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Vishay 6DFN91CA-M3/I
- Part No.:
- 6DFN91CA-M3/I
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
6DFN91CA-M3/I.pdf
- Description:
- 600W,91V 5%, DFN3820A BIDIR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:14,000
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Product details
Overview
6DFN91CA-M3/I from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor in DFN3820A package, with 91.0 V nominal breakdown voltage (±5 %), 77.8 V stand-off voltage, 125 V maximum clamping voltage at 4.8 A peak pulse current, and 600 W peak pulse power rating (10/1000 μs). It protects sensitive ICs and MOSFETs in industrial sensor signal lines against lightning-induced transients.
For engineers reviewing the 6DFN91CA-M3/I datasheet, 6DFN91CA-M3/I pinout, 6DFN91CA-M3/I application, or 6DFN91CA-M3/I equivalent, key selection criteria include clamping voltage margin relative to protected circuit's absolute maximum rating, thermal resistance (RθJA = 140–175 °C/W), bidirectional surge capability, and compatibility with AOI-enabled SMT assembly on FR4 PCBs.
Technical Context
This device uses passivated anisotropic rectifier technology to deliver stable bidirectional clamping without polarity marking. Its junction passivation ensures robust reliability under repeated surge stress up to 175 °C junction temperature.
The DFN3820A package features side-wettable flanks for automated optical inspection and supports high-density layout with low-profile height (0.88 mm typical). Thermal performance is characterized per JEDEC 51-2A (junction-to-ambient) and JEDEC 51-14 (junction-to-mount).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 91.0 V ±5 % - defines minimum voltage at which clamping initiates reliably under 1 mA test current |
| VWM | 77.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 125 V at 4.8 A - clamping voltage during 10/1000 μs surge; determines protected circuit's overvoltage exposure |
| PPPM | 600 W (10/1000 μs) - peak surge power handling capacity under standardized waveform |
| TJ max | +175 °C - enables operation in high-temperature industrial environments without derating |
| RθJA | 140–175 °C/W - thermal resistance dictates required PCB copper area and airflow for sustained surge duty |
| ESD Immunity | ±30 kV (IEC 61000-4-2 contact/air) - meets highest-level system-level ESD protection requirements |
Pinout & Package
Package: DFN3820A - leadless, 2-terminal surface-mount package with dimensions 3.95 mm × 2.18 mm × 0.88 mm (L × W × H), side-wettable flanks, matte tin-plated terminals, MSL Level 1 (260 °C reflow peak), halogen-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Non-polarized terminal; functions as either anode or cathode depending on transient polarity |
| Terminal 2 | Anode/Cathode (bidirectional) | Identical function to Terminal 1; no cathode band marking required for bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| Side-wettable flanks | Supports automated optical inspection (AOI) of solder joint quality in high-volume SMT production |
| Low profile (0.88 mm) | Permits use in space-constrained applications such as portable medical sensors and thin industrial modules |
| Junction passivation | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| MSL Level 1 rating | Allows unlimited floor life and standard 260 °C reflow without baking or special handling |
Applications
| Industrial Sensor Signal Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation cabinets exposed to relay coil switching transients. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across signal and ground, clamping surges before they reach ADC input or isolation amplifier. Use Value: Limits induced overvoltage to ≤125 V during 4.8 A 10/1000 μs surge, preserving signal integrity and preventing damage to 16-bit precision front-end ICs. | Use Scenario: Shielding RS-485 transceiver data lines in base station remote radio units subjected to lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional TVS connected line-to-line and line-to-ground to absorb differential and common-mode energy simultaneously. Use Value: Withstands ±30 kV IEC 61000-4-2 ESD and clamps 600 W surges without degradation, maintaining data link uptime in harsh telecom environments. |
| Medical Diagnostic Equipment Input Protection | Automotive Body Control Module (BCM) Signal Lines |
Use Scenario: Safeguarding ECG electrode inputs and ultrasound transducer receive paths against electrostatic discharge during patient handling and probe connection. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector interface to shunt fast transients before reaching high-impedance instrumentation amplifiers. Use Value: Maintains signal fidelity with minimal added capacitance while delivering 125 V clamping at 4.8 A-critical for preserving microvolt-level biopotential accuracy. | Use Scenario: Protecting LIN bus and sensor inputs (e.g., ambient temperature, rain sensor) in BCMs located near high-noise actuators like window motors and door locks. IC Role / Device Role / Timing Role: Bidirectional TVS mounted at PCB edge connectors to clamp inductive kickback from nearby switched loads. Use Value: Operates reliably from –65 °C to +175 °C and withstands repeated 600 W surges-ensuring long-term immunity in under-hood and cabin-mounted modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A-E3/5A (Vishay) | DO-214AC package; 90 V VWM, 129 V VC @ 4.7 A; RθJA ≈ 50 °C/W higher; 1.5 mm height | Through-hole or larger SMD footprint required; less suitable for ultra-thin or high-density layouts | Select when board space allows larger package and higher thermal resistance is acceptable |
| TPSMF90A (STMicroelectronics) | DFN2510-10 package; 90 V VWM, 125 V VC @ 4.8 A; same clamping but lower PPPM (400 W); RθJA = 160 °C/W | Lower surge power rating limits use in high-energy industrial transients; identical mounting process | Select only for lower-energy threat profiles where 400 W suffices and DFN2510-10 footprint matches |
Compared with SMAJ90A-E3/5A and TPSMF90A, the 6DFN91CA-M3/I delivers identical clamping performance (125 V) with superior surge power (600 W) and optimized thermal resistance (140–175 °C/W) in the compact DFN3820A package-making it preferred for high-reliability, space-constrained industrial and medical designs.
