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Vishay 6DFN68CA-M3/I
- Part No.:
- 6DFN68CA-M3/I
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
6DFN68CA-M3/I.pdf
- Description:
- 600W,68V 5%, DFN3820A BIDIR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:13,985
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Product details
Overview
6DFN68CA-M3/I from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor in DFN3820A package, with 68 V nominal breakdown voltage (VBR), 58.1 V stand-off voltage (VWM), 92.0 V maximum clamping voltage at 6.5 A peak pulse current, and 600 W peak pulse power rating (10/1000 μs). It protects signal lines in sensor units and MOSFET gate drivers against lightning-induced transients and inductive switching surges.
For engineers reviewing the 6DFN68CA-M3/I datasheet, 6DFN68CA-M3/I pinout, 6DFN68CA-M3/I application, or 6DFN68CA-M3/I equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, thermal resistance (RθJA = 140–175 °C/W), bidirectional surge capability, and compatibility with AOI-enabled SMT assembly due to side-wettable flanks.
Technical Context
This device employs passivated anisotropic rectifier technology optimized for low-leakage, high-reliability transient suppression. Its bidirectional configuration enables symmetrical clamping across both polarities without polarity marking, and its junction passivation ensures stable performance under repeated surge stress up to 175 °C maximum junction temperature.
The DFN3820A package delivers low-profile mounting (0.88 mm typical height) and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak. Thermal design relies on RθJM = 5–6.5 °C/W to mount and RθJA = 140–175 °C/W to ambient on standard FR4, enabling robust power derating above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 64.6 / 68.0 / 71.4 V - defines minimum voltage at which device enters avalanche conduction during transient events |
| VWM | 58.1 V - maximum continuous reverse working voltage before leakage exceeds 1 μA; sets upper limit for normal operating bias |
| VC @ IPPM | 92.0 V - clamping voltage at 6.5 A peak pulse current; determines worst-case overvoltage seen by protected circuit |
| PPPM | 600 W - peak pulse power handling (10/1000 μs waveform); quantifies single-event surge energy absorption capacity |
| IPPM | 6.5 A - maximum non-repetitive peak surge current; used with VC to calculate worst-case clamped power dissipation |
| TJ max | +175 °C - maximum allowable junction temperature; supports operation in high-ambient industrial environments |
| RθJA | 140–175 °C/W - thermal resistance from junction to ambient on standard FR4; critical for PCB copper area and layout thermal design |
Pinout & Package
Package: DFN3820A - 2-terminal, leadless, side-wettable flank package measuring 3.95 mm × 2.18 mm × 0.88 mm (L × W × H), compatible with SMP (DO-220AA) outline and suitable for AOI inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bidirectional terminal pair | No polarity marking; terminals are functionally symmetric - either terminal may serve as anode or cathode depending on transient polarity |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joint quality without X-ray, reducing post-reflow defect escape |
| Halogen-free, RoHS-compliant M3 termination | Meets JESD201 Class 2 whisker resistance and global environmental compliance requirements for industrial-grade applications |
| MSL Level 1 rating | Allows unlimited floor life and supports standard 260 °C Pb-free reflow without baking, simplifying manufacturing logistics |
| 30 kV ESD immunity (IEC 61000-4-2) | Provides system-level electrostatic discharge protection without requiring additional discrete ESD components on board |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector interface to clamp fast-rising transients before they reach signal conditioning ICs. Use Value: Clamps 68 V-rated line to ≤92 V during 6.5 A surge, maintaining signal integrity while preventing latch-up or oxide rupture in downstream 5 V/3.3 V ICs. | Use Scenario: Safeguarding digital input/output channels in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Transient suppressor mounted adjacent to terminal block to absorb inductive kickback from 24 V DC solenoids and contactors. Use Value: Withstands repetitive 600 W surges and operates continuously from –65 °C to +175 °C, ensuring reliability in uncontrolled cabinet environments. |
| Medical Imaging Signal Lines | Telecom Power Interface |
Use Scenario: Shielding low-noise analog front-ends in ultrasound and MRI subsystems from EMI-coupled transients on patient interface cables. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed at ADC input stage to suppress sub-μs ESD events without distorting signal bandwidth. Use Value: Maintains <1 μA leakage at 58.1 V VWM, preserving DC accuracy and offset stability in precision medical measurement paths. | Use Scenario: Protecting 48 V DC power feeds in PoE-powered network switches and base station radios from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Primary surge clamp on secondary-side DC input, coordinated with upstream GDT or MOV for staged protection architecture. Use Value: Delivers 600 W pulse power handling with 92 V clamping, limiting stress on downstream DC/DC converters rated for 100 V input max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/57T (Vishay) | DO-214AC package, 64 V VWM, 100 V VC @ 5.2 A, higher profile (2.3 mm), RθJA ≈ 50 °C/W | Through-hole or larger SMT footprint; better thermal dissipation but incompatible with ultra-thin designs | Select when board space allows larger package and higher thermal mass is needed for repetitive surge duty. |
| TPSMF6.8A-Q (ON Semiconductor) | SOD-123FL package, 6.8 V VWM, 11.2 V VC @ 22.5 A, not voltage-scaled to 68 V range | Designed for low-voltage logic rails (3.3 V/5 V), not suitable for 48–72 V industrial bus protection | Not interchangeable - only consider for sub-10 V applications; 6DFN68CA-M3/I remains required for 58.1 V working voltage systems. |
Compared with SMAJ64A-E3/57T and TPSMF6.8A-Q, the 6DFN68CA-M3/I uniquely combines 58.1 V stand-off capability, 92 V clamping, DFN3820A low-profile packaging, and side-wettable flanks - making it the only option meeting AOI-compatible, high-voltage, space-constrained industrial surge protection requirements.
