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Vishay T6N39AHM3/H
- Part No.:
- T6N39AHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
T6N39AHM3/H.pdf
- Description:
- 600W,39V 5%, DFN3820A PAR
- Quantity:
- Payment:
- Shipping:
Inventory:4,639
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Product details
Overview
T6N39AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor in DFN3820A package, rated for 39 V nominal breakdown voltage (VBR), 33.3 V stand-off voltage (VWM), and 600 W peak pulse power (10/1000 μs). It delivers 11.1 A peak pulse current and clamps to 53.9 V at IPPM, with AEC-Q101 qualification and 185 °C junction temperature capability - deployed for automotive sensor signal line protection against load-switching transients and ESD.
For engineers reviewing the T6N39AHM3/H datasheet, T6N39AHM3/H pinout, T6N39AHM3/H application, or T6N39AHM3/H equivalent, this page provides verified electrical parameters, thermal resistance values (RθJA = 175 °C/W), polarity marking (cathode band), AOI-compatible side-wettable flanks, and direct AEC-Q101-compliant alternatives for automotive-grade transient suppression design.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with junction passivation optimized for high-reliability operation up to TJ = 185 °C. Its unidirectional configuration enables precise clamping on positive-going transients while maintaining low leakage (≤1.0 μA at VWM) across -65 °C to +185 °C operating range.
The DFN3820A package features matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102, HM3 suffix meeting JESD 201 Class 2 whisker test, and MSL Level 1 rating with 260 °C reflow peak - enabling robust automated placement and optical inspection in automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - ensures reliable conduction onset above system operating voltage with ±5 % tolerance |
| VWM | 33.3 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA, compatible with 3.3 V–24 V signal rails |
| PPPM (10/1000 μs) | 600 W - sustains high-energy transients without failure per IEC 61000-4-2 surge immunity testing |
| VC at IPPM | 53.9 V - clamping voltage under 11.1 A surge, limiting downstream IC stress during transient events |
| TJ max. | +185 °C - supports under-hood automotive environments and high-power density board layouts |
| RθJA | 175 °C/W - defines thermal derating limit for sustained power dissipation on standard FR4 PCB |
| ESD Rating | ±30 kV (contact/air) - exceeds IEC 61000-4-2 Level 4 for robust electrostatic discharge protection |
Pinout & Package
Package: DFN3820A - leadless, 2-terminal surface-mount package with side-wettable flanks (0.078 × 0.086 inch / 1.98 × 2.18 mm), cathode denoted by color band, heatsink/anode on bottom thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (thermal pad) | Common reference and heat path | Connected to PCB copper pour for thermal management; electrically tied to cathode via internal structure in unidirectional configuration |
| Cathode (marked terminal) | Transient current sink | Accepts positive surge current during overvoltage events; polarity marking ensures correct orientation in series with protected line |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joint quality without X-ray, critical for automotive process validation |
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling |
| Junction passivation | Reduces surface leakage and improves long-term reliability under high humidity and bias conditions |
| Low-profile height (0.88 mm) | Minimizes board stack height in space-constrained modules such as ADAS camera ECUs and battery management sensors |
| Halogen-free & RoHS-compliant | Meets automotive environmental compliance standards and eliminates corrosive halogen emissions during reflow or field failure |
Applications
| Automotive Sensor Protection | Power Supply Rail Clamping |
|---|---|
Use Scenario: Protecting LIN/CAN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from inductive switching spikes in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp positive transients before reaching sensitive input pins. Use Value: Limits voltage excursion to ≤53.9 V during 10/1000 μs surges, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding 12 V or 24 V power rails feeding microcontrollers and motor drivers in body control modules. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor absorbing energy from load dump or alternator ripple events. Use Value: Withstands 600 W peak pulse power and operates up to +185 °C, ensuring uninterrupted function during under-hood thermal excursions. |
| Industrial I/O Protection | ESD-Sensitive Interface Lines |
Use Scenario: Shielding digital I/O lines (e.g., RS-485, GPIO) in programmable logic controllers exposed to factory floor EMI and relay contact bounce. IC Role / Device Role / Timing Role: Fast-response clamping device shunting surge current away from isolation barriers and level translators. Use Value: Achieves <1 ns response time and ±30 kV ESD immunity, reducing field failure rates in harsh industrial environments. |
Use Scenario: Guarding USB, HDMI, or Ethernet PHY interfaces in infotainment head units against human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance (typ. 120 pF at 0 V) unidirectional suppressor placed inline with differential pairs. Use Value: Maintains signal integrity with minimal insertion loss due to compact DFN3820A footprint and controlled parasitic capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | DO-214AC package (SMA), 36 V VBR, 58.1 V VC at 10.3 A, RθJA ≈ 50 °C/W higher than T6N39AHM3/H | Higher profile and lower thermal performance; suitable only where board height and thermal budget allow | Select when legacy SMA footprint compatibility is required and AEC-Q101 is not mandated |
| SMCJ36AHE3/57T | DO-214AB package (SMC), 36 V VBR, 58.1 V VC at 10.3 A, 1500 W PPPM rating but larger footprint and no side-wettable flanks | Higher power handling but incompatible with AOI and unsuitable for dense automotive PCBs | Choose only for non-automotive industrial systems requiring >600 W surge margin and no automated inspection requirement |
Compared with SMAJ36A-E3/57T and SMCJ36AHE3/57T, T6N39AHM3/H offers superior thermal resistance (RθJM = 6.5 °C/W), AEC-Q101 qualification, side-wettable flanks for AOI, and 0.88 mm profile - making it the preferred choice for new automotive designs demanding miniaturization, process traceability, and extended temperature operation.
