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Vishay T6N18AHM3/H
- Part No.:
- T6N18AHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
T6N18AHM3/H.pdf
- Description:
- 600W,18V 5%, DFN3820A PAR
- Quantity:
- Payment:
- Shipping:
Inventory:8,985
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Product details
Overview
T6N18AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor in DFN3820A package, featuring 18.0 V nominal breakdown voltage (VBR), 15.3 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 T6N18AHM3/H datasheet, T6N18AHM3/H pinout, T6N18AHM3/H application, or T6N18AHM3/H equivalent, this page delivers verified electrical parameters, thermal performance at TJ = 185 °C, side-wettable DFN package compatibility with AOI, and direct AEC-Q101–qualified alternatives for automotive electronics design.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with junction passivation optimized for high-temperature stability up to TJ = 185 °C and low clamping voltage (VC = 25.5 V at IPPM). Its unidirectional configuration provides precise reverse-biased transient suppression without forward conduction during normal operation.
The DFN3820A package enables automated placement and supports MSL level 1 reflow (260 °C peak), while its side-wettable flanks allow reliable solder joint inspection via AOI. Thermal resistance junction-to-mount is 5 °C/W, enabling effective heat transfer to PCB copper pads under surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 18.0 V - defines minimum voltage at which device enters avalanche conduction during transient events |
| VWM | 15.3 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| PPPM (10/1000 μs) | 600 W - peak transient energy handling capability under standardized surge waveform |
| VC at IPPM | 25.5 V - clamped voltage seen by protected circuit when subjected to max rated surge current |
| TJ max. | +185 °C - enables operation in under-hood automotive environments without derating |
| ESD immunity | ±30 kV (IEC 61000-4-2) - withstands high-energy electrostatic discharge without degradation |
| RθJM | 5 °C/W - low thermal resistance path from junction to mounting pad improves surge survivability |
Pinout & Package
Package: DFN3820A - leadless, halogen-free, RoHS-compliant, side-wettable flanks, 0.88 mm typical height, compatible with SMP (DO-220AA) footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Heatsink) | Current return path / thermal interface | Exposed metal pad serves as primary thermal dissipation path and electrical anode connection |
| Cathode (K) | Transient sensing and clamping node | Marked end with color band; connects to protected line to initiate avalanche clamping during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable DFN flanks | Enables 100% automated optical inspection (AOI) of solder joints without X-ray |
| Junction passivation | Stabilizes VBR temperature coefficient (αT = 0.080 %/°C) across -65 °C to +185 °C range |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD stress per JESD22-A108 |
| Low-profile height | 0.88 mm typical - supports ultra-thin modules and space-constrained PCB layouts |
| Halogen-free & Pb-free | M3 suffix confirms compliance with JEDEC J-STD-020 MSL level 1 and JESD201 class 2 whisker resistance |
Applications
| Automotive Sensor Protection | Powertrain Control Unit (PCU) |
|---|---|
Use Scenario: Protecting LIN/CAN bus signal lines in ambient temperature-cycling environments (e.g., engine bay proximity). IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes induced by relay coil de-energization or load dump. Use Value: Prevents latch-up or gate oxide damage in downstream transceivers with 15.3 V VWM margin above 12 V nominal supply. |
Use Scenario: Safeguarding high-side driver ICs controlling fuel injectors or ignition coils during inductive kickback events. IC Role / Device Role / Timing Role: Fast-response voltage clamp limiting drain-source voltage overshoot on N-channel MOSFETs. Use Value: Enables robust 600 W surge handling at TJ = 185 °C without derating, preserving driver lifetime. |
| ADAS Camera Module | EV Battery Management System (BMS) |
Use Scenario: Shielding image sensor I/O lines from ESD and cable discharge events in rear-view camera assemblies. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor placed directly at connector entry point. Use Value: 30 kV contact ESD rating meets ISO 10605 requirements while maintaining signal integrity on 100 Mbps LVDS links. |
Use Scenario: Protecting isolated communication interfaces (e.g., SPI, UART) between BMS master and cell monitoring ICs. IC Role / Device Role / Timing Role: Standoff-rated TVS preventing false triggering or latch-up during battery pack fault transients. Use Value: 1.0 μA IR at VWM ensures negligible standby current draw across wide temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18AHE3/5BT | DO-214AC (SMA) package; 17.1–18.9 V VBR range; RθJA = 40 °C/W; not AEC-Q101 qualified | Higher profile (2.3 mm height); unsuitable for AOI; limited to industrial-grade automotive modules | Select when legacy SMA footprint reuse is required and AEC-Q101 is not mandated |
| SMCJ18A-Q | DO-214AB (SMC) package; same VBR range; 1500 W PPPM; RθJA = 15 °C/W; AEC-Q101 qualified | Larger footprint (7.11 × 6.22 mm); higher surge capacity but incompatible with DFN3820A layout | Choose for higher-power systems where board space allows and 1500 W rating is needed |
Compared with SMAJ18AHE3/5BT and SMCJ18A-Q, T6N18AHM3/H uniquely combines AEC-Q101 qualification, DFN3820A miniaturization, side-wettable flanks for AOI, and 600 W surge capability-making it optimal for next-generation compact automotive ECUs requiring zero visual inspection gaps and full temperature-range reliability.
