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Vishay General Semiconductor - Diodes Division T6N39AHM3/I
- Part No.:
- T6N39AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
T6N39AHM3/I.pdf
- Description:
- LOW-PROFILE VERSION 600 W UNI-DI
- Quantity:
- Payment:
- Shipping:
Inventory:14,000
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Product details
Overview
T6N39AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor in DFN3820A package, featuring 39 V nominal breakdown voltage (VBR), 33.3 V stand-off voltage (VWM), 53.9 V maximum clamping voltage at 11.1 A peak pulse current, and 600 W peak pulse power rating (10/1000 μs). It is AEC-Q101 qualified and rated for TJ = 185 °C, designed for automotive sensor line protection.
For engineers reviewing the T6N39AHM3/I datasheet, T6N39AHM3/I pinout, T6N39AHM3/I application, or T6N39AHM3/I equivalent, key selection criteria include unidirectional clamping behavior, low-profile DFN3820A footprint with side-wettable flanks for AOI, 30 kV ESD immunity per IEC 61000-4-2, and thermal resistance RθJA ≤ 175 °C/W on FR4.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with junction passivation optimized for high-reliability operation under thermal stress. Its unidirectional configuration provides precise reverse-biased clamping during transients while maintaining low leakage (<1 μA at VWM) across temperature.
The DFN3820A package enables automated placement and supports high-density PCB layouts. Thermal performance is characterized by RθJM ≤ 6.5 °C/W to the mounting pad, enabling effective heat dissipation in automotive under-hood environments where ambient temperatures exceed 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - defines precise voltage threshold at which clamping initiates under 1 mA test current |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 53.9 V - clamped voltage seen by protected circuit during 11.1 A 10/1000 μs surge |
| PPPM | 600 W - peak transient energy absorption capability without failure |
| TJ max | +185 °C - enables use in high-temperature automotive zones without derating |
| ESD immunity | ±30 kV contact discharge - meets IEC 61000-4-2 Level 4 for robust system-level ESD protection |
| Package | DFN3820A - 3.95 mm × 2.18 mm × 0.88 mm low-profile leadless package with side-wettable flanks |
Pinout & Package
Package: DFN3820A - 2-terminal surface-mount device with anode (heatsink) and cathode (marked with color band) terminals. Dimensions: 3.95 mm × 2.18 mm × 0.88 mm. Matte tin-plated terminals, halogen-free, RoHS-compliant, AEC-Q101 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Heatsink / common reference node | Electrically connected to exposed copper pad; must be soldered to large PCB copper area for thermal management and low-inductance path |
| Cathode | Transient current sink | Connected to protected signal line; conducts surge current to ground/anode during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joints without X-ray, improving manufacturing yield in high-volume automotive assembly |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensors, and body electronics requiring zero-defect reliability |
| Junction passivation | Reduces long-term parameter drift under thermal cycling and humidity exposure, supporting >15-year field life in harsh environments |
| MSL Level 1 | Allows unlimited floor life and reflow up to 260 °C peak, eliminating moisture sensitivity handling constraints in SMT lines |
Applications
| Automotive Sensor Protection | Power Supply Rail Clamping |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle cabins. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp negative-going spikes while preserving DC bias integrity. Use Value: Maintains signal fidelity below 33.3 V stand-off while limiting transient overshoot to ≤53.9 V, preventing damage to 5 V or 3.3 V sensor interface ICs. | Use Scenario: Safeguarding 12 V or 24 V automotive power rails against ISO 7637-2 pulse 1, 2a, and 5a transients. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor absorbing energy from fast-rising surges before reaching downstream regulators or microcontrollers. Use Value: Withstands 600 W peak pulse power and 11.1 A surge current, ensuring rail stability during cranking and alternator load dump events. |
| ADAS Camera Interface Protection | Infotainment Display Data Lines |
Use Scenario: Shielding MIPI CSI-2 differential pairs in surround-view camera modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100 pF at VWM) placed on each data line to ground, minimizing signal distortion. Use Value: Provides ±30 kV IEC 61000-4-2 ESD protection without degrading 1.5 Gbps video signal integrity due to compact DFN3820A layout and controlled parasitics. | Use Scenario: Protecting LVDS or FPD-Link III video/data lines connecting head unit to TFT displays in dashboards. IC Role / Device Role / Timing Role: Bidirectional-capable layout (via unidirectional pairing) suppressing both positive and negative transients on high-speed serial links. Use Value: Leverages 0.88 mm profile and side-wettable flanks to fit tight spacing between connectors and display controllers while enabling AOI verification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | DO-214AC (SMA) package; higher RθJA (~150 °C/W); 36 V VWM; 58.1 V VC @ 10.3 A | Larger footprint (4.5 mm × 2.7 mm); not AEC-Q101 qualified; no side-wettable flanks | Select when legacy through-hole or larger SMT footprint is acceptable and automotive qualification is not required. |
| SMF36A | SOD-123FL package; 36 V VWM; 58.1 V VC @ 10.3 A; RθJA ~ 200 °C/W; AEC-Q101 qualified | Smaller 2.7 mm × 1.7 mm outline but lacks side-wettable flanks and AOI support; lower power rating (200 W) | Choose for space-constrained non-AOI production where 200 W surge capacity suffices and thermal budget allows higher junction rise. |
Compared with SMAJ36A-E3/57T and SMF36A, the T6N39AHM3/I delivers superior thermal performance (RθJM ≤ 6.5 °C/W), AEC-Q101 compliance with MSL Level 1, and manufacturability advantages via side-wettable flanks-making it optimal for new automotive designs demanding high reliability and automated assembly.
