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Vishay General Semiconductor - Diodes Division TA6L43AHM3/H
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- Part No.:
- TA6L43AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6L43AHM3/H.pdf
- Description:
- 600W,43V 5%, SLIMSMAW PAR
- Quantity:
- Payment:
- Shipping:
Inventory:7,000
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Product details
Overview
TA6L43AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SlimSMAW (DO-221AD) package, designed for high-reliability automotive and industrial electronics protection. It features a 43.0 V nominal breakdown voltage (VBR), 36.8 V maximum standoff voltage (VWM), 600 W peak pulse power (10/1000 µs), 10.1 A peak pulse current (IPPM), and 59.3 V clamping voltage (VC) at IPPM, operating up to TJ = 185 °C.
For engineers reviewing the TA6L43AHM3/H datasheet, TA6L43AHM3/H pinout, TA6L43AHM3/H application, or TA6L43AHM3/H equivalent, this device serves as a robust, AEC-Q101-qualified overvoltage clamp for automotive sensor signal lines, MOSFET gate protection, and inductive load switching transients where high junction temperature stability and low-profile mounting are critical.
Technical Context
The TA6L43AHM3/H employs passivated anisotropic rectifier technology optimized for junction stability under thermal stress, enabling reliable operation up to 185 °C junction temperature. Its unidirectional configuration and single-diode circuit topology provide precise reverse-biased clamping with minimal leakage (≤1.0 µA at VWM).
Designed for compliance with JESD201 Class 2 whisker testing and MSL Level 1 (260 °C reflow), the device uses matte tin-plated leads and UL 94 V-0 molding compound. Its SlimSMAW package delivers low thermal resistance (RθJM ≤15 °C/W) and supports high-density PCB layouts without compromising surge handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 / 43.0 / 45.2 V - Ensures consistent avalanche initiation across production lots and temperature range |
| VWM | 36.8 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below VBR |
| IPPM (10/1000 µs) | 10.1 A - Peak surge current capability for standardized lightning/surge immunity testing per IEC 61000-4-5 |
| VC @ IPPM | 59.3 V - Clamped voltage during full-rated surge; determines protected circuit's maximum transient exposure |
| TJ max | +185 °C - Enables placement near heat sources (e.g., power stages, engine compartments) without derating |
| Package | SlimSMAW (DO-221AD) - 2.70 × 4.00 × 1.10 mm footprint with cathode band marking; compatible with automated SMT assembly |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard |
Pinout & Package
SlimSMAW (DO-221AD) surface-mount package with two terminals: anode and cathode. Cathode identified by molded color band on top surface. Mounting pad layout follows JEDEC DO-221AD standard; no thermal pad or exposed metal slug.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side reference | Provides return path for clamped surge current; must be routed with low-inductance connection to minimize VL overshoot |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., signal, power rail) | Acts as the clamping node; polarity marking ensures correct orientation during placement to avoid catastrophic failure |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C junction rating | Enables use in under-hood automotive modules and industrial motor drives without thermal derating penalties |
| 600 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4 surge requirements for 12 V systems |
| Low leakage (≤1.0 µA at VWM) | Minimizes standby power loss and avoids false triggering in high-impedance sensor interfaces |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow without moisture sensitivity concerns or baking requirements |
| AEC-Q101 qualified + JESD201 Class 2 whisker test | Validated for long-term reliability in automotive applications with vibration, thermal shock, and plating integrity demands |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Clamp |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between sensor output and ground, clamping transients within 1 ns response time. Use Value: Prevents sensor IC damage and signal corruption during 12 V system surges up to ±100 V, maintaining ASIL-B functional safety integrity. |
Use Scenario: Safeguarding gate drivers and MOSFETs in BLDC motor inverters from Miller-induced voltage spikes during high-dI/dt switching. IC Role / Device Role / Timing Role: Fast-response clamp across gate-to-source, limiting VGS excursion to <60 V during turn-off events. Use Value: Eliminates unintended turn-on and gate oxide stress, extending MOSFET lifetime in 48 V industrial drives operating at 20 kHz PWM. |
| Automotive Lighting Transient Suppression | Industrial PLC Input Protection |
Use Scenario: Suppressing switching transients on LED headlamp driver outputs caused by relay contact bounce and solenoid de-energization. IC Role / Device Role / Timing Role: Parallel-connected TVS at driver output, absorbing energy from L·di/dt spikes before reaching LED strings. Use Value: Prevents LED string open-circuit failures and driver IC latch-up during repeated 100 V/500 ms load dump events per ISO 16750-2. |
Use Scenario: Shielding digital input channels of programmable logic controllers from field-wiring induced surges in factory automation environments. IC Role / Device Role / Timing Role: Front-end protection element on 24 V DC inputs, shunting transients to common ground before signal conditioning circuitry. Use Value: Maintains input logic state fidelity during 4 kV EFT bursts and 2 kV surge events, reducing unplanned downtime in mission-critical control systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A-HF | Same VBR (43 V) and PPPM (600 W), but SMB (DO-214AA) package (4.5 × 3.9 mm); RθJA ≈ 160 °C/W vs. 150 °C/W for TA6L43AHM3/H | Higher profile and larger footprint; less suitable for ultra-thin automotive modules or dense PCBs | Select when legacy SMB footprint compatibility is required and thermal margin allows higher RθJA |
| SMCJ43A-QH | Higher PPPM (1500 W), same VBR; SMC (DO-214AB) package (7.1 × 6.2 mm); AEC-Q101 qualified but no JESD201 Class 2 whisker data published | Over-specified for 600 W needs; occupies >3× board area; intended for primary-level surge protection, not point-of-load | Choose only if system-level surge testing requires >1000 W clamping headroom and space permits larger package |
Compared with SMBJ43A-HF and SMCJ43A-QH, TA6L43AHM3/H delivers identical electrical clamping performance in a 30 % smaller footprint and lower thermal resistance, making it optimal for space-constrained, high-temperature automotive and industrial edge nodes where layout density and thermal management are prioritized.
