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Vishay General Semiconductor - Diodes Division TA6F47AHM3_A/H
- Part No.:
- TA6F47AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F47AHM3_A/H.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,400
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Product details
Overview
TA6F47AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SlimSMA (DO-221AC) package, with 47 V breakdown voltage (VBR = 44.7–49.4 V), 40.2 V stand-off voltage (VWM), and 600 W peak pulse power (10/1000 μs). It delivers 9.3 V clamping voltage at 64.8 A peak surge current and operates up to 185 °C junction temperature - designed for automotive sensor line protection against load dump and ESD.
For engineers reviewing the TA6F47AHM3_A/H datasheet, TA6F47AHM3_A/H pinout, TA6F47AHM3_A/H application, or TA6F47AHM3_A/H equivalent, this device requires attention to unidirectional polarity marking, MSL Level 1 reflow compatibility, AEC-Q101 qualification, IEC 61000-4-2 ±30 kV ESD rating, and thermal derating above 25 °C ambient.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under repetitive transients while maintaining low leakage (<1 μA at VWM) and high-temperature reliability up to TJ = 185 °C. Its SlimSMA package enables automated placement on space-constrained PCBs with minimal height (0.95 mm typical).
The device features a defined cathode band for polarity identification, matte tin-plated terminals compliant with J-STD-002 and JESD22-B102, and meets JEDEC J-STD-020 MSL Level 1 (260 °C peak reflow). Thermal resistance is RθJA = 120–150 °C/W (FR4, minimum pad layout).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 44.7 / 47.0 / 49.4 V - ensures reliable conduction onset above system operating voltage while avoiding false triggering |
| VWM | 40.2 V - maximum continuous reverse voltage before significant leakage; compatible with 36 V automotive supply rails |
| VC @ IPPM | 9.3 V at 64.8 A - clamps induced surges to safe levels for downstream 12 V logic or analog ICs |
| PPPM (10/1000 μs) | 600 W - handles high-energy transients such as ISO 7637-2 Pulse 5a without degradation |
| TJ max | 185 °C - supports under-hood automotive environments without thermal shutdown or parameter drift |
| ESD Rating | ±30 kV contact/air per IEC 61000-4-2 - protects CAN/LIN bus nodes and sensor interfaces from human-body-model events |
| Package | SlimSMA (DO-221AC) - 0.95 mm profile enables placement near connectors or sensors on dense automotive PCBs |
Pinout & Package
SlimSMA (DO-221AC) package: surface-mount, unidirectional, cathode marked by color band on top surface. Dimensions: 4.15–4.35 mm length × 2.50–2.70 mm width × 0.95 mm height. Matte tin-plated terminals meet J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; forms clamping loop with cathode |
| Cathode | High-side transient input terminal | Connected to protected signal line; color band identifies polarity for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per AEC standard |
| Junction passivation | Reduces surface leakage and improves long-term stability under high humidity and bias conditions |
| MSL Level 1 | Enables single-pass 260 °C reflow without popcorn effect or delamination - no baking required pre-assembly |
| 0.95 mm profile | Minimizes board space and mechanical interference in tight-fit modules like ADAS camera housings or ECUs |
| Halogen-free & RoHS | Complies with automotive material restrictions (per Vishay doc #99912) and end-of-life recycling requirements |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting wheel speed, pressure, or temperature sensor outputs in engine bay or chassis modules exposed to load switching and alternator ripple. IC Role / Device Role: Unidirectional TVS placed between sensor output line and ground to clamp fast-rising transients before reaching ADC or microcontroller input. Use Value: Prevents latch-up or damage to 3.3 V/5 V sensor interface ICs during ISO 7637-2 Pulse 1 (inductive kick) and Pulse 5a (load dump). |
Use Scenario: Safeguarding CAN_H/CAN_L lines in body control modules or gateway ECUs subjected to ESD and conducted noise. IC Role / Device Role: Paired unidirectional TVS devices (one per line) referenced to ground, providing low-capacitance (<100 pF) clamping without signal integrity loss. Use Value: Maintains CAN FD bit timing integrity while suppressing ±30 kV ESD events and 600 W surge pulses per ISO 16750-2. |
| Industrial Motor Drive Feedback Lines | Automotive Lighting Control Inputs |
Use Scenario: Shielding encoder or Hall-effect feedback signals in BLDC motor drives where PWM switching induces ground bounce and crosstalk. IC Role / Device Role: TVS mounted at connector entry point to absorb coupled transients before reaching isolation barrier or MCU GPIO. Use Value: Enables robust operation at TJ = 150 °C ambient with <1 μA leakage at 40.2 V, preserving signal fidelity over lifetime. |
Use Scenario: Protecting LIN or PWM dimming inputs on LED headlamp drivers exposed to battery disconnect transients and jump-start spikes. IC Role / Device Role: Standoff-rated TVS on low-voltage control line (e.g., 12 V LIN bus) to prevent false commands or driver latch-up. Use Value: Clamps 64.8 A surges to ≤9.3 V within nanoseconds, ensuring uninterrupted communication during 24 V cold-crank events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47A-E3/5A (Vishay) | Same VBR range (44.7–49.4 V), but SMA package (1.6 mm height) and lower PPPM = 400 W | Larger footprint and higher profile limit use in ultra-thin modules; less suitable for high-density automotive layouts | Select when cost sensitivity outweighs space constraints and 400 W surge rating suffices |
| TPSMF47A (STMicroelectronics) | Identical SlimSMA package and VBR/VC specs, but rated for 175 °C TJ max and lacks AEC-Q101 documentation | Not certified for automotive qualification programs requiring full AEC-Q101 test reports | Prefer for industrial applications where 175 °C suffices and automotive compliance is not mandated |
Compared with SMAJ47A-E3/5A and TPSMF47A, the TA6F47AHM3_A/H provides the only combination of SlimSMA form factor, 600 W surge rating, 185 °C operation, and full AEC-Q101 qualification - making it the preferred choice for next-generation automotive sensor nodes requiring zero-layout-change upgrades.
