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Vishay General Semiconductor - Diodes Division TA6F43AHM3/6A
- Part No.:
- TA6F43AHM3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F43AHM3/6A.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,106
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Product details
Overview
TA6F43AHM3/6A from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and ESD transients on power and signal lines. It features a 40.9–45.2 V breakdown voltage (VBR), 36.8 V stand-off voltage (VWM), 59.3 V clamping voltage at 10.1 A peak pulse current, 600 W peak pulse power (10/1000 μs), and operates up to 185 °C junction temperature. It is used for protecting MOSFET gates and sensor signal lines in automotive body control modules.
For engineers reviewing the TA6F43AHM3/6A datasheet, TA6F43AHM3/6A pinout, TA6F43AHM3/6A application, or TA6F43AHM3/6A equivalent, key selection criteria include unidirectional clamping capability, DO-221AC package compatibility with automated placement, AEC-Q101 qualification, IEC 61000-4-2 Level 4 ESD immunity, and thermal resistance (RθJA = 145 °C/W) under FR-4 board conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low-profile mounting. Its unidirectional architecture provides precise reverse-biased clamping during overvoltage events while maintaining low leakage (<1.0 μA at VWM) at 150 °C junction temperature.
The device delivers 600 W peak pulse power handling per 10/1000 μs waveform with a clamping ratio of 1.45 (VC/VBR typical), enabling robust protection of 3.3 V–24 V interface circuits without forward conduction interference. Its DO-221AC (SlimSMA) package supports high-density PCB layouts and meets MSL Level 1 reflow requirements up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V - ensures reliable triggering above system operating voltage while avoiding false trips during normal transients |
| VWM | 36.8 V - maximum continuous reverse working voltage compatible with 36 V nominal automotive power rails |
| VC @ IPPM | 59.3 V at 10.1 A - limits downstream voltage stress to safe levels for 40 V-rated ICs and MOSFETs |
| PPPM | 600 W (10/1000 μs) - sustains high-energy load dump and inductive kick events common in 12 V/24 V vehicle systems |
| TJ max | 185 °C - enables operation in under-hood environments and high-power density designs without derating |
| ESD rating | ±15 kV air / ±8 kV contact (IEC 61000-4-2 Level 4) - protects against human-body-model electrostatic discharge in assembly and field use |
| RθJA | 145 °C/W - defines thermal rise on standard FR-4 PCB with minimum recommended pad layout; requires thermal relief design for sustained power dissipation |
Pinout & Package
Package: DO-221AC (SlimSMA), ultra-low profile (0.95 mm typical height), halogen-free, RoHS-compliant, AEC-Q101 qualified, matte tin-plated terminals, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path during clamping | Connected to protected line's low-side reference (e.g., GND or return path); must be routed with low-inductance trace |
| Cathode | Clamping node | Connected to protected line (e.g., 12 V rail or sensor output); color band identifies this terminal; determines unidirectional polarity |
Key Features
| Feature | Design Value |
|---|---|
| Uni-directional clamping | Enables integration into DC-biased power rails without forward conduction losses or signal distortion |
| Junction passivation | Ensures stable leakage performance and long-term reliability under high-temperature/humidity stress (e.g., 85 °C/85 % RH) |
| AEC-Q101 qualification | Validates suitability for automotive electronics including engine control units, lighting modules, and ADAS sensor interfaces |
| MSL Level 1 | Permits standard SMT reflow without baking or special handling; peak temperature tolerance up to 260 °C |
| Low profile (0.95 mm) | Supports ultra-thin consumer and industrial modules where Z-height is constrained (e.g., wearable sensors, compact ECUs) |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and relay driver outputs from load dump and inductive kick in door module PCBs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply rail and ground, clamping transients within 1 ns response time. Use Value: Prevents latch-up and gate oxide damage in 40 V-rated N-channel MOSFETs driving solenoids and lamps. |
Use Scenario: Shielding analog output lines (4–20 mA) of pressure and temperature transmitters from ESD and cable-induced surges. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal line-to-ground path, activated only during overvoltage events >36.8 V. Use Value: Maintains sub-μA leakage at 24 V operation while surviving repeated ±8 kV contact ESD strikes without parameter shift. |
| Consumer Power Adapter Input Stage | Telecom PoE Interface Protection |
Use Scenario: Secondary-side surge suppression on 5 V/9 V/12 V DC outputs of wall adapters exposed to mains-coupled transients. IC Role / Device Role / Timing Role: Clamping device between regulated output and chassis ground, sized for 600 W 10/1000 μs pulses. Use Value: Eliminates need for bulkier through-hole TVS while meeting IEC 61000-4-5 Level 3 (1 kV) requirements on compact PCBs. |
Use Scenario: Protecting Ethernet PHY power pins (3.3 V, 5 V) in PoE-powered devices from induced surges on data lines. IC Role / Device Role / Timing Role: Unidirectional TVS on each powered pair, coordinated with common-mode chokes to limit differential-mode overshoot. Use Value: Enables compliance with IEEE 802.3af/at surge immunity tests using a single 0.95 mm-height component per rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/57T | Same VBR range (40.9–45.2 V), but lower PPPM = 400 W; RθJA = 170 °C/W; not AEC-Q101 qualified | Limited to commercial-grade industrial and consumer applications; unsuitable for automotive under-hood use | Select when cost sensitivity outweighs automotive qualification and higher pulse power is unnecessary |
| 1.5SMC43A | Higher profile (2.6 mm), larger DO-214AB package; PPPM = 1500 W; VC = 69.4 V at 21.7 A; AEC-Q101 qualified | Requires more PCB area and thermal mass; better suited for high-energy 24 V systems with space margin | Choose when system-level surge testing exceeds 600 W or when legacy DO-214AB footprint is fixed |
Compared with SMAJ43A-E3/57T and 1.5SMC43A, the TA6F43AHM3/6A uniquely balances AEC-Q101 qualification, 600 W pulse capability, and ultra-low 0.95 mm height-making it optimal for space-constrained automotive and portable industrial designs where thermal and mechanical envelope are critical.
