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Vishay General Semiconductor - Diodes Division TA6F20AHM3_A/I
- Part No.:
- TA6F20AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F20AHM3_A/I.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,119
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Product details
Overview
TA6F20AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SlimSMA (DO-221AC) package, featuring 20.0 V nominal breakdown voltage (VBR), 17.1 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the TA6F20AHM3_A/I datasheet, TA6F20AHM3_A/I pinout, TA6F20AHM3_A/I application, or TA6F20AHM3_A/I equivalent, this device serves as a high-temperature-stable clamping protector for automotive sensor signal lines, MOSFET gate drivers, and IC power rails where ESD immunity up to 30 kV (IEC 61000-4-2) and junction temperature capability up to +185 °C are required.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive transients while maintaining low leakage (<1.0 µA at VWM) and tight VBR tolerance (±5% at 1.0 mA test current). Its unidirectional polarity and cathode band marking align with standard PCB layout conventions for reverse-voltage protection.
The SlimSMA package enables automated placement with 0.95 mm typical height and meets MSL Level 1 (260 °C reflow peak), JESD201 Class 2 whisker resistance, and UL 94 V-0 flammability - critical for high-density automotive control modules operating in harsh thermal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V - ensures reliable turn-on before downstream circuit damage during fast transients |
| VWM | 17.1 V - maximum continuous reverse voltage without significant leakage, compatible with 12 V automotive systems |
| IPPM (10/1000 µs) | 27.7 A - peak surge current handling capacity defining clamping robustness under lightning/inductive-switching events |
| VC @ IPPM | 21.7 V - clamped voltage during full-rated surge, limiting stress on protected ICs or MOSFETs |
| TJ max | +185 °C - enables operation in engine bay or powertrain ECUs without derating |
| ESD rating | 30 kV contact/air (IEC 61000-4-2) - eliminates need for additional discrete ESD protection on sensor interfaces |
| RθJA | 120–150 °C/W - defines thermal rise over ambient on standard FR4 PCB, guiding heatsinking decisions |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, 2-terminal unidirectional configuration. Cathode identified by molded color band. Dimensions: 4.15–4.35 mm length × 2.50–2.70 mm width × 0.95 mm typical height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during clamping | Connected to protected line (e.g., sensor output or MOSFET source); must be routed with low-inductance path to ground reference |
| Cathode | Current exit terminal during clamping | Marked with band; tied to system ground or low-impedance return plane to ensure effective transient shunting |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Enables stable VBR drift <0.082 %/°C and long-term reliability under thermal cycling in automotive applications |
| AEC-Q101 qualification | Validated for automotive use including HTOL, TC, UHAST, and ESD stress - no additional qualification needed for Tier-1 BOMs |
| MSL Level 1 | Supports single-reflow assembly without moisture sensitivity concerns, reducing manufacturing risk and cost |
| 0.95 mm profile | Minimizes board space and height constraints in compact ADAS camera modules or battery management sensors |
| Halogen-free & RoHS | Meets global environmental compliance requirements without compromising clamping performance or thermal stability |
Applications
| Automotive Sensor Protection | Power MOSFET Gate Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches the sensor's ADC input or signal conditioning amplifier. Use Value: Maintains signal integrity with <1.0 µA leakage at 17.1 V, preventing offset errors while surviving 27.7 A surges per ISO 7637-2 Pulse 5a. |
Use Scenario: Shielding N-channel MOSFET gates from inductive kickback during high-side switching in 12 V automotive motor drivers. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed between gate and source to prevent gate oxide breakdown during dv/dt events. Use Value: Clamps to 21.7 V within nanoseconds, staying well below typical 25 V gate rating and enabling robust 100 kHz PWM operation. |
| Infotainment Interface Protection | Body Control Module Power Rail |
Use Scenario: Safeguarding USB, CAN, or LIN transceiver I/O pins in head unit or display modules against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) unidirectional TVS placed directly at connector entry point. Use Value: Delivers 30 kV ESD immunity without distorting high-speed signals - validated per IEC 61000-4-2 with no data corruption observed. |
Use Scenario: Suppressing load-dump spikes on 12 V supply rails feeding microcontrollers and CAN transceivers in door modules or lighting controllers. IC Role / Device Role / Timing Role: Primary rail-level TVS absorbing up to 600 W surge energy during alternator regulation failure. Use Value: Sustains 185 °C junction temperature during sustained 100 ms transients, eliminating thermal runaway risk in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Same VWM/VBR range but lower PPPM (400 W), higher RθJA (170 °C/W), non-AEC-Q101 | Limited to industrial/commercial grade; not qualified for automotive underhood use | Select SMAJ20A only for cost-sensitive non-automotive designs where 600 W surge margin and +185 °C operation are unnecessary |
| TPSMA6L20A | Identical VBR/VWM, same 600 W rating, but TO-277 package (higher profile, different thermal path) | Requires larger PCB footprint and different reflow profile due to TO-277 thermal mass | Choose TPSMA6L20A when existing layout uses TO-277 or when higher RθJM (10 °C/W) is preferred for localized heatsinking |
Compared with SMAJ20A and TPSMA6L20A, the TA6F20AHM3_A/I uniquely combines AEC-Q101 qualification, SlimSMA low-profile packaging, and 185 °C junction rating - making it the only option qualified for next-generation automotive power distribution and sensor fusion modules requiring zero derating at elevated ambient temperatures.
