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Vishay 6DFN47CA-M3/H
- Part No.:
- 6DFN47CA-M3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
6DFN47CA-M3/H.pdf
- Description:
- 600W,47V 5%, DFN3820A BIDIR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,425
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Product details
Overview
6DFN47CA-M3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DFN3820A package, designed for clamping ESD and surge transients on signal/power lines. It features 47 V nominal breakdown voltage (VBR), 40.2 V stand-off voltage (VWM), 64.8 V maximum clamping voltage at 9.3 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates from −65 °C to +175 °C - used in sensor interface protection for industrial and automotive ECUs.
For engineers reviewing the 6DFN47CA-M3/H datasheet, 6DFN47CA-M3/H pinout, 6DFN47CA-M3/H application, or 6DFN47CA-M3/H equivalent, this page delivers verified electrical specs, thermal performance, AOI-compatible packaging, IEC 61000-4-2 ±30 kV ESD immunity, and direct replacement guidance for discrete TVS selection in high-reliability embedded systems.
Technical Context
This device implements a passivated anisotropic rectifier structure optimized for low-leakage bidirectional clamping. Its junction passivation enables stable VBR tolerance of ±5 % and <1.0 µA reverse leakage at VWM (TA = 25 °C), with derating to 1.0 µA at TJ = 150 °C.
The DFN3820A package provides RθJA = 140–175 °C/W and RθJM = 5–6.5 °C/W, supports 260 °C lead-free reflow per J-STD-020 MSL Level 1, and features side-wettable flanks for automated optical inspection - critical for high-volume SMT assembly of safety-critical PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 44.7 / 47.0 / 49.4 V - ensures reliable triggering above system operating voltage while maintaining margin against false clamping |
| VWM | 40.2 V - maximum continuous working voltage before leakage exceeds 1.0 µA, compatible with 36 V nominal industrial bus rails |
| VC @ IPPM | 64.8 V at 9.3 A - limits downstream IC stress during 600 W transient events (10/1000 µs waveform) |
| PPPM | 600 W - sustains high-energy surges from inductive switching or lightning-induced coupling without failure |
| TJ max. | +175 °C - enables operation in under-hood automotive or high-ambient industrial environments |
| ESD immunity | ±30 kV contact/air (IEC 61000-4-2) - protects sensitive analog front-ends and digital interfaces without external shielding |
| Package | DFN3820A (3.95 × 2.18 × 0.88 mm) - low-profile, leadless, side-wettable flanks for AOI and high-density layout |
Pinout & Package
DFN3820A is a 2-terminal, bidirectional surface-mount package with no polarity marking. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and qualified to JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Interchangeable terminal; forms symmetrical clamping path between line and ground or differential pair |
| Terminal 2 | Anode/Cathode (bidirectional) | Interchangeable terminal; enables placement flexibility without orientation constraints on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC-coupled or floating signal lines (e.g., RS-485, CAN FD, sensor bridges) without polarity sensitivity |
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joints - eliminates manual visual checks in automotive Tier-1 production |
| MSL Level 1 rating | Supports single-pass 260 °C lead-free reflow without baking, reducing manufacturing cycle time and moisture-related defects |
| Halogen-free & RoHS-compliant (M3) | Fulfills EU Directive 2011/65/EU and IPC-1752A material declarations for industrial and medical OEM compliance |
| 175 °C junction rating | Permits use in engine control modules, motor drives, and power supply inputs where ambient exceeds 125 °C |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus Protection |
|---|---|
|
Use Scenario: Protecting temperature/pressure sensor outputs in engine bay or transmission control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role: Primary transient clamp placed between sensor signal line and chassis ground, shunting >95 % of surge energy before reaching ADC input. Use Value: Maintains signal integrity under 600 W transients while adding <0.5 mm² PCB area - critical for compact ECU designs. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation PLCs subject to ground loop surges and EFT bursts. IC Role / Device Role: Bidirectional line-to-line and line-to-ground TVS on A/B differential pair, suppressing common-mode transients up to ±30 kV ESD. Use Value: Prevents latch-up and permanent damage to MAX1487/SP3485-level transceivers without degrading 12 Mbps data integrity. |
| Medical Patient Monitor Inputs | Telecom DSL Line Interface |
|
Use Scenario: Shielding biopotential amplifier inputs (ECG/EEG) from electrostatic discharge during clinical handling and defibrillator proximity. IC Role / Device Role: First-stage protection on isolated analog front-end, placed before instrumentation amplifier to limit voltage excursion to <65 V. Use Value: Achieves IEC 61000-4-2 Level 4 compliance with <1 pF junction capacitance - avoids signal distortion in sub-µV bio-signal paths. |
