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Vishay 6DFN20A-M3/H
- Part No.:
- 6DFN20A-M3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
6DFN20A-M3/H.pdf
- Description:
- 600W,20V 5%, DFN3820A TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,158
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Product details
Overview
6DFN20A-M3/H from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in DFN3820A package, with 20 V nominal breakdown voltage (VBR), 17.1 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), 21.7 A peak pulse current, and clamping voltage of 27.7 V at IPPM - used to protect MOSFETs and ICs against lightning-induced surges and inductive switching transients in industrial sensor signal lines.
For engineers reviewing the 6DFN20A-M3/H datasheet, 6DFN20A-M3/H pinout, 6DFN20A-M3/H application, or 6DFN20A-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 device employs passivated anisotropic rectifier technology optimized for low-clamping, high-energy surge suppression. Its single-element unidirectional configuration delivers precise voltage threshold control with ±5% VBR tolerance and 0.082%/°C temperature coefficient.
The DFN3820A package enables high-density PCB layout while supporting automated optical inspection via side-wettable flanks. Thermal resistance is rated at RθJA = 175 °C/W (max) and RθJM = 6.5 °C/W (max), enabling reliable operation up to 175 °C junction temperature under pulsed conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nom) | 20.0 V - precise breakdown threshold ensures consistent clamping onset across operating temperature range |
| VWM | 17.1 V - maximum continuous reverse voltage before leakage exceeds 1 μA, defining safe operating margin below VBR |
| PPPM | 600 W (10/1000 μs) - energy-handling capacity sufficient for IEC 61000-4-5 level 4 surge immunity |
| IPPM | 21.7 A - peak surge current capability at clamping voltage of 27.7 V, critical for protecting downstream MOSFET gates |
| VC @ IPPM | 27.7 V - clamped voltage during full surge event, limiting stress on protected ICs or transistors |
| TJ max | +175 °C - extended thermal rating supports operation in high-ambient industrial environments without derating |
| ESD Rating | ±30 kV (IEC 61000-4-2 contact/air) - robust electrostatic discharge immunity for handling and field deployment |
Pinout & Package
Package: DFN3820A - leadless, low-profile (0.88 mm typical height), halogen-free, RoHS-compliant, M3-grade termination with matte tin plating; meets UL 94 V-0, J-STD-020 MSL Level 1, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal (heatsink side) | Connected to ground or low-impedance return path; serves as thermal interface and current return node |
| Cathode | Negative terminal (marked with color band) | Connected to protected line; conducts surge current toward ground when VWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable flanks | Enables 100% automated optical inspection (AOI) of solder joints without X-ray, reducing post-SMT defect escape |
| Low-profile DFN3820A | 0.88 mm height allows integration into space-constrained modules such as IoT sensor nodes and motor drive PCBs |
| Passivated anisotropic rectifier | Delivers stable VBR with minimal drift over temperature and lifetime, ensuring long-term protection reliability |
| Unidirectional configuration | Prevents reverse conduction during normal operation while providing fast (<1 ns) response to positive-going transients |
| AEC-Q101 not qualified | M3/H suffix indicates industrial grade only - not validated for automotive underhood applications requiring AEC-Q101 stress testing |
Applications
| Industrial Sensor Signal Protection | Motor Drive Gate 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 flyback and EMI. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at sensor connector input to clamp induced surges before reaching precision ADC or op-amp front-end. Use Value: Limits transient voltage to ≤27.7 V, preventing latch-up or permanent damage to 24 V-rated signal conditioning ICs. | Use Scenario: Safeguarding gate drivers and high-side/low-side MOSFETs in BLDC motor inverters subjected to inductive kickback during PWM switching. IC Role / Device Role / Timing Role: Unidirectional TVS connected between gate and source to absorb Miller-induced spikes and prevent false turn-on or gate oxide rupture. Use Value: Clamps gate-source voltage to 27.7 V within nanoseconds, maintaining MOSFET SOA integrity during 600 W surge events. |
| Telecom Line Interface Protection | Medical Equipment Power Input Filtering |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station remote units from lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on differential pairs, referenced to local ground plane to suppress asymmetrical transients. Use Value: Withstands 30 kV ESD and 600 W surges while maintaining <1 μA leakage at 17.1 V, preserving signal integrity and receiver sensitivity. | Use Scenario: Guarding isolated DC-DC converter inputs in portable diagnostic devices against ESD and load-dump transients during battery hot-swap or adapter connection. IC Role / Device Role / Timing Role: Placed upstream of input filter capacitors to shunt surge energy before it stresses primary-side FETs or controller ICs. Use Value: Operates reliably from –65 °C to +175 °C, supporting sterilization cycles and extended shelf life without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | DO-214AC package; higher RθJA (150 °C/W typ); 20 V VBR, 27.7 V VC; same PPPM and IPPM | Larger footprint (4.5 × 2.7 mm vs. 3.95 × 2.18 mm); no side-wettable flanks; less suitable for AOI-dependent high-volume SMT | Select SMAJ20A only if legacy through-hole or larger reflow-compatible layout exists and AOI is not required. |
| SMCJ20A | DO-214AB package; 20 V VBR, 32.4 V VC; 1500 W PPPM; higher clamping voltage and larger size (7.11 × 6.22 mm) | Higher energy rating but 1.2× higher clamping voltage reduces protection margin for 24 V logic interfaces | Choose SMCJ20A only when >600 W surge levels are confirmed and board space permits larger footprint. |
Compared with SMAJ20A and SMCJ20A, the 6DFN20A-M3/H offers superior board-area efficiency, AOI support, and lower clamping voltage in a thermally optimized DFN3820A package - making it optimal for modern compact industrial and medical electronics where layout density and process yield are critical.
