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Vishay General Semiconductor - Diodes Division TA6F33AHM3/6B
- Part No.:
- TA6F33AHM3/6B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F33AHM3/6B.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,490
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Product details
Overview
TA6F33AHM3/6B from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and lightning-induced transients on signal lines and power rails. It features a 31.4–34.7 V breakdown voltage (VBR), 28.2 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), 13.1 A peak pulse current, and 45.7 V maximum clamping voltage at rated current - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the TA6F33AHM3/6B datasheet, TA6F33AHM3/6B pinout, TA6F33AHM3/6B application, or TA6F33AHM3/6B equivalent, key selection criteria include its AEC-Q101 qualification, DO-221AC (SlimSMA) package, 185 °C max junction temperature, uni-directional polarity, and ESD immunity per IEC 61000-4-2 level 4 (15 kV air / 8 kV contact).
Technical Context
This TVS diode operates as a voltage-clamping protection device in series with sensitive downstream circuitry, activating above its 28.2 V stand-off threshold to shunt transient energy to ground. Its passivated anisotropic rectifier structure ensures stable leakage (<1 μA at VWM, TJ = 150 °C) and low capacitance, critical for high-speed signal line protection.
The device is rated for 600 W peak pulse power under 10/1000 μs waveform, with thermal resistance of 145 °C/W (junction-to-ambient) and 20 °C/W (junction-to-mount), enabling reliable operation on minimum recommended PCB pad layout or infinite heatsink mounting configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V - defines precise clamping activation range; ensures robust margin above 28.2 V operating rail |
| VWM | 28.2 V - maximum continuous reverse working voltage; sets safe operating ceiling before conduction |
| IPPM (10/1000 μs) | 13.1 A - peak surge current it can safely divert without degradation; determines protection headroom |
| VC @ IPPM | 45.7 V - clamped voltage during full-rated surge; limits stress on protected ICs or MOSFETs |
| TJ max | +185 °C - enables use in under-hood automotive environments and high-temperature industrial enclosures |
| ESD rating | IEC 61000-4-2 level 4: 15 kV air / 8 kV contact - qualifies for direct interface with exposed connectors and buttons |
| Package | DO-221AC (SlimSMA) - 0.95 mm profile supports ultra-thin designs and automated SMT placement |
Pinout & Package
DO-221AC (SlimSMA) package: surface-mount, bi-terminal, 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, J-STD-002 solderable, MSL Level 1 (260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to system ground or return path; completes clamping loop during transient events |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., sensor output, CAN bus, power rail); carries surge current into device |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress - suitable for engine control, ADAS, and body electronics |
| Junction passivation | Optimized anisotropic rectifier design minimizes leakage drift over temperature and lifetime - maintains VWM stability up to 150 °C |
| Low-profile height | 0.95 mm typical - enables routing under connectors and integration into space-constrained modules like ECUs and IoT edge nodes |
| MSL Level 1 | Reflow-compatible up to 260 °C peak without preconditioning - eliminates moisture sensitivity handling overhead in production |
| Halogen-free & RoHS | HM3 suffix confirms compliance with environmental regulations and whisker resistance (JESD201 Class 2) |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between sensor output and microcontroller ADC input to limit transient overvoltage. Use Value: Prevents ADC saturation and latch-up by clamping surges to ≤45.7 V while maintaining <1 μA leakage at 28.2 V nominal rail. |
Use Scenario: Safeguarding RS-485 transceiver data lines in factory automation PLCs subjected to EFT bursts and ground potential differences. IC Role / Device Role / Timing Role: Uni-directional TVS connected from differential bus line to ground to absorb common-mode transients without affecting signal integrity. Use Value: Enables reliable 10 Mbps communication under IEC 61000-4-4 level 4 (4 kV) by limiting clamped voltage below transceiver absolute max ratings. |
| Telecom Power Rail Protection | Consumer USB Port ESD Suppression |
|
Use Scenario: Guarding 24 V DC input rails of VoIP gateways and base station backhaul equipment against lightning-induced surges on PoE or AC/DC adapter inputs. IC Role / Device Role / Timing Role: Primary-stage TVS mounted at board edge to shunt bulk surge energy before DC-DC converters and LDOs. Use Value: Handles 600 W (10/1000 μs) pulses without failure, reducing need for secondary protection stages and lowering BOM cost. |
Use Scenario: Integrated ESD protection on USB 2.0 D+/D− lines of smart speakers and set-top boxes where compactness and high-reliability are mandatory. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector to clamp human-body-model discharges before USB PHY. Use Value: Meets IEC 61000-4-2 level 4 (15 kV air, 8 kV contact) while adding <0.5 pF parasitic capacitance - no signal integrity impact at 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A | Same VWM (28.2 V), but higher VC (53.3 V), lower IPPM (11.2 A), and larger SMA package (2.2 mm height) | Lacks AEC-Q101 qualification; not validated for automotive under-hood use | Prefer TA6F33AHM3/6B for automotive or high-reliability industrial deployments requiring 185 °C operation and MSL Level 1. |
| 1.5SMC33A | Higher power (1500 W), larger DO-214AB package (4.5 mm height), same VWM/VC specs, but no AEC-Q101 or SlimSMA footprint | Better for high-energy surges but incompatible with thin-profile or automated placement constraints | Choose TA6F33AHM3/6B when board thickness <1.2 mm or reflow process requires MSL Level 1 compatibility and halogen-free compliance. |
Compared with SMAJ33A and 1.5SMC33A, TA6F33AHM3/6B delivers identical clamping performance in a 0.95 mm profile with automotive-grade qualification, making it optimal for space-constrained, high-temperature, and safety-critical signal-line protection where legacy packages cannot fit or qualify.
