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Vishay T6N20CAHM3/H
- Part No.:
- T6N20CAHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
T6N20CAHM3/H.pdf
- Description:
- 600W,20V 5%, DFN3820A BIDIR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,086
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Product details
Overview
T6N20CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount PAR® Transient Voltage Suppressor in DFN3820A package, with 19.0 V to 21.0 V breakdown voltage (VBR), 17.1 V stand-off voltage (VWM), and 600 W peak pulse power (10/1000 μs), designed for automotive-grade ESD and surge protection of sensor signal lines and MOSFET gates.
For engineers reviewing the T6N20CAHM3/H datasheet, T6N20CAHM3/H pinout, T6N20CAHM3/H application, or T6N20CAHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal derating behavior, clamping performance at 21.7 A IPPM, and DFN3820A package mechanical compatibility with SMP footprint.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for junction stability up to TJ = 185 °C, enabling operation in under-hood automotive environments. Its bidirectional configuration provides symmetrical clamping for AC-coupled or differential signal lines without polarity constraints.
The DFN3820A package features side-wettable flanks for automated optical inspection and supports JEDEC-compliant reflow profiles up to 260 °C peak. Thermal resistance is characterized as RθJA = 140–175 °C/W and RθJM = 5–6.5 °C/W per JEDEC 51-2A and 51-14 test methods.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V - ensures reliable triggering above 17.1 V operating voltage while avoiding false trips during transients |
| VWM | 17.1 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA at 25 °C |
| IPPM (10/1000 μs) | 21.7 A - peak surge current capability defining clamping voltage limit of 27.7 V |
| VC @ IPPM | 27.7 V - maximum clamped voltage seen by protected circuit during full-rated surge event |
| TJ max | +185 °C - enables use in high-temperature automotive zones without derating loss |
| ESD immunity | ±30 kV contact/air (IEC 61000-4-2) - meets stringent automotive EMC requirements |
| Package | DFN3820A - 3.95 mm × 2.18 mm × 0.88 mm low-profile leadless package with side-wettable flanks |
Pinout & Package
DFN3820A is a 2-terminal bidirectional device with no polarity marking; terminals are symmetric and interchangeable. The package has no cathode band and supports automated placement with AOI-compatible side-wettable flanks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no functional distinction |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; device operates identically regardless of orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| MSL Level 1 | Unlimited floor life and compatibility with standard SMT reflow up to 260 °C peak |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates without compromising thermal or electrical performance |
| Junction passivation | Enables stable 185 °C operation and long-term reliability under thermal cycling stress |
| SMP footprint compatibility | Drop-in replacement for DO-220AA packages without PCB redesign |
Applications
| Automotive Sensor Protection | Power MOSFET Gate Clamp |
|---|---|
Use Scenario: Protecting LIN/CAN bus sensor nodes (e.g., temperature, pressure, position) from load-dump and inductive switching transients in vehicle chassis modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp ±27.7 V surges within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in downstream ASICs and microcontrollers by limiting transient voltage below 27.7 V at 21.7 A. | Use Scenario: Clamping gate-source voltage spikes on N-channel power MOSFETs driving solenoids or relays in transmission control units. IC Role / Device Role / Timing Role: Fast-response shunt device connected between MOSFET gate and source to suppress >100 V ringing events. Use Value: Maintains gate integrity by clamping transients to ≤27.7 V, preventing unintended turn-on and ensuring robust switching under high dV/dt conditions. |
| Infotainment Interface Lines | ADAS Camera Power Rail |
Use Scenario: Safeguarding USB 2.0, LVDS, or FPD-Link III data lines connecting head unit to display or rear-view camera. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) bidirectional clamp placed inline with signal traces to absorb ESD and crosstalk-induced spikes. Use Value: Preserves signal integrity with <0.88 mm height and minimal parasitic capacitance while meeting ISO 10605 30 kV ESD requirements. | Use Scenario: Protecting 5 V or 12 V power rails feeding CMOS image sensors and serializer ICs in forward-facing radar/camera fusion modules. IC Role / Device Role / Timing Role: Standoff-rated TVS placed at power entry point to suppress load dump and battery reversal transients. Use Value: Ensures uninterrupted imaging function by sustaining 17.1 V nominal operation and clamping 600 W surges without degradation over 15+ year automotive lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20CA | DO-214AC package, higher RθJA (~190 °C/W), lower IPPM (19.4 A), same VBR/VC range | Less suitable for space-constrained automotive PCBs due to larger footprint and height | Select SMAJ20CA only when legacy through-hole or larger SMD layout exists and thermal margin allows |
| SMCJ20CA | DO-214AB package, 1500 W rating, higher VC (32.4 V), same VBR, larger size | Better for high-energy industrial surges but over-specified for automotive signal-line protection | Choose SMCJ20CA if system-level surge testing requires >600 W margin and board area permits larger case |
Compared with SMAJ20CA and SMCJ20CA, T6N20CAHM3/H delivers superior volumetric efficiency, AEC-Q101 qualification out-of-box, and tighter thermal resistance for compact automotive modules-making it the preferred choice where space, qualification, and thermal management are co-constrained.
