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Vishay General Semiconductor - Diodes Division TA6F12AHM3/6A
- Part No.:
- TA6F12AHM3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F12AHM3/6A.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
TA6F12AHM3/6A from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SlimSMA (DO-221AC) package, featuring 12.0 V nominal breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), and 600 W peak pulse power (10/1000 µs). It delivers 35.9 V clamping voltage at 16.7 A peak surge current and supports operation up to +185 °C junction temperature - ideal for automotive sensor line protection against inductive switching transients.
For engineers reviewing the TA6F12AHM3/6A datasheet, TA6F12AHM3/6A pinout, TA6F12AHM3/6A application, or TA6F12AHM3/6A equivalent, this device is evaluated for high-reliability automotive electronics requiring AEC-Q101 qualification, 30 kV IEC 61000-4-2 ESD immunity, MSL Level 1 moisture sensitivity, and low-profile mounting on space-constrained PCBs.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with junction passivation optimized for stable clamping under repetitive surge stress. Its unidirectional configuration enables precise reverse-biased overvoltage clamping on signal or power lines without forward conduction interference.
Thermal design is supported by RθJA = 120–150 °C/W (FR4 board, minimum pad layout) and RθJM = 12–15 °C/W, enabling reliable operation at TJ = 185 °C. The 0.95 mm typical height and matte tin-plated leads ensure compatibility with automated SMT placement and J-STD-002 solderability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 11.4 / 12.0 / 12.6 V at 1.0 mA - defines precise voltage threshold where clamping initiates under transient stress |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage exceeds 2.0 µA at 25 °C |
| VC @ IPPM | 35.9 V at 16.7 A - clamped voltage during 600 W (10/1000 µs) surge, limiting downstream IC stress |
| PPPM | 600 W - peak transient power handling capability per standard waveform, critical for lightning/inductive spike suppression |
| TJ max | +185 °C - enables use in under-hood automotive environments without thermal derating penalties |
| ESD Rating | ±30 kV contact/air per IEC 61000-4-2 - protects sensitive inputs against human-body-model electrostatic discharge events |
| Package | SlimSMA (DO-221AC) - 0.95 mm profile, 2.70 × 4.35 mm footprint, halogen-free, RoHS-compliant, AEC-Q101 qualified |
Pinout & Package
SlimSMA (DO-221AC) is a two-terminal surface-mount package with cathode indicated by a color band. Terminals are matte tin-plated, solderable per J-STD-002 and JESD22-B102, and qualified to JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for unidirectional clamping | Connected to circuit ground or lower-potential rail; forms return path during reverse transient |
| Cathode | Clamping output node | Connected to protected line (e.g., sensor signal); conducts surge current to ground when VLINE > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.95 mm typical height) | Enables placement beneath low-clearance shields or connectors in compact automotive ECUs |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per stress test standards |
| Junction passivation optimized design | Reduces parameter drift and leakage increase after repeated surge events, extending service life in harsh environments |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow without preconditioning, simplifying manufacturing flow |
| Unidirectional polarity | Prevents forward conduction during normal operation while providing robust reverse-transient clamping |
Applications
| Automotive Sensor Protection | Power Supply Input Clamping |
|---|---|
Use Scenario: Protecting analog outputs of pressure, temperature, or position sensors in engine control modules exposed to load-dump and inductive kickback. IC Role / Device Role: Unidirectional TVS placed between sensor signal line and chassis ground. Use Value: Limits transient voltage to ≤35.9 V during 16.7 A surges, preventing damage to 3.3 V or 5 V ADC front-ends and maintaining signal integrity. |
Use Scenario: Clamping 12 V battery rail transients caused by alternator load dump or relay switching in body control modules. IC Role / Device Role: Primary overvoltage clamp on main power input before DC/DC converter or LDO regulator. Use Value: Absorbs 600 W pulses without degradation, preserving downstream regulator functionality and meeting ISO 7637-2 Pulse 5a requirements. |
| Infotainment Interface Lines | Industrial CAN Bus Termination |
Use Scenario: ESD protection on USB, LIN, or I²C lines connecting head unit to display or touch controller. IC Role / Device Role: Point-of-entry TVS on bidirectional data lines with minimal capacitance impact. Use Value: Provides ±30 kV IEC 61000-4-2 immunity while adding <10 pF junction capacitance, avoiding signal integrity loss at 400 kHz I²C speeds. |
Use Scenario: Transient suppression on CAN_H/CAN_L lines in industrial gateways subjected to long cable runs and ground potential differences. IC Role / Device Role: Secondary clamping device parallel to common-mode choke and primary TVS. Use Value: Handles differential surges up to 16.7 A while maintaining 10.2 V stand-off to avoid false triggering during CAN recessive state (2.5 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Same 12 V VBR, but 400 W PPPM, SMA package (1.7 mm height), no AEC-Q101 qualification | Limited to commercial/industrial use; unsuitable for automotive under-hood deployment | Select SMAJ12A only for cost-sensitive non-automotive designs where 600 W surge margin and 185 °C operation are not required. |
| TPSMF12A | Same SlimSMA package and AEC-Q101 rating, but 12.2 V VBR min, 34.0 V VC @ 17.3 A, 600 W rating | Lower clamping voltage improves protection margin for 3.3 V logic interfaces | Choose TPSMF12A when tighter clamping (<34.0 V) is prioritized over exact VBR match; verify layout compatibility with identical DO-221AC footprint. |
Compared with SMAJ12A and TPSMF12A, TA6F12AHM3/6A offers the highest thermal robustness (TJ = 185 °C) and lowest profile (0.95 mm) among AEC-Q101-qualified 12 V TVS diodes in SlimSMA, making it optimal for thermally dense automotive modules where height clearance and long-term reliability are critical.
