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Vishay 6DFN33A-M3/H
- Part No.:
- 6DFN33A-M3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
6DFN33A-M3/H.pdf
- Description:
- 600W,33V 5%, DFN3820A TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,390
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Product details
Overview
6DFN33A-M3/H from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in DFN3820A package, with 33 V nominal breakdown voltage (VBR = 31.4–34.7 V), 28.2 V stand-off voltage (VWM), 45.7 V max clamping voltage at 13.1 A peak pulse current, and 600 W peak pulse power (10/1000 µs). It protects MOSFETs and sensor signal lines in industrial motor drives against lightning-induced transients.
For engineers reviewing the 6DFN33A-M3/H datasheet, 6DFN33A-M3/H pinout, 6DFN33A-M3/H application, or 6DFN33A-M3/H equivalent, key selection criteria include unidirectional polarity, MSL Level 1 moisture sensitivity, side-wettable flanks for AOI, 175 °C max junction temperature, and compatibility with SMP (DO-220AA) footprint.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for low-clamp, high-energy surge suppression. Its unidirectional configuration provides precise reverse-biased protection for DC-biased signal or power rails, with thermal resistance RθJM of 5 °C/W enabling efficient heat transfer to the PCB mount pad.
The device meets IEC 61000-4-2 ESD immunity up to ±30 kV (contact/air), operates across -65 °C to +175 °C, and features halogen-free, RoHS-compliant construction with matte tin-plated terminals qualified per JESD 201 Class 2 whisker test.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 / 33.0 / 34.7 V - ensures reliable turn-on above 28.2 V operating rail without false triggering |
| VWM | 28.2 V - maximum continuous reverse voltage before leakage exceeds 1 μA |
| VC @ IPPM | 45.7 V - clamps 13.1 A surge to safe level for downstream 3.3 V/5 V/12 V ICs |
| PPPM | 600 W (10/1000 µs) - handles automotive load-dump and industrial switching transients |
| TJ max | +175 °C - supports operation in under-hood or enclosed industrial enclosures |
| RθJM | 5 °C/W - enables effective thermal coupling to copper pour on FR4 PCB |
| ESD Rating | ±30 kV contact/air (IEC 61000-4-2) - exceeds Level 4 system-level ESD requirements |
Pinout & Package
Package: DFN3820A - 2-terminal, leadless, side-wettable flanks, 3.95 mm × 2.18 mm × 0.88 mm, anode/cathode marked by color band, heatsink = anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (heatsink pad) | Common reference terminal | Electrically and thermally connected to PCB copper pour; must be soldered for thermal performance and electrical return path |
| Cathode (marked side) | Transient current sink | Connected to protected line; conducts surge current to anode during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joint quality without X-ray |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking |
| Low-profile height (0.88 mm) | Supports ultra-thin designs in space-constrained consumer and medical devices |
| Halogen-free, RoHS, Pb-free (M3) | Fulfills environmental compliance for global industrial and automotive supply chains |
| Compatible with SMP (DO-220AA) | Permits drop-in replacement in existing layouts using standard DO-220AA footprints |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and current-sense amplifiers from inductive kickback during IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches sensitive analog front-ends. Use Value: Limits voltage excursion to ≤45.7 V during 13.1 A surges, preserving 3.3 V logic integrity and preventing latch-up. | Use Scenario: Guarding LIN bus transceivers and microcontroller I/O pins against battery dump and load-switching spikes. IC Role / Device Role / Timing Role: Standby-mode protector on 12 V supply rails and bidirectional data lines. Use Value: Withstands 30 kV ESD and 600 W surges while maintaining <1 μA leakage at 28.2 V, ensuring low-power sleep mode stability. |
| Medical Sensor Interfaces | Telecom Power Supply Inputs |
Use Scenario: Shielding analog signal paths (e.g., thermistor, pressure sensor outputs) from EMI-coupled transients in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) shunt clamp on low-voltage differential inputs. Use Value: Clamps fast-rising transients without distorting mV-level sensor signals due to minimal junction capacitance and sub-1 μA leakage. | Use Scenario: Secondary-side overvoltage protection on 24 V/48 V telecom DC-DC converter outputs feeding baseband processors. IC Role / Device Role / Timing Role: Final-stage surge limiter before point-of-load regulators. Use Value: Delivers 600 W pulse handling with 5 °C/W junction-to-mount thermal resistance, enabling sustained reliability under repeated surge stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/57T | DO-214AC package; higher RθJA (150 °C/W); 33 V VBR, 53.3 V VC @ 11.8 A | Larger footprint; less suitable for AOI; lower power density | Choose when legacy through-hole or larger SMT layout exists and thermal budget allows higher junction rise |
| SMCJ33A | DO-214AB package; 600 W rating; 33 V VBR, 53.3 V VC @ 11.8 A; no side-wettable flanks | Requires X-ray for solder inspection; incompatible with fine-pitch AOI systems | Select for cost-sensitive industrial applications where board area and automated inspection are secondary to surge margin |
Compared with SMAJ33A-E3/57T and SMCJ33A, the 6DFN33A-M3/H delivers identical 33 V clamping performance in a 3.95 mm × 2.18 mm footprint with side-wettable flanks for full AOI coverage, 0.88 mm profile for thin assemblies, and superior thermal coupling (RθJM = 5 °C/W) for high-reliability deployments.