Availability
T6N20CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, power MOSFET gate clamping, and infotainment interface line safeguarding requiring stable component supply across production lifecycles.
Supply support for T6N20CAHM3/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 automotive, industrial, and computing applications.
The T6N20CAHM3/H belongs to Vishay's PAR® family of surface-mount TVS diodes engineered specifically for high-reliability automotive electronics needing AEC-Q101 qualification, 185 °C junction operation, and robust ESD/surge immunity.
FAQ
What is the breakdown voltage tolerance of T6N20CAHM3/H?
The T6N20CAHM3/H has a ±5 % breakdown voltage tolerance, specified as 19.0 V (min), 20.0 V (nominal), and 21.0 V (max) at 1.0 mA test current. This tight tolerance ensures consistent clamping behavior across production lots and supports precise circuit margining in automotive designs where overvoltage thresholds must be tightly controlled.
Is T6N20CAHM3/H compatible with standard SMT reflow profiles?
Yes, T6N20CAHM3/H meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its DFN3820A package is qualified for standard lead-free reflow processes without preconditioning, and its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102 solderability standards.
Does T6N20CAHM3/H require a heatsink for 600 W surge handling?
No, T6N20CAHM3/H does not require an external heatsink for single-event 600 W (10/1000 μs) surges. Its thermal design relies on transient junction-to-mount conduction (RθJM = 5–6.5 °C/W) into the PCB copper, and the 185 °C maximum junction temperature accounts for short-duration pulse heating without sustained power dissipation.
How does T6N20CAHM3/H compare to unidirectional TVS diodes in sensor protection?
T6N20CAHM3/H provides symmetrical clamping for both positive and negative transients, making it ideal for AC-coupled or floating signal lines like LIN bus or differential sensor outputs. Unidirectional variants would require careful polarity alignment and fail to protect against reverse-polarity surges, whereas T6N20CAHM3/H eliminates orientation dependency and simplifies layout in bidirectional interfaces.
What is the junction capacitance of T6N20CAHM3/H at 0 V bias?
The junction capacitance of T6N20CAHM3/H is not explicitly listed in the datasheet at 0 V bias; however, typical capacitance measured at VWM = 17.1 V is <100 pF (per Fig. 4). For high-speed data lines, this value remains low enough to avoid signal integrity degradation while maintaining effective transient suppression.
T6N20CAHM3/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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- 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
T6N20CAHM3/H FAQ
1.How can I place an order for T6N20CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T6N20CAHM3/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 T6N20CAHM3/H reliable?
The price and inventory of T6N20CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T6N20CAHM3/H is usually 5 days.
3.What payment methods are accepted for T6N20CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T6N20CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T6N20CAHM3/H?
T6N20CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T6N20CAHM3/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 T6N20CAHM3/H?
For technical support, including T6N20CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T6N20CAHM3/H requirements.
6.How does Aetrix verify that T6N20CAHM3/H is sourced from the original manufacturer or authorized distributors?
All T6N20CAHM3/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 T6N20CAHM3/H meets industry standards.
7.What is the process for return or replacement of T6N20CAHM3/H?
All T6N20CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T6N20CAHM3/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 T6N20CAHM3/H part is unused and in its original packaging.
Return procedure for T6N20CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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