Availability
6DFN20A-M3/H is available at Aetrix Electronics and suitable for industrial sensor protection, motor drive gate safeguarding, and telecom line interface hardening requiring stable component supply, consistent M3-grade material compliance, and traceable lot-level sourcing.
Supply support for 6DFN20A-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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-performance components for industrial, computing, and communications markets.
The 6DFN20A-M3/H belongs to Vishay's TRANSZORB® DFN series - engineered specifically for space-constrained, high-volume SMT applications demanding low-profile, AOI-ready transient protection with repeatable clamping performance.
FAQ
What is the exact breakdown voltage range for 6DFN20A-M3/H?
The 6DFN20A-M3/H has a guaranteed breakdown voltage (VBR) range of 19.0 V to 21.0 V at 1.0 mA test current, with a nominal value of 20.0 V. This ±5% tolerance is specified per the Vishay datasheet document 98464, revision 10-Nov-2023, and applies across the full operating temperature range.
Does 6DFN20A-M3/H meet automotive qualification standards?
No, the 6DFN20A-M3/H is an industrial-grade device with M3/H suffix indicating halogen-free, RoHS-compliant, and JESD 201 Class 2 whisker-tested construction - but it is not AEC-Q101 qualified. For automotive applications, engineers must select explicitly AEC-Q101–rated variants such as the 6DFN20AHE3/H, which is not the same as the 6DFN20A-M3/H.
What does the "H" suffix mean in 6DFN20A-M3/H?
The "H" in 6DFN20A-M3/H denotes the packaging configuration: 7-inch plastic tape and reel with 3500 units per reel. It does not indicate AEC-Q101 qualification - that would require an "HE3" or similar automotive suffix. The "M3" portion confirms halogen-free, RoHS-compliant, Pb-free terminations meeting JESD 201 Class 2 whisker resistance.
Can 6DFN20A-M3/H be used in bidirectional protection circuits?
No, the 6DFN20A-M3/H is strictly unidirectional. Its internal structure and polarity marking (cathode band) support only positive-going transient suppression from cathode to anode. For bidirectional protection, a separate device such as the 6DFN20CA-M3/H - which is explicitly marked and characterized as bidirectional - must be selected instead of the 6DFN20A-M3/H.
What is the thermal resistance from junction to mount (RθJM) for 6DFN20A-M3/H?
The 6DFN20A-M3/H has a maximum junction-to-mount thermal resistance (RθJM) of 6.5 °C/W, measured per JEDEC® 51-14 using the Transient Dual Interface Test Method (TDIM). This value assumes proper copper pad layout per the recommended mounting footprint in the Vishay DFN3820A outline drawing.
6DFN20A-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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- 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
6DFN20A-M3/H FAQ
1.How can I place an order for 6DFN20A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 6DFN20A-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 6DFN20A-M3/H reliable?
The price and inventory of 6DFN20A-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 6DFN20A-M3/H is usually 5 days.
3.What payment methods are accepted for 6DFN20A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 6DFN20A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 6DFN20A-M3/H?
6DFN20A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 6DFN20A-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 6DFN20A-M3/H?
For technical support, including 6DFN20A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 6DFN20A-M3/H requirements.
6.How does Aetrix verify that 6DFN20A-M3/H is sourced from the original manufacturer or authorized distributors?
All 6DFN20A-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 6DFN20A-M3/H meets industry standards.
7.What is the process for return or replacement of 6DFN20A-M3/H?
All 6DFN20A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with 6DFN20A-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 6DFN20A-M3/H part is unused and in its original packaging.
Return procedure for 6DFN20A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
6DFN20A-M3/H Tags
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