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Vishay General Semiconductor - Diodes Division TA6F9.1AHM3_A/H
- Part No.:
- TA6F9.1AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F9.1AHM3_A/H.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,352
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Product details
Overview
TA6F9.1AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SlimSMA (DO-221AC) package, designed for automotive-grade overvoltage protection of signal lines and power rails. It features 9.1 V nominal breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 44.8 V clamping voltage at 13.4 A peak pulse current, 600 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for under-hood electronics.
For engineers reviewing the TA6F9.1AHM3_A/H datasheet, TA6F9.1AHM3_A/H pinout, TA6F9.1AHM3_A/H application, or TA6F9.1AHM3_A/H equivalent, this device is selected for high-reliability automotive sensor interface protection where low-profile mounting, 185 °C junction capability, and IEC 61000-4-2 ±30 kV ESD immunity are required.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping performance across -65 °C to +185 °C operating junction temperature. Its unidirectional configuration enables precise reverse-biased transient suppression on DC-biased lines without forward conduction during normal operation.
The SlimSMA (DO-221AC) package provides 0.95 mm typical height and meets MSL Level 1 with 260 °C lead-free reflow compatibility. Thermal resistance is rated at RθJA = 120–150 °C/W (FR4 board, minimum pad layout) and RθJM = 12–15 °C/W (junction-to-mount).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 8.65 / 9.10 / 9.55 V at 1.0 mA - ensures reliable turn-on before downstream IC damage threshold |
| VWM | 7.78 V - maximum continuous working voltage without leakage degradation |
| VC @ IPPM | 44.8 V at 13.4 A (10/1000 µs) - defines worst-case voltage seen by protected circuit during surge |
| PPPM | 600 W - peak transient energy absorption capacity under standardized surge waveform |
| TJ max | +185 °C - supports placement near high-temperature engine control units and power modules |
| ESD Rating | ±30 kV per IEC 61000-4-2 (contact/air) - eliminates need for external ESD diodes in sensor interfaces |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and UHAST |
Pinout & Package
SlimSMA (DO-221AC) surface-mount package with 0.95 mm typical height, matte tin-plated terminals solderable per J-STD-002/JESD22-B102, and cathode indicated by color band. Meets UL 94 V-0 flammability rating and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; carries full surge current during clamping |
| Cathode | High-side connection point | Connected to protected line (e.g., CAN_H, LIN, sensor supply); polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C junction rating | Enables direct placement on powertrain control boards without thermal derating penalties |
| 0.95 mm profile | Reduces board space and improves airflow in dense automotive ECUs |
| Passivated anisotropic rectifier | Delivers stable VBR drift < 0.06 %/°C and low leakage (< 25 µA at VWM) over life |
| AEC-Q101 qualification | Validates robustness against mechanical shock, vibration, and high-temperature storage for automotive use |
| MSL Level 1 | Allows unlimited floor life and single-reflow processing at 260 °C peak without moisture sensitivity risk |
Applications
| Automotive Sensor Interface Protection | CAN Bus Transient Suppression |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller ADC input to clamp surges above 7.78 V while maintaining signal integrity. Use Value: Prevents ADC saturation and latch-up during 600 W transients, preserving measurement accuracy and system uptime. |
Use Scenario: Safeguarding CAN_H and CAN_L lines in body control modules against ESD events and battery disconnect spikes. IC Role / Device Role / Timing Role: Dual TVS pair (one per line) referenced to ground, leveraging 44.8 V clamping to stay below ISO 11898-2 fault voltage limits. Use Value: Maintains CAN bit timing integrity during ±30 kV contact discharge by limiting line voltage excursion to < 45 V. |
| Power Supply Rail Clamping | LIN Bus Overvoltage Protection |
|
Use Scenario: Secondary protection on 12 V power rails feeding infotainment head units and ADAS camera modules. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing residual transients after primary DC-DC converter filtering. Use Value: Limits rail voltage to ≤ 44.8 V during load dump, preventing damage to 3.3 V/5 V LDOs and PMICs downstream. |
Use Scenario: Protecting LIN transceiver pins in door module actuators subjected to wiring harness ESD and ground bounce. IC Role / Device Role / Timing Role: Single unidirectional TVS on LIN bus line referenced to ground, sized for 13.4 A peak pulse current. Use Value: Ensures LIN frame error rate remains < 10−9 after repeated ±30 kV discharges due to low clamping voltage and fast response. |
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, 14.4 V VC @ 32.2 A, same SlimSMA package but lower peak power (400 W) | Lower clamping voltage but reduced surge margin; suitable only for non-automotive industrial use | Select SMAJ9.0A only if system-level testing confirms 400 W surge energy is sufficient and AEC-Q101 is not required. |
| TPSMA6L9.0A | 9.0 V VBR, 14.4 V VC @ 32.2 A, same package, AEC-Q101 qualified but 400 W PPPM | Same automotive qualification but 33 % lower peak pulse power than TA6F9.1AHM3_A/H | Choose TPSMA6L9.0A when board space constraints prevent using higher-power alternatives and surge profiles are well characterized. |
Compared with SMAJ9.0A and TPSMA6L9.0A, TA6F9.1AHM3_A/H delivers 50 % higher peak pulse power (600 W vs. 400 W) and tighter VBR tolerance (±5 % vs. ±10 %), enabling more robust protection margins in automotive environments with uncertain surge amplitudes.
