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Vishay General Semiconductor - Diodes Division 6DFN39A-M3/I
- Part No.:
- 6DFN39A-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
6DFN39A-M3/I.pdf
- Description:
- 600W,39V 5%, DFN3820A TVS
- Quantity:
- Payment:
- Shipping:
Inventory:14,000
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Product details
Overview
6DFN39A-M3/I from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in DFN3820A package, featuring 39.0 V nominal breakdown voltage (VBR), 33.3 V stand-off voltage (VWM), 53.9 V maximum clamping voltage (VC) at 11.1 A peak pulse current, and 600 W peak pulse power rating (10/1000 μs). It protects signal lines in sensor units and MOSFET gate drivers against lightning-induced transients and inductive switching surges.
For engineers reviewing the 6DFN39A-M3/I datasheet, 6DFN39A-M3/I pinout, 6DFN39A-M3/I application, or 6DFN39A-M3/I equivalent, key selection criteria include clamping performance under 10/1000 μs surge, thermal resistance (RθJA = 140–175 °C/W), MSL Level 1 moisture sensitivity, side-wettable flanks for AOI, and unidirectional polarity with cathode band marking.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for low-leakage, high-clamping efficiency, and stable breakdown over temperature (αT = 0.091 %/°C). Its junction-to-mount thermal resistance (RθJM = 5–6.5 °C/W) enables effective heat transfer to PCB copper when mounted on standard FR4 with 2 oz. copper.
The device operates across -65 °C to +175 °C junction temperature range and meets IEC 61000-4-2 ESD immunity up to ±30 kV (contact/air discharge). Its DFN3820A footprint is compatible with SMP (DO-220AA) case outline while delivering lower profile (0.88 mm typical height) and automated placement compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - Ensures reliable turn-on above system operating voltage while maintaining margin against false triggering. |
| VWM | 33.3 V - Maximum continuous reverse voltage before leakage exceeds 1.0 μA, suitable for 3.3 V–24 V rail protection. |
| VC @ IPPM | 53.9 V at 11.1 A - Clamps transient energy within safe voltage window for downstream 50 V-rated ICs or MOSFETs. |
| PPPM | 600 W (10/1000 μs) - Withstands industrial-level surge events per IEC 61000-4-5 without degradation. |
| Junction temp. range | -65 °C to +175 °C - Supports operation in under-hood automotive, industrial motor drives, and medical equipment. |
| ESD immunity | ±30 kV contact/air (IEC 61000-4-2) - Eliminates need for additional ESD protection stages in sensor interface circuits. |
| Package | DFN3820A (3.95 × 2.18 × 0.88 mm) - Side-wettable flanks enable automated optical inspection and high-yield reflow soldering. |
Pinout & Package
Package: DFN3820A - 2-terminal, leadless, halogen-free, RoHS-compliant, matte tin-plated terminals. Cathode denoted by color band; anode connected to exposed heatsink pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (heatsink pad) | Common reference node and thermal path | Must be soldered to ≥25 mm² copper pour for RθJM ≤ 6.5 °C/W; electrically connects to system ground or power return. |
| Cathode (marked terminal) | Transient current sink | Connected to protected line (e.g., sensor output, MOSFET gate); conducts surge current to anode during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable flanks | Enables 100% automated optical inspection (AOI) of solder joint integrity without X-ray, reducing post-reflow defect escape. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking, simplifying SMT line logistics and inventory management. |
| Low-profile height (0.88 mm) | Permits use in space-constrained modules such as wearable sensors, IoT edge nodes, and compact motor controllers. |
| Junction passivation | Minimizes long-term parameter drift and leakage increase under thermal cycling and humidity exposure (JESD22-A110). |
| Unidirectional configuration | Provides precise clamping only during positive transients on cathode-connected lines, avoiding DC blocking in bias-sensitive analog paths. |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
|
Use Scenario: Protecting Hall-effect position sensor outputs in EPS (electric power steering) modules from load dump and relay coil flyback. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at sensor IC output pin to clamp spikes before they reach ADC input or microcontroller GPIO. Use Value: Prevents latch-up or permanent damage to 3.3 V sensor interface ICs during 100 V/50 ms load dump events per ISO 7637-2 Pulse 5a. |
Use Scenario: Shielding N-channel MOSFET gate drivers in BLDC inverters from Miller-induced voltage spikes during high dV/dt switching. IC Role / Device Role / Timing Role: Fast-response clamping device between gate and source, limiting VGS excursion to <53.9 V during transient coupling. Use Value: Avoids unintended turn-on or gate oxide stress, extending MOSFET lifetime in 48 V–400 V motor control systems. |
| Medical Imaging Signal Conditioning | Telecom Line Interface Protection |
|
Use Scenario: Safeguarding low-noise amplifier inputs in ultrasound front-end ASICs from ESD events during probe handling and cable connection. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) TVS placed immediately before LNA input to shunt ESD without degrading signal integrity. Use Value: Maintains sub-1 nV/√Hz noise floor while passing ±30 kV IEC 61000-4-2 ESD pulses without parametric shift. |
Use Scenario: Protecting RS-485 transceiver data lines in base station remote radio units exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of integrated transceiver, absorbing 600 W 10/1000 μs transients per ITU-T K.20/21. Use Value: Enables compliance with GR-1089-CORE Level 4 surge immunity without external spark gaps or multi-stage filtering. |
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 (SMA) package; higher RθJA (150 °C/W); VC = 58.1 V @ 10.3 A; same 600 W rating | Larger footprint (4.5 × 2.7 mm vs. 3.95 × 2.18 mm); no side-wettable flanks; requires X-ray for solder inspection | Select when legacy SMA layout exists or when higher surge repetition tolerance is needed due to lower junction temperature rise per pulse. |
| SMCJ36A-QH | AEC-Q101 qualified; DO-214AB (SMC) package; VC = 58.1 V @ 10.3 A; RθJA = 120 °C/W; 600 W rating | Automotive-grade qualification; larger 7.1 × 6.2 mm body; unsuitable for space-constrained consumer/medical designs | Choose for automotive powertrain or chassis modules requiring AEC-Q101 certification and higher mechanical robustness. |
Compared with SMAJ36A-E3/57T and SMCJ36A-QH, the 6DFN39A-M3/I delivers superior board-area efficiency, AOI-compatible assembly, and lower thermal resistance to mount-making it optimal for high-density, cost-sensitive industrial and medical electronics where footprint and process yield are critical.
