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Vishay General Semiconductor - Diodes Division TA6F6.8AHM3_A/I
- Part No.:
- TA6F6.8AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F6.8AHM3_A/I.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:13,976
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Product details
Overview
TA6F6.8AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for automotive-grade circuit protection. 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 under-hood and sensor-line applications.
For engineers reviewing the TA6F6.8AHM3_A/I datasheet, TA6F6.8AHM3_A/I pinout, TA6F6.8AHM3_A/I application, or TA6F6.8AHM3_A/I equivalent, this device delivers verified clamping performance (VC = 10.5 V at IPPM), high-temperature operation up to +185 °C junction, and ESD immunity to ±30 kV per IEC 61000-4-2 - critical for robust automotive electronics design.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology in a SlimSMA (DO-221AC) package, enabling low-profile mounting (0.95 mm height) and compatibility with automated SMT assembly. Its unidirectional polarity, defined by a cathode band, supports DC-biased signal and power line protection without reverse conduction.
The device operates across -65 °C to +185 °C junction temperature range and meets MSL Level 1 (260 °C reflow peak). Thermal resistance is RθJA = 120–150 °C/W (FR4 board, min pad layout) and RθJM = 12–15 °C/W, supporting reliable thermal management in compact automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 6.45 / 6.80 / 7.14 V at 10 mA - defines precise clamping onset threshold for overvoltage events |
| VWM | 5.80 V - maximum continuous reverse working voltage before leakage rises significantly |
| VC at IPPM | 10.5 V at 57.1 A - clamped voltage during 600 W surge, limiting stress on downstream ICs |
| PPPM | 600 W (10/1000 µs) - standardized surge handling capacity for automotive load-dump and ESD transients |
| TJ max | +185 °C - enables use in high-temperature engine compartments without derating penalties |
| ESD rating | ±30 kV contact/air (IEC 61000-4-2) - eliminates need for external ESD diodes on sensor interfaces |
| Package | SlimSMA (DO-221AC), 0.95 mm height - fits tight PCB spacing while maintaining thermal performance |
Pinout & Package
SlimSMA (DO-221AC) surface-mount package with matte tin-plated terminals, halogen-free and RoHS-compliant. Cathode identified by color band; anode and cathode are the only two terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for protected line (e.g., sensor supply or signal) | Connected to the line requiring overvoltage suppression; current flows into anode during clamping |
| Cathode | Reference/return terminal (marked with band) | Connected to ground or lower-potential rail; establishes unidirectional clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature capability | TJ = 185 °C enables direct placement near heat sources (e.g., ECUs, motor drivers) without thermal derating |
| AEC-Q101 qualification | Validated reliability for automotive applications including vibration, thermal cycling, and humidity exposure |
| Low-profile SlimSMA package | 0.95 mm height allows integration into space-constrained modules such as camera housings and radar sensors |
| Optimized junction passivation | Reduces leakage drift over time and temperature, ensuring stable VBR and VC in long-life deployments |
| MSL Level 1 rating | Supports standard 260 °C lead-free reflow without preconditioning or baking |
Applications
| Automotive Sensor Protection | Power Line Transient Suppression |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from ESD and load-switching spikes in ADAS modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller input pin. Use Value: Limits transient voltage to ≤10.5 V, preventing latch-up or damage to 3.3 V/5 V interface logic while maintaining signal integrity. | Use Scenario: Safeguarding 12 V supply rails in body control modules against ISO 7637-2 pulse 1/2a/5a transients and alternator load dump. IC Role / Device Role / Timing Role: Primary front-end surge protector on main power input before LDO or DC-DC converter. Use Value: Absorbs 600 W surges without failure, preserving system uptime and eliminating need for redundant protection stages. |
| Infotainment Interface Protection | Electric Power Steering (EPS) Signal Lines |
Use Scenario: Shielding USB, HDMI, or LVDS lines in head units and display modules from hot-plug ESD and cable-induced noise. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential data pairs to avoid signal distortion. Use Value: Delivers ±30 kV ESD protection with minimal impact on signal rise/fall times due to optimized junction design. | Use Scenario: Securing torque sensor and motor phase feedback signals in EPS systems exposed to high EMI and switching noise. IC Role / Device Role / Timing Role: Point-of-use clamping on analog and PWM signal paths between motor controller and steering angle sensor. Use Value: Maintains functional safety integrity by preventing false fault triggers caused by >10.5 V transients on critical feedback loops. |
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 SlimSMA package, but rated for 400 W PPPM and lower TJ max (150 °C); no AEC-Q101 qualification | Limited to industrial or consumer-grade designs without automotive reliability requirements | Select when cost sensitivity outweighs AEC-Q101 compliance and 600 W surge margin is not required |
| SMCJ6.8A | Higher 1500 W PPPM rating in larger DO-214AB package; same VBR range but 2.3 mm height vs. 0.95 mm | Used where PCB real estate is less constrained and higher surge energy must be absorbed | Choose when system-level testing requires >600 W clamping capability and height tolerance permits larger footprint |
Compared with SMAJ6.8A and SMCJ6.8A, TA6F6.8AHM3_A/I uniquely combines AEC-Q101 qualification, 600 W surge rating, and ultra-low 0.95 mm profile - making it the optimal choice for next-generation automotive modules where reliability, space, and thermal performance are co-constrained.
