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Vishay General Semiconductor - Diodes Division TA6F9.1AHM3_A/I
- Part No.:
- TA6F9.1AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F9.1AHM3_A/I.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,435
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Product details
Overview
TA6F9.1AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SlimSMA (DO-221AC) package, with 9.1 V breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), and 600 W peak pulse power (10/1000 μs). It delivers 44.8 V clamping voltage at 13.4 A peak pulse current and operates up to +185 °C junction temperature - designed for automotive sensor line protection against inductive switching transients.
For engineers reviewing the TA6F9.1AHM3_A/I datasheet, TA6F9.1AHM3_A/I pinout, TA6F9.1AHM3_A/I application, or TA6F9.1AHM3_A/I equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, thermal resistance values (RθJA = 120–150 °C/W), ESD immunity (30 kV IEC 61000-4-2), and SlimSMA mechanical dimensions - all confirmed per Vishay Document #89939 (Rev. 16-Jan-2025).
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable breakdown behavior under high-temperature stress (TJ = 185 °C) and supports automated SMT placement. Its unidirectional polarity and low-profile height (0.95 mm typical) enable compact layout in space-constrained automotive ECUs and ADAS sensor modules.
The device meets MSL Level 1 per J-STD-020 (260 °C reflow peak), features matte tin-plated terminals compliant with J-STD-002 and JESD22-B102, and passes JESD201 Class 2 whisker testing. Its thermal resistance junction-to-mount (RθJM) is 12–15 °C/W, enabling effective heat transfer to PCB copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 8.65 / 9.10 / 9.55 V at 1.0 mA - defines precise overvoltage triggering threshold for reliable circuit protection |
| VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 25 μA at 25 °C |
| VC @ IPPM | 44.8 V at 13.4 A - clamping voltage during 10/1000 μs surge ensures downstream ICs remain below safe operating limits |
| PPPM | 600 W (10/1000 μs) - surge energy handling capacity sufficient for ISO 7637-2 Pulse 1 & 2a in automotive environments |
| TJ max | +185 °C - enables operation in under-hood automotive locations without derating penalties |
| ESD Rating | ±30 kV contact/air per IEC 61000-4-2 - protects signal lines from human-body-model electrostatic discharge events |
| RθJA | 120–150 °C/W - determines required PCB copper area for thermal management at 8 W power dissipation (TM = 65 °C) |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Dimensions: 4.15–4.35 mm length × 2.50–2.70 mm width × 0.95 mm height (typical). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected line ground or low-side reference; forms cathode-to-anode clamping path during transient |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected signal line; absorbs surge energy when voltage exceeds VBR, shunting to ground via anode |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SlimSMA package | 0.95 mm typical height enables use in ultra-thin automotive modules and camera sensor assemblies |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JEDEC standards |
| Junction passivation design | Stable VBR drift < ±5 % after 1000 hrs at TJ = 150 °C - critical for long-life engine control units |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without moisture-induced popcorn failure |
| Halogen-free & RoHS-compliant | Meets automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1) |
Applications
| Automotive Sensor Protection | Powertrain Control Module Input Protection |
|---|---|
|
Use Scenario: Protecting LIN bus and analog sensor inputs (e.g., pressure, temperature) in ADAS radar modules from load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller input pin to clamp transients before they reach ADC or comparator inputs. Use Value: Clamps 13.4 A surges to ≤44.8 V while maintaining <25 μA leakage at 7.78 V - preserving signal integrity and preventing false triggers in safety-critical sensing. |
Use Scenario: Safeguarding microcontroller GPIOs and CAN transceiver power rails in transmission control units exposed to alternator ripple and relay switching noise. IC Role / Device Role / Timing Role: TVS deployed on 5 V or 3.3 V supply rails upstream of LDO regulators to absorb fast-rising spikes before regulation stage. Use Value: 600 W peak pulse rating and 185 °C junction capability ensure sustained protection across full vehicle operating temperature range (-40 °C to +125 °C ambient). |
| Infotainment Display Interface Protection | Electric Power Steering (EPS) Motor Driver Feedback Protection |
|
Use Scenario: Shielding MIPI DSI and I²C lines connecting infotainment head unit to TFT display from ESD events during service or environmental exposure. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector interface to suppress 30 kV contact discharge without distorting high-speed video signals. Use Value: 0.060 %/°C VBR tempco ensures consistent clamping threshold across cabin temperature swings (−40 °C to +85 °C), avoiding false trips or missed protection. |
Use Scenario: Protecting hall-effect position feedback lines from motor commutation noise and back-EMF coupling in EPS motor driver PCBs. IC Role / Device Role / Timing Role: TVS installed at motor controller board edge, bridging feedback signal line to chassis ground to divert high-frequency ringing. Use Value: SlimSMA footprint allows placement within 2 mm of connector, minimizing loop inductance and ensuring sub-10 ns response to 100 V/μs transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Higher VBR (8.55–9.45 V), same SlimSMA package, lower PPPM (400 W), no AEC-Q101 qualification | Limited to industrial/commercial grade systems; not approved for automotive safety-critical functions | Select SMAJ9.0A only if AEC-Q101 is not required and system surge energy stays below 400 W |
| SMCJ9.0A | Same VBR range, higher PPPM (1500 W), larger DO-214AB package (7.11 × 6.22 mm), RθJA ≈ 25 °C/W | Better thermal performance but incompatible with SlimSMA footprint; requires PCB redesign | Choose SMCJ9.0A when surge energy exceeds 600 W and board space permits larger package |
Compared with SMAJ9.0A and SMCJ9.0A, TA6F9.1AHM3_A/I uniquely combines AEC-Q101 qualification, 600 W surge rating, and SlimSMA footprint - making it the only drop-in solution for automotive signal-line protection where space, reliability, and qualification are jointly constrained.
