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Vishay General Semiconductor - Diodes Division TA6L39AHM3/I
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- Part No.:
- TA6L39AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6L39AHM3/I.pdf
- Description:
- 600W,39V 5%, SLIMSMAW PAR
- Quantity:
- Payment:
- Shipping:
Inventory:5,780
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Product details
Overview
TA6L39AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SlimSMAW (DO-221AD) package, designed for automotive-grade overvoltage protection. It features 39.0 V nominal breakdown voltage (VBR), 33.3 V stand-off voltage (VWM), 53.9 V maximum clamping voltage at 11.1 A peak pulse current, 600 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - enabling robust protection of MOSFETs and sensor signal lines in engine control units.
For engineers reviewing the TA6L39AHM3/I datasheet, TA6L39AHM3/I pinout, TA6L39AHM3/I application, or TA6L39AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, unidirectional configuration, low-profile SlimSMAW footprint, TJ = 185 °C capability, and compatibility with high-reliability automotive transients induced by inductive load switching.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable clamping performance under high-temperature stress. Its junction passivation and MSL level 1 rating (260 °C reflow) support automated assembly in demanding automotive PCB environments.
The device operates as a single-element, cathode-banded unidirectional clamp with defined VBR tolerance (±5%), low leakage (<1 µA at VWM), and predictable temperature coefficient (0.091 %/°C), ensuring consistent surge response across -65 °C to +185 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - defines precise voltage threshold where avalanche conduction begins under 1 mA test current |
| VWM | 33.3 V - maximum continuous reverse working voltage before significant leakage occurs |
| VC @ IPPM | 53.9 V at 11.1 A - clamping voltage during 600 W transient, limiting downstream IC stress |
| PPPM | 600 W (10/1000 µs waveform) - peak surge energy handling capacity per industry-standard test |
| TJ max | +185 °C - enables operation in under-hood automotive locations without thermal derating penalties |
| Package | SlimSMAW (DO-221AD) - low-profile, halogen-free, RoHS-compliant surface-mount case with matte tin leads |
| Qualification | AEC-Q101 qualified, JESD22-B102 solderable, JESD201 Class 2 whisker tested - meets automotive reliability requirements |
Pinout & Package
SlimSMAW (DO-221AD) is a two-terminal, single-diode surface-mount package with cathode indicated by a color band on the top surface. The device has no internal connections beyond anode and cathode; polarity must be observed during PCB layout to ensure correct transient clamping direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; forms clamping loop with cathode |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., sensor supply or signal); color band marks this end |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping | Enables precise protection of DC-biased lines without forward-conduction interference |
| 185 °C junction rating | Supports placement near heat sources (e.g., power stages) without derating in automotive ECUs |
| MSL Level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow, reducing manufacturing cost and risk |
| Passivated anisotropic rectifier | Delivers stable VBR and low leakage over lifetime, even under thermal cycling stress |
| Halogen-free, RoHS-compliant | Meets global environmental compliance mandates without compromising electrical performance |
Applications
| Engine Control Unit (ECU) Power Rail Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied microcontroller power inputs from load-dump and jump-start transients. IC Role / Device Role / Timing Role: TVS diode placed between VIN and GND to clamp surges above 33.3 V before reaching LDO or MCU. Use Value: Withstands 600 W pulses and maintains <1 µA leakage at 33.3 V, preserving system quiescent current and preventing false resets. |
Use Scenario: Safeguarding analog output lines of pressure or temperature sensors exposed to ESD and inductive coupling. IC Role / Device Role / Timing Role: Unidirectional clamp on sensor VOUT line referenced to sensor ground, absorbing fast transients without distorting DC signal. Use Value: 53.9 V clamping at 11.1 A limits voltage excursion within ADC input range while maintaining <1 µA leakage at 33.3 V. |
| Body Control Module (BCM) LIN Bus Protection | Electric Power Steering (EPS) Motor Driver Gate Protection |
Use Scenario: Shielding LIN transceiver pins from cable discharge events and board-level ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector interface to shunt ESD energy before entering transceiver. Use Value: SlimSMAW footprint allows placement within 2 mm of connector, minimizing inductance and preserving 19.2 kbps signal integrity. |
Use Scenario: Protecting high-side and low-side gate drivers from Miller-induced voltage spikes during MOSFET switching. IC Role / Device Role / Timing Role: Clamp placed between gate and source of each power MOSFET to suppress dv/dt-induced overshoot. Use Value: 185 °C rating ensures sustained operation adjacent to motor driver ICs without thermal runaway or parameter drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | Higher VWM (30.8 V), lower VC (58.1 V @ 10.3 A), same SlimSMA package but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial systems without AEC compliance mandate | Select SMAJ36A-E3/57T only when AEC-Q101 is not required and tighter clamping margin is prioritized over qualification |
| TPSMD36CA | Bidirectional configuration, higher VC (59.3 V @ 10.1 A), same 600 W rating, AEC-Q101 qualified | Clamps both polarities - appropriate for AC-coupled or floating signal lines, not DC-biased rails | Choose TPSMD36CA only when bidirectional protection is needed; TA6L39AHM3/I remains optimal for unidirectional DC rail protection |
Compared with SMAJ36A-E3/57T and TPSMD36CA, TA6L39AHM3/I uniquely combines AEC-Q101 qualification, unidirectional operation, 33.3 V VWM, and 185 °C junction rating - making it the preferred choice for high-reliability automotive DC power and signal line protection where polarity and thermal endurance are critical.