Availability
TA6F6.8AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, power line transient suppression, and infotainment interface hardening requiring stable component supply and full traceability.
Supply support for TA6F6.8AHM3_A/I 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 optoelectronics for automotive, industrial, and computing markets.
The TA6F series belongs to Vishay's PAR® family of high-temperature TVS diodes, engineered specifically for automotive electronics demanding AEC-Q101 compliance, extended junction temperature operation, and consistent clamping performance under harsh environmental conditions.
FAQ
What is the breakdown voltage tolerance of TA6F6.8AHM3_A/I?
The TA6F6.8AHM3_A/I has a specified breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current, with a nominal value of 6.80 V. This ±5% tolerance ensures predictable clamping behavior across production lots and temperature extremes, critical for meeting automotive functional safety thresholds.
Is TA6F6.8AHM3_A/I compatible with lead-free reflow soldering processes?
Yes, TA6F6.8AHM3_A/I meets J-STD-020 MSL Level 1 with a maximum peak reflow temperature of 260 °C. Its matte tin-plated terminals and halogen-free molding compound ensure reliable wetting and intermetallic formation during standard lead-free reflow profiles without popcorn or delamination risks.
Does TA6F6.8AHM3_A/I require external biasing or control circuitry?
No, TA6F6.8AHM3_A/I is a passive unidirectional TVS diode that operates without any external bias, control signals, or power supply. It functions solely based on its intrinsic junction characteristics - conducting only during overvoltage events above VBR, with no active circuitry or configuration needed.
How does the thermal resistance of TA6F6.8AHM3_A/I affect its surge handling in real-world PCB layouts?
TA6F6.8AHM3_A/I exhibits RθJA = 120–150 °C/W on FR4 with minimum recommended pads. In practice, this means a 600 W 10/1000 µs pulse causes <10 °C average junction temperature rise - confirming its ability to absorb repeated transients without thermal runaway, provided copper area meets Vishay's layout guidelines.
Can TA6F6.8AHM3_A/I replace older SMAJ6.8A devices in existing automotive designs?
TA6F6.8AHM3_A/I is not a drop-in replacement for SMAJ6.8A due to differences in surge rating (600 W vs. 400 W), temperature capability (185 °C vs. 150 °C), and qualification status (AEC-Q101 vs. non-automotive). Redesign validation is required to confirm system-level robustness, especially for high-energy transients and extended temperature operation.
TA6F6.8AHM3_A/I 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:
- Active
- 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_A/I FAQ
1.How can I place an order for TA6F6.8AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F6.8AHM3_A/I 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_A/I reliable?
The price and inventory of TA6F6.8AHM3_A/I 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_A/I is usually 5 days.
3.What payment methods are accepted for TA6F6.8AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F6.8AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F6.8AHM3_A/I?
TA6F6.8AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F6.8AHM3_A/I 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_A/I?
For technical support, including TA6F6.8AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F6.8AHM3_A/I requirements.
6.How does Aetrix verify that TA6F6.8AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TA6F6.8AHM3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of TA6F6.8AHM3_A/I?
All TA6F6.8AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TA6F6.8AHM3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for TA6F6.8AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F6.8AHM3_A/I Tags
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