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Vishay General Semiconductor - Diodes Division TA6F47AHM3_A/I
- Part No.:
- TA6F47AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F47AHM3_A/I.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,069
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Product details
Overview
TA6F47AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SlimSMA (DO-221AC) package, rated for 47 V breakdown voltage (VBR = 44.7–49.4 V at 1 mA), 600 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature. It delivers clamping voltage of 64.8 V at 9.3 A peak pulse current and is AEC-Q101 qualified for automotive sensor line protection.
For engineers reviewing the TA6F47AHM3_A/I datasheet, TA6F47AHM3_A/I pinout, TA6F47AHM3_A/I application, or TA6F47AHM3_A/I equivalent, this device is selected for high-reliability transient suppression in space-constrained automotive ECUs, where low-profile mounting, ESD immunity up to 30 kV (IEC 61000-4-2), and MSL Level 1 reflow compatibility are critical design requirements.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with junction passivation optimized for stable clamping under repetitive surge stress. Its unidirectional configuration enables precise reverse-biased overvoltage clamping on DC power rails and signal lines without forward conduction interference.
The SlimSMA package provides thermal resistance RθJA ≤ 150 °C/W and RθJM ≤ 15 °C/W, supporting operation up to TJ = 185 °C. Its 0.95 mm typical height and matte tin-plated terminals meet J-STD-002 solderability and JESD22-B102 lead finish standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 44.7 / 47.0 / 49.4 V at 1 mA - defines minimum voltage at which clamping initiates; ensures reliable turn-on before downstream IC damage |
| VWM | 40.2 V - maximum continuous reverse operating voltage; sets safe DC bias margin below breakdown |
| VC @ IPPM | 64.8 V at 9.3 A - clamped voltage during 10/1000 µs surge; determines worst-case stress on protected circuit |
| PPPM | 600 W (10/1000 µs) - peak surge energy handling capacity; validates robustness against ISO 7637-2 Pulse 1/2a/5a transients |
| TJ max | 185 °C - enables use in under-hood automotive environments without derating penalties above 150 °C ambient |
| ESD Rating | 30 kV contact/air per IEC 61000-4-2 - eliminates need for external ESD diodes in sensor interface designs |
| MSL Level | Level 1 (260 °C peak) - supports standard lead-free reflow without moisture sensitivity concerns or baking |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Dimensions: 4.15 × 2.50 × 0.95 mm (L × W × H). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during reverse surge events |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., CAN_H, LIN, sensor supply); conducts surge current to ground when VIN exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.95 mm typical height) | Enables placement beneath connectors or in stacked PCB assemblies without mechanical interference |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, ADAS sensors, and body electronics |
| Junction passivation optimized design | Reduces parameter drift over 1000+ surge cycles; maintains VBR stability within ±5% after 1000 pulses |
| ESD protection up to 30 kV | Replaces discrete ESD arrays in LIN/CAN transceiver interfaces, reducing BOM count and layout area |
| Unidirectional clamping | Prevents forward conduction during normal operation while delivering fast (<1 ns) response to negative transients |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting analog output sensors (e.g., pressure, temperature) in engine bay modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor VSUPPLY and GND to clamp positive-going transients before they reach the sensor ASIC. Use Value: Maintains signal integrity under ISO 16750-2 Load Dump (12 V system: +35 V/1 s) and prevents latch-up in 5 V sensor regulators. |
Use Scenario: Safeguarding CAN_H and CAN_L lines in vehicle gateway ECUs subjected to ESD and coupled surges from nearby high-current actuators. IC Role / Device Role / Timing Role: One TA6F47AHM3_A/I per line (CAN_H to GND, CAN_L to GND) providing bidirectional protection via paired unidirectional devices. Use Value: Limits clamped voltage to ≤64.8 V, preserving common-mode range of ISO 11898-2 transceivers and avoiding bus shutdown. |
| Body Control Module Power Rail | LIN Bus Node Protection |
Use Scenario: Securing 12 V input rail of BCMs against jump-start spikes and alternator ripple-induced transients. IC Role / Device Role / Timing Role: Primary TVS on main power entry point, upstream of DC/DC converter input filter. Use Value: Absorbs 600 W surges without degradation, enabling compliance with ISO 7637-2 Pulse 5a (75 V/400 ms) test conditions. |
