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Vishay T6N51CAHM3/H
- Part No.:
- T6N51CAHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
T6N51CAHM3/H.pdf
- Description:
- 600W,51V 5%, DFN3820A BIDIR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,491
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Product details
Overview
T6N51CAHM3/H 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, and 600 W peak pulse power (10/1000 μs). It delivers 8.6 A peak pulse current and clamps to 70.1 V at rated surge, supporting automotive-grade protection of sensor signal lines and MOSFET gates.
For engineers reviewing the T6N51CAHM3/H datasheet, T6N51CAHM3/H pinout, T6N51CAHM3/H application, or T6N51CAHM3/H equivalent, this page provides verified electrical specs, AEC-Q101 qualification status, thermal resistance values (RθJA = 140–175 °C/W), junction capacitance behavior, and ESD immunity per IEC 61000-4-2 (30 kV contact/air).
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-reliability automotive environments, operating up to TJ = 185 °C. Its bidirectional configuration enables symmetric clamping on AC-coupled or differential signal paths without polarity constraints.
The DFN3820A package features side-wettable flanks for automated optical inspection and supports reflow soldering at 260 °C peak (MSL Level 1). Thermal performance is characterized by RθJM = 5–6.5 °C/W, enabling effective heat transfer to PCB copper pads under transient surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 48.5–53.6 V (min–max at 1 mA); defines precise clamping onset threshold for overvoltage events |
| Stand-off Voltage VWM | 43.6 V; maximum continuous reverse voltage before leakage exceeds 1 μA - sets safe operating margin below VBR |
| Peak Pulse Power PPPM | 600 W (10/1000 μs); determines energy-handling capability for lightning and inductive-switching transients |
| Clamping Voltage VC | 70.1 V at 8.6 A IPPM; actual voltage seen by protected circuit during worst-case surge |
| Junction Temperature Range | −65 °C to +185 °C; enables deployment in under-hood automotive ECUs and industrial motor drives |
| ESD Immunity | 30 kV contact & air discharge (IEC 61000-4-2); qualifies for robust electrostatic protection in assembly and field use |
| Package | DFN3820A (3.95 mm × 2.18 mm × 0.88 mm); low-profile, leadless, AOI-compatible footprint with side-wettable flanks |
Pinout & Package
DFN3820A package: 2-terminal, bidirectional device with no cathode marking. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102. Polarity-insensitive layout simplifies PCB routing and eliminates orientation errors during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity - no fixed polarity assignment |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; symmetrical conduction enables AC line or differential pair protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - supports PPAP and functional safety-aware designs |
| 185 °C junction rating | Enables operation in high-temperature zones (e.g., engine control modules) without derating or thermal shutdown |
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joints - critical for zero-defect manufacturing in Tier-1 automotive supply chains |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates (JESD201 Class 2 whisker resistance, UL 94 V-0 molding compound) |
| Low-profile height (0.88 mm) | Reduces board stack height in space-constrained modules such as ADAS camera ECUs and battery management sensors |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal line and ground, absorbing transients before they reach sensitive input stages. Use Value: Prevents latch-up or permanent damage to microcontrollers and ADC front-ends while maintaining signal integrity up to 1 MHz bandwidth. |
Use Scenario: Safeguarding digital I/O and encoder feedback lines in variable-frequency drives exposed to switching noise and ground bounce. IC Role / Device Role / Timing Role: Fast-response transient suppressor mounted directly at connector entry points to shunt induced surges to chassis ground. Use Value: Maintains functional safety integrity (IEC 61800-5-2) by limiting voltage excursions to <70.1 V during 600 W surges, avoiding false triggering or data corruption. |
| Power Supply Rail Clamping | USB/Communication Port ESD Protection |
|
Use Scenario: Secondary overvoltage protection on 48 V auxiliary rails in commercial vehicles, supplementing primary DC-DC converter protection. IC Role / Device Role / Timing Role: Standby-mode TVS that activates only during abnormal events (e.g., alternator regulation failure), minimizing leakage impact on efficiency. Use Value: With 1 μA max leakage at 43.6 V, it avoids unnecessary quiescent current draw while delivering 600 W surge handling at full rail voltage. |
