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Vishay General Semiconductor - Diodes Division TA6F12AHM3/6B
- Part No.:
- TA6F12AHM3/6B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F12AHM3/6B.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,490
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Product details
Overview
TA6F12AHM3/6B from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor in DO-221AC (SlimSMA) package, featuring 11.4 V to 12.6 V breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), 16.7 V clamping voltage at 35.9 A peak pulse current, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive-grade reliability. It protects MOSFETs and ICs against inductive switching transients in engine control units.
For engineers reviewing the TA6F12AHM3/6B datasheet, TA6F12AHM3/6B pinout, TA6F12AHM3/6B application, or TA6F12AHM3/6B equivalent, key selection criteria include unidirectional polarity, 185 °C maximum junction temperature, 145 °C/W junction-to-ambient thermal resistance, IEC 61000-4-2 Level 4 ESD immunity (15 kV air / 8 kV contact), and SlimSMA mechanical compatibility with automated SMT placement.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low-profile mounting. Its unidirectional configuration provides reverse-biased clamping only, requiring correct cathode orientation relative to protected circuit polarity.
Designed for transient suppression on DC power rails and signal lines, it delivers 600 W peak pulse power under 10/1000 μs waveform while maintaining clamping voltage ≤16.7 V at 35.9 A. Thermal performance is characterized by RθJA = 145 °C/W (on FR-4 minimum pad) and RθJM = 20 °C/W, enabling operation up to TJ = 185 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V - Ensures reliable turn-on above 10.2 V operating rail without false triggering |
| VWM | 10.2 V - Maximum continuous reverse voltage before leakage exceeds 2 μA at 150 °C |
| VC @ IPPM | 16.7 V - Clamped voltage during 35.9 A surge, limiting stress on downstream 12 V-rated components |
| PPPM | 600 W - Withstands 10/1000 μs transients common in automotive load-dump and inductive kick scenarios |
| TJ max | 185 °C - Supports under-hood automotive applications without derating in ambient up to 125 °C |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - Protects sensor interfaces against human-body model discharges |
| Package | DO-221AC (SlimSMA) - 0.95 mm profile enables dense PCB layouts; halogen-free, RoHS-compliant, MSL Level 1 |
Pinout & Package
DO-221AC (SlimSMA) package: cathode-indicating band on top surface; matte tin-plated terminals solderable per J-STD-002/JESD22-B102; meets UL 94 V-0; 0.106" × 0.047" footprint (2.70 mm × 1.20 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lower-potential node; defines forward conduction path |
| Cathode | Protected line connection | Connected to line being protected; clamps transients to VC when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Uni-directional clamping | Enables precise overvoltage protection on positive-rail systems without affecting normal forward bias operation |
| 185 °C junction rating | Eliminates thermal derating in high-ambient automotive environments such as powertrain and body control modules |
| 600 W peak pulse power | Handles ISO 7637-2 Pulse 1, 2a, 3a/b transients without degradation under standard test conditions |
| AEC-Q101 qualification | Validates robustness for automotive electronics per stress-test requirements including HTGB, HTRB, and TCT |
| 0.95 mm profile | Reduces board space and height constraints in compact modules like ADAS camera housings and LED drivers |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protection of 12 V microcontroller supply rail against load-dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamping reverse transients to ≤16.7 V during 600 W surges. Use Value: Prevents MCU reset or latch-up by limiting rail excursion below 18 V, meeting ISO 16750-2 severity IV requirements. |
Use Scenario: Safeguarding 24 V digital input optocoupler interface against field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Fast-response transient suppressor absorbing 10/1000 μs spikes before they reach isolation barrier. Use Value: Maintains signal integrity and extends optocoupler lifetime by limiting reverse voltage to 16.7 V at 35.9 A peak. |
| Automotive Body Control Module (BCM) | Consumer Appliance Motor Driver Board |
Use Scenario: Shielding LIN bus transceiver power pins from battery reversal and jump-start induced transients. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 10.2 V) placed directly at transceiver VCC pin. Use Value: Blocks >10.2 V reverse events while allowing normal 12 V operation; clamps to 16.7 V within 1 ns response time. |
Use Scenario: Suppressing inductive kickback from brushed DC motor commutation on smart home appliance PCBs. IC Role / Device Role / Timing Role: Primary rail protector on 12 V motor supply, mounted adjacent to H-bridge MOSFET source. Use Value: Limits MOSFET drain-source voltage to safe levels (<18 V), preventing avalanche failure during rapid current decay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/5A (Vishay) | Same DO-214AC package; higher VBR (13.3–14.7 V); lower PPPM (400 W); no AEC-Q101 qualification | Not suitable for automotive qualified designs; acceptable for industrial/commercial 12 V rails with lower surge severity | Select SMAJ12A-E3/5A only if AEC-Q101 is not required and 400 W pulse rating suffices |
| 1.5SMC12A (ON Semiconductor) | DO-214AB package (larger); VBR 12.2–13.5 V; PPPM 1500 W; AEC-Q101 qualified; 1.7 mm height | Requires PCB layout change due to larger footprint and height; suited for higher-energy transients where space permits | Choose 1.5SMC12A when system-level surge energy exceeds 600 W and board real estate allows larger package |
Compared with SMAJ12A-E3/5A and 1.5SMC12A, TA6F12AHM3/6B uniquely combines AEC-Q101 qualification, 0.95 mm ultra-low profile, and 600 W capability in DO-221AC-making it optimal for space-constrained automotive modules where thermal margin and reliability are critical.
