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Vishay General Semiconductor - Diodes Division TA6F6.8AHM3/6A
- Part No.:
- TA6F6.8AHM3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F6.8AHM3/6A.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,604
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Product details
Overview
TA6F6.8AHM3/6A from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor designed for clamping inductive switching transients and ESD events on sensitive signal lines. It features a 6.8 V breakdown voltage (VBR = 6.45–7.14 V at 10 mA), 600 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability in sensor interfaces and power supply rails.
For engineers reviewing the TA6F6.8AHM3/6A datasheet, TA6F6.8AHM3/6A pinout, TA6F6.8AHM3/6A application, or TA6F6.8AHM3/6A equivalent, key selection criteria include its DO-221AC (SlimSMA) package, 10.5 V clamping voltage at 57.1 A surge current, TJ = 185 °C operation, IEC 61000-4-2 Level 4 ESD rating, and unidirectional polarity with cathode band marking.
Technical Context
The TA6F6.8AHM3/6A employs passivated anisotropic rectifier technology to deliver stable clamping under repetitive transient stress while maintaining low leakage (<500 µA at 5.8 V, TJ = 150 °C). Its thermal resistance RθJA = 145 °C/W (FR-4, minimum pad) and RθJM = 20 °C/W enable robust thermal performance in compact layouts.
Designed for high-reliability environments, it supports continuous operation up to TJ = 185 °C, meets MSL Level 1 per J-STD-020 (260 °C peak reflow), and achieves 15 kV air / 8 kV contact ESD immunity-critical for automotive sensor units and industrial control I/O protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 6.45–7.14 V at 10 mA - defines precise clamping initiation threshold for overvoltage protection |
| Stand-off Voltage VWM | 5.80 V - maximum continuous reverse voltage before leakage exceeds 500 µA at 150 °C |
| Clamping Voltage VC | 10.5 V at 57.1 A (10/1000 µs) - limits downstream IC voltage during surge events |
| Peak Pulse Power | 600 W (10/1000 µs) - sustains high-energy transients without failure in automotive load-dump scenarios |
| Junction Temperature Range | −65 to +185 °C - enables deployment in under-hood automotive and industrial ambient conditions |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - protects against human-body-model electrostatic discharge |
| Package | DO-221AC (SlimSMA) - 0.95 mm profile allows placement in space-constrained PCBs with automated SMT assembly |
Pinout & Package
DO-221AC (SlimSMA) package: surface-mount, unidirectional device with cathode indicated by color band; dimensions 2.70 × 1.25 × 0.95 mm (L × W × H); matte tin-plated terminals compliant with J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected line | Connected to signal or power rail requiring transient suppression; referenced to ground via cathode path |
| Cathode | High-side connection to ground or reference | Marked by color band; provides low-impedance return path during clamping; must be routed to low-inductance ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low profile height | 0.95 mm - enables use in ultra-thin consumer electronics and stacked PCB assemblies |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR and low IR drift over temperature and lifetime |
| MSL Level 1 rating | Compatible with standard 260 °C lead-free reflow profiles without preconditioning or baking |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with environmental regulations and whisker-resistant plating (JESD 201 Class 2) |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach the transceiver input. Use Value: Prevents latch-up or permanent damage to automotive-grade ICs operating at 5 V or 3.3 V logic levels under harsh electrical environments. |
Use Scenario: Shielding PLC digital input modules from inductive kickback generated by solenoid valves and relay coils. IC Role / Device Role / Timing Role: Fast-response clamping device installed across input terminals to absorb 600 W surges without degradation. Use Value: Extends field service life of industrial controllers by eliminating false triggering and component failure due to repetitive switching transients. |
| Consumer USB/USB-C Port | Telecom Power Supply Input |
Use Scenario: ESD protection for USB 2.0 data lines and VBUS in portable devices subjected to frequent human contact. IC Role / Device Role / Timing Role: Primary-level TVS on differential pairs and power rail to meet IEC 61000-4-2 Level 4 requirements. Use Value: Maintains signal integrity and prevents port lockup during 15 kV air-gap discharges without adding capacitance that degrades 480 Mbps signaling. |
Use Scenario: Front-end surge suppression on 12 V or 24 V telecom power inputs exposed to lightning-induced surges and AC line faults. IC Role / Device Role / Timing Role: First-stage protector in multi-tiered architecture, absorbing bulk energy before downstream DC-DC converters. Use Value: Enables compliance with ITU-T K.20/21/44 standards by limiting clamped voltage to ≤10.5 V at 57.1 A, preserving downstream regulator functionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A | Same DO-214AC package but higher RθJA (150 °C/W), lower IPPM (53.5 A), and no AEC-Q101 qualification | Limited to commercial-grade industrial and computing applications; not approved for automotive use | Select SMAJ6.8A only when AEC-Q101 is not required and board layout allows slightly higher thermal resistance |
| TPSMF6.8A | DO-219AB package (1.6 × 0.8 mm), lower profile (0.7 mm), same VBR range, but rated for 400 W only | Better suited for ultra-thin mobile designs where height < 0.8 mm is mandatory; insufficient for 600 W automotive load-dump | Choose TPSMF6.8A for space-constrained consumer wearables; avoid where 600 W surge capability is mandated |
Compared with SMAJ6.8A and TPSMF6.8A, the TA6F6.8AHM3/6A uniquely combines AEC-Q101 qualification, 600 W surge rating, and 0.95 mm height in DO-221AC-making it the only option validated for automotive under-hood sensor protection with full industrial reflow compatibility.
