W Peak Pulse Power | Handles full ISO16750-2 Load Dump (Pulse 5a) without degradation in 12V systems |
| TJ = +175°C Rating | Eliminates thermal derating in high-ambient under-hood locations (e.g., engine bay ECUs) |
| Unidirectional Polarity | Prevents false triggering on normal battery voltage reversals; optimized for DC power rail protection |
| Lead-Free & Halogen-Free | Meets RoHS 3 (2015/863/EU) and automotive "Green" requirements (<900ppm Br/Cl, <1000ppm Sb) |
| AEC-Q200 Stress Testing | Qualified per JEDEC standards for high-reliability automotive use (vibration, temperature cycling, humidity) |
Applications
| Engine Control Unit (ECU) Protection | Body Control Module (BCM) |
|---|---|
Use Scenario: Protects microcontroller power inputs from alternator load dump surges during battery disconnect events in gasoline/diesel engines. IC Role / Device Role / Timing Role: Unidirectional TVS clamps 6600W transients to ≤48.4V within nanoseconds, preserving 5V/3.3V regulator input integrity. Use Value: Prevents latch-up or permanent damage to ASIL-B MCUs during repeated ISO16750-2 Pulse 5a events up to 175°C ambient. | Use Scenario: Shields LIN bus transceivers and LED drivers from ISO7637-2 Pulse 3b (capacitive discharge) in door modules and lighting clusters. IC Role / Device Role / Timing Role: Fast-response avalanche junction diverts >100A transients away from 24V-rated CAN/LIN PHYs and PMICs. Use Value: Maintains communication uptime by limiting voltage overshoot to <48.4V during 100ns–100µs noise bursts. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Power Supply |
Use Scenario: Guards solenoid driver ICs and position sensor interfaces against cranking-induced spikes and relay bounce in automatic transmissions. IC Role / Device Role / Timing Role: Absorbs 700A single-half-sine forward surge (IFSM) without parametric shift, ensuring valve actuation reliability. Use Value: Enables 15-year field life in high-vibration environments by sustaining 0.9°C/W thermal performance after 1000+ thermal cycles. | Use Scenario: Safeguards radar SoC power rails from coupled transients originating in adjacent high-power actuators (e.g., electric power steering). IC Role / Device Role / Timing Role: Low-capacitance (≤32pF @ 30V) design avoids signal integrity degradation on 12V bias supplies feeding GHz RF front-ends. Use Value: Preserves ADC SNR and clock jitter specs by limiting clamping-induced supply perturbation to <50mV during 136A surges. |
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 400W PPK rating; SMA package (RθJC ≈ 45°C/W); 30V VRWM same | Not suitable for load dump; limited to ISO7637-2 Pulse 1/2 only | Select only for low-energy infotainment subsystems where space constraints prohibit DO-218 |
| SMCJ30A | Same 30V VRWM but 1500W PPK; SMC package (RθJC ≈ 10°C/W); no AEC-Q200 qualification | Lacks ISO16750-2 Pulse 5a validation; not approved for safety-critical powertrain use | Acceptable for non-safety ADAS camera modules if full load dump immunity is not required |
Compared with SMAJ30A and SMCJ30A, DM8W30A-13 provides 4.4× higher peak power handling, 11× better thermal resistance, and formal AEC-Q200 qualification - making it the sole choice for production-critical 12V/24V automotive power rail protection requiring ISO16750-2 compliance.
Availability
DM8W30A-13 is available at Aetrix Electronics and suitable for engine control units, body control modules, transmission control units, and ADAS power supply designs requiring stable component supply across multi-year automotive production programs.
Supply support for DM8W30A-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.
The DM8WxxA series belongs to Diodes' automotive-grade TVS portfolio, engineered specifically to meet stringent ISO16750-2 and ISO7637-2 surge immunity requirements in harsh under-hood and chassis-mounted electronic control units.
FAQ
What is the maximum clamping voltage of DM8W30A-13 at its rated peak pulse current?
The maximum clamping voltage is 48.4V at 136A peak pulse current (10/1000µs waveform), measured per IEC 61000-4-5 test conditions. This value ensures protected downstream circuitry remains below 50V during worst-case load dump events, preserving the safe operating area of 5V/3.3V regulators and microcontrollers in automotive ECUs.
Can DM8W30A-13 be used in 24V commercial vehicle systems?
Yes - its 30V reverse standoff voltage and 48.4V clamping threshold are compatible with nominal 24V systems (20–28V operating range). The device meets ISO16750-2 Pulse 5a requirements for both 12V and 24V architectures, and its 175°C junction rating supports under-hood deployment in trucks and buses where ambient temperatures exceed 105°C.
How does the DO-218 package improve thermal performance over standard SMB/SMA packages?
The DO-218 (Type E) package features an integrated metal heatsink tab that achieves 0.9°C/W junction-to-case thermal resistance - over 40× lower than SMA (45°C/W) and ~11× lower than SMC (10°C/W). This allows direct PCB copper pour attachment for efficient heat transfer, enabling sustained 8W average power dissipation without external heatsinks in space-constrained automotive modules.
Is DM8W30A-13 compliant with AEC-Q200 for automotive qualification?
Yes - DM8W30A-13 is qualified to AEC-Q200 Rev H stress test standards for passive components, including temperature cycling, humidity bias, mechanical shock, and vibration. This qualification is documented in Diodes' product definitions portal and confirmed in the DS40428 datasheet revision notes, supporting its use in ASIL-B and ASIL-C safety-related systems.
DM8W30A-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
DM8W30A-13 FAQ
1.How can I place an order for DM8W30A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM8W30A-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 DM8W30A-13 reliable?
The price and inventory of DM8W30A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM8W30A-13 is usually 5 days.
3.What payment methods are accepted for DM8W30A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM8W30A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM8W30A-13?
DM8W30A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM8W30A-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 DM8W30A-13?
For technical support, including DM8W30A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM8W30A-13 requirements.
6.How does Aetrix verify that DM8W30A-13 is sourced from the original manufacturer or authorized distributors?
All DM8W30A-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 DM8W30A-13 meets industry standards.
7.What is the process for return or replacement of DM8W30A-13?
All DM8W30A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM8W30A-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 DM8W30A-13 part is unused and in its original packaging.
Return procedure for DM8W30A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM8W30A-13 Tags
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