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Vishay T6N91CAHM3/I
- Part No.:
- T6N91CAHM3/I
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
T6N91CAHM3/I.pdf
- Description:
- 600W,91V 5%, DFN3820A BIDIR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:14,000
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Product details
Overview
T6N91CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount PAR® Transient Voltage Suppressor in DFN3820A package, with 91 V nominal breakdown voltage (±5 %), 77.8 V stand-off voltage, 125 V maximum clamping voltage at 4.8 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 signal line protection.
For engineers reviewing the T6N91CAHM3/I datasheet, T6N91CAHM3/I pinout, T6N91CAHM3/I application, or T6N91CAHM3/I equivalent, key selection criteria include bidirectional clamping performance under 10/1000 μs surge, thermal robustness up to 185 °C junction temperature, AEC-Q101 qualification status, DFN3820A side-wettable flanks for AOI compatibility, and 77.8 V stand-off voltage margin relative to 12 V/24 V automotive rails.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low-leakage operation. Its bidirectional configuration enables symmetrical clamping on both polarities without polarity marking, and its DFN3820A footprint supports automated placement while meeting MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
The device delivers 125 V clamping voltage at 4.8 A IPPM under 10/1000 μs waveform, with 1.0 μA max reverse leakage at VWM and 6.0 μA at TJ = 150 °C. Thermal resistance is specified as RθJA ≤ 175 °C/W and RθJM ≤ 6.5 °C/W, enabling reliable operation in high-density automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 91 V ±5 % - defines precise voltage threshold where avalanche conduction begins under 1 mA test current |
| VWM | 77.8 V - maximum continuous working voltage before significant leakage; provides 15 % margin above 67 V transients in 24 V automotive systems |
| VC @ IPPM | 125 V at 4.8 A - clamping voltage during 10/1000 μs surge; limits downstream IC stress to safe levels |
| PPPM | 600 W (10/1000 μs) - peak transient energy handling capacity per standardized surge waveform |
| TJ max | +185 °C - enables operation in under-hood environments and supports AEC-Q101 automotive qualification |
| Package | DFN3820A - 3.95 mm × 2.18 mm × 0.88 mm low-profile leadless package with side-wettable flanks for AOI |
| ESD Rating | ±30 kV (IEC 61000-4-2 contact/air) - protects against human-body-model and system-level electrostatic events |
Pinout & Package
DFN3820A is a 2-terminal, bidirectional surface-mount package with no cathode band. Terminals are matte tin-plated for solderability per J-STD-002 and JESD22-B102. The package features side-wettable flanks to support automated optical inspection (AOI) of solder joints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no polarity marking required |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically symmetric with Terminal 1; forms single-channel bidirectional clamping path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| Side-wettable flanks | Supports automated optical inspection of solder fillets on DFN3820A terminals, improving manufacturing yield |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, ADAS sensors, and body electronics |
| Junction temperature rating | 185 °C maximum operating temperature allows use in high-ambient under-hood locations |
| Low-profile height | 0.88 mm typical height enables integration in space-constrained modules such as radar front-ends and camera ECUs |
Applications
| Automotive Sensor Signal Protection | Infotainment Display Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver I/O pins and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector or IC input to clamp surges before they reach sensitive circuitry. Use Value: 125 V clamping at 4.8 A ensures downstream 5 V/3.3 V logic remains below absolute maximum ratings during ISO 7637-2 Pulse 1/2a/5a events. | Use Scenario: Safeguarding MIPI DSI/CSI differential pairs and touch controller I²C lines in automotive infotainment head units exposed to ESD and board-level transients. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to connectors or IC pads to suppress fast transients without degrading signal integrity. Use Value: DFN3820A footprint minimizes parasitic inductance, preserving rise time of high-speed signals while delivering 30 kV IEC 61000-4-2 ESD immunity. |
| ADAS Camera Power Rail | Body Control Module (BCM) Inputs |
Use Scenario: Clamping induced transients on 12 V bias rails feeding CMOS image sensors and ISP processors in surround-view camera modules. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between power rail and ground to absorb load-dump energy without crowbarring. Use Value: 77.8 V VWM provides sufficient margin above nominal 12 V supply while allowing full 600 W surge absorption capability. | Use Scenario: Protecting discrete inputs (e.g., door lock switches, trunk release) in BCMs from inductive kickback and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage protection element placed at harness entry point before internal level-shifting or conditioning circuitry. Use Value: AEC-Q101 qualification and 185 °C TJ rating ensure long-term reliability across temperature cycling and humidity exposure in cabin environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90CA | DO-214AC package (SMA), 90 V VBR, 73.7 V VWM, 129 V VC @ 4.7 A, 400 W PPPM | Larger footprint, higher thermal resistance (RθJA ≈ 50 °C/W), not AEC-Q101 qualified | Use where board space permits larger package and automotive qualification is not required |
| SMCJ90CA | DO-214AB package (SMC), 90 V VBR, 73.7 V VWM, 129 V VC @ 11.2 A, 1500 W PPPM | Higher power rating but 7.8 mm × 6.2 mm footprint; lacks side-wettable flanks and AOI support | Select when higher surge current handling is needed and automated optical inspection is not mandated |
Compared with SMAJ90CA and SMCJ90CA, T6N91CAHM3/I offers superior board-level integration via DFN3820A's compact size and AOI-compatible terminals, while maintaining AEC-Q101 compliance and 185 °C operation-critical for next-generation automotive electronics where miniaturization and process traceability are mandatory.