Availability
TA6F12AHM3/6B is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC input protection, and consumer appliance motor driver boards requiring stable component supply across production lifecycles.
Supply support for TA6F12AHM3/6B 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 diodes, rectifiers, and protection devices with emphasis on high-reliability and automotive-grade performance.
The TA6F series is part of Vishay's PAR® TVS platform designed specifically for high-temperature, high-reliability transient suppression in automotive powertrain and body electronics where compact size and AEC-Q101 compliance are mandatory.
FAQ
What is the exact breakdown voltage range for TA6F12AHM3/6B?
The TA6F12AHM3/6B has a guaranteed breakdown voltage (VBR) range of 11.4 V to 12.6 V at 1.0 mA test current, measured per the Vishay datasheet Document Number 89939. This ensures consistent clamping behavior across production lots and supports design margining for 12 V nominal systems.
Is TA6F12AHM3/6B suitable for bidirectional transient protection?
No, TA6F12AHM3/6B is strictly unidirectional and must be oriented with cathode toward the protected line. It does not suppress positive transients on grounded lines. For bidirectional protection, a separate device such as a symmetric TVS or back-to-back configuration is required-TA6F12AHM3/6B alone cannot fulfill that function.
Does TA6F12AHM3/6B meet automotive qualification standards?
Yes, TA6F12AHM3/6B is AEC-Q101 qualified per the Vishay datasheet, confirming its suitability for automotive applications. Qualification includes stress tests such as high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), validating long-term reliability under harsh vehicle environments.
What is the maximum clamping voltage of TA6F12AHM3/6B under surge conditions?
The TA6F12AHM3/6B clamps to a maximum of 16.7 V at its rated peak pulse current of 35.9 A (10/1000 μs waveform). This value is specified in the Electrical Characteristics table of the datasheet and represents the upper limit of voltage seen by protected circuitry during worst-case transient events.
Can TA6F12AHM3/6B be used in high-humidity or under-hood environments?
Yes, TA6F12AHM3/6B uses a molding compound rated UL 94 V-0 and is qualified to MSL Level 1 (per J-STD-020), meaning it is not moisture-sensitive and can be reflowed without preconditioning. Its 185 °C maximum junction temperature and AEC-Q101 qualification confirm suitability for under-hood deployment with exposure to humidity, thermal cycling, and chemical contaminants.
TA6F12AHM3/6B 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):
- 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)
TA6F12AHM3/6B FAQ
1.How can I place an order for TA6F12AHM3/6B through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F12AHM3/6B 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 TA6F12AHM3/6B reliable?
The price and inventory of TA6F12AHM3/6B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F12AHM3/6B is usually 5 days.
3.What payment methods are accepted for TA6F12AHM3/6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F12AHM3/6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F12AHM3/6B?
TA6F12AHM3/6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F12AHM3/6B 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 TA6F12AHM3/6B?
For technical support, including TA6F12AHM3/6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F12AHM3/6B requirements.
6.How does Aetrix verify that TA6F12AHM3/6B is sourced from the original manufacturer or authorized distributors?
All TA6F12AHM3/6B 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 TA6F12AHM3/6B meets industry standards.
7.What is the process for return or replacement of TA6F12AHM3/6B?
All TA6F12AHM3/6B units undergo pre-shipment inspection (PSI). If there is an issue with TA6F12AHM3/6B, 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 TA6F12AHM3/6B part is unused and in its original packaging.
Return procedure for TA6F12AHM3/6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F12AHM3/6B Tags
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