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Vishay T6N51CAHM3/I
- Part No.:
- T6N51CAHM3/I
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
T6N51CAHM3/I.pdf
- Description:
- 600W,51V 5%, DFN3820A BIDIR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:14,000
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Product details
Overview
T6N51CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount PAR® Transient Voltage Suppressor in DFN3820A package, with 51 V nominal breakdown voltage (±5 %), 43.6 V stand-off voltage, 70.1 V maximum clamping voltage at 8.6 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, targeting automotive sensor line and MOSFET gate protection.
For engineers reviewing the T6N51CAHM3/I datasheet, T6N51CAHM3/I pinout, T6N51CAHM3/I application, or T6N51CAHM3/I equivalent, this page delivers verified electrical parameters, thermal performance data, AEC-Q101 qualification status, DFN3820A mechanical dimensions, and automotive-grade ESD immunity (30 kV contact/air) - all critical for robust transient suppression design in high-reliability systems.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for junction stability up to 185 °C, enabling operation in under-hood automotive environments. Its bidirectional configuration provides symmetrical clamping for AC-coupled signal lines without polarity constraints.
The DFN3820A package features side-wettable flanks for automated optical inspection and supports JEDEC-compliant reflow profiles (MSL Level 1, 260 °C peak). Thermal resistance is specified as RθJA ≤ 175 °C/W and RθJM ≤ 6.5 °C/W, confirming efficient heat transfer to PCB mount pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 48.5 / 51.0 / 53.6 V - ensures reliable triggering above system operating voltage while accommodating ±5 % tolerance |
| VWM | 43.6 V - maximum continuous reverse voltage before leakage exceeds 1 μA, defining safe operating margin |
| VC @ IPPM | 70.1 V - clamping voltage at 8.6 A surge, limiting downstream IC stress during transients |
| PPPM | 600 W (10/1000 μs) - peak power handling capability for lightning and inductive switching surges |
| TJ max | +185 °C - enables use in high-temperature automotive zones without derating penalties |
| ESD immunity | 30 kV (IEC 61000-4-2 contact/air) - meets stringent automotive EMC requirements for sensor interfaces |
| Package | DFN3820A (3.95 mm × 2.18 mm × 0.88 mm) - low-profile, AOI-compatible footprint with side-wettable flanks |
Pinout & Package
DFN3820A is a 2-terminal, bidirectional package with no polarity marking. Terminals are matte tin-plated and solderable per J-STD-002/JESD 22-B102. The device has no cathode band; both terminals serve identical roles in clamping either polarity of transient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Common connection point for symmetrical clamping; interchangeable with Terminal 2 |
| Terminal 2 | Anode/Cathode (bidirectional) | Identical function to Terminal 1; no internal polarity distinction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive electronics including engine control, ADAS sensors, and body modules |
| Side-wettable flanks | Enables 100 % automated optical inspection (AOI) of solder joints without X-ray |
| Junction passivation | Optimized anisotropic rectifier structure ensures stable VBR and low leakage up to 150 °C |
| Halogen-free & RoHS | M3 suffix confirms compliance with environmental standards and whisker resistance (JESD 201 Class 2) |
| Low profile (0.88 mm) | Reduces board stack height and improves mechanical robustness in vibration-prone automotive mounting |
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 ESD events in vehicle cabins and powertrains. IC Role / Device Role / Timing Role: Bidirectional transient suppressor placed directly at connector or IC input pins to clamp fast-rising surges before they reach sensitive circuitry. Use Value: Maintains signal integrity by limiting clamped voltage to 70.1 V while surviving 600 W pulses - critical for preserving ADC accuracy and interface IC lifetime. | Use Scenario: Safeguarding 48 V or 12 V DC-DC converter inputs against ISO 7637-2 pulse 1/2a/5a transients in start-stop and regenerative braking systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail, absorbing energy from inductive kickback and alternator load dump. Use Value: Withstands 185 °C junction temperature and delivers 8.6 A peak pulse current, ensuring uninterrupted operation during extended high-temp engine cycles. |
| MOSFET Gate Protection | Infotainment Interface Protection |
