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Vishay General Semiconductor - Diodes Division TA6F51AHM3/6A
- Part No.:
- TA6F51AHM3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F51AHM3/6A.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,288
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Product details
Overview
TA6F51AHM3/6A from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features a 48.5–53.6 V breakdown voltage (VBR), 43.6 V maximum working voltage (VWM), 600 W peak pulse power (10/1000 µs), 70.1 V clamping voltage at 8.6 A, and operates up to +185 °C junction temperature.
For engineers reviewing the TA6F51AHM3/6A datasheet, TA6F51AHM3/6A pinout, TA6F51AHM3/6A application, or TA6F51AHM3/6A equivalent, this device serves as a high-reliability, AEC-Q101-qualified protection solution for automotive power supply inputs, industrial sensor interfaces, and telecom DC-DC converter outputs where low-profile packaging and high thermal stability are critical.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for stable clamping under repetitive surge stress and elevated ambient temperatures. Its DO-221AC (SlimSMA) package enables automated placement and supports MSL Level 1 reflow with 260 °C peak temperature.
The device is strictly unidirectional, with cathode denoted by a color band, and exhibits 1.0 µA max reverse leakage at VWM (43.6 V) and TJ = 150 °C. Thermal resistance is 145 °C/W (junction-to-ambient, FR-4 board) and 20 °C/W (junction-to-mount), enabling robust power dissipation in constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5 V / 53.6 V - ensures reliable triggering above system nominal voltage while avoiding false trips during normal operation |
| VWM | 43.6 V - maximum continuous DC or RMS operating voltage before significant leakage begins |
| VC @ IPPM | 70.1 V at 8.6 A - clamping voltage limits downstream IC stress during 10/1000 µs surges |
| PPPM | 600 W (10/1000 µs) - handles typical automotive load-dump and inductive kick energy without failure |
| TJ max | +185 °C - supports under-hood and industrial environments where ambient exceeds 125 °C |
| ESD Rating | IEC 61000-4-2 Level 4: ±15 kV air, ±8 kV contact - protects against human-body-model ESD events |
| Package | DO-221AC (SlimSMA) - 0.95 mm height enables ultra-thin PCB designs and high-density placement |
Pinout & Package
DO-221AC (SlimSMA) surface-mount package with cathode indicated by a color band on the case. 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 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or lower-potential rail; forms current path during transient conduction |
| Cathode | High-side connection point | Marked with color band; connects to protected line (e.g., 48 V supply rail); conducts when VIN > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low profile | 0.95 mm height enables use in space-constrained modules such as automotive ECUs and portable telecom equipment |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per AEC standard |
| Junction passivation | Optimized anisotropic rectifier structure provides stable VBR over lifetime and temperature extremes |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without moisture-induced damage |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with environmental regulations and whisker resistance (JESD201 Class 2) |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: Protecting 48 V battery-fed control units from load dump and alternator ripple in ADAS domain controllers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp transients above 43.6 V. Use Value: Limits peak voltage to ≤70.1 V during 600 W surges, preventing damage to downstream PMICs and microcontrollers rated for 50 V absolute max. |
Use Scenario: Shielding analog output lines of pressure sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair to suppress ESD without distorting 0–10 V signals. Use Value: 1.0 µA leakage at 43.6 V ensures minimal offset error; 15 kV air discharge immunity meets IEC 61000-4-2 requirements. |
| Telecom DC-DC Converter Output | Server PSU 54 V Rail Clamp |
|
Use Scenario: Safeguarding isolated 48 V output of telecom brick converters against backfeed surges and hot-swap transients. IC Role / Device Role / Timing Role: TVS mounted directly at converter output capacitor to minimize inductance in clamping path. Use Value: 145 °C/W RθJA allows operation at full 600 W pulse power without exceeding 185 °C junction limit in compact heatsinkless layout. |
Use Scenario: Clamping transient spikes on 54 V intermediate bus in AI accelerator server power supplies. IC Role / Device Role / Timing Role: Unidirectional TVS placed between bus rail and system ground to absorb energy from MOSFET switching noise. Use Value: 70.1 V clamping voltage maintains safe margin below 80 V overvoltage protection threshold of downstream VRMs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54A-E3/52 (Vishay) | Higher VBR (51.3–56.7 V), same DO-214AA package, 600 W rating, but 1.5 mm height and no AEC-Q101 qualification | Not qualified for automotive under-hood use; suitable for industrial/commercial 48 V systems with less stringent reliability demands | Select SMBJ54A-E3/52 only if AEC-Q101 is not required and board height budget permits 1.5 mm profile |
| TPSMD58A (Texas Instruments) | 58 V VBR, 600 W, DO-214AB package, AEC-Q101 qualified, but 1.15 mm height and higher VC (93.6 V) | Clamps at significantly higher voltage - may exceed safe operating area of 50 V-rated downstream ICs | Prefer TA6F51AHM3/6A when clamping voltage < 71 V is mandatory; TPSMD58A fits only where higher VC is acceptable |
Compared with SMBJ54A-E3/52 and TPSMD58A, TA6F51AHM3/6A delivers tighter VBR tolerance, lower clamping voltage, and certified automotive qualification in a 0.95 mm SlimSMA package - making it optimal for height-sensitive, high-reliability 48 V systems where precise voltage limiting is essential.
