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Vishay General Semiconductor - Diodes Division TA6F43AHM3_A/H
- Part No.:
- TA6F43AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F43AHM3_A/H.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,546
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Product details
Overview
TA6F43AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in SlimSMA (DO-221AC) package, with 43.0 V nominal breakdown voltage (VBR), 36.8 V stand-off voltage (VWM), and 600 W peak pulse power (10/1000 μs). It delivers 10.1 A peak pulse current (IPPM) and clamps to 59.3 V at that current, operating up to 185 °C junction temperature for automotive sensor line protection.
For engineers reviewing the TA6F43AHM3_A/H datasheet, TA6F43AHM3_A/H pinout, TA6F43AHM3_A/H application, or TA6F43AHM3_A/H equivalent, this device is selected for high-reliability ESD and surge protection in space-constrained automotive electronics where AEC-Q101 qualification, MSL Level 1, and 30 kV IEC 61000-4-2 ESD immunity are mandatory.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for low-profile mounting and thermal stability. Its unidirectional configuration provides robust clamping during positive transients while maintaining low leakage (<1.0 μA at VWM) across temperature.
The SlimSMA (DO-221AC) package enables automated placement and supports 260 °C lead-free reflow per J-STD-020. With 120 °C/W typical junction-to-ambient thermal resistance and 12 °C/W junction-to-mount, it sustains 8 W power dissipation at TM = 65 °C on recommended PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 / 43.0 / 45.2 V - ensures reliable triggering above system operating voltage with margin against tolerance drift |
| VWM | 36.8 V - maximum continuous reverse voltage before significant leakage begins |
| IPPM (10/1000 μs) | 10.1 A - peak surge current capability under standard lightning/inductive-switching waveform |
| VC @ IPPM | 59.3 V - clamped voltage limiting stress on downstream ICs during transient events |
| TJ max | +185 °C - enables operation in under-hood automotive environments without derating |
| ESD rating | 30 kV contact/air per IEC 61000-4-2 - protects against human-body-model and system-level electrostatic discharge |
| Package | SlimSMA (DO-221AC) - 0.95 mm height, halogen-free, RoHS-compliant, AEC-Q101 qualified |
Pinout & Package
SlimSMA (DO-221AC) is a two-terminal surface-mount package with cathode indicated by a color band. The device has no internal circuitry beyond the PN junction; terminals serve only as anode and cathode connections for unidirectional clamping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to protected line's ground reference side | Completes clamping path when transient exceeds VBR; must be routed to low-impedance ground plane |
| Cathode | Current exit point during clamping; marked with color band | Connected to protected signal/power line; determines polarity of transient suppression |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile height | 0.95 mm typical - fits beneath low-clearance shields and in dense ADAS sensor modules |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| Junction passivation | Optimized anisotropic rectifier design - improves long-term stability under high-temperature bias conditions |
| MSL Level 1 | No floor life limitation - supports unlimited exposure to ambient prior to reflow soldering |
| Halogen-free & RoHS | Complies with environmental regulations and automotive material categorization standards |
Applications
| Automotive Sensor Protection | Power Line Surge Suppression |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control units against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between signal line and chassis ground. Use Value: Limits transient voltage to ≤59.3 V at 10.1 A, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding 12 V/24 V power rails feeding infotainment head units and ADAS cameras from alternator-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main supply input, upstream of DC/DC converters. Use Value: Absorbs 600 W (10/1000 μs) without degradation, maintaining <1.0 μA leakage at 36.8 V to avoid battery drain. |
| Industrial Motor Control I/O | Automotive Lighting Driver Protection |
Use Scenario: Shielding digital I/O lines of PLC modules from inductive kickback generated by solenoid and relay coils. IC Role / Device Role / Timing Role: Point-of-use transient suppressor on isolated digital inputs tied to field-side ground. Use Value: Clamps within nanoseconds to protect 5 V logic inputs, with 0.092 %/°C VBR tempco ensuring stable threshold across -40 to +125 °C ambient. | Use Scenario: Guarding LED driver ICs and MOSFET gates in adaptive front lighting systems (AFS) against ESD and switching transients. IC Role / Device Role / Timing Role: Secondary protection device parallel to primary TVS, placed directly at LED string connection points. Use Value: Withstands 30 kV IEC 61000-4-2 contact discharge and operates reliably up to +185 °C junction temperature near heat-generating LEDs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A | Same VBR (43 V), but lower PPPM (400 W), higher VC (69.4 V), and larger SMA package (2.3 mm height) | Lacks AEC-Q101 qualification and 185 °C rating; suitable for industrial, not automotive-critical use | Select SMAJ43A only if cost sensitivity outweighs automotive qualification and thermal performance requirements |
| TPSMD43A | Same VBR, identical SlimSMA package, but rated for 1500 W PPPM and higher IPPM (21.5 A) | Designed for higher-energy transients (e.g., ISO 16750-2 pulse 5a); requires verification of board thermal relief | Choose TPSMD43A when system-level testing reveals insufficient margin with 600 W clamping capability |
Compared with SMAJ43A and TPSMD43A, TA6F43AHM3_A/H offers the optimal balance of automotive qualification, ultra-low profile, and verified 600 W surge handling-making it preferred for space-limited, high-temperature vehicle subsystems where both reliability and form factor are constrained.
