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Vishay General Semiconductor - Diodes Division TA6F20AHM3/6A
- Part No.:
- TA6F20AHM3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F20AHM3/6A.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,667
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Product details
Overview
TA6F20AHM3/6A from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features a 19.0–21.0 V breakdown voltage (VBR), 17.1 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 27.7 V maximum clamping voltage at 21.7 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the TA6F20AHM3/6A datasheet, TA6F20AHM3/6A pinout, TA6F20AHM3/6A application, or TA6F20AHM3/6A equivalent, key selection criteria include its DO-221AC (SlimSMA) package, 185 °C max junction temperature, IEC 61000-4-2 Level 4 ESD immunity (15 kV air / 8 kV contact), uni-directional polarity, and suitability for high-density automated placement in automotive sensor modules and industrial power supplies.
Technical Context
This TVS diode operates as a voltage-clamping protection device in series with sensitive downstream circuitry, activating only when reverse voltage exceeds VWM = 17.1 V and fully clamping at VC = 27.7 V under 21.7 A surge current. Its passivated anisotropic rectifier structure enables stable performance up to TJ = 185 °C and supports high-reliability operation in engine control units and motor drivers.
The DO-221AC package delivers low profile (0.95 mm height), MSL Level 1 moisture sensitivity, and matte tin-plated terminals compliant with J-STD-002 and JESD22-B102. Thermal resistance is RθJA = 145 °C/W (on FR-4 minimum pad) and RθJM = 20 °C/W, enabling effective heat transfer to PCB copper in space-constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V - Ensures reliable turn-on above system operating voltage while avoiding false triggering during normal transients. |
| VWM | 17.1 V - Maximum continuous reverse working voltage compatible with 15–16 V nominal automotive rails. |
| VC @ IPPM | 27.7 V at 21.7 A - Limits downstream voltage stress during 600 W (10/1000 µs) surge events. |
| Peak Pulse Power | 600 W - Handles typical load-dump and ISO 7637-2 pulse 5a surges without degradation. |
| TJ max | 185 °C - Supports under-hood automotive applications and high-ambient industrial environments. |
| ESD Rating | IEC 61000-4-2 Level 4: ±15 kV air / ±8 kV contact - Protects against human-body-model ESD in exposed connectors and sensors. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic systems per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
Package: DO-221AC (SlimSMA), surface-mount, unidirectional, cathode indicated by color band. Dimensions: 4.15–4.35 mm length × 2.50–2.70 mm width × 0.95 mm height. RoHS-compliant, halogen-free, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or lower-potential rail; forms current path during reverse-biased clamping event. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V supply or CAN_H); carries full surge current into anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| DO-221AC SlimSMA package | 0.95 mm profile enables ultra-thin designs in automotive ADAS camera modules and compact power converters. |
| Junction passivation technology | Stable leakage (<1 µA at VWM) and clamping performance across -65 °C to +185 °C operating range. |
| AEC-Q101 qualification | Validated for automotive use with zero failures in HTGB (1000 hrs @ 150 °C) and temperature cycling (1000 cycles). |
| IEC 61000-4-2 Level 4 ESD | Withstands repeated 8 kV contact / 15 kV air discharges without parameter shift or catastrophic failure. |
| Matte tin plating & whisker-tested | HM3 suffix meets JESD201 Class 2 whisker resistance, ensuring long-term solder joint integrity in reflow assemblies. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Supply |
|---|---|
|
Use Scenario: Protection of 12 V microcontroller power input against load dump and alternator ripple. IC Role / Device Role: Primary overvoltage clamp on main VCC rail upstream of LDO regulators. Use Value: Clamps 600 W surges to ≤27.7 V, preventing brownout reset or latch-up in MCU and CAN transceivers. |
Use Scenario: Input rail protection for 24 V DC-fed servo drives exposed to inductive kickback from braking coils. IC Role / Device Role: Fast-response transient suppressor placed directly at connector entry before bulk capacitance. Use Value: Limits voltage overshoot to safe levels within 1 ns response time, preserving gate driver ICs and isolated feedback circuits. |
| Automotive Occupancy Sensor Module | Telecom Remote Radio Head (RRH) Power Interface |
|
Use Scenario: ESD and switching transient protection on LIN bus lines and supply pins of capacitive occupancy detection ASICs. IC Role / Device Role: Uni-directional TVS on 5 V and 12 V rails feeding analog front-end and microcontroller. Use Value: Maintains <1 µA leakage at 17.1 V, preserving low-power sleep mode current budget while passing 15 kV air discharge. |
Use Scenario: Surge protection on -48 V DC power feed entering outdoor RRH enclosures subject to lightning-induced surges. IC Role / Device Role: Secondary clamping stage after GDT or MOV primary protection, refining residual voltage. Use Value: Delivers precise 27.7 V clamping with minimal capacitance (<100 pF), avoiding signal integrity impact on high-speed control lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Same VWM (17.1 V), higher VC (32.4 V), lower PPPM (400 W), SMA package (1.75 mm height) | Larger footprint and height limit use in ultra-low-profile automotive modules | Select SMAJ20A only if board height >1.2 mm is acceptable and 400 W surge rating suffices. |
| 1.5SMC20A | Same VWM/VC, higher PPPM (1500 W), larger SMC package (2.6 mm height, 7.1 mm length) | Requires significantly more PCB area; not suitable for dense sensor PCBs | Choose 1.5SMC20A only for high-energy industrial surge environments where space permits. |
Compared with SMAJ20A and 1.5SMC20A, TA6F20AHM3/6A uniquely combines AEC-Q101 qualification, 0.95 mm height, and 600 W capability in DO-221AC-making it the only option qualified for space-constrained automotive electronics requiring both high reliability and low profile.