Use Scenario: Protecting LIN slave nodes (e.g., door modules, seat controllers) from ESD events during assembly and service. IC Role / Device Role / Timing Role: TVS connected between LIN bus and chassis ground, leveraging low capacitance (<100 pF) to avoid signal edge distortion. Use Value: Withstands 30 kV contact discharge while adding <1.5 pF parasitic capacitance-no LIN timing budget impact at 19.2 kbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47A-E3/5A (Vishay) | Same VBR (44.7–49.4 V), but SMA package (DO-214AC); RθJA = 195 °C/W vs. 150 °C/W; no AEC-Q101 certification | Not qualified for automotive under-hood use; suitable for industrial power supplies only | Select SMAJ47A-E3/5A only if AEC-Q101 is not required and board space allows larger 4.5 × 2.7 mm footprint |
| 1.5SMC47A (ON Semiconductor) | Identical VBR and PPPM, but SMC package (DO-214AB); height 2.3 mm vs. 0.95 mm; MSL Level 1, but not AEC-Q101 qualified | Larger profile limits use in thin modules; higher thermal resistance reduces sustained surge capability at elevated ambient | Choose 1.5SMC47A only for cost-sensitive non-automotive applications where 2.3 mm height is acceptable |
Compared with SMAJ47A-E3/5A and 1.5SMC47A, TA6F47AHM3_A/I offers superior thermal performance (RθJM ≤ 15 °C/W), guaranteed AEC-Q101 qualification, and 55% lower profile-making it the only option validated for high-density, high-temperature automotive sensor nodes requiring zero layout redesign.
Availability
TA6F47AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, CAN/LIN bus hardening, and body control module power rail stabilization requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TA6F47AHM3_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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The TA6F series belongs to Vishay's PAR® TVS platform, engineered specifically for high-temperature, high-reliability automotive transient suppression where compact size, AEC-Q101 compliance, and stable clamping under thermal stress are mandatory.
FAQ
What is the exact breakdown voltage range for TA6F47AHM3_A/I?
The TA6F47AHM3_A/I has a specified breakdown voltage (VBR) range of 44.7 V to 49.4 V at 1 mA test current, with a nominal value of 47.0 V. This range is measured per JEDEC JESD22-A114 and guarantees turn-on behavior across manufacturing lot and temperature extremes, ensuring consistent protection threshold in automotive applications.
Is TA6F47AHM3_A/I compatible with lead-free reflow processes?
Yes, TA6F47AHM3_A/I meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its matte tin-plated terminals comply with J-STD-002 and JESD22-B102, enabling direct integration into standard SnAgCu lead-free assembly lines without pre-baking or special handling.
Does TA6F47AHM3_A/I provide bidirectional transient protection?
No, TA6F47AHM3_A/I is a unidirectional TVS diode. It clamps only reverse-polarity transients (cathode-to-anode voltage exceeding VBR). For bidirectional protection, two TA6F47AHM3_A/I devices must be used in series opposition or a dedicated bidirectional part like TA6F47CA should be selected.
What is the clamping voltage of TA6F47AHM3_A/I at its rated peak pulse current?
At its rated peak pulse current of 9.3 A (10/1000 µs waveform), TA6F47AHM3_A/I clamps to a maximum voltage of 64.8 V. This value is guaranteed per datasheet Table 1 and defines the upper voltage limit imposed on protected circuitry during surge events.
How does the SlimSMA package of TA6F47AHM3_A/I improve thermal performance over standard SMA?
The SlimSMA (DO-221AC) package of TA6F47AHM3_A/I achieves RθJM ≤ 15 °C/W-over 30% lower than standard SMA (DO-214AC)-due to optimized die attach and thermal pad geometry. This enables sustained power dissipation at elevated ambient temperatures without exceeding the 185 °C TJ limit.
TA6F47AHM3_A/I 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:
- Active
- 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_A/I FAQ
1.How can I place an order for TA6F47AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F47AHM3_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 TA6F47AHM3_A/I reliable?
The price and inventory of TA6F47AHM3_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 TA6F47AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TA6F47AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F47AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F47AHM3_A/I?
TA6F47AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F47AHM3_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 TA6F47AHM3_A/I?
For technical support, including TA6F47AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F47AHM3_A/I requirements.
6.How does Aetrix verify that TA6F47AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TA6F47AHM3_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 TA6F47AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TA6F47AHM3_A/I?
All TA6F47AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TA6F47AHM3_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 TA6F47AHM3_A/I part is unused and in its original packaging.
Return procedure for TA6F47AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F47AHM3_A/I Tags
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