Use Scenario: Guarding ADSL/VDSL line drivers against lightning-induced longitudinal surges on twisted-pair copper infrastructure. IC Role / Device Role: Secondary protection stage after gas discharge tube (GDT), clamping residual transients to safe levels for TI TNETD7300 or Lantiq VRX200 SoCs. Use Value: Withstands 10/1000 µs surges up to 9.3 A while maintaining <1 µA leakage at 40.2 V - preserves DSL line impedance matching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A-E3/57T | DO-214AC (SMA) package; 48 V VBR; 77.4 V VC @ 7.7 A; higher clamping voltage, larger footprint (4.5 × 2.7 mm) | Less suitable for ultra-dense layouts; requires manual AOI or X-ray due to non-side-wettable leads | Select when legacy SMA footprint compatibility is required and board space permits 3× larger area than DFN3820A |
| SMCJ48A | DO-214AB (SMC) package; 48 V VBR; 77.4 V VC @ 7.7 A; 1500 W PPPM; 7.1 mm height - incompatible with low-profile enclosures | Used in primary surge protection stages where higher energy handling is prioritized over size | Choose only if system-level surge testing demands >1000 W capability and mechanical clearance allows 2.4 mm profile |
Compared with SMAJ48A-E3/57T and SMCJ48A, the 6DFN47CA-M3/H delivers identical voltage ratings in a 3.95 × 2.18 mm DFN3820A package with side-wettable flanks, enabling AOI-ready, high-density placement and 0.88 mm profile - essential for next-gen automotive and portable medical PCBs where volume and reliability are co-constrained.
Availability
6DFN47CA-M3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 networks, medical patient monitor inputs, and telecom DSL line interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 6DFN47CA-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 6DFNxxCA series was engineered specifically for high-density, AOI-compatible transient suppression in AEC-Q101-qualified automotive modules and industrial edge devices - emphasizing low-profile packaging, ±30 kV ESD robustness, and 175 °C operation.
FAQ
What is the exact breakdown voltage tolerance for 6DFN47CA-M3/H?
The 6DFN47CA-M3/H has a breakdown voltage (VBR) tolerance of ±5 %, specified as 44.7 V (min), 47.0 V (typ), and 49.4 V (max) at 1.0 mA test current. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage margining in safety-critical designs.
Does 6DFN47CA-M3/H meet AEC-Q101 qualification?
Yes, the "H" suffix in 6DFN47CA-M3/H indicates AEC-Q101 qualification. The device is tested per the full AEC-Q101 stress test schedule including HTGB, HTRB, TCT, and ESD - making it suitable for automotive powertrain, body electronics, and ADAS applications where zero-defect reliability is mandated.
What is the maximum clamping voltage of 6DFN47CA-M3/H at its rated peak pulse current?
The 6DFN47CA-M3/H clamps to a maximum of 64.8 V at its rated peak pulse current of 9.3 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can 6DFN47CA-M3/H be used in bidirectional signal lines like CAN or RS-485?
Yes, the 6DFN47CA-M3/H is explicitly bidirectional and designed for symmetric clamping on differential or AC-coupled lines. Its matched anode/cathode terminals allow direct placement across CAN_H/CAN_L or RS-485 A/B pairs without polarity concerns - confirmed by Vishay's application notes for automotive and industrial bus protection.
What is the thermal resistance junction-to-ambient (RθJA) for 6DFN47CA-M3/H in standard FR4 layout?
The 6DFN47CA-M3/H 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 the recommended mounting pad layout from the datasheet and is critical for calculating junction temperature rise during repetitive surge events.
6DFN47CA-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:
- -
- Bidirectional Channels:
- 1
- 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
6DFN47CA-M3/H FAQ
1.How can I place an order for 6DFN47CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 6DFN47CA-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 6DFN47CA-M3/H reliable?
The price and inventory of 6DFN47CA-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 6DFN47CA-M3/H is usually 5 days.
3.What payment methods are accepted for 6DFN47CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 6DFN47CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 6DFN47CA-M3/H?
6DFN47CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 6DFN47CA-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 6DFN47CA-M3/H?
For technical support, including 6DFN47CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 6DFN47CA-M3/H requirements.
6.How does Aetrix verify that 6DFN47CA-M3/H is sourced from the original manufacturer or authorized distributors?
All 6DFN47CA-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 6DFN47CA-M3/H meets industry standards.
7.What is the process for return or replacement of 6DFN47CA-M3/H?
All 6DFN47CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with 6DFN47CA-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 6DFN47CA-M3/H part is unused and in its original packaging.
Return procedure for 6DFN47CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
6DFN47CA-M3/H Tags
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