Availability
TA6F20AHM3/6A is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive development, telecom power interface hardening, and medical diagnostic equipment requiring stable component supply and long lifecycle support.
Supply support for TA6F20AHM3/6A 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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability, high-temperature, and automotive-qualified components.
The TA6F series was engineered specifically for next-generation automotive and industrial systems demanding AEC-Q101 compliance, ultra-low profile packaging, and robust transient suppression in harsh thermal environments.
FAQ
What is the exact breakdown voltage range for TA6F20AHM3/6A?
The TA6F20AHM3/6A has a guaranteed breakdown voltage (VBR) range of 19.0 V to 21.0 V at 1.0 mA test current, measured per the Vishay datasheet Document Number 89939. This ensures consistent activation threshold across production lots and temperature extremes, critical for predictable protection behavior in automotive 12 V systems where TA6F20AHM3/6A is commonly deployed.
Is TA6F20AHM3/6A suitable for bidirectional signal line protection?
No, TA6F20AHM3/6A is strictly unidirectional and must be used with correct polarity-cathode toward the protected line. It cannot suppress positive-going transients on grounded lines. For bidirectional protection, a dedicated bi-directional TVS such as SMBJ20CA would be required; TA6F20AHM3/6A is intended only for DC power rail or single-polarity signal line clamping.
Does TA6F20AHM3/6A meet automotive qualification standards?
Yes, TA6F20AHM3/6A is AEC-Q101 qualified per the Vishay datasheet, with full test reports covering HTGB, HTRB, TCT, and ESD. Its 185 °C maximum junction temperature and DO-221AC package construction make it suitable for under-hood automotive applications, including engine control modules and body electronics where TA6F20AHM3/6A provides certified surge resilience.
What is the maximum clamping voltage of TA6F20AHM3/6A under surge conditions?
The maximum clamping voltage (VC) of TA6F20AHM3/6A is 27.7 V at 21.7 A peak pulse current (10/1000 µs waveform). This value is measured and guaranteed per the datasheet, defining the upper voltage limit imposed on protected circuitry during worst-case surge events-ensuring downstream ICs like microcontrollers and CAN transceivers remain within safe operating limits when TA6F20AHM3/6A is applied.
Can TA6F20AHM3/6A be used in high-volume automated assembly?
Yes, TA6F20AHM3/6A is optimized for automated placement: its DO-221AC (SlimSMA) package has symmetric terminations, matte tin plating compliant with J-STD-002, and HM3 suffix meeting JESD201 Class 2 whisker resistance. The 0.95 mm profile and 3500-piece 7″ tape-and-reel format (6A code) ensure reliable pick-and-place yield in high-throughput SMT lines where TA6F20AHM3/6A is routinely deployed.
TA6F20AHM3/6A 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)
TA6F20AHM3/6A FAQ
1.How can I place an order for TA6F20AHM3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F20AHM3/6A 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 TA6F20AHM3/6A reliable?
The price and inventory of TA6F20AHM3/6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F20AHM3/6A is usually 5 days.
3.What payment methods are accepted for TA6F20AHM3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F20AHM3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F20AHM3/6A?
TA6F20AHM3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F20AHM3/6A 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 TA6F20AHM3/6A?
For technical support, including TA6F20AHM3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F20AHM3/6A requirements.
6.How does Aetrix verify that TA6F20AHM3/6A is sourced from the original manufacturer or authorized distributors?
All TA6F20AHM3/6A 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 TA6F20AHM3/6A meets industry standards.
7.What is the process for return or replacement of TA6F20AHM3/6A?
All TA6F20AHM3/6A units undergo pre-shipment inspection (PSI). If there is an issue with TA6F20AHM3/6A, 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 TA6F20AHM3/6A part is unused and in its original packaging.
Return procedure for TA6F20AHM3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F20AHM3/6A Tags
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