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Diodes Incorporated DM6W33A-13
- Part No.:
- DM6W33A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
DM6W33A-13.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO218
- Quantity:
- Payment:
- Shipping:
Inventory:6,143
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Product details
Overview
DM6W33A-13 from Diodes Incorporated is a surface-mount transient voltage suppressor (TVS) diode designed for automotive load dump and ISO 7637-2 surge protection in 12V/24V systems. It features a 33 V reverse standoff voltage (VRWM), 53.3 V clamping voltage (VC) at 86 A peak pulse current (IPP), and 4600 W peak pulse power dissipation (10/1000 µs waveform). Its DO-218 package supports high-reliability underhood applications including engine control units and body electronics.
For engineers reviewing the DM6W33A-13 datasheet, DM6W33A-13 pinout, DM6W33A-13 application, or DM6W33A-13 equivalent, key selection criteria include clamping performance at 86 A IPP, thermal resistance of 1.0 °C/W (junction-to-case), compliance with ISO16750-2 load dump and ISO7637-2 Pulse 1/2a/3a/3b, and automotive-grade qualification per AEC-Q standards.
Technical Context
This unidirectional TVS diode operates with anode-connected heatsink polarity and delivers robust surge immunity using silicon avalanche technology. Its 36.7–40.6 V breakdown voltage (VBR) ensures precise triggering above system operating voltage while maintaining low leakage (<10 µA at VRWM) across -55°C to +175°C junction temperature range.
The device sustains 600 A non-repetitive forward surge current (IFSM) and exhibits stable clamping behavior up to 175°C case temperature, supported by low thermal resistance (1.0 °C/W) and 6 W steady-state power dissipation at TC = +25°C. Its 10/1000 µs waveform rating aligns with automotive load dump test profiles defined in ISO16750-2 Annex D.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 33 V - Maximum continuous reverse operating voltage before clamping begins; matches 24V automotive battery nominal + tolerance margin. |
| VBR (min/max) | 36.7 V / 40.6 V - Breakdown occurs within this range at 5 mA test current; ensures reliable turn-on without premature conduction. |
| VC @ IPP | 53.3 V at 86 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress below 55 V absolute maximum ratings. |
| PPK | 4600 W - Peak pulse power handling capability; meets ISO16750-2 Load Dump Class III (12V) and Class II (24V) requirements. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; enables effective heat transfer to PCB copper pour or heatsink for sustained surge duty. |
| TJ Range | -55°C to +175°C - Full automotive underhood temperature operation; qualified per AEC-Q reliability standards. |
| IFSM | 600 A - Single half-sine surge current rating (8.3 ms); withstands alternator load dump events without failure. |
Pinout & Package
Package: DO-218 (Type E), surface-mount, molded plastic UL 94V-0 housing; heatsink tab is anode terminal; cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink Tab) | Positive surge return path | Electrically connected to metal tab; must be soldered to large copper area for thermal and current conduction. |
| Cathode (Top Marked Pin) | Surge clamping node | Connected to protected line (e.g., battery rail); clamps transients to anode when voltage exceeds VRWM. |
Key Features
| Feature | Design Value |
|---|---|
| 4600 W peak pulse power | Enables single-device protection against ISO16750-2 Load Dump (up to 35 V, 100 ms exponential) without derating. |
| Low RθJC (1.0 °C/W) | Reduces junction temperature rise by ~86°C during 86 A clamping event, extending reliability in high-ambient environments. |
| AEC-Q qualified | Validated for automotive use per JEDEC standards; supports long-term deployment in engine control, ADAS, and infotainment modules. |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb); suitable for global OEM supply chains. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects microcontroller and CAN transceiver power inputs from alternator load dump surges during battery disconnect events. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and DC-DC input stage. Use Value: Limits transient voltage to ≤53.3 V at 86 A, preventing latch-up or overvoltage damage to 5 V/3.3 V regulators and logic ICs. |
Use Scenario: Shields LIN bus transceivers and door module MCUs from ISO7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive discharge). IC Role / Device Role / Timing Role: Primary surge suppression device on 12 V supply line upstream of LDOs and interface ICs. Use Value: Maintains <10 µA leakage at 33 V VRWM, minimizing standby current impact on vehicle battery drain budget. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Infotainment Head Unit Power Supply |