Availability
T6N18AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, powertrain control units, ADAS camera modules, and EV battery management systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for T6N18AHM3/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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-temperature, and automotive-qualified components.
The T6N18AHM3/H belongs to Vishay's PAR® (Protection Array Rectifier) family, engineered specifically for robust transient suppression in harsh automotive environments where AEC-Q101 compliance, thermal resilience, and AOI-compatible packaging are mandatory.
FAQ
What is the breakdown voltage tolerance for T6N18AHM3/H?
The T6N18AHM3/H has a ±5 % breakdown voltage tolerance, confirmed by its "A" suffix in the part number. Its VBR range is specified as 17.1 V (min) to 18.9 V (max) at IT = 1.0 mA, with 18.0 V nominal. This tight tolerance ensures consistent clamping behavior across production lots and supports precise system-level overvoltage margining in automotive designs.
Is T6N18AHM3/H compatible with lead-free reflow processes?
Yes, T6N18AHM3/H is fully compatible with lead-free reflow, meeting MSL level 1 per J-STD-020 with a maximum peak temperature of 260 °C. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102 solderability standards, and the HM3 suffix confirms halogen-free, RoHS-compliant, and Pb-free construction validated for automotive manufacturing.
How does the DFN3820A package of T6N18AHM3/H improve thermal performance?
The DFN3820A package of T6N18AHM3/H features an exposed anode pad that serves as both electrical terminal and thermal interface, achieving RθJM = 5 °C/W. This low junction-to-mount resistance enables efficient heat transfer to the PCB copper pour during 600 W transient events, sustaining TJ ≤ 185 °C without thermal runaway-critical for under-hood automotive deployments.
What is the maximum reverse leakage current of T6N18AHM3/H at 150 °C?
At TJ = 150 °C and VWM = 15.3 V, the maximum reverse leakage current (ID) for T6N18AHM3/H is 1.0 μA. This ultra-low leakage ensures minimal power loss in always-on automotive subsystems such as body control modules and remains stable across extended temperature excursions, supporting ASIL-B functional safety requirements.
Does T6N18AHM3/H meet IEC 61000-4-2 ESD immunity requirements?
Yes, T6N18AHM3/H is rated for ±30 kV contact discharge and ±30 kV air discharge per IEC 61000-4-2. This immunity level exceeds standard automotive EMC requirements and protects sensitive downstream ICs-including CAN transceivers and sensor signal conditioners-from ESD-induced latch-up or parametric shift during assembly and field operation.
T6N18AHM3/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):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.5V
- Current - Peak Pulse (10/1000µs):
- 23.5A
- 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
T6N18AHM3/H FAQ
1.How can I place an order for T6N18AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T6N18AHM3/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 T6N18AHM3/H reliable?
The price and inventory of T6N18AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T6N18AHM3/H is usually 5 days.
3.What payment methods are accepted for T6N18AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T6N18AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T6N18AHM3/H?
T6N18AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T6N18AHM3/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 T6N18AHM3/H?
For technical support, including T6N18AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T6N18AHM3/H requirements.
6.How does Aetrix verify that T6N18AHM3/H is sourced from the original manufacturer or authorized distributors?
All T6N18AHM3/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 T6N18AHM3/H meets industry standards.
7.What is the process for return or replacement of T6N18AHM3/H?
All T6N18AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T6N18AHM3/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 T6N18AHM3/H part is unused and in its original packaging.
Return procedure for T6N18AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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