Use Scenario: Shielding high-side/low-side N-channel MOSFET gates in motor drivers and LED matrix controllers from Miller-induced voltage spikes and ESD. IC Role / Device Role / Timing Role: Low-capacitance (< 100 pF typical at 0 V) shunt device placed between gate and source to clamp dv/dt-induced overshoot without slowing switching. Use Value: 70.1 V clamping voltage prevents gate oxide breakdown while 0.88 mm height avoids interference with adjacent SMT components. | Use Scenario: Hardening USB 2.0, HDMI, or LVDS interfaces in head units and display modules against hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional ESD suppressor integrated into connector-level filtering networks to meet IEC 61000-4-2 Level 4. Use Value: Delivers 30 kV contact/air ESD immunity and maintains < 1 μA leakage at 43.6 V, preventing signal attenuation or bias shift in high-speed data paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ51CA | DO-214AC (SMA) package; higher RθJA (~150 °C/W); 600 W rating same; VC = 82.4 V @ 7.3 A | Larger footprint (4.5 × 2.7 mm); less suitable for dense automotive PCBs; lower thermal efficiency | Select SMAJ51CA only when legacy SMA layout exists or when higher clamping margin is acceptable |
| SMCJ51CA | DO-214AB (SMC) package; 1500 W rating; VC = 84.5 V @ 17.7 A; RθJA ~ 100 °C/W | Substantially larger (7.1 × 6.2 mm); over-specified for most sensor-level protection; better for bulk power rail clamping | Choose SMCJ51CA for primary power rail protection where space permits and higher energy absorption is required |
Compared with SMAJ51CA and SMCJ51CA, the T6N51CAHM3/I offers superior board-area efficiency, lower profile, and tighter thermal resistance in the DFN3820A package - making it optimal for modern automotive ECUs where space, weight, and high-temperature reliability are prioritized over raw power rating.
Availability
T6N51CAHM3/I 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 lifecycles.
Supply support for T6N51CAHM3/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, TVS devices, and optoelectronics with emphasis on reliability and automotive qualification.
The T6N51CAHM3/I belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for high-temperature, high-reliability automotive applications demanding AEC-Q101 compliance and robust transient immunity.
FAQ
What is the breakdown voltage tolerance of the T6N51CAHM3/I?
The T6N51CAHM3/I has a breakdown voltage tolerance of ±5 %, with a nominal VBR of 51.0 V and a specified range of 48.5 V (min) to 53.6 V (max) at 1.0 mA test current. This tight tolerance ensures predictable clamping behavior in precision automotive circuits where overvoltage margins must be tightly controlled.
Is the T6N51CAHM3/I suitable for automotive applications?
Yes, the T6N51CAHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and whisker-resistant construction. Its 185 °C maximum junction temperature, 30 kV ESD immunity, and DFN3820A package with side-wettable flanks make it fully compliant for use in automotive powertrain, chassis, and infotainment systems.
What is the clamping voltage of the T6N51CAHM3/I at its rated peak pulse current?
The T6N51CAHM3/I exhibits a maximum clamping voltage (VC) of 70.1 V at its rated peak pulse current (IPPM) of 8.6 A under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is critical for ensuring downstream ICs remain within absolute maximum ratings.
Does the T6N51CAHM3/I have polarity markings on the package?
No, the T6N51CAHM3/I is a bidirectional TVS diode housed in a DFN3820A package with no cathode band or polarity marking. Both terminals are functionally identical, allowing flexible placement on PCBs without orientation constraints - simplifying automated assembly and reducing layout complexity for differential or AC-coupled signal lines.
What is the thermal resistance specification for the T6N51CAHM3/I?
The T6N51CAHM3/I has a maximum junction-to-ambient thermal resistance (RθJA) of 175 °C/W and a maximum junction-to-mount thermal resistance (RθJM) of 6.5 °C/W, measured per JEDEC standards on FR4 PCB with standard 2 oz copper footprint. These values confirm effective heat dissipation in compact automotive modules where airflow is limited.
T6N51CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- 2-VDFN
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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
T6N51CAHM3/I FAQ
1.How can I place an order for T6N51CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for T6N51CAHM3/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 T6N51CAHM3/I reliable?
The price and inventory of T6N51CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T6N51CAHM3/I is usually 5 days.
3.What payment methods are accepted for T6N51CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T6N51CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T6N51CAHM3/I?
T6N51CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T6N51CAHM3/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 T6N51CAHM3/I?
For technical support, including T6N51CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T6N51CAHM3/I requirements.
6.How does Aetrix verify that T6N51CAHM3/I is sourced from the original manufacturer or authorized distributors?
All T6N51CAHM3/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 T6N51CAHM3/I meets industry standards.
7.What is the process for return or replacement of T6N51CAHM3/I?
All T6N51CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with T6N51CAHM3/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 T6N51CAHM3/I part is unused and in its original packaging.
Return procedure for T6N51CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T6N51CAHM3/I Tags
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