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Vishay General Semiconductor - Diodes Division TA6F39AHM3_A/I
- Part No.:
- TA6F39AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F39AHM3_A/I.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,341
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Product details
Overview
TA6F39AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SlimSMA (DO-221AC) package, rated for 39.0 V breakdown voltage (VBR), 33.3 V stand-off voltage (VWM), and 600 W peak pulse power (10/1000 μs). It delivers 53.9 V clamping voltage at 11.1 A peak surge current and operates up to +185 °C junction temperature, making it suitable for automotive sensor line protection against load dump and ESD.
For engineers reviewing the TA6F39AHM3_A/I datasheet, TA6F39AHM3_A/I pinout, TA6F39AHM3_A/I application, or TA6F39AHM3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, 30 kV IEC 61000-4-2 ESD rating, MSL Level 1 moisture sensitivity, and SlimSMA footprint compatibility with automated SMT placement on FR4 PCBs.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under repetitive transients while maintaining low leakage (<1.0 μA at VWM) across -65 °C to +185 °C operating range. Its thermal resistance junction-to-mount (RθJM) is 12–15 °C/W, enabling reliable operation on minimum recommended pad layout without heatsink.
The device features a color-band cathode marking and matte tin-plated terminals compliant with J-STD-002 and JESD22-B102 solderability standards. HM3 suffix denotes halogen-free, RoHS-compliant construction qualified per AEC-Q101 and JESD201 Class 2 whisker test.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - ensures reliable triggering above system nominal voltage with margin against tolerance drift |
| VWM | 33.3 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA at 25 °C |
| VC @ IPPM | 53.9 V at 11.1 A - clamping voltage limits downstream IC stress during 10/1000 μs surge events |
| PPPM | 600 W (10/1000 μs) - handles high-energy transients common in automotive power line and sensor interfaces |
| TJ max | +185 °C - supports under-hood automotive applications where ambient temperatures exceed 125 °C |
| ESD Rating | ±30 kV contact/air per IEC 61000-4-2 - protects sensitive analog front-ends from human-body-model discharge |
| Package | SlimSMA (DO-221AC) - 0.95 mm profile enables compact layout in space-constrained modules |
Pinout & Package
SlimSMA (DO-221AC) package: surface-mount, unidirectional configuration with cathode indicated by color band. 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 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference plane to complete clamping loop during overvoltage event |
| Cathode | Protected line connection | Connected to signal/power line being protected; color band identifies polarity for correct orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock testing |
| Junction passivation | Reduces surface leakage and improves long-term stability under high humidity and bias stress |
| MSL Level 1 rating | Enables unlimited floor life and reflow at 260 °C peak without baking preconditioning |
| Low-profile height (0.95 mm) | Minimizes board warpage risk and allows stacking with adjacent components in tight vertical envelopes |
| Halogen-free & RoHS-compliant | Meets automotive environmental compliance requirements and eliminates corrosive halogen emissions during reflow |
Applications
| Automotive Sensor Protection | Power Line Transient Suppression |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from ISO 7637-2 pulse 1/2a/5a transients and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp fast-rising spikes before they reach input pins of interface ICs. Use Value: Limits clamping voltage to 53.9 V while sustaining 11.1 A surge, preventing latch-up or gate oxide damage in 3.3 V/5 V sensor interface ICs. |
Use Scenario: Safeguarding 12 V/24 V automotive power rails against load dump (ISO 16750-2) and alternator ripple-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp mounted directly at power entry point, shunting energy to ground during >100 V transients. Use Value: Withstands 600 W peak pulse power and operates up to +185 °C, ensuring robustness in engine control unit (ECU) power domains. |
| Industrial I/O Protection | Consumer Electronics ESD Guarding |
|
Use Scenario: Shielding PLC digital input channels and analog acquisition circuits from field-induced surges in factory automation environments. IC Role / Device Role / Timing Role: Standoff-rated TVS (33.3 V) placed ahead of protection diodes and series resistors to absorb bulk energy before secondary protection stages. Use Value: Low leakage (<1.0 μA) preserves signal integrity in high-impedance measurement paths; SlimSMA footprint fits dense industrial PCB layouts. |
Use Scenario: Adding IEC 61000-4-2 level 4 ESD protection to USB, HDMI, and audio jack interfaces in infotainment head units and ADAS displays. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp on hot-swap lines to prevent electrostatic discharge from damaging PHY-level transceivers. Use Value: 30 kV air/contact ESD rating meets automotive interior EMC requirements without degrading signal bandwidth due to low junction capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | Higher VBR (38.0–42.2 V), same SlimSMA package, 600 W rating, but only rated to +150 °C TJ | Lacks AEC-Q101 qualification and 185 °C capability; not approved for under-hood use | Select when cost sensitivity outweighs extended temperature requirement and automotive qualification is not mandated |
| TPSMD36A | Same VWM/VBR range, 600 W rating, AEC-Q101 qualified, but DO-214AB (SMC) package (2.5 mm height) | Greater thermal mass but incompatible with ultra-low-profile designs requiring <1.0 mm height | Choose if board-level thermal dissipation needs exceed SlimSMA limits and Z-height constraint is relaxed |
Compared with SMBJ36A and TPSMD36A, the TA6F39AHM3_A/I uniquely combines AEC-Q101 qualification, +185 °C operation, and 0.95 mm profile-enabling direct integration into next-generation automotive sensor modules where space, temperature, and reliability are simultaneously constrained.