Availability
T6N39AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, power rail clamping, and industrial I/O safeguarding requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for T6N39AHM3/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 MOSFETs with emphasis on reliability, power efficiency, and automotive-grade qualification.
The T6N39AHM3/H belongs to Vishay's PAR® family of surface-mount TVS diodes engineered specifically for high-temperature, high-reliability automotive applications - delivering robust transient suppression in compact DFN packages with AEC-Q101 validation.
FAQ
What is the breakdown voltage tolerance of T6N39AHM3/H?
The T6N39AHM3/H has a ±5 % breakdown voltage tolerance, with minimum VBR = 37.1 V and maximum VBR = 41.0 V at IT = 1.0 mA. This tight tolerance ensures predictable clamping behavior across production lots and temperature ranges, critical for automotive safety-critical circuits where overvoltage margins must be precisely controlled. The nominal 39 V rating is specified at 25 °C and exhibits a temperature coefficient of +0.091 %/°C.
Is T6N39AHM3/H compatible with lead-free reflow processes?
Yes, T6N39AHM3/H is fully compatible with lead-free reflow processes, rated for MSL Level 1 per J-STD-020 and qualified for a maximum peak temperature of 260 °C. Its matte tin-plated terminals meet J-STD-002 solderability requirements, and the DFN3820A package is designed for reliable wetting during standard 7-zone reflow profiles used in automotive electronics manufacturing.
Does T6N39AHM3/H require a thermal pad connection to PCB ground?
Yes, the thermal pad (anode) of T6N39AHM3/H must be soldered to a PCB copper pour connected to system ground or chassis ground to achieve specified thermal resistance (RθJM = 6.5 °C/W). Omitting this connection degrades thermal performance and risks exceeding TJ = 185 °C under repeated surge conditions - particularly critical in automotive under-hood applications where ambient temperatures exceed 105 °C.
How does T6N39AHM3/H perform under high-temperature operating conditions?
T6N39AHM3/H maintains full functionality up to TJ = 185 °C, with VBR increasing linearly per αT = +0.091 %/°C and IR remaining ≤1.0 μA at VWM up to 150 °C. Derating curves in the datasheet confirm usable peak pulse current down to ~70 % of rated IPPM at TJ = 150 °C, enabling reliable deployment in engine control, transmission, and battery monitoring modules where junction temperatures routinely exceed 125 °C.
What is the meaning of the 'HM3' suffix in T6N39AHM3/H?
The 'HM3' suffix in T6N39AHM3/H indicates halogen-free, RoHS-compliant construction with Pb-free terminations, AEC-Q101 qualification, and compliance with JESD 201 Class 2 whisker resistance. The '/H' denotes tape-and-reel packaging in 7-inch reels (3500 units), distinguishing it from the '/I' variant (13-inch reels, 14000 units). This suffix confirms full automotive-grade material and process compliance.
T6N39AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- 2-VDFN
- Series:
- PAR®
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN3820A
T6N39AHM3/H FAQ
1.How can I place an order for T6N39AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T6N39AHM3/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 T6N39AHM3/H reliable?
The price and inventory of T6N39AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T6N39AHM3/H is usually 5 days.
3.What payment methods are accepted for T6N39AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T6N39AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T6N39AHM3/H?
T6N39AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T6N39AHM3/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 T6N39AHM3/H?
For technical support, including T6N39AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T6N39AHM3/H requirements.
6.How does Aetrix verify that T6N39AHM3/H is sourced from the original manufacturer or authorized distributors?
All T6N39AHM3/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 T6N39AHM3/H meets industry standards.
7.What is the process for return or replacement of T6N39AHM3/H?
All T6N39AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T6N39AHM3/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 T6N39AHM3/H part is unused and in its original packaging.
Return procedure for T6N39AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T6N39AHM3/H Tags
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