Availability
TA6F51AHM3/6A is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor interface clamping, and telecom DC-DC converter output surge suppression requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TA6F51AHM3/6A 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The TA6F51AHM3/6A belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for high-temperature, high-stability protection in next-generation 48 V architectures and AEC-Q101-compliant electronic control units.
FAQ
What is the exact breakdown voltage range for TA6F51AHM3/6A?
The TA6F51AHM3/6A has a guaranteed breakdown voltage (VBR) range of 48.5 V to 53.6 V at 1.0 mA test current, measured per the Vishay datasheet revision 18-Apr-16. This range ensures consistent triggering behavior across production lots and temperature extremes, and is verified during 100% production testing for each TA6F51AHM3/6A unit shipped.
Is TA6F51AHM3/6A suitable for automotive under-hood applications?
Yes, TA6F51AHM3/6A is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications such as 48 V battery management systems and ADAS power modules. Its DO-221AC package and passivated die structure ensure long-term reliability under thermal cycling and humidity exposure conditions defined in the AEC-Q101 stress test plan.
What does the "HM3/6A" suffix mean in TA6F51AHM3/6A?
The "HM3" suffix indicates halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance, while "6A" denotes the preferred package code for 7-inch plastic tape-and-reel delivery containing 3500 units. This ordering code ensures traceable sourcing and compatibility with standard SMT pick-and-place feeders used in high-volume manufacturing of TA6F51AHM3/6A assemblies.
How does TA6F51AHM3/6A compare to older SMA-package TVS diodes?
TA6F51AHM3/6A uses the DO-221AC (SlimSMA) package - 0.95 mm tall versus 2.29 mm for legacy SMA - reducing board space and improving thermal performance via lower RθJM (20 °C/W). Unlike standard SMA devices, TA6F51AHM3/6A is fully AEC-Q101 qualified and specified for +185 °C operation, whereas most SMA TVS diodes are rated only to +150 °C and lack automotive qualification.
Can TA6F51AHM3/6A be used in bidirectional configurations?
No, TA6F51AHM3/6A is strictly unidirectional, as confirmed in the Vishay datasheet under FEATURES and ELECTRICAL CHARACTERISTICS. It conducts only when cathode voltage exceeds anode voltage by ≥VBR. For bidirectional protection, a separate device such as the bidirectional TA6F51CA variant (not TA6F51AHM3/6A) must be selected - using TA6F51AHM3/6A in reverse-biased configuration will not provide clamping.
TA6F51AHM3/6A 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):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- 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)
TA6F51AHM3/6A FAQ
1.How can I place an order for TA6F51AHM3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F51AHM3/6A 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 TA6F51AHM3/6A reliable?
The price and inventory of TA6F51AHM3/6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F51AHM3/6A is usually 5 days.
3.What payment methods are accepted for TA6F51AHM3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F51AHM3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F51AHM3/6A?
TA6F51AHM3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F51AHM3/6A 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 TA6F51AHM3/6A?
For technical support, including TA6F51AHM3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F51AHM3/6A requirements.
6.How does Aetrix verify that TA6F51AHM3/6A is sourced from the original manufacturer or authorized distributors?
All TA6F51AHM3/6A 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 TA6F51AHM3/6A meets industry standards.
7.What is the process for return or replacement of TA6F51AHM3/6A?
All TA6F51AHM3/6A units undergo pre-shipment inspection (PSI). If there is an issue with TA6F51AHM3/6A, 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 TA6F51AHM3/6A part is unused and in its original packaging.
Return procedure for TA6F51AHM3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F51AHM3/6A Tags
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