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Vishay 6DFN47A-M3/H
- Part No.:
- 6DFN47A-M3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
6DFN47A-M3/H.pdf
- Description:
- 600W,47V 5%, DFN3820A TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,169
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Product details
Overview
6DFN47A-M3/H from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in DFN3820A package, with 47 V nominal breakdown voltage (VBR), 40.2 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), 9.3 A peak pulse current, and 64.8 V maximum clamping voltage (VC). It protects MOSFETs and signal lines in industrial sensor units against lightning-induced transients.
For engineers reviewing the 6DFN47A-M3/H datasheet, 6DFN47A-M3/H pinout, 6DFN47A-M3/H application, or 6DFN47A-M3/H equivalent, key selection criteria include clamping performance at 9.3 A, thermal resistance (RθJA = 140–175 °C/W), MSL Level 1 rating, side-wettable flanks for AOI, and AEC-Q101-unqualified industrial-grade qualification (H suffix).
Technical Context
This device uses passivated anisotropic rectifier technology to deliver precise unidirectional clamping with low leakage (<1 μA at VWM) and stable temperature coefficient (αT = 0.092 %/°C). Its DFN3820A footprint enables high-density PCB layouts while maintaining robust surge handling up to 175 °C junction temperature.
The 6DFN47A-M3/H operates as a single-diode TVS in series with sensitive nodes, responding to transients within nanoseconds. Its 64.8 V clamping voltage at 9.3 A ensures safe voltage limiting for 40 V-rated downstream ICs, and its 0.88 mm profile supports ultra-thin consumer and medical electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 44.7 / 47.0 / 49.4 V - defines reliable conduction onset under transient stress |
| VWM | 40.2 V - maximum continuous reverse voltage before leakage exceeds 1 μA |
| VC @ IPPM | 64.8 V - clamped voltage during 9.3 A 10/1000 μs surge, limiting stress on protected IC |
| PPPM | 600 W - peak transient energy absorption capability per JEDEC standard waveform |
| RθJA | 140–175 °C/W - thermal resistance dictates derating above 25 °C ambient for sustained reliability |
| TJ max | +175 °C - enables operation in high-temperature industrial environments without thermal shutdown |
| ESD immunity | ±30 kV contact/air - meets IEC 61000-4-2 for robust system-level ESD protection |
Pinout & Package
Package: DFN3820A - 2-terminal, leadless, side-wettable flanks, 3.95 mm × 2.18 mm × 0.88 mm, matte tin-plated terminals, cathode marked by color band. Heatsink is anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (heatsink pad) | Current return path / thermal interface | Exposed copper pad serves as primary heat sink and electrical connection to ground or low-impedance reference |
| Cathode (marked end) | Transient current entry point | Connected to line being protected; conducts surge current to anode when VBR exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joints without X-ray, reducing manufacturing defect escapes |
| Low-profile height (0.88 mm) | Supports ultra-thin designs in wearables and portable medical sensors where Z-height is constrained |
| Halogen-free, RoHS-compliant (M3) | Meets global environmental compliance requirements and JESD201 Class 2 whisker resistance |
| MSL Level 1 (260 °C peak) | Allows standard reflow without moisture sensitivity baking, simplifying SMT line integration |
| Passivated anisotropic rectifier | Delivers tight VBR tolerance (±5 %) and stable clamping across temperature and lifetime |
Applications
| Industrial Sensor Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 4–20 mA current-loop sensor outputs from inductive switching transients in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground, clamping surges before they reach ADC input or isolation amplifier. Use Value: 64.8 V clamping ensures protected circuitry remains below 65 V absolute maximum rating, preventing latch-up or gate oxide damage. | Use Scenario: Safeguarding LIN bus transceiver inputs from load-dump and jump-start induced spikes in door module ECUs. IC Role / Device Role / Timing Role: Standoff voltage (40.2 V) exceeds normal LIN bus operating range (0–12 V), enabling silent standby until surge occurs. Use Value: 600 W peak power rating absorbs 12 V/200 ms load-dump energy without degradation, preserving communication integrity. |
| Medical Imaging Signal Chain | Telecom Power Interface |
Use Scenario: Shielding analog front-end amplifiers in portable ultrasound probes from ESD events during cable handling. IC Role / Device Role / Timing Role: Fast-response TVS (nanosecond turn-on) shunting ESD current away from precision op-amps and ADC drivers. Use Value: ±30 kV IEC 61000-4-2 immunity prevents false triggers or calibration drift in diagnostic-grade signal paths. | Use Scenario: Clamping induced surges on 48 V PoE+ power feed lines entering base station RF modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input rail upstream of DC-DC converters and LDOs. Use Value: 175 °C max junction temperature allows reliable operation near hot RF power amplifiers without thermal derating penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A | DO-214AC package; higher RθJA (~160 °C/W); same VBR (45.6–50.4 V), but larger footprint and no side-wettable flanks | Less suitable for AOI-dependent high-volume SMT; better for manual repair or legacy board designs | Select when board space permits larger package and AOI is not required |
| SMCJ48A | DO-214AB package; 1500 W rating; higher VC (77.4 V); 2.4× larger footprint; same VWM (40.8 V) | Used where higher surge margin is needed (e.g., outdoor telecom cabinets), but clamping voltage exceeds 65 V limit | Select only if system can tolerate 77.4 V clamping and board layout accommodates 7.11 mm × 6.22 mm outline |
Compared with SMAJ48A and SMCJ48A, the 6DFN47A-M3/H delivers identical clamping performance in a 3.95 mm × 2.18 mm DFN3820A package with AOI-compatible side-wettable flanks and lower thermal resistance to mount, making it optimal for space-constrained, high-reliability industrial and medical PCBs.
