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Vishay General Semiconductor - Diodes Division TA6F11AHM3/6A
- Part No.:
- TA6F11AHM3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F11AHM3/6A.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,669
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Product details
Overview
TA6F11AHM3/6A from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching transients and ESD events on signal lines and power rails. It features a 10.5 V minimum breakdown voltage (VBR), 9.40 V standoff voltage (VWM), 15.6 V maximum clamping voltage at 38.5 A peak pulse current, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the TA6F11AHM3/6A datasheet, TA6F11AHM3/6A pinout, TA6F11AHM3/6A application, or TA6F11AHM3/6A equivalent, this device is selected for high-reliability protection of 12 V automotive sensor interfaces, industrial I/O lines, and low-capacitance signal paths where TJ = 185 °C operation and MSL Level 1 reflow compatibility are required.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable clamping performance across -65 °C to +185 °C junction temperature range. Its DO-221AC (SlimSMA) package enables automated placement and supports 260 °C lead-free reflow per J-STD-020.
The device operates unidirectionally with 2.0 μA max reverse leakage at VWM (TJ = 25 °C) and 5.0 μA at TJ = 150 °C, ensuring minimal standby power impact in always-on circuits. Thermal resistance is 145 °C/W (junction-to-ambient, FR-4 board) and 20 °C/W (junction-to-mount).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V at 1.0 mA - defines reliable conduction onset under overvoltage stress |
| VWM | 9.40 V - maximum continuous working voltage before leakage exceeds 2.0 μA |
| VC @ IPPM | 15.6 V at 38.5 A - clamping voltage during 600 W transient, limiting downstream IC stress |
| PPPM | 600 W (10/1000 μs) - surge energy handling capacity for automotive load-dump and ISO 7637-2 pulses |
| TJ max | +185 °C - enables under-hood deployment without derating in engine control modules |
| ESD rating | IEC 61000-4-2 Level 4: ±8 kV contact / ±15 kV air - protects against human-body model discharges |
| MSL level | Level 1 (per J-STD-020) - supports standard SMT reflow without dry-pack or baking requirements |
Pinout & Package
Package: DO-221AC (SlimSMA), 2-terminal surface-mount case with cathode band marking. 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 | Low-side reference terminal | Connected to ground or lowest potential node; forms forward-biased path during clamping |
| Cathode | Protected line connection | Marked by color band; connects to signal/power line requiring overvoltage protection |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | TJ = 185 °C capability ensures reliability in automotive under-hood environments |
| Low-profile packaging | 0.95 mm typical height enables use in space-constrained PCB layouts |
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
| ESD robustness | Withstands ±15 kV air and ±8 kV contact discharge without parametric shift or failure |
| Automated assembly support | Matte tin-plated leads compliant with J-STD-002 and JESD22-B102; whisker-resistant (JESD 201 Class 2) |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between signal line and ground to limit transient excursions below IC absolute maximum ratings. Use Value: Prevents latch-up or gate oxide damage in 12 V automotive sensors by clamping surges to ≤15.6 V at 38.5 A while maintaining <2 μA leakage at 9.4 V. |
Use Scenario: Safeguarding RS-485/RS-232 transceiver inputs and PLC analog input channels against ESD and field-induced transients in factory automation systems. IC Role / Device Role / Timing Role: Standoff-and-clamp protector on differential data lines, operating continuously at 9.4 V with fast response to sub-ns transients. Use Value: Enables compliance with IEC 61000-4-2 Level 4 and IEC 61000-4-4 Level 3 without adding series impedance or signal distortion. |
| Consumer Device Port Protection | Power Supply Input Clamping |
Use Scenario: Shielding USB, HDMI, and audio jack signal lines in portable devices from user-handling ESD events. IC Role / Device Role / Timing Role: Low-capacitance (typ. ~100 pF at 0 V) unidirectional TVS connected inline with signal traces to ground. Use Value: Provides ±15 kV air-gap ESD immunity without degrading signal integrity up to 100 MHz due to SlimSMA geometry and optimized junction design. |
Use Scenario: Secondary overvoltage clamp on 12 V DC input rails of embedded controllers after primary fuse and filter stage. IC Role / Device Role / Timing Role: Fast-acting crowbar element that activates within nanoseconds when input exceeds 10.5 V, diverting surge current to ground. Use Value: Limits rail overshoot to 15.6 V during 600 W transients, protecting downstream LDOs and microcontrollers rated for 16 V absolute max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A | Same DO-214AC package; higher VC = 18.2 V at 32.3 A; lower PPPM = 400 W; not AEC-Q101 qualified | Limited to commercial-grade industrial equipment; unsuitable for automotive under-hood use | Select SMAJ11A only if cost sensitivity outweighs automotive qualification and clamping voltage margin |
| 1.5SMC11A | DO-214AB package; larger footprint (7.11 × 6.22 mm); VC = 18.2 V at 32.3 A; PPPM = 1500 W; AEC-Q101 qualified | Requires PCB redesign; suited for high-energy transients where thermal mass matters more than height | Choose 1.5SMC11A when surge energy exceeds 600 W and board space allows larger case |
Compared with SMAJ11A and 1.5SMC11A, TA6F11AHM3/6A uniquely balances ultra-low profile (0.95 mm), AEC-Q101 compliance, and tight 15.6 V clamping-making it optimal for compact, automotive-grade signal-line protection where height and qualification are non-negotiable.