Availability
TA6F43AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, power rail surge suppression, and industrial I/O interface applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TA6F43AHM3_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.
The TA6F series belongs to Vishay's PAR® transient voltage suppressor product line, engineered specifically for AEC-Q101-compliant automotive electronics needing compact, high-temperature-stable surge protection.
FAQ
What is the breakdown voltage tolerance for TA6F43AHM3_A/H?
The TA6F43AHM3_A/H has a specified breakdown voltage range of 40.9 V (minimum) to 45.2 V (maximum) at 1.0 mA test current, with 43.0 V as the nominal value. This ±5% tolerance ensures consistent clamping behavior across production lots while accommodating thermal drift via its 0.092 %/°C temperature coefficient.
Is TA6F43AHM3_A/H compatible with lead-free reflow soldering processes?
Yes, TA6F43AHM3_A/H is fully compatible with lead-free reflow soldering. It meets J-STD-020 MSL Level 1 with a maximum peak temperature of 260 °C and is qualified for standard Pb-free thermal profiles. The matte tin-plated leads ensure reliable wetting and intermetallic formation without whisker risk (JESD 201 Class 2).
Does TA6F43AHM3_A/H require a heatsink for normal operation?
No, TA6F43AHM3_A/H does not require an external heatsink. Its SlimSMA package achieves 8 W power dissipation at TM = 65 °C using only the minimum recommended PCB pad layout per Vishay specification. Thermal performance relies on copper area and layer count-not added metalwork.
How does the clamping voltage of TA6F43AHM3_A/H compare to its stand-off voltage?
TA6F43AHM3_A/H clamps to 59.3 V at 10.1 A (10/1000 μs), which is 61% above its 36.8 V stand-off voltage. This ratio ensures safe margin below typical 60 V automotive system limits while allowing stable DC operation without leakage-induced power loss.
Can TA6F43AHM3_A/H replace older SMAJ43A devices in existing designs?
TA6F43AHM3_A/H is not a direct drop-in replacement for SMAJ43A due to differences in package height (0.95 mm vs. 2.3 mm), thermal resistance, and qualification status. While electrical parameters align closely, PCB land pattern and thermal validation must be rechecked-especially for automotive applications requiring AEC-Q101 compliance.
TA6F43AHM3_A/H 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:
- Active
- 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_A/H FAQ
1.How can I place an order for TA6F43AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F43AHM3_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 TA6F43AHM3_A/H reliable?
The price and inventory of TA6F43AHM3_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 TA6F43AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TA6F43AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F43AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F43AHM3_A/H?
TA6F43AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F43AHM3_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 TA6F43AHM3_A/H?
For technical support, including TA6F43AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F43AHM3_A/H requirements.
6.How does Aetrix verify that TA6F43AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TA6F43AHM3_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 TA6F43AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TA6F43AHM3_A/H?
All TA6F43AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TA6F43AHM3_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 TA6F43AHM3_A/H part is unused and in its original packaging.
Return procedure for TA6F43AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F43AHM3_A/H Tags
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