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Vishay T6N12AHM3/H
- Part No.:
- T6N12AHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
T6N12AHM3/H.pdf
- Description:
- 600W,12V 5%, DFN3820A PAR
- Quantity:
- Payment:
- Shipping:
Inventory:5,165
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Product details
Overview
T6N12AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in DFN3820A package, featuring 12 V nominal breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive-grade reliability. It protects MOSFETs and sensor signal lines against inductive switching transients and lightning surges.
For engineers reviewing the T6N12AHM3/H datasheet, T6N12AHM3/H pinout, T6N12AHM3/H application, or T6N12AHM3/H equivalent, key selection criteria include its 185 °C junction temperature rating, side-wettable flanks for AOI compatibility, unidirectional clamping behavior, and halogen-free RoHS-compliant construction with HM3 suffix.
Technical Context
The T6N12AHM3/H employs passivated anisotropic rectifier technology optimized for high-temperature stability and low-leakage performance. Its unidirectional configuration provides precise reverse-biased clamping with 16.7 V maximum clamping voltage at rated peak pulse current.
Designed for automotive environments, it meets MSL Level 1 per J-STD-020, withstands 260 °C reflow peak, and passes JESD201 Class 2 whisker testing. Thermal resistance junction-to-mount is 5 °C/W, enabling efficient heat transfer to PCB copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 11.4 / 12.0 / 12.6 V - defines precise voltage threshold where device enters avalanche conduction under 1 mA test current |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage exceeds 2 μA at 25 °C |
| IPPM (10/1000 μs) | 35.9 A - peak surge current capability that determines clamping robustness during transient events |
| VC @ IPPM | 16.7 V - maximum clamped voltage seen by protected circuit during full-rated surge, limiting stress on downstream ICs |
| TJ max | +185 °C - enables operation in under-hood automotive locations without derating up to extreme ambient temperatures |
| Package | DFN3820A - 3.8 mm × 2.0 mm × 0.88 mm low-profile leadless package with side-wettable flanks for automated optical inspection |
| ESD immunity | ±30 kV (contact/air) per IEC 61000-4-2 - provides system-level ESD protection without external components |
Pinout & Package
DFN3820A package: 2-terminal, single-channel unidirectional TVS with cathode marked by color band; anode connected to exposed thermal pad (heatsink).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (thermal pad) | Common reference and primary heat path | Exposed copper pad soldered to PCB ground plane for thermal dissipation and low-inductance return path |
| Cathode (marked pin) | Transient current sink | Connected to protected line; conducts surge current to anode when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics under stress conditions |
| Side-wettable flanks | Enables automated optical inspection of solder joint quality on both side edges of DFN package |
| Junction passivation | Reduces surface leakage and improves long-term reliability in humid or contaminated environments |
| Halogen-free & RoHS | Complies with automotive material compliance requirements (HM3 suffix) and global environmental regulations |
| Low profile (0.88 mm) | Supports ultra-thin module designs and high-density PCB layouts without mechanical interference |
Applications
| Automotive Sensor Protection | Power Supply Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional transient suppressor placed directly at connector or IC input pins to clamp overvoltage before reaching sensitive circuitry. Use Value: Limits clamped voltage to 16.7 V during 35.9 A surge, preventing latch-up or gate oxide damage in 12 V automotive systems. | Use Scenario: Safeguarding 12 V power rails feeding microcontrollers and communication ICs in infotainment head units. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive switching spikes from DC-DC converters and relay coils. Use Value: Maintains 10.2 V stand-off while delivering 600 W pulse power handling, ensuring stable rail operation during cold-crank and jump-start events. |
| MOSFET Gate Protection | Signal Line Surge Suppression |
Use Scenario: Shielding high-side N-channel MOSFET gates in motor drivers from Miller-induced voltage overshoot and inductive kickback. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp placed between gate and source to limit VGS excursion below absolute maximum rating. Use Value: Sub-1 ns response time and 16.7 V clamping prevent gate oxide breakdown while supporting 1 MHz PWM switching frequencies. | Use Scenario: Hardening LIN or SENT signal lines connecting battery management systems to cell monitors against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF at 0 V) TVS integrated into signal trace routing to minimize signal integrity impact. Use Value: 30 kV IEC 61000-4-2 contact discharge immunity ensures functional safety compliance without adding series impedance or filtering delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | DO-214AC package, 1.5 mm height, higher RθJA (190 °C/W), same VBR/VC specs | Less suitable for space-constrained automotive modules; requires larger PCB footprint and lacks side-wettable flanks | Select SMAJ12A only if legacy through-hole or larger SMT assembly infrastructure is in place and AOI is not required |
| SMCJ12A | DO-214AB package, 2.5 mm height, 1500 W rating, higher VC (21.2 V), no AEC-Q101 qualification | Used in industrial power supplies where higher surge margin is needed but automotive qualification is unnecessary | Choose SMCJ12A for non-automotive 12 V systems requiring >1000 W surge handling, accepting larger size and lower reliability grade |
Compared with SMAJ12A and SMCJ12A, the T6N12AHM3/H delivers superior board-level integration via its 0.88 mm DFN3820A package, AEC-Q101 validation, and AOI-compatible side-wettable flanks-making it the preferred choice for next-generation automotive electronics where miniaturization, inspection traceability, and qualification rigor are mandatory.
