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Vishay T6N51AHM3/H
- Part No.:
- T6N51AHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
T6N51AHM3/H.pdf
- Description:
- 600W,51V 5%, DFN3820A PAR
- Quantity:
- Payment:
- Shipping:
Inventory:4,441
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Product details
Overview
T6N51AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor in DFN3820A package, featuring 51 V nominal breakdown voltage (VBR), 43.6 V stand-off voltage (VWM), 70.1 V maximum clamping voltage at 8.6 A peak pulse current, and 600 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and rated for TJ = 185 °C, designed for automotive sensor line protection against load dump and ESD.
For engineers reviewing the T6N51AHM3/H datasheet, T6N51AHM3/H pinout, T6N51AHM3/H application, or T6N51AHM3/H equivalent, key selection criteria include clamping performance at automotive temperature extremes, side-wettable flank compatibility with AOI, and MSL Level 1 reflow capability up to 260 °C.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with junction passivation optimized for high-temperature stability. Its unidirectional configuration provides low-leakage reverse blocking up to 43.6 V while delivering precise clamping during transients.
The DFN3820A package enables thermal resistance of RθJM = 5 °C/W (typ) to the PCB mount pad and supports automated placement with solderable matte tin terminals compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (nom) | 51.0 V - ensures reliable triggering above system operating voltage while maintaining margin against false clamping |
| VWM | 43.6 V - maximum continuous reverse voltage before leakage exceeds 1 μA, compatible with 36 V automotive supply rails |
| VC @ IPPM | 70.1 V - clamping voltage at 8.6 A peak pulse current defines worst-case overvoltage seen by protected ICs |
| PPPM | 600 W - peak surge power handling per 10/1000 μs waveform, sufficient for ISO 7637-2 Pulse 1 & 2a |
| TJ max | 185 °C - enables operation in under-hood environments without derating in most automotive mounting configurations |
| ESD immunity | ±30 kV contact discharge - meets IEC 61000-4-2 Level 4 for robustness in sensor interface circuits |
| Package | DFN3820A - 3.95 mm × 2.18 mm footprint with side-wettable flanks for AOI-compatible solder joint inspection |
Pinout & Package
DFN3820A is a 2-terminal leadless package with cathode marked by color band; anode connects to exposed thermal pad. Dimensions: 3.95 mm × 2.18 mm × 0.88 mm (L × W × H), compatible with SMP (DO-220AA) outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (thermal pad) | Common reference and heat sink node | Connected to PCB ground plane for low-inductance path and thermal dissipation; must be soldered to ≥100 mm² copper area |
| Cathode (top-side marked terminal) | Transient current return path | Connected to protected signal line; polarity marking ensures correct orientation during automated placement |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable flanks | Enables 100% automated optical inspection (AOI) of solder fillet integrity without X-ray |
| AEC-Q101 qualification | Validated reliability for automotive applications including temperature cycling, HTRB, and ESD stress |
| Junction passivation | Reduces parameter drift over lifetime under high-temperature bias conditions (TJ = 150 °C) |
| MSL Level 1 rating | Allows unlimited floor life and single reflow at 260 °C peak without baking preconditioning |
| Halogen-free & RoHS | Complies with automotive material compliance requirements (JESD201 Class 2 whisker test, UL 94 V-0) |
Applications
| Automotive Sensor Protection | Power Line Surge Suppression |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground, clamping transients within 1 ns response time. Use Value: Limits voltage excursion to ≤70.1 V during 8.6 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding 12 V/24 V power distribution networks in ADAS domain controllers against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (battery disconnect). IC Role / Device Role / Timing Role: Primary transient suppressor on main power rail input, coordinated with upstream fuse and downstream DC-DC converter. Use Value: Absorbs 600 W peak energy without degradation, maintaining VWM = 43.6 V to avoid interference with normal 36 V battery regulation. |
| Infotainment Interface Protection | Body Control Module I/O Protection |
Use Scenario: Shielding USB, HDMI, or LVDS interfaces in head units from ESD events (IEC 61000-4-2 ±30 kV) and cable discharge. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100 pF at VWM) placed directly at connector entry point. Use Value: Clamps ESD pulses below 70.1 V within nanoseconds while adding <1 pF parasitic capacitance to preserve signal integrity at 480 Mbps. | Use Scenario: Securing GPIO, PWM, and LIN lines in door modules and seat controllers exposed to harness-level transients during vehicle assembly and service. IC Role / Device Role / Timing Role: Discrete TVS on each I/O line, leveraging DFN3820A's small size to fit dense connector routing. Use Value: 0.88 mm height allows placement beneath connectors; side-wettable flanks ensure solder joint quality verification in high-volume SMT lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ51A | DO-214AC package (larger footprint, no side-wettable flanks); 51 V VBR, 70.1 V VC, same PPPM | Lacks AOI support and MSL Level 1; requires manual solder joint inspection | Preferred where legacy board space permits and AOI is not required |
| SMCJ51A | DO-214AB package; higher PPPM = 1500 W but larger size and lower thermal efficiency (RθJA > 200 °C/W) | Better surge margin but unsuitable for compact automotive modules due to 7.11 mm × 6.22 mm footprint | Select when system-level surge testing exceeds 600 W requirements |
Compared with SMAJ51A and SMCJ51A, T6N51AHM3/H delivers identical clamping performance in a 3.95 mm × 2.18 mm DFN package with verified AOI compatibility and AEC-Q101 qualification-enabling smaller, more inspectable, and automotive-grade designs without sacrificing electrical specs.