Availability
TA6F9.1AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, powertrain control module input protection, and infotainment display interface protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TA6F9.1AHM3_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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and TVS devices, with emphasis on high-reliability, automotive-qualified components.
The TA6F series belongs to Vishay's PAR® family of surface-mount TVS diodes engineered specifically for automotive-grade transient suppression - optimized for AEC-Q101 compliance, high-temperature stability, and automated SMT assembly.
FAQ
What is the breakdown voltage tolerance for TA6F9.1AHM3_A/I?
The TA6F9.1AHM3_A/I has a guaranteed breakdown voltage range of 8.65 V (min) to 9.55 V (typical 9.10 V) at 1.0 mA test current, per Vishay Document #89939. This ±5 % tolerance ensures predictable clamping onset across production lots and temperature extremes, supporting robust design margining in automotive applications.
Is TA6F9.1AHM3_A/I qualified to AEC-Q101?
Yes, TA6F9.1AHM3_A/I is explicitly AEC-Q101 qualified, as stated in the "Features" section and "Ordering Information" table of Vishay Document #89939. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD - confirming suitability for automotive electronic control units.
What is the maximum clamping voltage of TA6F9.1AHM3_A/I at rated surge current?
The TA6F9.1AHM3_A/I clamps to 44.8 V at its rated peak pulse current of 13.4 A (10/1000 μs waveform), as specified in the "Electrical Characteristics" table. This value defines the upper voltage limit imposed on protected circuitry during worst-case transients, enabling accurate downstream IC voltage rail selection.
Does TA6F9.1AHM3_A/I meet JEDEC MSL Level 1?
Yes, TA6F9.1AHM3_A/I meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. This allows unlimited floor life and single-pass reflow soldering without baking - essential for high-throughput automotive PCB assembly lines using lead-free processes.
What is the thermal resistance junction-to-ambient for TA6F9.1AHM3_A/I?
The TA6F9.1AHM3_A/I has a typical RθJA of 120 °C/W and a maximum of 150 °C/W, measured per JEDEC 51-2A on FR4 PCB with standard 2 oz. copper footprint. This value guides minimum pad size and copper pour design to maintain TJ ≤ 185 °C under 8 W steady-state power dissipation.
TA6F9.1AHM3_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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 44.8A
- 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)
TA6F9.1AHM3_A/I FAQ
1.How can I place an order for TA6F9.1AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F9.1AHM3_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 TA6F9.1AHM3_A/I reliable?
The price and inventory of TA6F9.1AHM3_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 TA6F9.1AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TA6F9.1AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F9.1AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F9.1AHM3_A/I?
TA6F9.1AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F9.1AHM3_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 TA6F9.1AHM3_A/I?
For technical support, including TA6F9.1AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F9.1AHM3_A/I requirements.
6.How does Aetrix verify that TA6F9.1AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TA6F9.1AHM3_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 TA6F9.1AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TA6F9.1AHM3_A/I?
All TA6F9.1AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TA6F9.1AHM3_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 TA6F9.1AHM3_A/I part is unused and in its original packaging.
Return procedure for TA6F9.1AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F9.1AHM3_A/I Tags
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Diodes Incorporated
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