Availability
T6N12AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, power supply rail clamping, and MOSFET gate protection requiring stable component supply across production ramps and multi-year vehicle programs.
Supply support for T6N12AHM3/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 optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The T6N12AHM3/H belongs to Vishay's PAR® (Protection and Regulation) TVS family, engineered specifically for robust transient suppression in harsh automotive environments where temperature stability, AEC-Q101 compliance, and compact packaging are critical design requirements.
FAQ
What is the exact breakdown voltage range for T6N12AHM3/H at 1 mA test current?
The T6N12AHM3/H has a guaranteed breakdown voltage range of 11.4 V (minimum) to 12.6 V (maximum) at 1 mA test current, with 12.0 V nominal. This tight ±5 % tolerance ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 12 V automotive electronics without false triggering.
Is T6N12AHM3/H compatible with standard SMT reflow profiles?
Yes, T6N12AHM3/H is qualified to MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its DFN3820A package uses matte tin-plated terminals compliant with J-STD-002 and JESD22-B102, enabling reliable solder joint formation using industry-standard lead-free reflow profiles without moisture sensitivity concerns.
Does T6N12AHM3/H require a heatsink or thermal pad connection?
Yes-the exposed anode thermal pad of the T6N12AHM3/H must be soldered to a minimum 25 mm² copper area on the PCB to achieve specified thermal resistance (RθJM = 5 °C/W). Without proper thermal pad connection, junction temperature rise during surge events may exceed 185 °C, compromising reliability and clamping performance.
How does the clamping voltage of T6N12AHM3/H compare to similar 12 V TVS devices?
The T6N12AHM3/H clamps to a maximum of 16.7 V at its rated 35.9 A peak pulse current (10/1000 μs), which is among the lowest in its class. This 39 % overvoltage margin above VWM (10.2 V) provides tighter protection than many competing 12 V TVS diodes, reducing stress on downstream 15 V-tolerant ICs in automotive applications.
Can T6N12AHM3/H be used in bidirectional configurations?
No-T6N12AHM3/H is strictly unidirectional and must be oriented with cathode toward the protected line. For bidirectional protection, Vishay offers complementary parts such as T6N12CAHM3/H. Using T6N12AHM3/H in reverse polarity will result in forward conduction and failure under normal operating voltage.
T6N12AHM3/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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 35.9A
- 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
T6N12AHM3/H FAQ
1.How can I place an order for T6N12AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T6N12AHM3/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 T6N12AHM3/H reliable?
The price and inventory of T6N12AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T6N12AHM3/H is usually 5 days.
3.What payment methods are accepted for T6N12AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T6N12AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T6N12AHM3/H?
T6N12AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T6N12AHM3/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 T6N12AHM3/H?
For technical support, including T6N12AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T6N12AHM3/H requirements.
6.How does Aetrix verify that T6N12AHM3/H is sourced from the original manufacturer or authorized distributors?
All T6N12AHM3/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 T6N12AHM3/H meets industry standards.
7.What is the process for return or replacement of T6N12AHM3/H?
All T6N12AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T6N12AHM3/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 T6N12AHM3/H part is unused and in its original packaging.
Return procedure for T6N12AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T6N12AHM3/H Tags
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