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Vishay General Semiconductor - Diodes Division TA6F9.1AHM3/6B
- Part No.:
- TA6F9.1AHM3/6B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F9.1AHM3/6B.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO221AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TA6F9.1AHM3/6B from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and ESD events on signal lines and power rails. It features a breakdown voltage of 8.65–9.55 V at 1.0 mA, clamps to ≤13.4 V at 44.8 A (10/1000 μs), delivers 600 W peak pulse power, and operates up to +185 °C junction temperature - ideal for automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the TA6F9.1AHM3/6B datasheet, TA6F9.1AHM3/6B pinout, TA6F9.1AHM3/6B application, or TA6F9.1AHM3/6B equivalent, this page provides verified electrical specs, DO-221AC package dimensions, AEC-Q101 qualification status, clamping performance at rated IPPM, and real-world use cases in automotive and industrial electronics.
Technical Context
The TA6F9.1AHM3/6B employs passivated anisotropic rectifier technology optimized for high-temperature reliability and low-profile mounting. Its unidirectional architecture enables precise forward-biased clamping during overvoltage transients while maintaining low leakage (<25 µA at 7.78 V, TJ = 25 °C) and robust ESD immunity (IEC 61000-4-2 Level 4: ±8 kV contact / ±15 kV air).
Thermally, it achieves RθJA = 145 °C/W on FR-4 with minimum pad layout and RθJM = 20 °C/W to mount, supporting operation across -65 °C to +185 °C. The device is qualified per AEC-Q101 and meets MSL Level 1 (260 °C reflow peak), making it suitable for automated SMT assembly in automotive-grade production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65–9.55 V at 1.0 mA - defines precise clamping onset threshold for overvoltage detection |
| Stand-off Voltage VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 25 µA |
| Peak Pulse Power PPPM | 600 W (10/1000 µs) - sustains high-energy transients without failure in automotive load-dump scenarios |
| Clamping Voltage VC | ≤13.4 V at 44.8 A - limits downstream IC voltage stress during surge events |
| Junction Temperature TJ(max) | +185 °C - enables deployment in under-hood automotive environments and high-ambient industrial enclosures |
| ESD Rating | IEC 61000-4-2 Level 4: ±8 kV contact / ±15 kV air - protects against human-body model discharges in exposed interfaces |
| Package | DO-221AC (SlimSMA) - 0.95 mm profile supports ultra-thin PCB designs and automated pick-and-place |
Pinout & Package
DO-221AC (SlimSMA) package: cathode-indicating band on top surface; anode and cathode terminals on opposite ends of molded body; matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards; HM3 suffix denotes halogen-free, RoHS-compliant, AEC-Q101-qualified construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward conduction mode | Connected to ground or lower-potential rail; forms low-impedance path during clamping |
| Cathode | Current exit terminal; marked by color band | Connected to protected line (e.g., CAN_H, sensor output); voltage referenced to anode during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Uni-directional clamping | Enables precise overvoltage suppression on DC-biased lines without affecting normal forward operation |
| TJ = 185 °C capability | Supports sustained operation in engine control units, motor drivers, and industrial PLCs with elevated ambient temperatures |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a transients and lightning-induced surges in 12 V/24 V systems |
| AEC-Q101 qualification | Validates reliability for automotive applications including ADAS sensors, body control modules, and infotainment interfaces |
| MSL Level 1 (260 °C) | Permits single-reflow assembly without moisture sensitivity concerns, reducing manufacturing risk |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting analog outputs of pressure, temperature, and position sensors in engine bay and chassis modules from load dump and inductive kickback. IC Role / Device Role / Timing Role: TVS diode placed between sensor output line and ground to clamp transients before they reach ADC input or signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to precision op-amps and microcontroller analog inputs during 12 V system transients. |
Use Scenario: Shielding RS-485, CAN, or 4–20 mA current loop transceivers in factory automation controllers from ESD and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS connected across differential bus lines (e.g., CAN_H–CAN_L) and to ground to absorb common-mode surges. Use Value: Maintains signal integrity and prevents communication faults during field maintenance or electrostatic discharge near equipment cabinets. |
| Consumer Appliance Motor Control | Telecom Power Input Stage |
|
Use Scenario: Safeguarding gate drivers and MCU GPIOs in smart home appliance motor inverters subjected to brush-commutator noise and relay switching spikes. IC Role / Device Role / Timing Role: TVS mounted at motor driver IC supply pins and logic-level inputs to suppress fast-rising edge transients (tr < 1 ns). Use Value: Eliminates false triggering and resets caused by sub-microsecond voltage overshoots during MOSFET turn-off. |
Use Scenario: Front-end protection of AC/DC and DC/DC converters in base station power supplies exposed to lightning-induced surges on primary-side inputs. IC Role / Device Role / Timing Role: Primary-side TVS placed between rectified input and ground to limit voltage seen by bulk capacitor and PFC controller. Use Value: Extends capacitor lifetime and avoids overvoltage shutdown of UCC28070 or similar controllers during 6 kV surge tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Higher VBR (8.5–9.4 V), same DO-214AC package, 600 W rating, but only rated to +150 °C TJ | Lacks AEC-Q101 qualification and 185 °C capability; not approved for under-hood automotive use | Select SMAJ9.0A only for cost-sensitive consumer or industrial applications where extended temperature range is not required |
| SMCJ9.0A | Same VBR range, higher 1500 W PPPM, larger DO-214AB package (2.5 mm height), RθJA = 19 °C/W | Provides greater surge margin but requires more board space and thermal management; not drop-in compatible | Choose SMCJ9.0A when system-level testing shows 600 W insufficient for worst-case ISO 7637-2 Pulse 5a events |
Compared with SMAJ9.0A and SMCJ9.0A, the TA6F9.1AHM3/6B uniquely combines AEC-Q101 qualification, +185 °C operation, and SlimSMA packaging - enabling compact, high-reliability placement directly at sensor connectors or MCU I/O pads without thermal derating penalties.