Availability
T6N91CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, ADAS camera power rail clamping, and body control module input safeguarding requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for T6N91CAHM3/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, MOSFETs, and protection devices with emphasis on high-reliability and automotive-grade performance.
The T6N91CAHM3/I belongs to Vishay's PAR® TVS family, engineered specifically for high-temperature, high-reliability transient suppression in automotive electronics-including powertrain, chassis, and ADAS subsystems-where AEC-Q101 qualification and 185 °C operation are essential.
FAQ
What is the breakdown voltage tolerance for T6N91CAHM3/I?
The T6N91CAHM3/I has a nominal breakdown voltage of 91 V with a tolerance of ±5 %, meaning the actual VBR measured at 1 mA test current falls between 86.5 V and 95.5 V. This tight tolerance ensures consistent clamping behavior across production lots and supports precise system-level surge margining in automotive designs.
Is T6N91CAHM3/I suitable for 24 V automotive systems?
Yes, T6N91CAHM3/I is suitable for 24 V automotive systems. Its 77.8 V stand-off voltage (VWM) provides adequate margin above typical 24 V rail transients, and its 125 V clamping voltage at 4.8 A ensures protected ICs remain within safe operating limits during ISO 7637-2 Pulse 5a load-dump events. The AEC-Q101 qualification further validates its suitability.
Does T6N91CAHM3/I require a heatsink for standard operation?
No, T6N91CAHM3/I does not require an external heatsink for standard transient suppression operation. Its DFN3820A package delivers RθJM ≤ 6.5 °C/W to the PCB mount pad, and typical surge events are non-repetitive. Continuous power dissipation is negligible due to low leakage (<1 μA at VWM), making thermal management via standard FR4 copper pour sufficient.
What does the "HM3" suffix indicate in T6N91CAHM3/I?
The "HM3" suffix in T6N91CAHM3/I indicates AEC-Q101 qualification (H), halogen-free and RoHS-compliant materials (M), and compliance with JESD201 Class 2 whisker resistance (3). The "I" denotes 13-inch tape-and-reel packaging with 14,000 units per reel-optimized for high-volume SMT assembly lines.
Can T6N91CAHM3/I replace older SMA or SMC package TVS diodes in existing designs?
T6N91CAHM3/I is not a direct pin-to-pin replacement for SMA or SMC package TVS diodes due to its DFN3820A footprint and 2-terminal bidirectional layout. While electrical parameters are comparable to SMAJ90CA/SMCJ90CA, PCB redesign is required to accommodate the 3.95 mm × 2.18 mm land pattern and side-wettable flanks-offering improved AOI capability and thermal performance in new automotive platforms.
T6N91CAHM3/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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 4.8A
- 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
T6N91CAHM3/I FAQ
1.How can I place an order for T6N91CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for T6N91CAHM3/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 T6N91CAHM3/I reliable?
The price and inventory of T6N91CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T6N91CAHM3/I is usually 5 days.
3.What payment methods are accepted for T6N91CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T6N91CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T6N91CAHM3/I?
T6N91CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T6N91CAHM3/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 T6N91CAHM3/I?
For technical support, including T6N91CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T6N91CAHM3/I requirements.
6.How does Aetrix verify that T6N91CAHM3/I is sourced from the original manufacturer or authorized distributors?
All T6N91CAHM3/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 T6N91CAHM3/I meets industry standards.
7.What is the process for return or replacement of T6N91CAHM3/I?
All T6N91CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with T6N91CAHM3/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 T6N91CAHM3/I part is unused and in its original packaging.
Return procedure for T6N91CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T6N91CAHM3/I Tags
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onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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