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Vishay General Semiconductor - Diodes Division TA6F43AHM3/6B
- Part No.:
- TA6F43AHM3/6B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F43AHM3/6B.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,798
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Product details
Overview
TA6F43AHM3/6B from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and ESD transients on signal lines and power rails. It features a breakdown voltage of 40.9–45.2 V at 1 mA, clamps to ≤59.3 V at 10.1 A (10/1000 μs), delivers 600 W peak pulse power, and operates up to +185 °C junction temperature - ideal for automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the TA6F43AHM3/6B datasheet, TA6F43AHM3/6B pinout, TA6F43AHM3/6B application, or TA6F43AHM3/6B equivalent, key selection criteria include its DO-221AC (SlimSMA) package footprint, AEC-Q101 qualification, 15 kV air/8 kV contact ESD immunity per IEC 61000-4-2 Level 4, and verified clamping performance under repetitive surge stress at elevated ambient temperatures.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low-leakage operation. Its unidirectional architecture provides precise reverse-biased clamping with tight VBR tolerance (±5%) and low dynamic impedance, enabling fast response (<1 ns) to transients while maintaining <1.0 μA leakage at 36.8 V (VWM) and TJ = 150 °C.
The device is rated for 600 W peak pulse power (10/1000 μs), derated linearly above 25 °C ambient, and achieves thermal resistance of 145 °C/W (junction-to-ambient, FR-4 board) and 20 °C/W (junction-to-mount). Its SlimSMA package supports automated placement and meets MSL Level 1 reflow (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1 mA - defines reliable turn-on threshold for overvoltage clamping |
| VWM | 36.8 V - maximum continuous reverse operating voltage before significant leakage |
| VC @ IPPM | ≤59.3 V at 10.1 A (10/1000 μs) - ensures protected circuit stays below safe voltage limits during surge |
| PPPM | 600 W (10/1000 μs) - sustains high-energy transients without failure in automotive/industrial environments |
| TJ max | +185 °C - enables use in under-hood automotive modules and high-temperature industrial enclosures |
| ESD Rating | IEC 61000-4-2 Level 4: ±15 kV (air), ±8 kV (contact) - protects against human-body-model discharge events |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and UHAST |
Pinout & Package
Package: DO-221AC (SlimSMA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals. Cathode denoted by color band. 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 | Forward conduction terminal | Connected to lower-potential side (e.g., GND or signal return) in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., CAN_H, sensor VOUT, MCU I/O); color band identifies this end |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.95 mm height) | Enables integration into space-constrained PCB layouts, especially near connectors and sensors |
| Junction passivation optimized design | Reduces long-term parametric drift and leakage growth under thermal/humidity stress |
| Uni-directional only | Simplifies layout and eliminates need for bidirectional symmetry; suited for DC-biased signal/power lines |
| Peak pulse power: 600 W (10/1000 μs) | Withstands repeated load-dump and inductive kick events common in 12 V/24 V automotive systems |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture-related popcorning or delamination |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loop transmitters) and digital sensor outputs (e.g., Hall-effect, temperature) from load dump and ESD in engine control units and body electronics. IC Role / Device Role: Unidirectional TVS placed between signal line and ground, clamping transients before they reach downstream ADCs or microcontroller pins. Use Value: Prevents latch-up and permanent damage in precision sensor front-ends while maintaining signal integrity due to low capacitance and tight VBR tolerance. |
Use Scenario: Safeguarding RS-485/RS-422 differential data lines and PLC digital input channels exposed to field wiring surges and lightning-induced coupling. IC Role / Device Role: Line-side TVS mounted directly at connector entry point, shunting surge energy to chassis or signal ground. Use Value: Ensures system-level EMC compliance (IEC 61000-4-4/5) and extends mean time between failures (MTBF) in harsh factory-floor environments. |
| Consumer Power Adapter Input | Telecom DC Power Rail |
|
Use Scenario: Clamping inrush and surge transients on primary-side 12 V/19 V DC inputs of USB-C PD adapters and smart home hubs. IC Role / Device Role: Secondary-stage TVS after input fuse and filter, providing final overvoltage defense before DC-DC converters. Use Value: Eliminates need for larger, more expensive MOVs while delivering faster response and tighter clamping than varistors. |
Use Scenario: Protecting -48 V telecom power distribution boards from hot-swap transients and battery backup switching spikes. IC Role / Device Role: Unidirectional clamp referenced to negative rail, absorbing positive-going surges on the supply line. Use Value: Maintains uninterrupted service during redundant power switchover and prevents false resets in base station control logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/57T | Higher VBR (40.9–45.4 V), same DO-214AC package, but lower PPPM (400 W) and no AEC-Q101 qualification | Limited to commercial-grade industrial equipment; not suitable for automotive under-hood use | Select when cost sensitivity outweighs automotive qualification and higher surge margin is unnecessary |
| SMCJ43A | Same VBR range, higher PPPM (1500 W), but larger DO-214AB package (7.11 mm × 6.22 mm) and 2.3 mm height | Requires PCB area increase and may conflict with adjacent components or enclosure clearance | Choose only if system-level surge test requirements exceed 600 W and board space permits larger footprint |
Compared with SMAJ43A-E3/57T and SMCJ43A, TA6F43AHM3/6B uniquely balances AEC-Q101 qualification, SlimSMA form factor, and 600 W surge capability - making it optimal for space-constrained automotive and industrial designs where reliability and footprint are co-prioritized.