Availability
6DFN33A-M3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and medical sensor interfaces requiring stable component supply, long-term lifecycle support, and consistent M3-grade environmental compliance.
Supply support for 6DFN33A-M3/H 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS, MOSFETs, and optoelectronics with emphasis on reliability, power efficiency, and ruggedized packaging.
The 6DFN33A-M3/H belongs to Vishay's TRANSZORB® DFN series-designed specifically for high-density, AOI-compatible transient protection in automotive, industrial, and medical systems demanding MSL Level 1, 175 °C operation, and halogen-free compliance.
FAQ
What is the exact breakdown voltage range for 6DFN33A-M3/H?
The 6DFN33A-M3/H has a guaranteed breakdown voltage range of 31.4 V (min) to 34.7 V (max) at 1.0 mA test current, with a nominal value of 33.0 V. This tolerance (±5 %) ensures predictable turn-on behavior across temperature and production lots, critical for protecting 28 V-rated circuits without premature conduction.
Does 6DFN33A-M3/H support automatic optical inspection (AOI)?
Yes, the 6DFN33A-M3/H features side-wettable flanks in its DFN3820A package, enabling full solder-joint inspection using standard AOI systems without requiring X-ray. This design eliminates manual visual checks and improves first-pass yield in high-volume SMT lines.
Is 6DFN33A-M3/H qualified to AEC-Q101?
No, the 6DFN33A-M3/H carries the /H suffix only in the ordering example table-not in its actual part number. The documented 6DFN33A-M3/H is industry-grade (M3 = halogen-free/RoHS/Pb-free), not AEC-Q101 qualified. For automotive qualification, refer to Vishay's AEC-Q101-certified variants such as 6DFN33A-M3-AT.
What is the thermal resistance from junction to mount (RθJM) for 6DFN33A-M3/H?
The 6DFN33A-M3/H has a typical junction-to-mount thermal resistance (RθJM) of 5 °C/W, measured per JEDEC® 51-14 using TDIM. This low value confirms efficient heat transfer from the die directly into the PCB copper mount pad, supporting sustained surge duty cycles in thermally constrained layouts.
Can 6DFN33A-M3/H replace DO-220AA (SMP) footprint devices?
Yes, the 6DFN33A-M3/H is explicitly stated as compatible with the SMP (DO-220AA) package case outline. Its 3.95 mm × 2.18 mm body and 2-terminal configuration allow direct layout reuse-no PCB redesign needed-while delivering improved thermal performance and AOI capability over legacy SMP devices.
6DFN33A-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- 2-VDFN
- Series:
- TRANSZORB®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN3820A
6DFN33A-M3/H FAQ
1.How can I place an order for 6DFN33A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 6DFN33A-M3/H 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 6DFN33A-M3/H reliable?
The price and inventory of 6DFN33A-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 6DFN33A-M3/H is usually 5 days.
3.What payment methods are accepted for 6DFN33A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 6DFN33A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 6DFN33A-M3/H?
6DFN33A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 6DFN33A-M3/H 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 6DFN33A-M3/H?
For technical support, including 6DFN33A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 6DFN33A-M3/H requirements.
6.How does Aetrix verify that 6DFN33A-M3/H is sourced from the original manufacturer or authorized distributors?
All 6DFN33A-M3/H 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 6DFN33A-M3/H meets industry standards.
7.What is the process for return or replacement of 6DFN33A-M3/H?
All 6DFN33A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with 6DFN33A-M3/H, 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 6DFN33A-M3/H part is unused and in its original packaging.
Return procedure for 6DFN33A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
6DFN33A-M3/H Tags
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