Availability
TA6F6.8AHM3/6A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom power supply front-ends requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TA6F6.8AHM3/6A 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 protection devices for automotive, industrial, and computing markets.
The TA6F6.8AHM3/6A belongs to Vishay's PAR® (Protection Against Transients) family, engineered specifically for high-temperature stability and AEC-Q101-compliant transient suppression in next-generation automotive and industrial electronics.
FAQ
What is the exact breakdown voltage tolerance for TA6F6.8AHM3/6A?
The TA6F6.8AHM3/6A has a guaranteed breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current, as specified in the Vishay datasheet (Document Number: 89939, Rev. 18-Apr-16). This ±5% tolerance ensures consistent clamping behavior across production lots and temperature extremes up to 150 °C.
Is TA6F6.8AHM3/6A compatible with lead-free reflow soldering processes?
Yes, the TA6F6.8AHM3/6A meets J-STD-020 MSL Level 1 and supports peak reflow temperatures up to 260 °C, making it fully compatible with standard lead-free soldering profiles. Its HM3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance.
Does TA6F6.8AHM3/6A support bidirectional transient suppression?
No, the TA6F6.8AHM3/6A is strictly unidirectional, as confirmed in the Vishay datasheet under FEATURES ("Uni-directional only"). It must be oriented with the cathode band toward the protected circuit's ground reference; bidirectional protection requires a different device such as the SMBJ6.8CA.
What is the maximum clamping voltage of TA6F6.8AHM3/6A under surge conditions?
The TA6F6.8AHM3/6A clamps to a maximum of 10.5 V at 57.1 A peak pulse current (10/1000 µs waveform), per the Electrical Characteristics table in the official Vishay datasheet. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during worst-case transients.
How does TA6F6.8AHM3/6A differ from standard SMAJ6.8A in automotive applications?
The TA6F6.8AHM3/6A is AEC-Q101 qualified and rated for TJ = 185 °C, whereas SMAJ6.8A lacks automotive qualification and is rated only to 150 °C. Additionally, TA6F6.8AHM3/6A offers superior thermal resistance (RθJM = 20 °C/W) and tighter VBR tolerance-making it the only valid choice for under-hood automotive deployments requiring long-term reliability.
TA6F6.8AHM3/6A 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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 57.1A
- 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)
TA6F6.8AHM3/6A FAQ
1.How can I place an order for TA6F6.8AHM3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F6.8AHM3/6A 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 TA6F6.8AHM3/6A reliable?
The price and inventory of TA6F6.8AHM3/6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F6.8AHM3/6A is usually 5 days.
3.What payment methods are accepted for TA6F6.8AHM3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F6.8AHM3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F6.8AHM3/6A?
TA6F6.8AHM3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F6.8AHM3/6A 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 TA6F6.8AHM3/6A?
For technical support, including TA6F6.8AHM3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F6.8AHM3/6A requirements.
6.How does Aetrix verify that TA6F6.8AHM3/6A is sourced from the original manufacturer or authorized distributors?
All TA6F6.8AHM3/6A 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 TA6F6.8AHM3/6A meets industry standards.
7.What is the process for return or replacement of TA6F6.8AHM3/6A?
All TA6F6.8AHM3/6A units undergo pre-shipment inspection (PSI). If there is an issue with TA6F6.8AHM3/6A, 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 TA6F6.8AHM3/6A part is unused and in its original packaging.
Return procedure for TA6F6.8AHM3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F6.8AHM3/6A Tags
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