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Vishay General Semiconductor - Diodes Division TA6F20AHM3/6B
- Part No.:
- TA6F20AHM3/6B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F20AHM3/6B.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,527
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Product details
Overview
TA6F20AHM3/6B from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor in DO-221AC (SlimSMA) package, rated for 600 W peak pulse power (10/1000 μs), 27.7 V clamping voltage at 21.7 A surge current, and 185 °C maximum junction temperature. It provides ESD protection per IEC 61000-4-2 Level 4 (15 kV air / 8 kV contact) and is AEC-Q101 qualified for automotive-grade reliability.
For engineers reviewing the TA6F20AHM3/6B datasheet, TA6F20AHM3/6B pinout, TA6F20AHM3/6B application, or TA6F20AHM3/6B equivalent, this page delivers verified electrical specs, thermal characteristics, mechanical dimensions, and real-world use context for circuit-level transient suppression on signal lines, MOSFET gates, and sensor interfaces in high-reliability embedded systems.
Technical Context
The TA6F20AHM3/6B employs passivated anisotropic rectifier technology with junction passivation optimized for stable breakdown behavior under repetitive transients. Its 19.0–21.0 V breakdown voltage range (at 1.0 mA test current) and 17.1 V stand-off voltage enable reliable operation across industrial and automotive ambient conditions up to +125 °C ambient.
Thermal design is supported by RθJA = 145 °C/W (on FR-4 minimum pad layout) and RθJM = 20 °C/W, enabling effective heat transfer to PCB copper. The device's uni-directional polarity-marked by cathode band-and MSL Level 1 rating (260 °C reflow peak) ensure compatibility with automated SMT assembly processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 19.0–21.0 V at 1.0 mA - defines precise conduction onset for overvoltage clamping |
| Stand-off Voltage VWM | 17.1 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA |
| Clamping Voltage VC | 27.7 V at 21.7 A (10/1000 μs) - limits downstream voltage stress during surge events |
| Peak Pulse Power | 600 W (10/1000 μs) - sustains high-energy transients without failure |
| Junction Temperature Range | −65 °C to +185 °C - supports operation in under-hood automotive and industrial environments |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - protects against human-body model discharges |
| Package | DO-221AC (SlimSMA) - 0.95 mm profile enables space-constrained PCB layouts |
Pinout & Package
DO-221AC (SlimSMA) package: ultra-low-profile surface-mount case with cathode band marking; dimensions 3.12 mm × 1.52 mm × 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 | Current entry terminal during forward conduction | Connected to ground or low-impedance return path in uni-directional TVS configuration |
| Cathode | Current exit terminal; marked by color band | Connected to protected line (e.g., signal, power rail) - clamps when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Uni-directional architecture | Enables precise clamping on positive-going transients while blocking reverse leakage below VWM |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| 185 °C junction capability | Permits operation in high-temperature zones (e.g., near power converters or under-hood ECUs) without derating |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without moisture-induced damage |
| Low-profile height (0.95 mm) | Reduces board stack height and improves airflow in dense multi-layer PCBs |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Uni-directional TVS placed between signal line and ground to clamp fast-rising overvoltages before they reach sensitive input stages. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V interface ICs while maintaining signal integrity due to low capacitance (< 100 pF typical). |
Use Scenario: Shielding digital and analog I/O channels of programmable logic controllers from field-side surges caused by relay coil de-energization or motor drive noise. IC Role / Device Role / Timing Role: Primary transient suppressor on 24 V DC input/output lines, operating in parallel with upstream fuses and downstream filtering. Use Value: Enables >100,000 surge cycles at rated 600 W without parameter drift, ensuring long-term system uptime in factory automation. |
| Consumer Device USB Port Protection | Telecom Base Station Power Monitoring |
Use Scenario: Safeguarding USB 2.0 data lines and VBUS supply in portable medical monitors and smart home hubs against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector entry point to shunt ESD energy before it couples into PHY or PMIC. Use Value: Meets IEC 61000-4-2 Level 4 without compromising signal rise/fall times (capacitance < 100 pF at zero bias). |
Use Scenario: Protecting voltage-sense inputs of DC-DC converters and battery management units in 4G/5G remote radio heads exposed to lightning-induced surges. IC Role / Device Role / Timing Role: High-reliability clamping element on 48 V telecom power monitoring paths, operating continuously at elevated ambient temperatures. Use Value: Maintains stable VBR and low leakage (<1.0 μA at VWM) across −40 °C to +105 °C ambient, critical for accurate telemetry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Same DO-214AC package; lower PPPM (400 W), higher VC (32.4 V at 12.3 A), no AEC-Q101 qualification | Limited to commercial-grade consumer/industrial use; not suitable for automotive under-hood deployment | Select SMAJ20A only where cost sensitivity outweighs automotive qualification and 600 W surge margin requirements. |
| SMCJ20A | DO-214AB package; larger footprint (7.11 mm × 6.22 mm); higher PPPM (1500 W); same VBR range but higher VC (34.0 V) | Better suited for high-power industrial AC/DC front-end protection where board space permits larger case | Choose SMCJ20A when surge energy exceeds 600 W or when thermal dissipation requires larger copper area than SlimSMA allows. |
Compared with SMAJ20A and SMCJ20A, the TA6F20AHM3/6B uniquely combines AEC-Q101 qualification, 600 W surge rating, and ultra-low 0.95 mm height in DO-221AC - making it optimal for space-constrained, high-reliability automotive and industrial signal-line protection where both qualification and form factor matter.