Availability
TA6F47AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, CAN/LIN bus hardening, and industrial motor feedback line safeguarding requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TA6F47AHM3_A/H 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, rectifiers, and TVS devices, with emphasis on high-reliability, automotive-qualified components meeting global safety and environmental standards.
The TA6F47AHM3_A/H belongs to the PAR® series of surface-mount TVS diodes engineered specifically for automotive-grade transient suppression under extreme thermal and mechanical stress - targeting under-hood, ADAS, and electrified powertrain systems.
FAQ
What is the clamping voltage of the TA6F47AHM3_A/H at its rated peak pulse current?
The TA6F47AHM3_A/H has a maximum clamping voltage (VC) of 9.3 V at its specified peak pulse current (IPPM) of 64.8 A under a 10/1000 μs waveform. This value is measured per the test conditions defined in Vishay document 89939 and ensures downstream 12 V or 5 V circuitry remains within safe operating limits during surge events. The TA6F47AHM3_A/H maintains this clamping performance across its full operating temperature range.
Is the TA6F47AHM3_A/H suitable for use in automotive applications requiring AEC-Q101 qualification?
Yes, the TA6F47AHM3_A/H is explicitly AEC-Q101 qualified per Vishay document 89939, with full test reports covering HTGB, HTRB, temperature cycling, and ESD. It is approved for automotive applications including engine control units, body electronics, and ADAS sensor modules. The TA6F47AHM3_A/H meets all stress requirements for under-hood deployment up to 185 °C junction temperature.
What does the "HM3_A/H" suffix indicate in TA6F47AHM3_A/H?
The "HM3" denotes the SlimSMA (DO-221AC) package variant with halogen-free, RoHS-compliant molding compound; "A" is the revision code; "H" specifies the packaging format: 7-inch plastic tape and reel with 3500 units per reel. This ordering code aligns with Vishay's standardized nomenclature in document 89939 and ensures correct procurement of the qualified, automotive-grade version of the TA6F47AHM3_A/H.
How does the TA6F47AHM3_A/H perform under high-temperature operating conditions?
The TA6F47AHM3_A/H is rated for continuous operation up to 185 °C junction temperature, with VBR exhibiting a temperature coefficient of +0.092 %/°C. Its thermal resistance RθJA is 120–150 °C/W on FR4 with minimum pad layout, enabling stable clamping performance in under-hood environments. Derating curves in Vishay doc 89939 confirm usable power dissipation down to 50% at 125 °C ambient - critical for TA6F47AHM3_A/H deployment in ECU modules.
Does the TA6F47AHM3_A/H meet industry-standard ESD immunity requirements?
Yes, the TA6F47AHM3_A/H is rated for ±30 kV ESD protection per IEC 61000-4-2 (contact and air discharge), verified per Vishay's internal testing and documented in specification sheet 89939. This level exceeds common automotive EMC requirements for sensor and communication interfaces. The TA6F47AHM3_A/H achieves this without compromising leakage (<1 μA at VWM) or clamping response time, making it suitable for protecting high-impedance analog inputs.
TA6F47AHM3_A/H 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/H FAQ
1.How can I place an order for TA6F47AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F47AHM3_A/H 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/H reliable?
The price and inventory of TA6F47AHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for TA6F47AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F47AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F47AHM3_A/H?
TA6F47AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F47AHM3_A/H 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/H?
For technical support, including TA6F47AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F47AHM3_A/H requirements.
6.How does Aetrix verify that TA6F47AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TA6F47AHM3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of TA6F47AHM3_A/H?
All TA6F47AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TA6F47AHM3_A/H, 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/H part is unused and in its original packaging.
Return procedure for TA6F47AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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