Availability
6DFN39A-M3/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive gate protection, and medical imaging signal conditioning requiring stable component supply, consistent M3-grade material compliance, and full traceability.
Supply support for 6DFN39A-M3/I 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 reliability, precision, and application-specific optimization.
The 6DFN39A-M3/I belongs to Vishay's TRANSZORB® DFN family, engineered for high-efficiency transient suppression in space-constrained, high-reliability applications where low profile, AOI compatibility, and stable clamping are mandatory.
FAQ
What is the exact breakdown voltage tolerance for 6DFN39A-M3/I?
The 6DFN39A-M3/I has a ±5 % breakdown voltage tolerance, confirmed by its "A" suffix in the device code and verified in the Electrical Characteristics table: VBR min/typ/max = 37.1 V / 39.0 V / 41.0 V at 1.0 mA test current. This tolerance ensures predictable turn-on behavior across production lots and temperature ranges without requiring binning or calibration.
Does 6DFN39A-M3/I support reflow soldering at 260 °C peak temperature?
Yes, the 6DFN39A-M3/I meets J-STD-020 MSL Level 1 with a maximum lead-free reflow peak temperature of 260 °C. Its DFN3820A package is qualified for standard Pb-free reflow profiles without preconditioning or baking, enabling direct integration into high-volume SMT lines with zero floor-life restrictions.
How does the clamping voltage of 6DFN39A-M3/I compare to its stand-off voltage?
The 6DFN39A-M3/I clamps at 53.9 V (VC) when subjected to its rated 11.1 A peak pulse current (10/1000 μs), which is 20.6 V above its 33.3 V stand-off voltage (VWM). This 62 % overvoltage margin ensures protected ICs remain within absolute maximum ratings during worst-case transients while minimizing leakage during normal operation.
Is the heatsink pad of 6DFN39A-M3/I electrically active?
Yes, the exposed thermal pad on the 6DFN39A-M3/I is the anode terminal and must be soldered to a PCB copper area serving as both thermal path and circuit node. Per the datasheet, polarity is marked by a cathode band; the pad connects directly to system ground or power return, not left floating or insulated.
Can 6DFN39A-M3/I replace SMAJ36A in existing designs?
No direct replacement is guaranteed: although both have similar VBR (~36–39 V) and PPPM (600 W), the 6DFN39A-M3/I uses DFN3820A (3.95 × 2.18 mm) versus SMAJ36A's DO-214AC (4.5 × 2.7 mm), and differs in pinout, thermal path, and clamping curve. Layout redesign and validation per IEC 61000-4-5 are required before substitution.
6DFN39A-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- 2-VDFN
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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
6DFN39A-M3/I FAQ
1.How can I place an order for 6DFN39A-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 6DFN39A-M3/I 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 6DFN39A-M3/I reliable?
The price and inventory of 6DFN39A-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 6DFN39A-M3/I is usually 5 days.
3.What payment methods are accepted for 6DFN39A-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 6DFN39A-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 6DFN39A-M3/I?
6DFN39A-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 6DFN39A-M3/I 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 6DFN39A-M3/I?
For technical support, including 6DFN39A-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 6DFN39A-M3/I requirements.
6.How does Aetrix verify that 6DFN39A-M3/I is sourced from the original manufacturer or authorized distributors?
All 6DFN39A-M3/I 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 6DFN39A-M3/I meets industry standards.
7.What is the process for return or replacement of 6DFN39A-M3/I?
All 6DFN39A-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with 6DFN39A-M3/I, 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 6DFN39A-M3/I part is unused and in its original packaging.
Return procedure for 6DFN39A-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
6DFN39A-M3/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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