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Vishay General Semiconductor - Diodes Division TA6F9.1AHM3/6A
- Part No.:
- TA6F9.1AHM3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F9.1AHM3/6A.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,037
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Product details
Overview
TA6F9.1AHM3/6A from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SlimSMA (DO-221AC) package, featuring 9.1 V breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 44.8 V clamping voltage at 13.4 A peak pulse current, and 600 W peak pulse power (10/1000 μs). It delivers automotive-grade protection for sensor signal lines and MOSFET gate drivers under inductive switching transients.
For engineers reviewing the TA6F9.1AHM3/6A datasheet, TA6F9.1AHM3/6A pinout, TA6F9.1AHM3/6A application, or TA6F9.1AHM3/6A equivalent, this device is selected for high-reliability automotive electronics requiring AEC-Q101 qualification, 185 °C junction temperature capability, low-profile mounting (0.95 mm height), and IEC 61000-4-2 ±30 kV ESD immunity.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping performance across -65 °C to +185 °C operating range. Its unidirectional architecture enables precise reverse-biased transient suppression without forward conduction during normal operation.
The SlimSMA (DO-221AC) package provides optimized thermal resistance (RθJA = 120–150 °C/W) and meets JESD201 Class 2 whisker resistance with matte tin-plated terminals. It supports automated placement and complies with MSL Level 1 (260 °C reflow peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 8.65 / 9.10 / 9.55 V at 1.0 mA - defines precise voltage threshold where clamping initiates under transient stress |
| VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 25 μA at 25 °C |
| VC @ IPPM | 44.8 V at 13.4 A - clamped voltage seen by protected circuit during 10/1000 μs surge, limiting downstream stress |
| PPPM | 600 W (10/1000 μs) - peak transient energy absorption capacity without failure |
| TJ max | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| ESD Rating | ±30 kV per IEC 61000-4-2 (contact/air) - protects against human-body-model and system-level electrostatic discharge events |
| AEC-Q101 | Qualified - validated for automotive electronic modules including engine control, ADAS sensors, and body electronics |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, 2-terminal unidirectional configuration. Overall dimensions: 4.15 × 2.50 × 0.95 mm (L × W × H); cathode indicated by color band on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during clamping | Connected to protected line (e.g., sensor output or MOSFET source); conducts surge current to ground path when VBR exceeded |
| Cathode | Current exit terminal during clamping | Connected to system ground or low-impedance return; polarity marking ensures correct PCB orientation per DO-221AC standard |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile height | 0.95 mm typical - enables use in space-constrained automotive ECUs and compact sensor housings without mechanical interference |
| Junction passivation | Optimized anisotropic rectifier design - ensures stable VBR drift <0.06 %/°C and long-term reliability under thermal cycling |
| Automated placement compatibility | Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 - supports high-yield SMT assembly with standard reflow profiles |
| Halogen-free & RoHS | HM3 suffix indicates halogen-free molding compound and full RoHS compliance - meets automotive environmental requirements |
| Whisker resistance | JESD201 Class 2 qualified - prevents tin whisker growth under humidity and temperature stress, critical for long-life automotive modules |
Applications
| Automotive Sensor Protection | MOSFET Gate Driver Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine bay modules exposed to load dump and inductive kick. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller ADC input to clamp transients before they reach sensitive front-end circuitry. Use Value: Limits clamped voltage to 44.8 V at 13.4 A, preventing latch-up or damage to 5 V or 3.3 V ADC inputs while maintaining signal integrity below VWM = 7.78 V. |
Use Scenario: Safeguarding gate-source terminals of N-channel power MOSFETs driving solenoids, fuel injectors, or relays in 12 V automotive systems. IC Role / Device Role / Timing Role: TVS connected directly across MOSFET gate and source to absorb fast-rising turn-off spikes induced by parasitic inductance. Use Value: Sub-1 ns response time and 44.8 V clamping prevent gate oxide breakdown (<20 V rating typical) and ensure reliable switching under repetitive inductive switching. |
| Infotainment Interface Lines | Body Control Module (BCM) Signal Inputs |
|
Use Scenario: Shielding LIN bus or analog audio lines in head units and display modules from ESD events and board-level coupling noise. IC Role / Device Role / Timing Role: Discrete TVS placed at connector entry point to shunt ESD current away from transceiver ICs and op-amps. Use Value: ±30 kV IEC 61000-4-2 contact discharge rating ensures robustness against user-handling ESD, while low capacitance preserves signal rise/fall times. |
Use Scenario: Protecting digital input pins (e.g., door lock switch, window up/down signals) in BCMs subjected to cable harness transients and jump-start surges. IC Role / Device Role / Timing Role: TVS installed on each discrete input line before pull-up/pull-down resistors and microcontroller GPIOs. Use Value: 7.78 V VWM allows compatibility with 5 V logic thresholds; 600 W PPPM handles sustained 12 V battery dump events without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | 9.0 V VBR (min 8.55 V), 14.5 V VC @ 38.5 A, same SlimSMA package, but lower TJ max (150 °C) | Lacks AEC-Q101 qualification and 185 °C rating; not approved for under-hood automotive use | Select SMAJ9.0A only for cost-sensitive industrial or consumer applications where extended temperature range is not required. |
| SMCJ9.0A | Same VBR range, higher PPPM (1500 W), larger DO-214AB package (7.11 × 6.22 mm), RθJA ≈ 25 °C/W | Higher power handling but 7× larger footprint; incompatible with space-constrained SlimSMA layouts | Choose SMCJ9.0A only when surge currents exceed 13.4 A and PCB area permits larger package; not drop-in compatible. |
Compared with SMAJ9.0A and SMCJ9.0A, TA6F9.1AHM3/6A uniquely combines AEC-Q101 qualification, 185 °C operation, and ultra-low profile (0.95 mm) in SlimSMA - making it the only viable option for next-generation automotive sensor nodes where thermal margin, size, and qualification are jointly constrained.