Availability
TA6L43AHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial motor drive gate circuits, and PLC input protection requiring stable component supply with AEC-Q101 qualification and high-temperature operation.
Supply support for TA6L43AHM3/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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The TA6L43AHM3/H belongs to Vishay's PAR® series of high-temperature TVS diodes, engineered specifically for automotive and industrial environments demanding extended junction temperature operation, robust surge immunity, and long-term stability under thermal cycling.
FAQ
What is the maximum clamping voltage of the TA6L43AHM3/H at its rated peak pulse current?
The TA6L43AHM3/H has a maximum clamping voltage (VC) of 59.3 V when subjected to its rated 10.1 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per Figure 3 in the Vishay datasheet 87415 and defines the upper voltage limit imposed on the protected circuit during full-rated surge events. The TA6L43AHM3/H maintains this clamping performance consistently across its operating temperature range.
Is the TA6L43AHM3/H suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the TA6L43AHM3/H is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet 87415 and indicated by the HM3 suffix. It also meets JESD201 Class 2 whisker test requirements, making it appropriate for automotive powertrain, chassis, and body electronics where long-term reliability under thermal and mechanical stress is mandatory. The TA6L43AHM3/H is validated for operation up to 185 °C junction temperature, exceeding typical automotive under-hood requirements.
What package type does the TA6L43AHM3/H use, and how does it compare to standard SMA/SMB packages?
The TA6L43AHM3/H uses the SlimSMAW (DO-221AD) package - a low-profile variant measuring 2.70 × 4.00 × 1.10 mm - which is significantly smaller and thinner than standard SMB (DO-214AA, 4.5 × 3.9 mm) or SMA (DO-214AC, 4.3 × 2.6 mm) packages. Its reduced height improves airflow and enables placement beneath low-clearance shields. The TA6L43AHM3/H's SlimSMAW footprint supports higher board density while maintaining robust surge handling and thermal performance.
Does the TA6L43AHM3/H have bidirectional or unidirectional polarity?
The TA6L43AHM3/H is a unidirectional TVS diode, as clearly stated in the "PRIMARY CHARACTERISTICS" section of the Vishay datasheet 87415. It functions as a reverse-biased avalanche diode, conducting only when the cathode voltage exceeds the anode by more than VBR. This configuration provides precise clamping on positive transients relative to ground and is ideal for DC-biased signal or power rails. The TA6L43AHM3/H is not suitable for AC or bipolar transient suppression without external circuitry.
What is the standoff voltage (VWM) of the TA6L43AHM3/H, and why is it important for circuit design?
The TA6L43AHM3/H has a maximum working standoff voltage (VWM) of 36.8 V, meaning it remains non-conductive with leakage ≤1.0 µA up to this DC or RMS voltage level. This parameter ensures the device does not interfere with normal circuit operation while providing margin below the 43.0 V nominal breakdown voltage. Selecting a VWM ≥10–20 % above the system's maximum operating voltage prevents false triggering - a key design consideration for stable performance of the TA6L43AHM3/H in 36 V automotive or industrial systems.
TA6L43AHM3/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:
- SlimSMAW (DO-221AD)
TA6L43AHM3/H FAQ
1.How can I place an order for TA6L43AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6L43AHM3/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 TA6L43AHM3/H reliable?
The price and inventory of TA6L43AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6L43AHM3/H is usually 5 days.
3.What payment methods are accepted for TA6L43AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6L43AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6L43AHM3/H?
TA6L43AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6L43AHM3/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 TA6L43AHM3/H?
For technical support, including TA6L43AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6L43AHM3/H requirements.
6.How does Aetrix verify that TA6L43AHM3/H is sourced from the original manufacturer or authorized distributors?
All TA6L43AHM3/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 TA6L43AHM3/H meets industry standards.
7.What is the process for return or replacement of TA6L43AHM3/H?
All TA6L43AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with TA6L43AHM3/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 TA6L43AHM3/H part is unused and in its original packaging.
Return procedure for TA6L43AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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