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Vishay General Semiconductor - Diodes Division TA6F6.8AHM3/6B
- Part No.:
- TA6F6.8AHM3/6B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F6.8AHM3/6B.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,681
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Product details
Overview
TA6F6.8AHM3/6B from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching transients and ESD events on signal lines and power rails. 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 interface protection.
For engineers reviewing the TA6F6.8AHM3/6B datasheet, TA6F6.8AHM3/6B pinout, TA6F6.8AHM3/6B application, or TA6F6.8AHM3/6B equivalent, this device is selected for high-temperature operation (TJ = –65 °C to +185 °C), low-profile DO-221AC packaging, and IEC 61000-4-2 Level 4 ESD immunity (±15 kV air / ±8 kV contact).
Technical Context
The TA6F6.8AHM3/6B operates as a unidirectional avalanche diode with passivated anisotropic rectifier technology, enabling stable clamping under repetitive surge stress. Its junction temperature rating of 185 °C and thermal resistance RθJA = 145 °C/W support use in compact, thermally constrained PCB layouts without active cooling.
It delivers 10.5 V maximum clamping voltage (VC) at 57.1 A peak pulse current (IPPM) under 10/1000 μs waveform, with 5.8 V stand-off voltage (VWM) and ≤500 μA reverse leakage at TJ = 150 °C - critical for low-power sensor and microcontroller I/O line protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise avalanche onset for predictable clamping threshold |
| VWM | 5.8 V - maximum continuous reverse voltage before significant leakage begins |
| VC @ IPPM | 10.5 V at 57.1 A - clamped voltage seen by protected IC during worst-case 600 W surge |
| PPPM | 600 W (10/1000 μs) - surge energy handling capacity for automotive load-dump and inductive kick events |
| TJ max | +185 °C - enables placement near hot components (e.g., power MOSFETs, DC-DC converters) without derating |
| ESD Rating | IEC 61000-4-2 Level 4: ±15 kV air / ±8 kV contact - meets industrial and automotive ESD immunity requirements |
| Package | DO-221AC (SlimSMA) - 0.95 mm height, halogen-free, RoHS-compliant, MSL Level 1, 260 °C reflow compatible |
Pinout & Package
DO-221AC (SlimSMA) package: surface-mount, single-ended unidirectional configuration with cathode indicated by color band. Dimensions: 4.15–4.35 mm length × 2.50–2.70 mm width × 0.95 mm height. Matte tin-plated terminals meet J-STD-002 solderability and JESD22-B102 lead finish standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected circuit ground or return path | Completes conduction path during reverse-biased transient; must be routed with low-inductance ground plane |
| Cathode | High-side connection to protected signal or supply line | Marked by color band; connects to line requiring overvoltage clamping (e.g., CAN_H, USB_VBUS, sensor VDD) |
Key Features
| Feature | Design Value |
|---|---|
| Uni-directional clamping | Protects only against reverse-polarity surges while allowing normal forward-bias operation of downstream circuitry |
| Junction passivation | Enables stable VBR and low leakage across 185 °C operating range and extended lifetime under thermal cycling |
| AEC-Q101 qualification | Validated for automotive under-hood and infotainment applications per stress test requirements (HTOL, TC, HTRB, etc.) |
| Low profile (0.95 mm) | Permits placement in space-constrained modules (e.g., camera modules, radar sensors, ECUs) without mechanical interference |
| MSL Level 1 | Eliminates bake-out requirement prior to reflow; supports standard SMT assembly with peak 260 °C profile |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and battery reverse-connection transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output pin and ground to clamp negative-going spikes and positive overvoltage events. Use Value: Prevents latch-up or permanent damage to 5 V or 3.3 V analog front-end ICs while maintaining signal integrity below VWM = 5.8 V. |
Use Scenario: Safeguarding PLC digital input channels exposed to 24 V DC field wiring subject to inductive kickback from solenoid valves and relays. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminal and common rail to absorb 600 W surges without triggering false logic states. Use Value: Enables reliable operation at ambient temperatures up to +105 °C with no derating required due to TJ = 185 °C rating. |
| Consumer USB Port Protection | Telecom Power Rail Clamping |
|
Use Scenario: ESD suppression on USB 2.0 D+ and D− lines in portable devices subjected to frequent human-contact discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100 pF typical) placed directly at connector to shunt fast ESD pulses before reaching PHY IC. Use Value: Meets IEC 61000-4-2 Level 4 (±15 kV air) without signal distortion, preserving 480 Mbps data integrity. |
Use Scenario: Secondary overvoltage protection on +48 V telecom power distribution boards where primary DC-DC converters may experience regulation failure. IC Role / Device Role / Timing Role: High-energy TVS mounted on bulk capacitor feed line to clamp sustained overvoltage to safe levels before downstream regulators. Use Value: Withstands 600 W surges for ≥1000 μs duration and maintains clamping at 10.5 V - well below 12 V absolute maximum ratings of most PMICs. |
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; lower PPPM = 400 W; VC = 11.2 V at 35.1 A; not AEC-Q101 qualified | Limited to commercial-grade industrial equipment; unsuitable for automotive under-hood deployment | Select SMAJ6.8A only when cost sensitivity outweighs automotive qualification and 600 W surge margin. |
| SMCJ6.8A | DO-214AB package; larger footprint (7.11 × 6.22 mm); PPPM = 1500 W; VC = 11.5 V at 130 A; AEC-Q101 qualified | Requires PCB redesign for larger pad layout; suited for higher-energy surge environments (e.g., motor drives) | Choose SMCJ6.8A when system-level surge testing exceeds 600 W or when board space allows larger package for enhanced thermal margin. |
Compared with SMAJ6.8A and SMCJ6.8A, the TA6F6.8AHM3/6B uniquely balances AEC-Q101 compliance, 600 W capability, and ultra-low 0.95 mm profile - making it optimal for space- and reliability-critical automotive sensor nodes where neither commercial nor legacy industrial TVS diodes suffice.