Availability
TA6F12AHM3/6A is available at Aetrix Electronics and suitable for automotive sensor protection, power supply input clamping, infotainment interface lines, and industrial CAN bus termination requiring stable component supply across production lifecycles.
Supply support for TA6F12AHM3/6A 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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability, automotive-qualified solutions.
The TA6F series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for automotive-grade surge and ESD protection in space-constrained, high-temperature environments such as engine control units and ADAS sensor modules.
FAQ
What is the breakdown voltage tolerance of TA6F12AHM3/6A?
The TA6F12AHM3/6A has a guaranteed breakdown voltage range of 11.4 V (min) to 12.6 V (max) at 1.0 mA test current, with 12.0 V nominal. This ±5% tolerance ensures consistent clamping initiation across production lots and temperature extremes up to +185 °C, supporting robust design margins in automotive applications.
Is TA6F12AHM3/6A compatible with lead-free reflow processes?
Yes, TA6F12AHM3/6A is rated for MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C. Its matte tin-plated terminals meet J-STD-002 solderability requirements, enabling direct integration into standard lead-free SMT assembly lines without prebaking or special handling.
Does TA6F12AHM3/6A support bidirectional transient suppression?
No, TA6F12AHM3/6A is a unidirectional TVS diode. It clamps only reverse-polarity transients above its breakdown voltage. For bidirectional protection, a separate device such as the bi-directional TA6F12CA or a back-to-back configuration would be required - TA6F12AHM3/6A must be oriented with cathode toward the protected line.
How does the 0.95 mm profile of TA6F12AHM3/6A impact PCB layout?
The 0.95 mm typical height of TA6F12AHM3/6A allows placement beneath low-profile shields, connectors, or heat sinks in compact automotive ECUs. Its SlimSMA (DO-221AC) footprint (2.70 × 4.35 mm) maintains standard SMT tooling compatibility while reducing vertical stack-up versus legacy SMA packages - critical for multi-layer boards with tight Z-axis constraints.
What is the maximum allowable reverse leakage current for TA6F12AHM3/6A at 10.2 V?
At VWM = 10.2 V and TA = 25 °C, TA6F12AHM3/6A exhibits a maximum reverse leakage current of 2.0 µA. At elevated temperature (TJ = 150 °C), leakage remains ≤5.0 µA, ensuring minimal power loss and signal distortion in always-on automotive circuits such as sensor bias rails.
TA6F12AHM3/6A 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 35.9A
- 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)
TA6F12AHM3/6A FAQ
1.How can I place an order for TA6F12AHM3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F12AHM3/6A 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 TA6F12AHM3/6A reliable?
The price and inventory of TA6F12AHM3/6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F12AHM3/6A is usually 5 days.
3.What payment methods are accepted for TA6F12AHM3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F12AHM3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F12AHM3/6A?
TA6F12AHM3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F12AHM3/6A 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 TA6F12AHM3/6A?
For technical support, including TA6F12AHM3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F12AHM3/6A requirements.
6.How does Aetrix verify that TA6F12AHM3/6A is sourced from the original manufacturer or authorized distributors?
All TA6F12AHM3/6A 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 TA6F12AHM3/6A meets industry standards.
7.What is the process for return or replacement of TA6F12AHM3/6A?
All TA6F12AHM3/6A units undergo pre-shipment inspection (PSI). If there is an issue with TA6F12AHM3/6A, 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 TA6F12AHM3/6A part is unused and in its original packaging.
Return procedure for TA6F12AHM3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F12AHM3/6A Tags
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