Availability
6DFN47A-M3/H is available at Aetrix Electronics and suitable for industrial sensor protection, automotive body control modules, and medical imaging signal chain applications requiring stable component supply, halogen-free compliance, and MSL Level 1 reflow compatibility.
Supply support for 6DFN47A-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 devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The 6DFN47A-M3/H belongs to Vishay's TRANSZORB® DFN family, engineered for high-density, automated assembly of transient protection in space- and thermal-constrained systems across industrial, medical, and communications markets.
FAQ
What is the exact breakdown voltage range for 6DFN47A-M3/H?
The 6DFN47A-M3/H has a guaranteed breakdown voltage range of 44.7 V (minimum) to 49.4 V (maximum) at 1.0 mA test current, with a typical value of 47.0 V. This ±5 % tolerance is confirmed in the Electrical Characteristics table of Vishay document 98464, revision 10-Nov-2023, and applies across the full operating temperature range.
Does 6DFN47A-M3/H meet AEC-Q101 reliability standards?
No, the 6DFN47A-M3/H does not meet AEC-Q101. The "H" suffix in this part number indicates AEC-Q101 qualification only when explicitly stated in Vishay's official documentation; however, per the Ordering Information table in document 98464, "H" denotes industry-grade qualification with MSL Level 1 and 260 °C peak reflow, not automotive qualification. True AEC-Q101 variants carry distinct part-number suffixes (e.g., -HE3).
What is the maximum clamping voltage of 6DFN47A-M3/H and at what current is it specified?
The maximum clamping voltage of 6DFN47A-M3/H is 64.8 V, measured at 9.3 A peak pulse current (IPPM) under the standardized 10/1000 μs double-exponential surge waveform. This value is specified in the Electrical Characteristics table and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can 6DFN47A-M3/H be used in place of SMAJ48A in existing designs?
6DFN47A-M3/H is not a direct drop-in replacement for SMAJ48A due to different package (DFN3820A vs. DO-214AC), pinout (2-terminal exposed pad vs. 2-lead gull-wing), and thermal path. While both offer similar VBR and VC, PCB layout, solder stencil, and thermal management must be redesigned. No mechanical or electrical pin compatibility exists between the two packages.
What is the junction-to-mount thermal resistance (RθJM) for 6DFN47A-M3/H?
The junction-to-mount thermal resistance (RθJM) for 6DFN47A-M3/H is 5 °C/W (typical) and 6.5 °C/W (maximum), per Thermal Characteristics table in Vishay document 98464. This low value reflects efficient heat transfer from die to PCB copper via the exposed anode pad, critical for sustaining repeated surge events in thermally dense layouts.
6DFN47A-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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- 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
6DFN47A-M3/H FAQ
1.How can I place an order for 6DFN47A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 6DFN47A-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 6DFN47A-M3/H reliable?
The price and inventory of 6DFN47A-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 6DFN47A-M3/H is usually 5 days.
3.What payment methods are accepted for 6DFN47A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 6DFN47A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 6DFN47A-M3/H?
6DFN47A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 6DFN47A-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 6DFN47A-M3/H?
For technical support, including 6DFN47A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 6DFN47A-M3/H requirements.
6.How does Aetrix verify that 6DFN47A-M3/H is sourced from the original manufacturer or authorized distributors?
All 6DFN47A-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 6DFN47A-M3/H meets industry standards.
7.What is the process for return or replacement of 6DFN47A-M3/H?
All 6DFN47A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with 6DFN47A-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 6DFN47A-M3/H part is unused and in its original packaging.
Return procedure for 6DFN47A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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