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Vishay 6DFN39CA-M3/H
- Part No.:
- 6DFN39CA-M3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
6DFN39CA-M3/H.pdf
- Description:
- 600W,39V 5%, DFN3820A BIDIR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,705
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Product details
Overview
6DFN39CA-M3/H from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor in DFN3820A package, featuring 39 V nominal breakdown voltage (±5 %), 33.3 V stand-off voltage, 53.9 V clamping voltage at 11.1 A peak pulse current, and 600 W peak pulse power (10/1000 μs). It protects signal lines and MOSFETs in industrial sensor units against lightning-induced transients.
For engineers reviewing the 6DFN39CA-M3/H datasheet, 6DFN39CA-M3/H pinout, 6DFN39CA-M3/H application, or 6DFN39CA-M3/H equivalent, this page delivers verified electrical parameters, thermal resistance values (RθJA = 140–175 °C/W), ESD immunity (30 kV contact/air), and precise DFN3820A mechanical dimensions for layout and AOI validation.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver bidirectional clamping with low leakage (<1 μA at VWM) and stable performance across -65 °C to +175 °C junction temperature. Its DFN3820A package enables high-density PCB placement while supporting automated optical inspection via side-wettable flanks.
The device meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, complies with IEC 61000-4-2 (30 kV ESD), and is halogen-free, RoHS-compliant, and qualified to JESD 201 Class 2 whisker test - all confirmed for the M3/H suffix variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - ensures reliable triggering above system operating voltage with ±5 % tolerance |
| VWM | 33.3 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 53.9 V at 11.1 A - clamping voltage limits downstream IC stress during 10/1000 μs surge events |
| PPPM | 600 W - peak pulse power handling capability under standardized 10/1000 μs waveform |
| TJ max | +175 °C - extended thermal range supports operation in harsh industrial environments |
| RθJA | 140–175 °C/W - defines thermal derating behavior on standard FR4 PCB with 2 oz copper |
| ESD Rating | 30 kV contact & air discharge per IEC 61000-4-2 - validates robustness against human-body-model surges |
Pinout & Package
Package: DFN3820A - 2-terminal, leadless, bidirectional device with no cathode marking; dimensions 3.95 mm × 2.18 mm × 0.88 mm (L × W × H); side-wettable flanks for AOI compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Common connection point - polarity-agnostic; either terminal serves as input/output for transient suppression |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completing the symmetrical clamping path; no functional distinction between terminals |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile DFN3820A | 0.88 mm typical height - enables ultra-thin designs and compatibility with tight Z-height constraints |
| Side-wettable flanks | Enables 100 % automated optical inspection (AOI) without X-ray - reduces post-SMT defect escape |
| AEC-Q101 qualified (H suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| Halogen-free & RoHS | M3 termination meets environmental compliance requirements for industrial and medical end equipment |
| Junction passivation | Stable leakage performance (<1 μA at VWM, TJ = 150 °C) ensures long-term protection integrity |
Applications
| Industrial Sensor Protection | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to relay coil flyback in factory automation panels. IC Role / Device Role / Timing Role: Bidirectional transient clamp placed across sensor output and ground to limit voltage excursions to ≤53.9 V during 600 W surges. Use Value: Prevents ADC saturation and op-amp latch-up by maintaining signal integrity below 33.3 V standby and clamping spikes within safe IC absolute maximum ratings. |
Use Scenario: Safeguarding LIN bus transceiver I/O pins from load dump and jump-start induced transients in door module ECUs. IC Role / Device Role / Timing Role: Fast-response TVS suppressing sub-100 ns ESD events and longer 10/1000 μs surges on bidirectional data lines. Use Value: Enables compliance with ISO 10605 (30 kV ESD) and ISO 7637-2 (Pulse 1/2a/3a) without adding series impedance or signal delay. |
| Medical Imaging Signal Chain | Telecom Power Interface |
|
Use Scenario: Shielding low-noise amplifier inputs in portable ultrasound front-ends from ESD during probe handling and cable coupling. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V, per Fig. 4) bidirectional clamp minimizing signal distortion on MHz-range analog paths. Use Value: Maintains SNR and bandwidth integrity while delivering 30 kV ESD protection - critical for FDA-cleared diagnostic accuracy. |
Use Scenario: Guarding DC power input rails of PoE-powered access points against lightning-induced common-mode surges on outdoor Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS absorbing up to 600 W of differential-mode energy before secondary protection stages engage. Use Value: Extends system uptime by preventing fuse blowouts and MOSFET failures during Category C2/C3 surge events per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | DO-214AC package; unidirectional; 36 V VWM; 58.1 V VC @ 10.3 A; RθJA ≈ 50 °C/W | Requires polarity-aware layout; higher clamping voltage; lower thermal resistance but larger footprint | Select when board space allows larger package and unidirectional protection suffices with tighter VWM margin |
| SMCJ33CA | DO-214AB package; bidirectional; 33 V VWM; 53.3 V VC @ 11.3 A; PPPM = 1500 W; RθJA ≈ 15 °C/W | Higher power rating but 7.1 mm × 6.2 mm footprint - 5× larger area than DFN3820A | Choose for higher-energy surge environments where PCB real estate is not constrained and thermal mass improves reliability |
Compared with SMAJ36A-E3/57T and SMCJ33CA, the 6DFN39CA-M3/H delivers identical clamping performance in a 3.95 mm × 2.18 mm footprint with AOI-ready terminations and AEC-Q101 qualification - making it optimal for space-constrained, high-reliability, and automated manufacturing scenarios.