Availability
TA6F11AHM3/6A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial I/O terminals, and consumer port protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TA6F11AHM3/6A 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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The TA6F series belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for high-temperature stability and AEC-Q101-compliant automotive signal-line protection with minimal board footprint.
FAQ
What is the clamping voltage of TA6F11AHM3/6A at its rated peak pulse current?
The TA6F11AHM3/6A has a maximum clamping voltage (VC) of 15.6 V when subjected to its rated peak pulse current (IPPM) of 38.5 A under a 10/1000 μs waveform. This value is measured per the conditions specified in the Vishay datasheet Document Number 89939 and ensures downstream circuitry remains within safe operating limits during transient events. The TA6F11AHM3/6A maintains this clamping performance across its full operational temperature range.
Is TA6F11AHM3/6A suitable for automotive applications?
Yes, TA6F11AHM3/6A is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications such as engine control units, body electronics, and ADAS sensor interfaces. Its DO-221AC package meets MSL Level 1 and supports lead-free reflow up to 260 °C. The TA6F11AHM3/6A also complies with IEC 61000-4-2 Level 4 ESD requirements critical for automotive subsystems.
What is the standoff voltage (VWM) of TA6F11AHM3/6A, and why does it matter?
The standoff voltage (VWM) of TA6F11AHM3/6A is 9.40 V - the maximum continuous DC or RMS voltage the device can withstand without exceeding 2.0 μA reverse leakage at 25 °C. This parameter ensures reliable operation on 9–10 V nominal signal or power lines (e.g., automotive LIN bus) without false triggering. Exceeding VWM risks premature conduction and increased power loss; the TA6F11AHM3/6A's 9.40 V rating provides safe margin above common 9 V system rails.
Does TA6F11AHM3/6A have polarity markings, and how is it oriented on the PCB?
Yes, TA6F11AHM3/6A uses a cathode band marking on the DO-221AC package to indicate polarity. The banded end corresponds to the cathode terminal and must be connected to the protected line (e.g., signal or power rail), while the anode connects to ground. Incorrect orientation renders the device non-functional for unidirectional transient suppression. The TA6F11AHM3/6A's top-view silkscreen and mechanical drawings confirm this marking per Vishay's package outline documentation.
What is the thermal resistance of TA6F11AHM3/6A, and how does it affect layout?
The TA6F11AHM3/6A has a typical junction-to-ambient thermal resistance (RθJA) of 145 °C/W on FR-4 with minimum recommended pad layout, and 20 °C/W junction-to-mount (RθJM). These values guide PCB thermal design: adequate copper area under the cathode/anode pads improves heat dissipation during repetitive surges. For sustained high-power transients, mounting on a thermally enhanced pad or internal ground plane is recommended to avoid exceeding the 185 °C maximum junction temperature. The TA6F11AHM3/6A's RθJM confirms efficient heat transfer to the PCB substrate.
TA6F11AHM3/6A 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 38.5A
- 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)
TA6F11AHM3/6A FAQ
1.How can I place an order for TA6F11AHM3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F11AHM3/6A 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 TA6F11AHM3/6A reliable?
The price and inventory of TA6F11AHM3/6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F11AHM3/6A is usually 5 days.
3.What payment methods are accepted for TA6F11AHM3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F11AHM3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F11AHM3/6A?
TA6F11AHM3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F11AHM3/6A 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 TA6F11AHM3/6A?
For technical support, including TA6F11AHM3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F11AHM3/6A requirements.
6.How does Aetrix verify that TA6F11AHM3/6A is sourced from the original manufacturer or authorized distributors?
All TA6F11AHM3/6A 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 TA6F11AHM3/6A meets industry standards.
7.What is the process for return or replacement of TA6F11AHM3/6A?
All TA6F11AHM3/6A units undergo pre-shipment inspection (PSI). If there is an issue with TA6F11AHM3/6A, 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 TA6F11AHM3/6A part is unused and in its original packaging.
Return procedure for TA6F11AHM3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F11AHM3/6A Tags
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