Availability
6DFN68CA-M3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power input stages requiring stable component supply, long-term lifecycle support, and consistent M3-grade halogen-free compliance.
Supply support for 6DFN68CA-M3/I 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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and application-specific optimization.
The 6DFNxxCA series was developed to deliver high-power transient suppression in ultra-low-profile DFN packages for next-generation compact electronics where board space, thermal constraints, and automated assembly are critical.
FAQ
What is the maximum clamping voltage of the 6DFN68CA-M3/I under standard test conditions?
The 6DFN68CA-M3/I has a maximum clamping voltage (VC) of 92.0 V when subjected to a 10/1000 μs peak pulse current of 6.5 A. This value is measured per IEC 61000-4-5 and defines the highest voltage the device allows to appear across protected circuitry during a standardized surge event. The 6DFN68CA-M3/I maintains this clamping performance across its full operating temperature range.
Does the 6DFN68CA-M3/I require a cathode marking for correct orientation during placement?
No - the 6DFN68CA-M3/I is a bidirectional TVS and has no cathode band or polarity marking. Its DFN3820A package features two identical terminals that function symmetrically regardless of applied transient polarity. This eliminates orientation errors during automated placement and simplifies PCB layout for differential or AC-coupled signal lines.
Is the 6DFN68CA-M3/I compliant with lead-free reflow standards?
Yes - the 6DFN68CA-M3/I carries the M3 suffix, indicating halogen-free, RoHS-compliant construction with matte tin-plated terminations qualified to J-STD-002 and JESD 22-B102 solderability standards. It meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C without preconditioning.
What is the junction-to-ambient thermal resistance (RθJA) specification for the 6DFN68CA-M3/I?
The 6DFN68CA-M3/I has a typical RθJA of 140 °C/W and a maximum of 175 °C/W when mounted on a standard FR4 PCB per JEDEC 51-2A. This value assumes a 2 oz. copper footprint matching the DFN3820A pad layout. Effective thermal management requires adherence to the recommended mounting pad dimensions shown in the Vishay package drawing.
Can the 6DFN68CA-M3/I be used in automotive applications requiring AEC-Q101 qualification?
No - the 6DFN68CA-M3/I is an industry-grade part (M3 suffix, no "H" in ordering code). For AEC-Q101 qualified equivalents, refer to Vishay's 6DFN68CA-M3/H variant, which includes additional stress testing and traceability documentation. The 6DFN68CA-M3/I is intended for industrial, medical, and telecom applications where AEC-Q101 is not mandated.
6DFN68CA-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- 2-VDFN
- Series:
- TRANSZORB®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 6.5A
- 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
6DFN68CA-M3/I FAQ
1.How can I place an order for 6DFN68CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 6DFN68CA-M3/I 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 6DFN68CA-M3/I reliable?
The price and inventory of 6DFN68CA-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 6DFN68CA-M3/I is usually 5 days.
3.What payment methods are accepted for 6DFN68CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 6DFN68CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 6DFN68CA-M3/I?
6DFN68CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 6DFN68CA-M3/I 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 6DFN68CA-M3/I?
For technical support, including 6DFN68CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 6DFN68CA-M3/I requirements.
6.How does Aetrix verify that 6DFN68CA-M3/I is sourced from the original manufacturer or authorized distributors?
All 6DFN68CA-M3/I 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 6DFN68CA-M3/I meets industry standards.
7.What is the process for return or replacement of 6DFN68CA-M3/I?
All 6DFN68CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with 6DFN68CA-M3/I, 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 6DFN68CA-M3/I part is unused and in its original packaging.
Return procedure for 6DFN68CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
6DFN68CA-M3/I Tags
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Diodes Incorporated
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