Use Scenario: Safeguards image sensor and ISP power rails against cranking-induced transients and jump-start spikes in rear-view cameras. IC Role / Device Role / Timing Role: Fast-response clamping diode on 5 V or 3.3 V camera module input, mounted near connector entry point. Use Value: Achieves 53.3 V clamping at 86 A with <1 ns response time, preserving signal integrity and avoiding reset during transient events. |
Use Scenario: Guards USB-C PD controller and audio codec power supplies from ignition cycling surges and accessory load switching noise. IC Role / Device Role / Timing Role: Secondary-level TVS on intermediate 5 V/12 V distribution net, downstream of main fuse and primary TVS. Use Value: Supports 175°C max junction temperature, enabling placement near heat-generating processors without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A | Lower PPK (400 W), DO-214AC package, RθJC ≈ 45 °C/W | Not rated for ISO16750-2 load dump; limited to lower-energy ISO7637-2 pulses | Select only for cost-sensitive non-automotive 12 V systems with <100 A surge exposure. |
| SMCJ33A | Same PPK (1500 W), DO-214AB package, RθJC ≈ 12 °C/W, lower IFSM (100 A) | Insufficient for full load dump; fails at >100 A surges per ISO16750-2 Annex D | Use where space allows larger footprint but thermal performance and surge margin are secondary to cost. |
Compared with SMAJ33A and SMCJ33A, DM6W33A-13 provides 3× higher peak power and 10× lower thermal resistance, enabling direct load dump protection without external heatsinking-critical for compact, high-temperature automotive modules.
Availability
DM6W33A-13 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS camera systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DM6W33A-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 and manufacturing operations across Asia and the Americas.
DM6W33A-13 belongs to Diodes' high-power automotive TVS portfolio, engineered specifically for ISO16750-2 and ISO7637-2 compliance in underhood and chassis-mounted electronic control units.
FAQ
What is the polarity configuration of DM6W33A-13?
The DM6W33A-13 is a unidirectional TVS diode with anode connected to the metal heatsink tab and cathode identified by a bar marking on the top surface. This configuration requires the anode to be tied to the protected circuit's ground or low-side reference, while the cathode connects to the line being protected.
Does DM6W33A-13 meet AEC-Q200 requirements?
DM6W33A-13 is qualified to JEDEC standards referenced in AEC-Q200 for high-reliability automotive applications. It undergoes temperature cycling, humidity testing, and surge endurance validation per AEC-Q200 Rev D, and is documented as automotive-compliant in Diodes' product definitions portal.
Can DM6W33A-13 replace SM8S33A in existing designs?
No-SM8S33A uses a different package (DO-218AB vs. DO-218 Type E), has distinct thermal pad layout, and is rated for 6600 W PPK. While both target load dump, DM6W33A-13's lower PPK and verified 4600 W rating require revalidation of thermal margin and clamping margin in any drop-in replacement scenario.
What is the maximum recommended PCB copper area for the anode tab?
Diodes recommends ≥200 mm² of 2 oz copper connected directly to the anode tab for optimal thermal performance. The datasheet specifies that thermal resistance degrades significantly below 100 mm², and full 4600 W rating assumes adequate copper pour per DO-218 (Type E) thermal guidelines.
DM6W33A-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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 86A
- Power - Peak Pulse:
- 4600W (4.6kW)
- 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
DM6W33A-13 FAQ
1.How can I place an order for DM6W33A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DM6W33A-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 DM6W33A-13 reliable?
The price and inventory of DM6W33A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM6W33A-13 is usually 5 days.
3.What payment methods are accepted for DM6W33A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM6W33A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM6W33A-13?
DM6W33A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM6W33A-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 DM6W33A-13?
For technical support, including DM6W33A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM6W33A-13 requirements.
6.How does Aetrix verify that DM6W33A-13 is sourced from the original manufacturer or authorized distributors?
All DM6W33A-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 DM6W33A-13 meets industry standards.
7.What is the process for return or replacement of DM6W33A-13?
All DM6W33A-13 units undergo pre-shipment inspection (PSI). If there is an issue with DM6W33A-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 DM6W33A-13 part is unused and in its original packaging.
Return procedure for DM6W33A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DM6W33A-13 Tags
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