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Vishay General Semiconductor - Diodes Division TA6F47AHM3/6A
- Part No.:
- TA6F47AHM3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F47AHM3/6A.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,201
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Product details
Overview
TA6F47AHM3/6A from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and ESD events on power/signal lines. It features a 44.7–49.4 V breakdown voltage (VBR), 40.2 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), 64.8 V maximum clamping voltage (VC) at 9.3 A, and operates up to +185 °C junction temperature - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the TA6F47AHM3/6A datasheet, TA6F47AHM3/6A pinout, TA6F47AHM3/6A application, or TA6F47AHM3/6A equivalent, key selection criteria include unidirectional polarity, DO-221AC (SlimSMA) package compatibility, AEC-Q101 qualification, IEC 61000-4-2 Level 4 ESD rating (±15 kV air / ±8 kV contact), and thermal resistance (RθJA = 145 °C/W).
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive transients while maintaining low leakage (<1 μA at VWM) and high-temperature reliability (TJ = 185 °C). Its DO-221AC package enables automated placement and meets MSL Level 1 with 260 °C reflow peak.
The device is optimized for fast response to sub-microsecond transients, with typical junction capacitance <100 pF at zero bias and clamping performance validated per IEC 61000-4-5 surge immunity standards. It is not intended for bidirectional protection or AC line applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V - ensures reliable turn-on above system operating voltage (e.g., 36 V nominal automotive rails) |
| VWM | 40.2 V - maximum continuous reverse working voltage without significant leakage |
| VC @ IPPM | 64.8 V at 9.3 A - limits downstream IC voltage during 10/1000 μs surge to safe levels |
| PPPM | 600 W - handles high-energy transients common in motor drivers and solenoid controls |
| TJ max | +185 °C - supports under-hood automotive environments and high-power industrial enclosures |
| ESD Rating | IEC 61000-4-2 Level 4: ±15 kV air / ±8 kV contact - protects against human-body model discharges |
| RθJA | 145 °C/W - defines thermal derating on standard FR-4 PCB with minimum pad layout |
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. Matte tin-plated terminals, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lower-potential rail; completes clamping path during overvoltage |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., CAN_H, sensor VCC, MCU I/O); absorbs positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Uni-directional clamping | Enables precise protection of DC-biased signal/power lines without affecting normal forward conduction |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| DO-221AC mechanical profile | 0.95 mm typical height allows use in space-constrained modules (e.g., ADAS ECUs, battery management sensors) |
| Junction passivation design | Reduces parameter drift and leakage under high humidity and thermal aging (TJ = 150 °C, 1000 hrs) |
| MSL Level 1 rating | Permits standard SMT reflow without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground, clamping transients within nanoseconds before IC damage occurs. Use Value: Maintains signal integrity during 10/1000 μs surges up to 600 W while surviving 185 °C ambient under-hood conditions. |
Use Scenario: Safeguarding PLC digital input channels and RS-485 transceivers against field-induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing inductive kickback from relay coils and solenoids connected to same bus. Use Value: Limits clamped voltage to ≤64.8 V at 9.3 A, preventing latch-up or gate oxide rupture in 24 V control logic. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
|
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters and wireless charging controllers exposed to ESD and fast transients. IC Role / Device Role / Timing Role: Low-capacitance TVS on 5–20 V output rails, placed adjacent to DC-DC converter outputs and USB ports. Use Value: Delivers ±15 kV air-gap ESD immunity without adding >100 pF parasitic capacitance that would degrade high-speed signaling. |
Use Scenario: Front-end surge protection for Ethernet PHYs and POTS line interface units in telecom access equipment. IC Role / Device Role / Timing Role: Primary-level TVS on twisted-pair inputs, coordinated with GDTs or MOVs for multi-stage protection. Use Value: Withstands repeated 10/1000 μs surges per IEC 61000-4-5 while maintaining <1 μA leakage at 40.2 V standby. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A | Higher VBR (47.8–52.8 V), same DO-214AA package, 600 W rating, but RθJA = 170 °C/W and TJ max = 150 °C | Limited to non-automotive industrial use due to lower temperature rating and no AEC-Q101 qualification | Select when cost sensitivity outweighs under-hood operation or long-term thermal stability requirements |
| SMCJ43A | Same VWM/VBR range, higher PPPM = 1500 W, DO-214AB package (larger footprint), TJ max = 175 °C, AEC-Q101 qualified | Requires PCB redesign for larger 7.11 × 6.22 mm body; suited for higher-energy surge zones (e.g., main power entry) | Choose when system-level surge testing exceeds 600 W or coordination with upstream protectors demands higher energy handling |
Compared with SMBJ45A and SMCJ43A, the TA6F47AHM3/6A offers optimal balance of compact DO-221AC footprint, AEC-Q101 compliance, and 185 °C capability - making it uniquely suitable for space-limited, high-reliability automotive and industrial edge nodes where thermal margin and qualification are non-negotiable.