Availability
TA6F20AHM3/6B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power monitoring circuits requiring stable component supply, long-lifecycle support, and guaranteed AEC-Q101 compliance.
Supply support for TA6F20AHM3/6B 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The TA6F20AHM3/6B belongs to Vishay's PAR® family of high-temperature, high-reliability TVS diodes engineered specifically for automotive and industrial environments where sustained operation above 150 °C and immunity to repetitive transients are mandatory.
FAQ
What is the exact breakdown voltage range for TA6F20AHM3/6B?
The TA6F20AHM3/6B has a specified breakdown voltage (VBR) range of 19.0 V to 21.0 V at a test current of 1.0 mA, measured per the Vishay datasheet Document Number 89939. This range ensures consistent clamping onset across production lots and temperature extremes, supporting reliable overvoltage protection in safety-critical designs where threshold predictability matters.
Is TA6F20AHM3/6B suitable for automotive under-hood applications?
Yes, the TA6F20AHM3/6B is AEC-Q101 qualified and rated for a maximum junction temperature of +185 °C, making it suitable for under-hood automotive applications such as engine control units, transmission control modules, and ADAS sensor interfaces. Its thermal resistance (RθJA = 145 °C/W on minimum pad layout) and MSL Level 1 reflow compatibility further validate its readiness for harsh automotive manufacturing and operational environments.
Does TA6F20AHM3/6B have bidirectional or unidirectional polarity?
The TA6F20AHM3/6B is strictly unidirectional, as confirmed in the Vishay datasheet under FEATURES and ELECTRICAL CHARACTERISTICS. Polarity is indicated by a cathode band on the DO-221AC package, and the device conducts only when the cathode is at a higher potential than the anode - essential for protecting positive-rail signals and avoiding unintended conduction on negative transients.
What is the clamping voltage of TA6F20AHM3/6B at its rated surge current?
The TA6F20AHM3/6B clamps to a maximum of 27.7 V at its peak pulse current (IPPM) of 21.7 A under the standard 10/1000 μs waveform. This value is measured and guaranteed per the datasheet's ELECTRICAL CHARACTERISTICS table and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can TA6F20AHM3/6B be used in high-speed data lines like USB or HDMI?
The TA6F20AHM3/6B exhibits typical junction capacitance below 100 pF at zero bias (per Fig. 4 in the datasheet), which makes it viable for USB 2.0 and low-frequency analog signal lines. However, it is not recommended for HDMI or USB 3.x due to insufficient bandwidth and lack of differential-pair optimization - use dedicated low-capacitance TVS arrays for those interfaces instead.
TA6F20AHM3/6B 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- 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)
TA6F20AHM3/6B FAQ
1.How can I place an order for TA6F20AHM3/6B through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F20AHM3/6B 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 TA6F20AHM3/6B reliable?
The price and inventory of TA6F20AHM3/6B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F20AHM3/6B is usually 5 days.
3.What payment methods are accepted for TA6F20AHM3/6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F20AHM3/6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F20AHM3/6B?
TA6F20AHM3/6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F20AHM3/6B 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 TA6F20AHM3/6B?
For technical support, including TA6F20AHM3/6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F20AHM3/6B requirements.
6.How does Aetrix verify that TA6F20AHM3/6B is sourced from the original manufacturer or authorized distributors?
All TA6F20AHM3/6B 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 TA6F20AHM3/6B meets industry standards.
7.What is the process for return or replacement of TA6F20AHM3/6B?
All TA6F20AHM3/6B units undergo pre-shipment inspection (PSI). If there is an issue with TA6F20AHM3/6B, 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 TA6F20AHM3/6B part is unused and in its original packaging.
Return procedure for TA6F20AHM3/6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F20AHM3/6B Tags
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