Availability
6DFN91CA-M3/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, medical diagnostic inputs, and automotive body control modules requiring stable component supply across extended temperature ranges and high-surge environments.
Supply support for 6DFN91CA-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, optoelectronics, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 6DFNxxCA series is part of Vishay's TRANSZORB® TVS platform designed specifically for high-power, low-profile, bidirectional transient suppression in next-generation SMT systems where space, thermal performance, and AOI compatibility are critical.
FAQ
What is the breakdown voltage tolerance for 6DFN91CA-M3/I?
The 6DFN91CA-M3/I has a nominal breakdown voltage of 91.0 V with a tolerance of ±5 %, meaning VBR falls between 86.5 V and 95.5 V at 1.0 mA test current. This tight tolerance ensures predictable clamping onset across production lots and supports precise overvoltage margin design in protected circuits.
Does 6DFN91CA-M3/I require a cathode marking for orientation during placement?
No, the 6DFN91CA-M3/I is a bidirectional TVS and has no cathode band or polarity marking. Both terminals are functionally identical, simplifying PCB layout and eliminating orientation errors during automated placement-critical for high-yield manufacturing of dual-sided boards.
What is the maximum clamping voltage of 6DFN91CA-M3/I under surge conditions?
The 6DFN91CA-M3/I exhibits a maximum clamping voltage (VC) of 125 V when subjected to its rated peak pulse current of 4.8 A under the standard 10/1000 μs waveform. This value is guaranteed across temperature and defines the upper voltage limit imposed on protected circuitry during transient events.
Is 6DFN91CA-M3/I compatible with lead-free reflow processes?
Yes, the 6DFN91CA-M3/I is fully compatible with lead-free reflow processes, meeting MSL Level 1 per J-STD-020 with a maximum peak temperature of 260 °C. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102 solderability standards, ensuring reliable wetting and joint formation.
How does the DFN3820A package of 6DFN91CA-M3/I support automated optical inspection (AOI)?
The DFN3820A package of the 6DFN91CA-M3/I features side-wettable flanks-exposed metal on the vertical edges of the terminals-that enable high-contrast imaging during AOI. This allows automated systems to verify solder fillet shape, coverage, and coplanarity without X-ray, improving first-pass yield in high-volume SMT lines.
6DFN91CA-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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 4.8A
- 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
6DFN91CA-M3/I FAQ
1.How can I place an order for 6DFN91CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 6DFN91CA-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 6DFN91CA-M3/I reliable?
The price and inventory of 6DFN91CA-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 6DFN91CA-M3/I is usually 5 days.
3.What payment methods are accepted for 6DFN91CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 6DFN91CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 6DFN91CA-M3/I?
6DFN91CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 6DFN91CA-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 6DFN91CA-M3/I?
For technical support, including 6DFN91CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 6DFN91CA-M3/I requirements.
6.How does Aetrix verify that 6DFN91CA-M3/I is sourced from the original manufacturer or authorized distributors?
All 6DFN91CA-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 6DFN91CA-M3/I meets industry standards.
7.What is the process for return or replacement of 6DFN91CA-M3/I?
All 6DFN91CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with 6DFN91CA-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 6DFN91CA-M3/I part is unused and in its original packaging.
Return procedure for 6DFN91CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
6DFN91CA-M3/I Tags
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