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Vishay 6DFN43CA-M3/H
- Part No.:
- 6DFN43CA-M3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
6DFN43CA-M3/H.pdf
- Description:
- 600W,43V 5%, DFN3820A BIDIR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,848
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Product details
Overview
6DFN43CA-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 43 V nominal breakdown voltage (VBR), 36.8 V stand-off voltage (VWM), 59.3 V maximum clamping voltage at 10.1 A peak pulse current, and 600 W peak pulse power rating (10/1000 μs). Used to protect MOSFET gates and sensor signal lines in industrial motor drives.
For engineers reviewing the 6DFN43CA-M3/H datasheet, 6DFN43CA-M3/H pinout, 6DFN43CA-M3/H application, or 6DFN43CA-M3/H equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, thermal resistance (RθJA = 175 °C/W), bidirectional polarity, and MSL Level 1 reflow compatibility.
Technical Context
This TVS employs anisotropic rectifier technology with junction passivation optimized for low-leakage, high-reliability transient suppression. Its bidirectional configuration enables symmetrical clamping without polarity constraints, supporting AC-coupled or differential signal protection paths.
The DFN3820A package delivers low-profile mounting (0.88 mm height) with side-wettable flanks for automated optical inspection and solder-joint reliability validation. Thermal performance is characterized per JEDEC 51-2A (RθJA) and 51-14 (RθJM), enabling accurate junction temperature estimation under repetitive surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 / 43.0 / 45.2 V - Ensures reliable turn-on before protected circuit exceeds safe voltage threshold |
| VWM | 36.8 V - Maximum continuous working voltage without leakage exceeding 1.0 μA at 25 °C |
| VC @ IPPM | 59.3 V at 10.1 A - Clamping voltage during 600 W, 10/1000 μs surge; defines worst-case stress on downstream IC |
| PPPM | 600 W - Peak surge power handling capability per standard IEC 61000-4-5 waveform |
| TJ max | +175 °C - Enables operation in high-ambient environments such as motor control enclosures |
| ESD immunity | ±30 kV contact/air per IEC 61000-4-2 - Suitable for front-panel or connector-level ESD protection |
| Package | DFN3820A - 2.18 × 3.95 mm footprint with side-wettable flanks for AOI-compatible reflow |
Pinout & Package
DFN3820A is a 2-terminal surface-mount package with no polarity marking for bidirectional operation. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and qualified to JESD 201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no cathode band required |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically symmetric with Terminal 1; enables placement flexibility in layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Eliminates need for polarity-aware routing in differential or AC signal paths |
| Side-wettable flanks | Enables automated optical inspection of solder joints without X-ray |
| MSL Level 1 rating | Supports single-reflow assembly at peak temperature up to 260 °C without preconditioning |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for industrial and medical end equipment |
| Junction passivated anisotropic rectifier | Delivers <1.0 μA leakage at VWM and stable VBR over temperature and lifetime |
Applications
| Industrial Motor Drive Control | Automotive Sensor Signal Protection |
|---|---|
|
Use Scenario: Protecting Hall-effect sensor outputs from inductive kickback during BLDC motor commutation. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across sensor output-to-ground path. Use Value: Limits voltage excursion to ≤59.3 V during 10.1 A surge, preventing latch-up or gate oxide damage in downstream comparator or MCU input stage. |
Use Scenario: Shielding LIN bus transceiver I/O pins from load-dump and jump-start transients in body electronics modules. IC Role / Device Role / Timing Role: Bidirectional TVS connected between LIN data line and ground. Use Value: Clamps ±30 kV ESD events and 600 W surges while maintaining <1.0 μA leakage at 12 V system VWM, preserving bus signal integrity. |
| Medical Imaging Power Supply Rails | Telecom Base Station RF Front-End |
|
Use Scenario: Guarding isolated DC-DC converter feedback resistors against fast-rising transients induced by nearby MRI gradient coil switching. IC Role / Device Role / Timing Role: Low-capacitance TVS across feedback divider nodes. Use Value: Provides 36.8 V stand-off with 59.3 V clamping, ensuring regulation loop remains functional during sub-microsecond transients. |
Use Scenario: Protecting antenna switch control lines from electrostatic discharge in outdoor small-cell radios. IC Role / Device Role / Timing Role: Bidirectional TVS on GPIO lines driving GaN HEMT bias sequencing. Use Value: Withstands 30 kV contact ESD and maintains <1.0 μA leakage at 24 V bias rail, avoiding false triggering of power-up sequence logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43CA | DO-214AC package (SMA), higher RθJA (190 °C/W), same VBR/VC specs | Larger footprint (4.5 × 2.7 mm), less suitable for dense PCB layouts | Select when legacy SMA footprint compatibility is required and board space permits |
| SMCJ43CA | DO-214AB package (SMC), 1500 W PPPM, higher VC (69.4 V), larger size | Higher power handling but 16.1 V higher clamping voltage compromises protection margin | Choose only when surge energy exceeds 600 W and clamping voltage margin allows |
Compared with SMAJ43CA and SMCJ43CA, the 6DFN43CA-M3/H offers superior board-area efficiency and lower thermal resistance to mount (RθJM = 6.5 °C/W), enabling tighter thermal coupling to copper pour for repeated surge duty cycles in compact industrial designs.