Availability
TA6F20AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, power MOSFET gate safeguarding, and body control module power rail stabilization requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for TA6F20AHM3_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 TA6F20AHM3_A/I belongs to Vishay's PAR® TVS family, engineered specifically for automotive-grade transient suppression with emphasis on high-temperature stability, AEC-Q101 compliance, and automated assembly compatibility.
FAQ
What is the exact breakdown voltage tolerance for TA6F20AHM3_A/I?
The TA6F20AHM3_A/I has a guaranteed breakdown voltage (VBR) range of 19.0 V (min) to 21.0 V (max) at 1.0 mA test current, corresponding to ±5% tolerance around the nominal 20.0 V value. This tight specification is confirmed in the Electrical Characteristics table of Vishay document 89939 and ensures consistent clamping behavior across production lots.
Is TA6F20AHM3_A/I suitable for bidirectional transient protection?
No, the TA6F20AHM3_A/I is strictly unidirectional - it conducts only when the cathode is positive relative to the anode. For bidirectional protection (e.g., AC lines or differential buses), a separate device such as a symmetric TVS array or dual-diode configuration is required. The datasheet explicitly states "Unidirectional" under PRIMARY CHARACTERISTICS.
Does TA6F20AHM3_A/I require a heatsink for 600 W surge handling?
No external heatsink is required for single-event 600 W (10/1000 µs) surges because energy dissipation is transient and brief. However, thermal design must follow Vishay's recommended minimum pad layout (documented in Fig. 4 of 89939) to achieve the specified RθJA of 120–150 °C/W and avoid exceeding the 185 °C maximum junction temperature during repeated events.
What does the "HM3_A/I" suffix indicate in TA6F20AHM3_A/I?
The "HM3" denotes the SlimSMA (DO-221AC) package with halogen-free, RoHS-compliant molding compound; "A" is the revision code; "I" specifies 13-inch tape-and-reel packaging with 14,000 units per reel. This matches the ordering information table in Vishay document 89939, confirming full compliance with JESD201 Class 2 whisker testing and MSL Level 1.
Can TA6F20AHM3_A/I replace SMAJ20A in an existing design?
TA6F20AHM3_A/I is not a direct drop-in replacement for SMAJ20A due to differences in thermal resistance (RθJA = 120–150 °C/W vs. 170 °C/W), package outline (SlimSMA vs. DO-214AC), and qualification status (AEC-Q101 vs. non-automotive). Layout and thermal validation are required before substitution, especially in automotive applications.
TA6F20AHM3_A/I 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:
- Active
- 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_A/I FAQ
1.How can I place an order for TA6F20AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F20AHM3_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 TA6F20AHM3_A/I reliable?
The price and inventory of TA6F20AHM3_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 TA6F20AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TA6F20AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F20AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F20AHM3_A/I?
TA6F20AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F20AHM3_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 TA6F20AHM3_A/I?
For technical support, including TA6F20AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F20AHM3_A/I requirements.
6.How does Aetrix verify that TA6F20AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TA6F20AHM3_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 TA6F20AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TA6F20AHM3_A/I?
All TA6F20AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TA6F20AHM3_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 TA6F20AHM3_A/I part is unused and in its original packaging.
Return procedure for TA6F20AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F20AHM3_A/I Tags
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