Availability
TA6F9.1AHM3/6B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom power input staging requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101-qualified sourcing.
Supply support for TA6F9.1AHM3/6B 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 TVS devices for automotive, industrial, and computing markets.
The TA6F9.1AHM3/6B belongs to Vishay's PAR® family of high-temperature TVS diodes, engineered specifically for robust transient suppression in harsh-environment electronics where extended junction temperature and AEC-Q101 compliance are mandatory.
FAQ
What is the exact breakdown voltage range of the TA6F9.1AHM3/6B?
The TA6F9.1AHM3/6B has a guaranteed breakdown voltage (VBR) range of 8.65 V to 9.55 V at a test current of 1.0 mA, measured per the Vishay datasheet Document Number 89939. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in safety-critical automotive applications.
Is the TA6F9.1AHM3/6B qualified for automotive use?
Yes, the TA6F9.1AHM3/6B is fully AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 18-Apr-16. It meets stress test requirements for temperature cycling, humidity bias, mechanical shock, and ESD - making it suitable for deployment in engine control units, ADAS camera modules, and body electronics where automotive-grade reliability is mandated.
What package does the TA6F9.1AHM3/6B use, and what are its key mechanical features?
The TA6F9.1AHM3/6B uses the DO-221AC (SlimSMA) package: 0.95 mm typical height, 2.70 mm × 4.35 mm footprint, cathode band marking, matte tin-plated leads, and UL 94 V-0 molding compound. Its low profile enables use in space-constrained modules such as automotive radar sensors and portable industrial handhelds.
How does the clamping performance of the TA6F9.1AHM3/6B compare to its stand-off voltage?
The TA6F9.1AHM3/6B clamps to ≤13.4 V at 44.8 A (10/1000 µs), while its maximum stand-off voltage (VWM) is 7.78 V. This 72 % clamping ratio (VC/VWM) ensures sufficient margin above normal operating voltage while limiting transient overshoot to safe levels for 5 V and 3.3 V logic interfaces downstream.
Does the TA6F9.1AHM3/6B meet industry-standard ESD immunity requirements?
Yes, the TA6F9.1AHM3/6B meets IEC 61000-4-2 Level 4 ESD immunity: ±8 kV contact discharge and ±15 kV air discharge. This is validated per the Vishay datasheet and enables direct integration into USB, CAN, and sensor interface lines without additional external ESD protection components.
TA6F9.1AHM3/6B 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:
- 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)
TA6F9.1AHM3/6B FAQ
1.How can I place an order for TA6F9.1AHM3/6B through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F9.1AHM3/6B 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 TA6F9.1AHM3/6B reliable?
The price and inventory of TA6F9.1AHM3/6B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F9.1AHM3/6B is usually 5 days.
3.What payment methods are accepted for TA6F9.1AHM3/6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F9.1AHM3/6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F9.1AHM3/6B?
TA6F9.1AHM3/6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F9.1AHM3/6B 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 TA6F9.1AHM3/6B?
For technical support, including TA6F9.1AHM3/6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F9.1AHM3/6B requirements.
6.How does Aetrix verify that TA6F9.1AHM3/6B is sourced from the original manufacturer or authorized distributors?
All TA6F9.1AHM3/6B 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 TA6F9.1AHM3/6B meets industry standards.
7.What is the process for return or replacement of TA6F9.1AHM3/6B?
All TA6F9.1AHM3/6B units undergo pre-shipment inspection (PSI). If there is an issue with TA6F9.1AHM3/6B, 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 TA6F9.1AHM3/6B part is unused and in its original packaging.
Return procedure for TA6F9.1AHM3/6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F9.1AHM3/6B Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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