Availability
6DFN43CA-M3/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, and medical imaging power systems requiring stable component supply and AEC-Q101-qualified surge protection.
Supply support for 6DFN43CA-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, and protection devices with emphasis on reliability and application-specific optimization.
The 6DFNxxCA series was developed to deliver high-power transient suppression in ultra-compact DFN packages for space-constrained, high-reliability applications including automotive, industrial, and medical electronics.
FAQ
What is the clamping voltage of the 6DFN43CA-M3/H under maximum rated surge current?
The 6DFN43CA-M3/H exhibits a maximum clamping voltage (VC) of 59.3 V when subjected to its rated peak pulse current (IPPM) of 10.1 A under the standardized 10/1000 μs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events. The 6DFN43CA-M3/H maintains this clamping performance across its full operating temperature range.
Is the 6DFN43CA-M3/H suitable for automotive applications?
Yes, the 6DFN43CA-M3/H carries the "H" suffix in its ordering code, indicating qualification to AEC-Q101 for automotive-grade reliability. It meets stringent requirements for temperature cycling, humidity resistance, and mechanical shock, making it appropriate for engine control units, body electronics, and ADAS sensor interfaces where transient robustness is critical. The 6DFN43CA-M3/H operates from -65 °C to +175 °C junction temperature.
Does the 6DFN43CA-M3/H require a specific PCB pad layout?
Yes, the 6DFN43CA-M3/H requires adherence to the DFN3820A mounting pad layout specified in Vishay document 98490, including thermal pad dimensions (2.55 × 1.93 mm) and solder mask clearance. Deviations may impair thermal dissipation (RθJM = 6.5 °C/W) and reduce surge endurance. The side-wettable flanks necessitate controlled stencil aperture design to ensure consistent solder fillet formation for AOI verification.
How does the 6DFN43CA-M3/H compare to unidirectional TVS diodes in signal-line protection?
The 6DFN43CA-M3/H provides symmetrical clamping for both positive and negative transients, eliminating polarity concerns in AC-coupled or differential signaling-unlike unidirectional TVS diodes that clamp only one polarity and require careful orientation. Its 36.8 V VWM and 59.3 V VC offer balanced protection margins for ±12 V or ±24 V industrial buses. The 6DFN43CA-M3/H achieves this without sacrificing leakage (<1.0 μA) or surge capability (600 W).
What is the meaning of the "M3" and "H" suffixes in 6DFN43CA-M3/H?
In 6DFN43CA-M3/H, "M3" denotes halogen-free, RoHS-compliant construction with matte tin terminations qualified to JESD 201 Class 2 whisker resistance, while "H" specifies AEC-Q101 qualification for automotive use. Together, they confirm the 6DFN43CA-M3/H meets environmental, reliability, and safety standards required for mission-critical applications in harsh environments.
6DFN43CA-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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.1A
- 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
6DFN43CA-M3/H FAQ
1.How can I place an order for 6DFN43CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 6DFN43CA-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 6DFN43CA-M3/H reliable?
The price and inventory of 6DFN43CA-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 6DFN43CA-M3/H is usually 5 days.
3.What payment methods are accepted for 6DFN43CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 6DFN43CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 6DFN43CA-M3/H?
6DFN43CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 6DFN43CA-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 6DFN43CA-M3/H?
For technical support, including 6DFN43CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 6DFN43CA-M3/H requirements.
6.How does Aetrix verify that 6DFN43CA-M3/H is sourced from the original manufacturer or authorized distributors?
All 6DFN43CA-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 6DFN43CA-M3/H meets industry standards.
7.What is the process for return or replacement of 6DFN43CA-M3/H?
All 6DFN43CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with 6DFN43CA-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 6DFN43CA-M3/H part is unused and in its original packaging.
Return procedure for 6DFN43CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
6DFN43CA-M3/H Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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