Availability
TA6F9.1AHM3/6A is available at Aetrix Electronics and suitable for automotive sensor protection, MOSFET gate driver safeguarding, and body control module signal line hardening requiring stable component supply across production lifecycles.
Supply support for TA6F9.1AHM3/6A 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 TA6F series belongs to Vishay's PAR® family of high-temperature TVS diodes, engineered specifically for automotive electronics demanding AEC-Q101 compliance, 185 °C operation, and ultra-thin packaging.
FAQ
What is the exact breakdown voltage tolerance for TA6F9.1AHM3/6A?
The TA6F9.1AHM3/6A has a guaranteed breakdown voltage range of 8.65 V (min) to 9.55 V (max) at 1.0 mA test current, with 9.10 V nominal. This ±5% tolerance ensures consistent clamping initiation across production lots and temperature extremes up to 150 °C, as confirmed in the Vishay datasheet revision 16-Jan-2025.
Is TA6F9.1AHM3/6A qualified for automotive under-hood applications?
Yes, TA6F9.1AHM3/6A is AEC-Q101 qualified and rated for TJ = -65 °C to +185 °C, making it suitable for under-hood automotive applications such as engine control units and transmission control modules. Its SlimSMA package and passivated anisotropic rectifier structure ensure reliability under thermal cycling and vibration stress.
What is the clamping voltage of TA6F9.1AHM3/6A at its rated peak pulse current?
The TA6F9.1AHM3/6A clamps to 44.8 V at its specified peak pulse current of 13.4 A (10/1000 μs waveform), as measured per Figure 5 in the Vishay datasheet. This value defines the maximum voltage imposed on protected circuitry during standardized surge events and is critical for ensuring downstream IC survival.
Does TA6F9.1AHM3/6A meet RoHS and halogen-free requirements?
Yes, TA6F9.1AHM3/6A carries the HM3 suffix, indicating halogen-free molding compound and full RoHS compliance per EU Directive 2011/65/EU. The device also passes JESD201 Class 2 whisker testing and meets UL 94 V-0 flammability rating, satisfying Tier 1 automotive material specifications.
What is the thermal resistance of TA6F9.1AHM3/6A on a standard FR4 PCB?
TA6F9.1AHM3/6A exhibits a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on an FR4 PCB with the minimum recommended pad layout per JEDEC 51-2A. This value increases to 150 °C/W maximum and must be factored into power derating calculations above 25 °C ambient.
TA6F9.1AHM3/6A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-221AC, SMA Flat Leads
- Series:
- *
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 44.8A
- 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
- Supplier Device Package:
- DO-221AC (SlimSMA)
TA6F9.1AHM3/6A FAQ
1.How can I place an order for TA6F9.1AHM3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F9.1AHM3/6A 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 TA6F9.1AHM3/6A reliable?
The price and inventory of TA6F9.1AHM3/6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F9.1AHM3/6A is usually 5 days.
3.What payment methods are accepted for TA6F9.1AHM3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F9.1AHM3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F9.1AHM3/6A?
TA6F9.1AHM3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F9.1AHM3/6A 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 TA6F9.1AHM3/6A?
For technical support, including TA6F9.1AHM3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F9.1AHM3/6A requirements.
6.How does Aetrix verify that TA6F9.1AHM3/6A is sourced from the original manufacturer or authorized distributors?
All TA6F9.1AHM3/6A 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 TA6F9.1AHM3/6A meets industry standards.
7.What is the process for return or replacement of TA6F9.1AHM3/6A?
All TA6F9.1AHM3/6A units undergo pre-shipment inspection (PSI). If there is an issue with TA6F9.1AHM3/6A, 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 TA6F9.1AHM3/6A part is unused and in its original packaging.
Return procedure for TA6F9.1AHM3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F9.1AHM3/6A Tags
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