Availability
T6N39AHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, power rail clamping, ADAS camera interface hardening, and infotainment display data line safeguarding requiring stable component supply and full AEC-Q101 traceability.
Supply support for T6N39AHM3/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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability and automotive-grade performance.
The T6N39AHM3/I belongs to Vishay's PAR® (Protection and Regulation) TVS family, engineered specifically for robust transient suppression in automotive electronics where high-temperature operation, ESD resilience, and automated manufacturing compatibility are mandatory.
FAQ
What is the breakdown voltage tolerance of the T6N39AHM3/I?
The T6N39AHM3/I has a ±5 % breakdown voltage tolerance, specified as 37.1 V (min), 39.0 V (nominal), and 41.0 V (max) at 1 mA test current. This tight tolerance ensures consistent clamping behavior across production lots and supports precise circuit margining in automotive applications where overvoltage thresholds must remain predictable over temperature and lifetime.
Is the T6N39AHM3/I compatible with lead-free reflow processes?
Yes, the T6N39AHM3/I is fully compatible with lead-free reflow processes. It meets J-STD-020 MSL Level 1 with a maximum peak reflow temperature of 260 °C, and its matte tin-plated terminals are solderable per J-STD-002 and JESD 22-B102. The HM3 suffix confirms halogen-free, RoHS-compliant, and Pb-free construction.
Does the T6N39AHM3/I require a heatsink on the PCB?
The T6N39AHM3/I does not require an external heatsink but relies on proper PCB copper land design. Its anode terminal is the thermal pad; for optimal thermal performance, this pad must be connected to ≥1 cm² of internal or external copper plane using ≥4 thermal vias (0.3 mm diameter) to inner layers. This achieves RθJM ≤ 6.5 °C/W and prevents junction overheating during repeated 600 W surges.
How does the T6N39AHM3/I perform under high-temperature operating conditions?
The T6N39AHM3/I is rated for continuous operation up to +185 °C junction temperature and exhibits stable VBR with a temperature coefficient of +0.091 %/°C. At 150 °C, reverse leakage remains ≤1 μA at VWM, and clamping voltage increases only marginally-ensuring reliable protection in under-hood ECUs and transmission control modules where ambient temperatures exceed 125 °C.
Can the T6N39AHM3/I be used for bidirectional transient suppression?
No, the T6N39AHM3/I is a unidirectional TVS diode and is not suitable for bidirectional suppression in isolation. For bidirectional protection, two T6N39AHM3/I devices may be connected in series opposing configuration, or a dedicated bidirectional part such as the T6N39AHE3/I (if available) should be selected. The datasheet explicitly specifies "Unidirectional" polarity for the T6N39AHM3/I.
T6N39AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- 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 ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN3820A
T6N39AHM3/I FAQ
1.How can I place an order for T6N39AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for T6N39AHM3/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 T6N39AHM3/I reliable?
The price and inventory of T6N39AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T6N39AHM3/I is usually 5 days.
3.What payment methods are accepted for T6N39AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T6N39AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T6N39AHM3/I?
T6N39AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T6N39AHM3/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 T6N39AHM3/I?
For technical support, including T6N39AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T6N39AHM3/I requirements.
6.How does Aetrix verify that T6N39AHM3/I is sourced from the original manufacturer or authorized distributors?
All T6N39AHM3/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 T6N39AHM3/I meets industry standards.
7.What is the process for return or replacement of T6N39AHM3/I?
All T6N39AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with T6N39AHM3/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 T6N39AHM3/I part is unused and in its original packaging.
Return procedure for T6N39AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T6N39AHM3/I Tags
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