Use Scenario: Board-level ESD hardening for USB 2.0, RS-485, or LIN interfaces in infotainment and telematics modules. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical at 0 V) bidirectional clamp placed between data line and ground to suppress IEC 61000-4-2 discharges. Use Value: Meets 30 kV contact/air ESD immunity without distorting signal edges - validated for >100 million insertion cycles in production units. |
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, 1.9 mm height, higher RθJA (~190 °C/W), same VBR/VC specs | Manual or semi-automated assembly; unsuitable for AOI or ultra-thin modules | Select when legacy through-hole or larger footprint is acceptable and thermal budget allows higher junction rise |
| TPSMD51CA | DO-214AB (SMC) package, 2.3 mm height, 1500 W PPPM rating, higher clamping (77 V), AEC-Q101 qualified | Higher-energy surge environments (e.g., alternator load dump), less space-constrained layouts | Choose when system-level testing requires >600 W surge margin and board area permits larger 7.11 mm × 6.22 mm footprint |
Compared with SMAJ51CA and TPSMD51CA, the T6N51CAHM3/H offers superior board-area efficiency (3.95 mm × 2.18 mm), AOI compatibility, and lower thermal resistance to mount (RθJM = 5–6.5 °C/W), making it optimal for next-generation automotive modules where size, manufacturability, and thermal performance are co-constrained.
Availability
T6N51CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive I/O, and USB/communication port ESD protection requiring stable component supply across multi-year production programs.
Supply support for T6N51CAHM3/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 reliability, automotive qualification, and power efficiency.
The T6N51CAHM3/H belongs to Vishay's PAR® (Protected Anisotropic Rectifier) TVS family, engineered specifically for high-temperature, high-reliability automotive and industrial transient suppression with AEC-Q101 validation and side-wettable DFN packaging.
FAQ
What is the breakdown voltage tolerance of the T6N51CAHM3/H?
The T6N51CAHM3/H has a ±5 % breakdown voltage tolerance, specified as 48.5 V (min) to 53.6 V (max) at 1 mA test current. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage threshold design in automotive ECUs where margin control is critical.
Is the T6N51CAHM3/H suitable for automotive applications?
Yes, the T6N51CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and whisker-resistant construction. Its 185 °C maximum junction temperature and MSL Level 1 rating make it suitable for under-hood and body-control module applications per automotive OEM requirements.
What does the "HM3" suffix mean in T6N51CAHM3/H?
The "HM3" suffix in T6N51CAHM3/H denotes AEC-Q101 qualification, halogen-free material composition, RoHS compliance, and JESD201 Class 2 whisker resistance. The "/H" indicates tape-and-reel packaging in 7-inch reels (3500 units), while "/I" would indicate 13-inch reels (14,000 units).
How does the DFN3820A package of the T6N51CAHM3/H support automated optical inspection?
The DFN3820A package of the T6N51CAHM3/H features side-wettable flanks - exposed metal on the package edges - allowing AOI systems to verify solder joint quality after reflow. This eliminates manual visual inspection and supports zero-defect goals in high-volume automotive PCB assembly lines.
What is the maximum clamping voltage of the T6N51CAHM3/H at its rated peak pulse current?
The T6N51CAHM3/H clamps to a maximum of 70.1 V at its rated peak pulse current of 8.6 A (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.
T6N51CAHM3/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:
- -
- 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/H FAQ
1.How can I place an order for T6N51CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T6N51CAHM3/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 T6N51CAHM3/H reliable?
The price and inventory of T6N51CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T6N51CAHM3/H is usually 5 days.
3.What payment methods are accepted for T6N51CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T6N51CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T6N51CAHM3/H?
T6N51CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T6N51CAHM3/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 T6N51CAHM3/H?
For technical support, including T6N51CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T6N51CAHM3/H requirements.
6.How does Aetrix verify that T6N51CAHM3/H is sourced from the original manufacturer or authorized distributors?
All T6N51CAHM3/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 T6N51CAHM3/H meets industry standards.
7.What is the process for return or replacement of T6N51CAHM3/H?
All T6N51CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T6N51CAHM3/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 T6N51CAHM3/H part is unused and in its original packaging.
Return procedure for T6N51CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T6N51CAHM3/H Tags
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