Availability
TA6L39AHM3/I is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, electric power steering systems, and sensor interface designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TA6L39AHM3/I 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, and optoelectronics for automotive, industrial, and computing markets.
The TA6L39AHM3/I belongs to Vishay's PAR® series of transient voltage suppressors, engineered specifically for AEC-Q101-compliant automotive electronics requiring stable clamping performance under extreme thermal and electrical stress.
FAQ
What is the exact breakdown voltage tolerance for TA6L39AHM3/I?
The TA6L39AHM3/I has a specified breakdown voltage (VBR) range of 37.1 V (min) to 41.0 V (max) at 1.0 mA test current, yielding a ±5% tolerance around the nominal 39.0 V value. This tight tolerance ensures predictable clamping onset across production lots and supports reliable design margining in automotive safety-critical circuits.
Is TA6L39AHM3/I compatible with lead-free reflow processes?
Yes, TA6L39AHM3/I is rated for MSL Level 1 per J-STD-020 and supports a maximum peak reflow temperature of 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD22-B102, making it fully compatible with standard lead-free soldering profiles used in automotive PCB assembly.
Does TA6L39AHM3/I meet automotive reliability standards?
Yes, TA6L39AHM3/I carries the HM3 suffix indicating AEC-Q101 qualification and JESD201 Class 2 whisker testing. It is also rated for operation up to +185 °C junction temperature and meets UL 94 V-0 flammability requirements - fulfilling core automotive reliability and safety mandates.
What is the maximum clamping voltage of TA6L39AHM3/I under surge conditions?
The TA6L39AHM3/I exhibits a maximum clamping voltage (VC) of 53.9 V at 11.1 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events.
How does the thermal resistance of TA6L39AHM3/I affect PCB layout?
TA6L39AHM3/I has a typical junction-to-mount thermal resistance (RθJM) of 12 °C/W. To maintain safe operation under repeated surges, PCB land patterns should follow Vishay's recommended mounting pad layout for SlimSMAW (DO-221AD), including minimum copper area and thermal vias - especially critical in high-ambient-temperature automotive zones.
TA6L39AHM3/I 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):
- 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:
- SlimSMAW (DO-221AD)
TA6L39AHM3/I FAQ
1.How can I place an order for TA6L39AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6L39AHM3/I 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 TA6L39AHM3/I reliable?
The price and inventory of TA6L39AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6L39AHM3/I is usually 5 days.
3.What payment methods are accepted for TA6L39AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6L39AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6L39AHM3/I?
TA6L39AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6L39AHM3/I 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 TA6L39AHM3/I?
For technical support, including TA6L39AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6L39AHM3/I requirements.
6.How does Aetrix verify that TA6L39AHM3/I is sourced from the original manufacturer or authorized distributors?
All TA6L39AHM3/I 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 TA6L39AHM3/I meets industry standards.
7.What is the process for return or replacement of TA6L39AHM3/I?
All TA6L39AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with TA6L39AHM3/I, 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 TA6L39AHM3/I part is unused and in its original packaging.
Return procedure for TA6L39AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6L39AHM3/I Tags
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