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Vishay General Semiconductor - Diodes Division TA6F39AHM3/6A
- Part No.:
- TA6F39AHM3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F39AHM3/6A.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,640
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Product details
Overview
TA6F39AHM3/6A from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and ESD transients on signal lines and power rails. It features a breakdown voltage of 37.1–41.0 V, 600 W peak pulse power (10/1000 μs), 53.9 V clamping voltage at 11.1 A, 185 °C maximum junction temperature, and DO-221AC (SlimSMA) package - used to protect MOSFET gate drivers and sensor interfaces in automotive ECUs.
For engineers reviewing the TA6F39AHM3/6A datasheet, TA6F39AHM3/6A pinout, TA6F39AHM3/6A application, or TA6F39AHM3/6A equivalent, key selection criteria include unidirectional clamping behavior, AEC-Q101 qualification, IEC 61000-4-2 level 4 ESD immunity (15 kV air / 8 kV contact), thermal resistance (RθJA = 145 °C/W), and SlimSMA mechanical compatibility with automated SMT placement.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 37.1–41.0 V breakdown range at 1 mA test current. Its 53.9 V clamping voltage at 11.1 A IPPM ensures robust overvoltage protection while limiting stress on downstream ICs during 10/1000 μs transients.
Designed for high-reliability environments, it sustains operation up to TJ = 185 °C, meets MSL Level 1 per J-STD-020 (260 °C reflow peak), and uses passivated anisotropic rectifier technology for stable leakage performance (<1 μA at 33.3 V, TJ = 150 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V at 1 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| VWM | 33.3 V - maximum continuous reverse working voltage before significant leakage begins |
| VC @ IPPM | 53.9 V at 11.1 A - limits peak voltage seen by protected circuit during 600 W surge event |
| PPPM | 600 W (10/1000 μs) - energy-handling capacity for common lightning/inductive-spike waveforms |
| TJ max | 185 °C - enables under-hood automotive use without derating in high-ambient environments |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - qualifies for direct interface with exposed connectors |
| Package | DO-221AC (SlimSMA) - 2.70 × 5.52 mm footprint, 0.95 mm height, optimized for space-constrained PCBs |
Pinout & Package
DO-221AC (SlimSMA) package: surface-mount, single-axis asymmetric outline with cathode band marking; 2-terminal device with no internal connections beyond anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected line's low-side reference | Completes clamping path to ground when transient exceeds VBR; requires low-inductance grounding |
| Cathode | Current exit terminal in forward bias; marked by color band on package | Connected to protected signal/power rail; reverse-biased during normal operation; conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Uni-directional clamping architecture | Enables integration on DC-biased lines (e.g., 24 V supply rails, CAN H/L) without forward conduction loss |
| AEC-Q101 qualification | Validated reliability for automotive powertrain, body control, and ADAS modules per stress-test requirements |
| 185 °C junction rating | Supports operation in engine bay or near power converters without thermal derating penalties |
| MSL Level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow; compatible with standard SMT assembly lines |
| 0.95 mm profile | Reduces board-level height constraints in stacked modules and compact sensor housings |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting LIN bus transceivers and relay driver outputs from load-dump and inductive kickback in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between microcontroller GPIO and external connector to clamp transients before they reach IC pins. Use Value: Prevents latch-up or permanent damage to 5 V/12 V interface ICs during 12 V system load dump events (ISO 7637-2 Pulse 5a). |
Use Scenario: Shielding analog output lines (4–20 mA, 0–10 V) of pressure/temperature sensors from ESD and field wiring surges. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector entry point to shunt fast transients before reaching op-amp input stage. Use Value: Maintains signal integrity and avoids false readings caused by transient-induced offset shifts in precision measurement circuits. |
| Telecom Power Supply Input Stage | Consumer Appliance Motor Driver Protection |
Use Scenario: Safeguarding primary-side controller ICs and MOSFET gates in AC/DC adapters subjected to lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor input to clamp differential-mode surges before they propagate into SMPS controller. Use Value: Extends mean time between failures (MTBF) by absorbing 600 W transient energy without degradation over >10⁵ surge events. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machine control boards during commutation. IC Role / Device Role / Timing Role: Mounted across motor terminals to limit flyback voltage to <54 V, protecting half-bridge driver ICs rated for 60 V absolute maximum. Use Value: Eliminates need for snubber RC networks, reducing BOM count and PCB area while maintaining IEC 61000-4-4 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A (Bourns) | Higher VBR (36–40 V), same DO-214AA package, 600 W rating, but RθJA = 190 °C/W and TJ max = 150 °C | Limited to underhood ambient ≤105 °C; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and thermal margin requirements |
| SMCJ36A-Q (ON Semiconductor) | Same VBR range (36–40 V), DO-214AB package (larger than SlimSMA), AEC-Q101 qualified, TJ max = 175 °C | Requires 2.5× more PCB area; higher thermal mass slows response slightly | Choose when legacy layout accommodates larger SMC package and 175 °C suffices for target environment |
Compared with SMBJ36A and SMCJ36A-Q, TA6F39AHM3/6A delivers superior thermal capability (185 °C vs. ≤175 °C), lower profile (0.95 mm vs. ≥2.3 mm), and tighter VBR tolerance (±5.4% vs. ±10%), enabling higher-density, higher-temperature automotive designs without layout compromise.