Availability
TA6F6.8AHM3/6B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and consumer USB port ESD suppression requiring stable component supply across multi-year production cycles.
Supply support for TA6F6.8AHM3/6B 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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The TA6F6.8AHM3/6B belongs to Vishay's PAR® family of surface-mount TVS diodes engineered specifically for high-temperature stability and AEC-Q101 compliance in next-generation automotive electronics and harsh-environment industrial control systems.
FAQ
What is the clamping voltage of the TA6F6.8AHM3/6B under a 600 W surge?
The TA6F6.8AHM3/6B clamps to a maximum of 10.5 V at 57.1 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured and guaranteed per Vishay Document Number 89939, ensuring protected circuits remain within safe operating limits during transient events. The TA6F6.8AHM3/6B achieves this with minimal voltage overshoot due to its optimized junction passivation and low dynamic impedance.
Is the TA6F6.8AHM3/6B suitable for automotive applications?
Yes, the TA6F6.8AHM3/6B is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and infotainment applications. Its DO-221AC package meets MSL Level 1 and withstands 260 °C reflow, and its IEC 61000-4-2 Level 4 ESD rating ensures robustness against real-world handling and environmental stress. The TA6F6.8AHM3/6B is explicitly validated for automotive use in Vishay's qualification report.
What does the "HM3/6B" suffix indicate in TA6F6.8AHM3/6B?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. The "6B" indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 14,000 units. This distinguishes it from the "6A" variant (7-inch reel, 3,500 units) and confirms full compliance with automotive supply chain traceability and material requirements. The TA6F6.8AHM3/6B meets all specified environmental and reliability criteria per its ordering code.
How does the TA6F6.8AHM3/6B compare to standard SMAJ series TVS diodes?
The TA6F6.8AHM3/6B offers higher peak pulse power (600 W vs. 400 W for SMAJ6.8A), tighter VBR tolerance (6.45–7.14 V vs. 6.4–7.2 V), and AEC-Q101 qualification - features absent in the commercial SMAJ series. Its DO-221AC package is also 0.25 mm lower than DO-214AC, enabling thinner end products. Unlike SMAJ6.8A, the TA6F6.8AHM3/6B is fully specified for automotive use, with validated performance across temperature and lifetime stress tests.
Can the TA6F6.8AHM3/6B be used in bidirectional configurations?
No - the TA6F6.8AHM3/6B is strictly unidirectional, as confirmed in the Vishay datasheet under FEATURES ("Uni-directional only"). It conducts only during reverse-bias overvoltage events and blocks forward current beyond its VF. For bidirectional protection (e.g., AC lines or differential buses), a separate symmetric TVS or back-to-back diode arrangement is required. Using the TA6F6.8AHM3/6B in bidirectional roles would leave the forward polarity unprotected.
TA6F6.8AHM3/6B 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):
- 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)
TA6F6.8AHM3/6B FAQ
1.How can I place an order for TA6F6.8AHM3/6B through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F6.8AHM3/6B 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 TA6F6.8AHM3/6B reliable?
The price and inventory of TA6F6.8AHM3/6B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F6.8AHM3/6B is usually 5 days.
3.What payment methods are accepted for TA6F6.8AHM3/6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F6.8AHM3/6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F6.8AHM3/6B?
TA6F6.8AHM3/6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F6.8AHM3/6B 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 TA6F6.8AHM3/6B?
For technical support, including TA6F6.8AHM3/6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F6.8AHM3/6B requirements.
6.How does Aetrix verify that TA6F6.8AHM3/6B is sourced from the original manufacturer or authorized distributors?
All TA6F6.8AHM3/6B 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 TA6F6.8AHM3/6B meets industry standards.
7.What is the process for return or replacement of TA6F6.8AHM3/6B?
All TA6F6.8AHM3/6B units undergo pre-shipment inspection (PSI). If there is an issue with TA6F6.8AHM3/6B, 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 TA6F6.8AHM3/6B part is unused and in its original packaging.
Return procedure for TA6F6.8AHM3/6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F6.8AHM3/6B Tags
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