Availability
6DFN39CA-M3/H is available at Aetrix Electronics and suitable for industrial sensor protection, automotive body control modules, medical imaging signal chains, and telecom power interfaces requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for 6DFN39CA-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, miniaturization, and application-specific performance.
The 6DFNxxCA family was engineered to replace legacy SMB/SMA packages with DFN alternatives offering superior power density, AOI compatibility, and automotive-grade qualification - targeting high-volume industrial and automotive electronics.
FAQ
What is the exact breakdown voltage tolerance for 6DFN39CA-M3/H?
The 6DFN39CA-M3/H has a nominal breakdown voltage of 39 V with a ±5 % tolerance, meaning VBR is guaranteed between 37.1 V and 41.0 V at 1 mA test current. This tolerance is explicitly defined in the Electrical Characteristics table on page 2 of Vishay document 98490 and applies to all units bearing the CA suffix.
Is 6DFN39CA-M3/H qualified for automotive applications?
Yes, the "H" suffix in 6DFN39CA-M3/H indicates AEC-Q101 qualification. Vishay confirms this variant meets stress test requirements including HTOL, TCT, and ESD per AEC-Q101 Rev G, and is rated for operation from -65 °C to +175 °C - validated for under-hood and body-control module use.
Does 6DFN39CA-M3/H require a heatsink for 600 W pulse handling?
No external heatsink is required for single-pulse 600 W events, as the 6DFN39CA-M3/H relies on its low thermal resistance to mount (RθJM = 5–6.5 °C/W) and PCB copper area for transient heat dissipation. Continuous power must remain below ~0.5 W due to RθJA = 140–175 °C/W - consistent with TVS duty-cycle limitations.
What does the "M3" suffix mean in 6DFN39CA-M3/H?
The "M3" suffix denotes halogen-free, RoHS-compliant construction with matte tin-plated terminations that meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements. This ensures compatibility with lead-free reflow and long-term interconnect reliability in industrial and medical systems.
Can 6DFN39CA-M3/H be used in place of SMAJ36A on the same PCB?
No - 6DFN39CA-M3/H uses DFN3820A (3.95 mm × 2.18 mm), while SMAJ36A uses DO-214AC (4.5 mm × 2.7 mm) with different pad layout and polarity marking. The 6DFN39CA-M3/H is bidirectional; SMAJ36A is unidirectional. Direct substitution requires schematic and layout revision.
6DFN39CA-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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- 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
6DFN39CA-M3/H FAQ
1.How can I place an order for 6DFN39CA-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 6DFN39CA-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 6DFN39CA-M3/H reliable?
The price and inventory of 6DFN39CA-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 6DFN39CA-M3/H is usually 5 days.
3.What payment methods are accepted for 6DFN39CA-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 6DFN39CA-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 6DFN39CA-M3/H?
6DFN39CA-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 6DFN39CA-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 6DFN39CA-M3/H?
For technical support, including 6DFN39CA-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 6DFN39CA-M3/H requirements.
6.How does Aetrix verify that 6DFN39CA-M3/H is sourced from the original manufacturer or authorized distributors?
All 6DFN39CA-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 6DFN39CA-M3/H meets industry standards.
7.What is the process for return or replacement of 6DFN39CA-M3/H?
All 6DFN39CA-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with 6DFN39CA-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 6DFN39CA-M3/H part is unused and in its original packaging.
Return procedure for 6DFN39CA-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
6DFN39CA-M3/H Tags
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