Availability
TA6F43AHM3/6A is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer power adapter outputs, and telecom PoE-powered device protection requiring stable component supply across production lifecycles.
Supply support for TA6F43AHM3/6A 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, high-temperature operation, and automotive qualification.
The TA6F43AHM3/6A belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom infrastructure where compact size, AEC-Q101 compliance, and stable clamping under thermal stress are mandatory.
FAQ
What is the clamping voltage of the TA6F43AHM3/6A at its rated peak pulse current?
The TA6F43AHM3/6A has a maximum clamping voltage (VC) of 59.3 V at 10.1 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per the test method defined in the Vishay datasheet Document Number 89939 and reflects worst-case clamping performance at TA = 25 °C. The TA6F43AHM3/6A maintains this clamping level across its operational temperature range, supporting robust protection of downstream 40 V-rated components.
Is the TA6F43AHM3/6A suitable for automotive applications?
Yes, the TA6F43AHM3/6A is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and cabin automotive applications including body control modules, lighting drivers, and sensor interfaces. Its DO-221AC package supports automated SMT assembly, and its ESD immunity (IEC 61000-4-2 Level 4) meets automotive EMC requirements. The TA6F43AHM3/6A is explicitly listed in Vishay's qualified automotive product list per revision 18-Apr-16.
What does the "HM3/6A" suffix indicate in TA6F43AHM3/6A?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. The "/6A" indicates the preferred packaging option: 7-inch diameter plastic tape and reel containing 3500 units. This packaging format is optimized for high-speed pick-and-place equipment and complies with EIA-481 standards. The TA6F43AHM3/6A is the fully specified, production-ready orderable variant of the TA6F43A series.
How does the thermal resistance of the TA6F43AHM3/6A affect PCB layout?
The TA6F43AHM3/6A has a typical junction-to-ambient thermal resistance (RθJA) of 145 °C/W when mounted on an FR-4 board with the minimum recommended pad layout. To avoid exceeding the 185 °C maximum junction temperature, designers must limit average power dissipation and ensure adequate copper area around the cathode/anode pads. The TA6F43AHM3/6A benefits from thermal vias under the cathode pad and symmetric trace routing to minimize thermal gradient-induced stress.
Can the TA6F43AHM3/6A replace older SMAJ43A devices in existing designs?
The TA6F43AHM3/6A is not a direct pin-compatible replacement for SMAJ43A due to different package outlines (DO-221AC vs. DO-214AC) and thermal characteristics. While both offer similar VBR and VC, the TA6F43AHM3/6A has lower profile (0.95 mm vs. 2.29 mm), higher thermal resistance, and stricter automotive qualification. Redesign of pad layout and thermal validation are required before substituting TA6F43AHM3/6A into an SMAJ43A-based design.
TA6F43AHM3/6A 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:
- 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)
TA6F43AHM3/6A FAQ
1.How can I place an order for TA6F43AHM3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F43AHM3/6A 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 TA6F43AHM3/6A reliable?
The price and inventory of TA6F43AHM3/6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F43AHM3/6A is usually 5 days.
3.What payment methods are accepted for TA6F43AHM3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F43AHM3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F43AHM3/6A?
TA6F43AHM3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F43AHM3/6A 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 TA6F43AHM3/6A?
For technical support, including TA6F43AHM3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F43AHM3/6A requirements.
6.How does Aetrix verify that TA6F43AHM3/6A is sourced from the original manufacturer or authorized distributors?
All TA6F43AHM3/6A 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 TA6F43AHM3/6A meets industry standards.
7.What is the process for return or replacement of TA6F43AHM3/6A?
All TA6F43AHM3/6A units undergo pre-shipment inspection (PSI). If there is an issue with TA6F43AHM3/6A, 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 TA6F43AHM3/6A part is unused and in its original packaging.
Return procedure for TA6F43AHM3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F43AHM3/6A Tags
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