Availability
TA6F47AHM3/6A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface units requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TA6F47AHM3/6A 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 TA6F47AHM3/6A belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for robust transient suppression in harsh-environment applications demanding AEC-Q101 qualification and extended temperature operation.
FAQ
What is the exact breakdown voltage range specified for TA6F47AHM3/6A?
The TA6F47AHM3/6A has a guaranteed breakdown voltage (VBR) range of 44.7 V to 49.4 V at 1.0 mA test current, measured per the Vishay datasheet Document Number 89939. This range ensures consistent turn-on behavior across production lots and supports reliable coordination with downstream overvoltage thresholds in systems like 36 V automotive electronics. The TA6F47AHM3/6A maintains this specification under standard test conditions (TA = 25 °C).
Is TA6F47AHM3/6A suitable for bidirectional transient protection?
No, the TA6F47AHM3/6A is strictly unidirectional and must be used with correct polarity - cathode connected to the protected line, anode to ground. It does not provide clamping for negative-going transients. For bidirectional protection, a separate device such as the TA6F47CA or a dedicated bidirectional TVS array is required. The TA6F47AHM3/6A datasheet explicitly states "Uni-directional only" under Features.
Does TA6F47AHM3/6A meet automotive qualification standards?
Yes, the TA6F47AHM3/6A is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 18-Apr-16 (Document Number 89939). This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114. The TA6F47AHM3/6A is rated for junction temperatures up to +185 °C, exceeding standard automotive under-hood requirements.
What is the maximum clamping voltage of TA6F47AHM3/6A at its rated peak pulse current?
The TA6F47AHM3/6A exhibits a maximum clamping voltage (VC) of 64.8 V at its rated peak pulse current (IPPM) of 9.3 A, tested with a 10/1000 μs waveform. This value is critical for ensuring protected ICs remain below absolute maximum ratings during surge events. The TA6F47AHM3/6A achieves this clamping performance while maintaining low leakage (<1 μA at 40.2 V) at room temperature.
What packaging format is used for TA6F47AHM3/6A, and what does the "6A" suffix indicate?
The TA6F47AHM3/6A is supplied in 7-inch plastic tape and reel format, with "6A" denoting the preferred package code per Vishay's ordering information. The base part number TA6F47AHM3 indicates halogen-free, RoHS-compliant construction in the DO-221AC (SlimSMA) package. The "6A" suffix specifies a 3500-unit reel quantity and 7″ reel diameter - distinct from "6B" (14,000 units, 13″ reel) or "H"/"I" variants.
TA6F47AHM3/6A 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- 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)
TA6F47AHM3/6A FAQ
1.How can I place an order for TA6F47AHM3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F47AHM3/6A 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 TA6F47AHM3/6A reliable?
The price and inventory of TA6F47AHM3/6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F47AHM3/6A is usually 5 days.
3.What payment methods are accepted for TA6F47AHM3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F47AHM3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F47AHM3/6A?
TA6F47AHM3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F47AHM3/6A 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 TA6F47AHM3/6A?
For technical support, including TA6F47AHM3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F47AHM3/6A requirements.
6.How does Aetrix verify that TA6F47AHM3/6A is sourced from the original manufacturer or authorized distributors?
All TA6F47AHM3/6A 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 TA6F47AHM3/6A meets industry standards.
7.What is the process for return or replacement of TA6F47AHM3/6A?
All TA6F47AHM3/6A units undergo pre-shipment inspection (PSI). If there is an issue with TA6F47AHM3/6A, 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 TA6F47AHM3/6A part is unused and in its original packaging.
Return procedure for TA6F47AHM3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F47AHM3/6A Tags
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