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Vishay General Semiconductor - Diodes Division TA6F33AHM3_A/H
- Part No.:
- TA6F33AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F33AHM3_A/H.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,764
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Product details
Overview
TA6F33AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SlimSMA (DO-221AC) package, featuring 33.0 V nominal breakdown voltage (VBR), 28.2 V stand-off voltage (VWM), 13.1 V clamping voltage (VC) at 45.7 A peak pulse current, and 600 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and rated for TJ = 185 °C, targeting automotive sensor line protection.
For engineers reviewing the TA6F33AHM3_A/H datasheet, TA6F33AHM3_A/H pinout, TA6F33AHM3_A/H application, or TA6F33AHM3_A/H equivalent, this device delivers high-reliability transient suppression in space-constrained automotive ECUs, powertrain sensors, and ADAS camera interfaces where low-profile mounting and IEC 61000-4-2 ±30 kV ESD robustness are critical.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable breakdown characteristics across temperature (αT = 0.089 %/°C) and supports operation up to 185 °C junction temperature. Its unidirectional configuration enables precise reverse-biased clamping on signal or supply rails without forward conduction interference.
The SlimSMA (DO-221AC) package provides ultra-low profile (0.95 mm typical height), MSL Level 1 moisture sensitivity, and matte tin-plated terminals compliant with J-STD-002 and JESD22-B102. Thermal resistance is 120–150 °C/W (junction-to-ambient) on FR4 PCB with minimum recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 / 33.0 / 34.7 V - ensures reliable triggering above system operating voltage while maintaining margin against false clamping |
| VWM | 28.2 V - maximum continuous reverse working voltage compatible with 24 V automotive systems |
| VC @ IPPM | 13.1 V at 45.7 A - limits transient-induced overvoltage to safe levels for downstream 3.3 V or 5 V ICs |
| PPPM (10/1000 μs) | 600 W - handles high-energy transients from load dump or inductive switching in vehicle subsystems |
| TJ max | 185 °C - supports under-hood placement in engine control modules and transmission controllers |
| ESD rating | ±30 kV per IEC 61000-4-2 contact discharge - protects CAN, LIN, and sensor analog front-ends from human-body-model surges |
| Package | SlimSMA (DO-221AC) - 0.95 mm height enables use in ultra-thin modules and camera housings |
Pinout & Package
SlimSMA (DO-221AC) is a two-terminal surface-mount package with cathode indicated by a color band. The device has no active internal circuitry beyond the PN junction; terminals serve only as anode and cathode connections for unidirectional clamping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during clamping | Connected to protected line (e.g., sensor output or CAN_H); conducts surge current toward ground when VREV > VBR |
| Cathode | Current exit point during clamping | Connected to system ground or low-impedance return path; polarity marking ensures correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C junction rating | Enables direct placement near heat-generating components in automotive power electronics without derating penalties |
| AEC-Q101 qualification | Validates reliability for automotive applications including vibration, thermal cycling, and humidity exposure per stress test requirements |
| 0.95 mm profile | Reduces board stack height in compact ADAS camera modules and radar sensor assemblies |
| MSL Level 1 | Eliminates bake-out requirement before reflow, supporting standard SMT assembly processes without moisture-related defects |
| 30 kV IEC 61000-4-2 ESD | Provides single-device protection for exposed connectors and harness interfaces without supplemental ESD arrays |
Applications
| Automotive Sensor Protection | CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting analog outputs of pressure, temperature, and position sensors in engine control units subject to load-dump transients and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and microcontroller ADC input to clamp fast-rising voltage spikes. Use Value: Limits clamped voltage to 13.1 V, preventing latch-up or damage to 5 V-tolerant SAR ADCs while maintaining signal integrity below VWM = 28.2 V. |
Use Scenario: Safeguarding CAN_H and CAN_L lines in body control modules against ESD events and coupled noise from nearby solenoid drivers. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (one per line) referenced to ground, providing low-capacitance (<100 pF) transient suppression. Use Value: Clamps 30 kV ESD strikes to <15 V within nanoseconds, preserving CAN bit timing and preventing bus lockup without adding signal distortion. |
| ADAS Camera Interface | 24 V Power Rail Protection |
Use Scenario: Shielding MIPI CSI-2 differential pairs and I²C configuration lines in surround-view camera modules mounted near motors and inverters. IC Role / Device Role / Timing Role: SlimSMA-packaged TVS placed adjacent to connector entry points to absorb fast transients before reaching image signal processor. Use Value: 0.95 mm height avoids mechanical interference with lens barrels; 30 kV ESD rating meets OEM camera module qualification standards. |
Use Scenario: Guarding 24 V supply inputs of telematics control units against load-dump events up to ISO 16750-2 Pulse 5a (75 V, 400 ms). IC Role / Device Role / Timing Role: Primary clamping device on main power rail, coordinated with upstream fuse and secondary LC filtering. Use Value: 600 W peak pulse power sustains clamping during extended transients; 185 °C rating prevents thermal runaway during repeated fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/5A (Vishay) | Same VBR (33 V) and PPPM (400 W), but SMA package (1.75 mm height) and lower TJ max (150 °C) | Limited to cabin-mounted modules; not suitable for under-hood or high-temperature zones | Select TA6F33AHM3_A/H when 185 °C operation or 0.95 mm profile is required |
| TPSMF33A (STMicroelectronics) | 33 V VBR, 600 W PPPM, SlimSMA package, but only AEC-Q200 qualified (not Q101) and 25 kV ESD rating | Acceptable for industrial sensors but may require additional validation for automotive safety-critical functions | Choose TA6F33AHM3_A/H for full AEC-Q101 compliance and guaranteed 30 kV ESD performance |
Compared with SMAJ33A-E3/5A and TPSMF33A, TA6F33AHM3_A/H uniquely combines AEC-Q101 qualification, 185 °C operation, 30 kV ESD immunity, and 0.95 mm profile-making it the only option validated for high-temperature automotive sensor nodes requiring zero-height penalty and full automotive-grade reliability.