Availability
T6N51AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, power line surge suppression, and infotainment interface hardening requiring stable component supply across production lifecycles.
Supply support for T6N51AHM3/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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The T6N51AHM3/H belongs to Vishay's PAR® TVS family, engineered specifically for automotive-grade transient suppression with emphasis on high-temperature operation, AOI-ready packaging, and AEC-Q101 compliance.
FAQ
What is the breakdown voltage tolerance for T6N51AHM3/H?
The T6N51AHM3/H has a breakdown voltage tolerance of ±5 %, with minimum VBR = 48.5 V and maximum VBR = 53.6 V at 1.0 mA test current. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage margin design in automotive systems where T6N51AHM3/H is deployed.
Is T6N51AHM3/H compatible with lead-free reflow processes?
Yes, T6N51AHM3/H is fully compatible with lead-free reflow, meeting MSL Level 1 per J-STD-020 and supporting peak temperatures up to 260 °C. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102, and the HM3 suffix confirms halogen-free, RoHS-compliant construction-making T6N51AHM3/H suitable for modern automotive manufacturing lines.
Does T6N51AHM3/H require a heatsink for 600 W pulse handling?
No external heatsink is required for single-pulse 600 W (10/1000 μs) events. The DFN3820A package achieves RθJM = 5 °C/W (typ) to the PCB mount pad; proper layout with ≥100 mm² copper area under the anode pad ensures junction temperature remains within 185 °C limit. T6N51AHM3/H relies on PCB thermal mass-not external heatsinks-for transient energy dissipation.
How does the temperature coefficient affect T6N51AHM3/H's VBR at elevated junction temperatures?
T6N51AHM3/H has a typical VBR temperature coefficient αT = 0.093 %/°C. At TJ = 150 °C, VBR increases by ~11.6 % over its 25 °C value, reaching ~56.8 V. This positive drift is accounted for in automotive design margins, ensuring T6N51AHM3/H maintains safe standoff while preserving clamping effectiveness across full operating range.
Can T6N51AHM3/H be used in bidirectional configurations?
No, T6N51AHM3/H is strictly unidirectional, as confirmed by its "A" polarity suffix and cathode-marked DFN3820A package. For bidirectional protection, Vishay offers complementary parts such as T6N51CAHM3/H. Using T6N51AHM3/H in reverse-biased AC signal paths would result in forward conduction and failure; always verify polarity alignment in schematic and layout for T6N51AHM3/H.
T6N51AHM3/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):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- 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
T6N51AHM3/H FAQ
1.How can I place an order for T6N51AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T6N51AHM3/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 T6N51AHM3/H reliable?
The price and inventory of T6N51AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T6N51AHM3/H is usually 5 days.
3.What payment methods are accepted for T6N51AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T6N51AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T6N51AHM3/H?
T6N51AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T6N51AHM3/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 T6N51AHM3/H?
For technical support, including T6N51AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T6N51AHM3/H requirements.
6.How does Aetrix verify that T6N51AHM3/H is sourced from the original manufacturer or authorized distributors?
All T6N51AHM3/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 T6N51AHM3/H meets industry standards.
7.What is the process for return or replacement of T6N51AHM3/H?
All T6N51AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T6N51AHM3/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 T6N51AHM3/H part is unused and in its original packaging.
Return procedure for T6N51AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T6N51AHM3/H Tags
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