Availability
TA6F43AHM3/6B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, consumer power adapter inputs, and telecom DC power distribution requiring stable component supply across multi-year production cycles.
Supply support for TA6F43AHM3/6B 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, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability, high-temperature, and automotive-qualified solutions.
The TA6F series is part of Vishay's PAR® (Precision Avalanche Rectifier) TVS platform, engineered specifically for robust transient suppression in automotive and industrial environments where extended temperature operation and AEC-Q101 compliance are mandatory.
FAQ
What is the exact breakdown voltage range for TA6F43AHM3/6B?
The TA6F43AHM3/6B has a guaranteed breakdown voltage (VBR) range of 40.9 V to 45.2 V at 1 mA test current, measured per JEDEC standards. This tight ±5% tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage protection design in safety-critical circuits like automotive sensor interfaces.
Is TA6F43AHM3/6B qualified for automotive applications?
Yes, TA6F43AHM3/6B is AEC-Q101 qualified and manufactured in Vishay's certified automotive production lines. It passes stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (UHAST), confirming suitability for under-hood and body-control module applications.
What does the "HM3/6B" suffix indicate in TA6F43AHM3/6B?
The "HM3" denotes halogen-free, RoHS-compliant construction with matte tin plating and JESD201 Class 2 whisker resistance. The "6B" specifies packaging: 14,000 units per 13-inch plastic tape-and-reel - distinct from "6A" (3,500 units on 7-inch reel) and ensuring compatibility with high-volume SMT pick-and-place equipment.
How does TA6F43AHM3/6B compare to standard SMAJ43A in terms of surge handling?
TA6F43AHM3/6B delivers 600 W peak pulse power (10/1000 μs), whereas SMAJ43A is rated at 400 W. Both share similar VBR and VC, but TA6F43AHM3/6B's higher surge rating and AEC-Q101 qualification make it preferable for automotive and industrial applications demanding extended surge endurance and qualification traceability.
Can TA6F43AHM3/6B be used in bidirectional configurations?
No - TA6F43AHM3/6B is unidirectional only, as confirmed in the Vishay datasheet. It conducts in forward bias and clamps in reverse bias. For bidirectional protection (e.g., AC lines or differential buses), two TA6F43AHM3/6B devices must be connected in series opposition, or a dedicated bidirectional TVS such as SMBJ43CA should be selected instead.
TA6F43AHM3/6B 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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.1A
- 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)
TA6F43AHM3/6B FAQ
1.How can I place an order for TA6F43AHM3/6B through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F43AHM3/6B 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 TA6F43AHM3/6B reliable?
The price and inventory of TA6F43AHM3/6B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F43AHM3/6B is usually 5 days.
3.What payment methods are accepted for TA6F43AHM3/6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F43AHM3/6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F43AHM3/6B?
TA6F43AHM3/6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F43AHM3/6B 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 TA6F43AHM3/6B?
For technical support, including TA6F43AHM3/6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F43AHM3/6B requirements.
6.How does Aetrix verify that TA6F43AHM3/6B is sourced from the original manufacturer or authorized distributors?
All TA6F43AHM3/6B 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 TA6F43AHM3/6B meets industry standards.
7.What is the process for return or replacement of TA6F43AHM3/6B?
All TA6F43AHM3/6B units undergo pre-shipment inspection (PSI). If there is an issue with TA6F43AHM3/6B, 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 TA6F43AHM3/6B part is unused and in its original packaging.
Return procedure for TA6F43AHM3/6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F43AHM3/6B Tags
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