Availability
TA6F9.1AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, CAN/LIN bus hardening, and 12 V power rail clamping requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TA6F9.1AHM3_A/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 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 under-hood automotive electronics where sustained 150–185 °C operation and AEC-Q101 compliance are mandatory.
FAQ
What is the exact breakdown voltage range for TA6F9.1AHM3_A/H?
The TA6F9.1AHM3_A/H has a guaranteed breakdown voltage (VBR) range of 8.65 V to 9.55 V at 1.0 mA test current, with a nominal value of 9.10 V. This tight ±5 % tolerance ensures consistent clamping behavior across production lots and temperature extremes up to 185 °C junction temperature.
Is TA6F9.1AHM3_A/H compatible with lead-free reflow processes?
Yes, TA6F9.1AHM3_A/H is qualified for lead-free reflow with a maximum peak temperature of 260 °C, meeting J-STD-020 MSL Level 1 requirements. Its matte tin-plated terminals comply with J-STD-002 and JESD22-B102 solderability standards, ensuring reliable wetting and joint formation.
Does TA6F9.1AHM3_A/H meet automotive qualification standards?
Yes, TA6F9.1AHM3_A/H is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (UHAST). This validates its suitability for automotive powertrain, chassis, and body electronics.
What is the clamping voltage of TA6F9.1AHM3_A/H under standard surge conditions?
The TA6F9.1AHM3_A/H clamps to a maximum of 44.8 V at 13.4 A peak pulse current under the industry-standard 10/1000 µs waveform. This value is measured and guaranteed per datasheet specifications and forms the basis for system-level surge protection design.
How does the SlimSMA (DO-221AC) package benefit PCB layout for TA6F9.1AHM3_A/H?
The SlimSMA (DO-221AC) package of TA6F9.1AHM3_A/H offers 0.95 mm typical height and optimized thermal pad geometry, enabling compact placement near sensitive ICs while maintaining low thermal resistance (RθJM = 12–15 °C/W) and supporting automated SMT assembly without tombstoning.
TA6F9.1AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-221AC, SMA Flat Leads
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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_A/H FAQ
1.How can I place an order for TA6F9.1AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F9.1AHM3_A/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 TA6F9.1AHM3_A/H reliable?
The price and inventory of TA6F9.1AHM3_A/H 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_A/H is usually 5 days.
3.What payment methods are accepted for TA6F9.1AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F9.1AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F9.1AHM3_A/H?
TA6F9.1AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F9.1AHM3_A/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 TA6F9.1AHM3_A/H?
For technical support, including TA6F9.1AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F9.1AHM3_A/H requirements.
6.How does Aetrix verify that TA6F9.1AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TA6F9.1AHM3_A/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 TA6F9.1AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TA6F9.1AHM3_A/H?
All TA6F9.1AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TA6F9.1AHM3_A/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 TA6F9.1AHM3_A/H part is unused and in its original packaging.
Return procedure for TA6F9.1AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F9.1AHM3_A/H Tags
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