Availability
TA6F39AHM3/6A is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power supplies requiring stable component supply, AEC-Q101 compliance, and high-temperature operational resilience.
Supply support for TA6F39AHM3/6A 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, efficiency, and application-specific optimization.
The TA6F series belongs to Vishay's PAR® family of high-power, high-temperature TVS diodes engineered specifically for automotive-grade transient suppression in space-constrained, thermally demanding environments.
FAQ
What is the exact breakdown voltage range for TA6F39AHM3/6A?
The TA6F39AHM3/6A has a guaranteed breakdown voltage (VBR) range of 37.1 V to 41.0 V at 1 mA test current, measured per the Vishay datasheet Document Number 89939. This tight ±5.4% tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage margin design in safety-critical systems.
Is TA6F39AHM3/6A suitable for automotive applications?
Yes, TA6F39AHM3/6A is AEC-Q101 qualified and rated for TJ = 185 °C, making it suitable for under-hood and powertrain applications. Its DO-221AC package meets MSL Level 1, and its ESD immunity (IEC 61000-4-2 Level 4) satisfies automotive EMC requirements for sensor and communication interfaces.
What is the clamping voltage of TA6F39AHM3/6A at its rated peak pulse current?
The TA6F39AHM3/6A clamps to a maximum of 53.9 V at its specified peak pulse current (IPPM) of 11.1 A under a 10/1000 μs waveform. This value is measured and guaranteed per the datasheet, ensuring downstream components see no more than 53.9 V during surge events.
Does TA6F39AHM3/6A have bidirectional capability?
No, TA6F39AHM3/6A is strictly unidirectional. It conducts only when reverse-biased above its breakdown voltage and blocks forward current like a standard diode. Bidirectional variants are not offered in the TA6F series; use SMAJ33CA or similar for symmetrical clamping.
What packaging format is supplied for TA6F39AHM3/6A?
TA6F39AHM3/6A is supplied in 7-inch plastic tape and reel format with a base quantity of 3,500 units per reel (package code "6A"). The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101-qualified construction per Vishay's ordering nomenclature.
TA6F39AHM3/6A 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- 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)
TA6F39AHM3/6A FAQ
1.How can I place an order for TA6F39AHM3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F39AHM3/6A 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 TA6F39AHM3/6A reliable?
The price and inventory of TA6F39AHM3/6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F39AHM3/6A is usually 5 days.
3.What payment methods are accepted for TA6F39AHM3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F39AHM3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F39AHM3/6A?
TA6F39AHM3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F39AHM3/6A 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 TA6F39AHM3/6A?
For technical support, including TA6F39AHM3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F39AHM3/6A requirements.
6.How does Aetrix verify that TA6F39AHM3/6A is sourced from the original manufacturer or authorized distributors?
All TA6F39AHM3/6A 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 TA6F39AHM3/6A meets industry standards.
7.What is the process for return or replacement of TA6F39AHM3/6A?
All TA6F39AHM3/6A units undergo pre-shipment inspection (PSI). If there is an issue with TA6F39AHM3/6A, 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 TA6F39AHM3/6A part is unused and in its original packaging.
Return procedure for TA6F39AHM3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F39AHM3/6A Tags
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