Availability
TA6F33AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, CAN bus interface hardening, and ADAS camera module design requiring stable component supply across long production lifecycles.
Supply support for TA6F33AHM3_A/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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The TA6F series belongs to Vishay's PAR® family of high-temperature TVS diodes, engineered specifically for automotive electronics demanding AEC-Q101 compliance, extreme thermal resilience, and ultra-low-profile packaging.
FAQ
What is the clamping voltage of TA6F33AHM3_A/H at its rated peak pulse current?
The TA6F33AHM3_A/H has a maximum clamping voltage (VC) of 13.1 V at 45.7 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per the manufacturer's test method and ensures downstream 3.3 V or 5 V logic circuits remain within safe operating voltage limits during transient events. The TA6F33AHM3_A/H maintains this clamping performance across its full operating temperature range.
Is TA6F33AHM3_A/H suitable for bidirectional transient protection?
No, TA6F33AHM3_A/H is a unidirectional TVS diode and must be used with correct polarity-cathode connected to ground-to protect against reverse-polarity transients only. For bidirectional protection, two TA6F33AHM3_A/H devices would need back-to-back configuration, or a dedicated bidirectional part like TA6F33CA should be selected. The TA6F33AHM3_A/H datasheet explicitly specifies "Unidirectional" polarity.
Does TA6F33AHM3_A/H meet automotive qualification standards?
Yes, TA6F33AHM3_A/H is AEC-Q101 qualified per the Vishay datasheet revision dated 16-Jan-2025. This qualification covers stress tests including high-temperature operating life, temperature cycling, and mechanical shock-validating its suitability for automotive powertrain, chassis, and ADAS applications. The "HM3_A/H" suffix also denotes halogen-free, RoHS-compliant construction meeting automotive material requirements.
What is the thermal resistance of TA6F33AHM3_A/H on a standard PCB layout?
TA6F33AHM3_A/H exhibits a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on an FR4 PCB using the minimum recommended pad layout per JEDEC 51-2A. At higher ambient temperatures, power derating follows the curve in Figure 5 of the datasheet, with full 8 W power dissipation allowed only at TM = 65 °C. This RθJA value directly informs thermal design margin for TA6F33AHM3_A/H in enclosed automotive enclosures.
Can TA6F33AHM3_A/H replace SMAJ33A in existing designs?
TA6F33AHM3_A/H is not a direct drop-in replacement for SMAJ33A due to differences in package height (0.95 mm vs. 1.75 mm), thermal rating (185 °C vs. 150 °C), and footprint dimensions. While both share 33 V VBR and similar electrical specs, the TA6F33AHM3_A/H requires updated PCB land pattern and layout review for mechanical fit and thermal performance. Redesign validation is required before substituting TA6F33AHM3_A/H for SMAJ33A.
TA6F33AHM3_A/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):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.1A
- 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)
TA6F33AHM3_A/H FAQ
1.How can I place an order for TA6F33AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F33AHM3_A/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 TA6F33AHM3_A/H reliable?
The price and inventory of TA6F33AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F33AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TA6F33AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F33AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F33AHM3_A/H?
TA6F33AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F33AHM3_A/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 TA6F33AHM3_A/H?
For technical support, including TA6F33AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F33AHM3_A/H requirements.
6.How does Aetrix verify that TA6F33AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TA6F33AHM3_A/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 TA6F33AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TA6F33AHM3_A/H?
All TA6F33AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TA6F33AHM3_A/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 TA6F33AHM3_A/H part is unused and in its original packaging.
Return procedure for TA6F33AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F33AHM3_A/H Tags
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