Availability
TA6F39AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, power line transient suppression, and industrial I/O safeguarding requiring stable component supply across production lifecycles.
Supply support for TA6F39AHM3_A/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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on automotive, industrial, and computing applications.
The TA6F series belongs to Vishay's PAR® family of high-reliability TVS diodes engineered specifically for harsh-environment automotive electronics, featuring enhanced thermal stability and AEC-Q101 validation.
FAQ
What is the breakdown voltage tolerance for TA6F39AHM3_A/I?
The TA6F39AHM3_A/I has a specified breakdown voltage (VBR) range of 37.1 V (min) to 41.0 V (max) at 1.0 mA test current, with 39.0 V nominal. This ±5% tolerance ensures consistent triggering behavior across production lots while accommodating thermal drift via its 0.091 %/°C temperature coefficient.
Is TA6F39AHM3_A/I compatible with lead-free reflow processes?
Yes, the TA6F39AHM3_A/I is fully compatible with lead-free reflow. Its matte tin-plated terminals meet J-STD-002 solderability standards, and it is rated for a maximum peak reflow temperature of 260 °C per J-STD-020 MSL Level 1-no pre-baking required even after indefinite dry pack exposure.
Does TA6F39AHM3_A/I support bidirectional transient suppression?
No, the TA6F39AHM3_A/I is strictly unidirectional. Its electrical characteristics-including VBR, VWM, and clamping behavior-are defined only for reverse-biased operation. For bidirectional protection, a separate symmetric TVS array or dual-diode configuration must be used.
What is the thermal resistance of TA6F39AHM3_A/I on standard FR4 PCB?
When mounted on a standard FR4 PCB with minimum recommended pad layout, the TA6F39AHM3_A/I exhibits a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W. This value increases to 150 °C/W maximum and supports 8 W power dissipation at TM = 65 °C under defined mounting conditions.
How does the TA6F39AHM3_A/I compare to older SMAJ33A in automotive use?
The TA6F39AHM3_A/I replaces legacy SMAJ33A with superior specs: higher TJ max (+185 °C vs. +150 °C), AEC-Q101 qualification (vs. no automotive qualification), lower profile (0.95 mm vs. 2.3 mm), and tighter VBR tolerance. Its SlimSMA package also improves SMT yield in high-speed placement systems.
TA6F39AHM3_A/I 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:
- 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:
- DO-221AC (SlimSMA)
TA6F39AHM3_A/I FAQ
1.How can I place an order for TA6F39AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F39AHM3_A/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 TA6F39AHM3_A/I reliable?
The price and inventory of TA6F39AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F39AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TA6F39AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F39AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F39AHM3_A/I?
TA6F39AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F39AHM3_A/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 TA6F39AHM3_A/I?
For technical support, including TA6F39AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F39AHM3_A/I requirements.
6.How does Aetrix verify that TA6F39AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TA6F39AHM3_A/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 TA6F39AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TA6F39AHM3_A/I?
All TA6F39AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TA6F39AHM3_A/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 TA6F39AHM3_A/I part is unused and in its original packaging.
Return procedure for TA6F39AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F39AHM3_A/I Tags
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