Availability
TA6F33AHM3/6B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom power rail safeguarding requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for TA6F33AHM3/6B 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 TA6F series belongs to Vishay's PAR® family of high-temperature, surface-mount TVS diodes engineered specifically for robust transient suppression in harsh environments - emphasizing AEC-Q101 compliance, slim packaging, and stable parametric performance across -65 °C to +185 °C.
FAQ
What is the exact breakdown voltage range for TA6F33AHM3/6B?
The TA6F33AHM3/6B has a guaranteed breakdown voltage (VBR) range of 31.4 V to 34.7 V at 1.0 mA test current, measured per the Vishay datasheet (Doc. #89939). This range ensures consistent clamping behavior across production lots and temperature extremes, and is distinct from the 28.2 V stand-off voltage (VWM) at which the device remains non-conductive during normal operation.
Is TA6F33AHM3/6B suitable for automotive under-hood applications?
Yes, TA6F33AHM3/6B is AEC-Q101 qualified and rated for a maximum junction temperature of +185 °C, making it suitable for under-hood automotive applications such as engine control modules and transmission sensors. Its DO-221AC package, halogen-free construction, and MSL Level 1 reflow compatibility further support deployment in demanding automotive manufacturing and operational environments.
What does the "HM3/6B" suffix indicate in TA6F33AHM3/6B?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance, while "6B" specifies packaging in 13-inch diameter plastic tape and reel with a base quantity of 14,000 units. This distinguishes TA6F33AHM3/6B from variants like HM3/6A (7-inch reel, 3,500 units) and confirms full compliance with automotive and industrial environmental and assembly requirements.
How does TA6F33AHM3/6B compare to standard SMAJ-series TVS diodes?
TA6F33AHM3/6B offers identical electrical specs (VWM, VC, PPPM) to SMAJ33A but in a thinner DO-221AC (SlimSMA) package (0.95 mm vs. 2.2 mm), with AEC-Q101 qualification, 185 °C TJ max, and MSL Level 1 rating. Unlike SMAJ33A, TA6F33AHM3/6B is validated for automotive use and optimized for high-density, high-reliability layouts where height and qualification matter.
What is the maximum clamping voltage of TA6F33AHM3/6B during a 10/1000 μs surge?
The maximum clamping voltage (VC) of TA6F33AHM3/6B is 45.7 V at its rated peak pulse current (IPPM) of 13.1 A under a 10/1000 μs waveform. This value is measured per the Vishay datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case transient events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
TA6F33AHM3/6B 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):
- 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)
TA6F33AHM3/6B FAQ
1.How can I place an order for TA6F33AHM3/6B through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F33AHM3/6B 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 TA6F33AHM3/6B reliable?
The price and inventory of TA6F33AHM3/6B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F33AHM3/6B is usually 5 days.
3.What payment methods are accepted for TA6F33AHM3/6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F33AHM3/6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F33AHM3/6B?
TA6F33AHM3/6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F33AHM3/6B 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 TA6F33AHM3/6B?
For technical support, including TA6F33AHM3/6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F33AHM3/6B requirements.
6.How does Aetrix verify that TA6F33AHM3/6B is sourced from the original manufacturer or authorized distributors?
All TA6F33AHM3/6B 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 TA6F33AHM3/6B meets industry standards.
7.What is the process for return or replacement of TA6F33AHM3/6B?
All TA6F33AHM3/6B units undergo pre-shipment inspection (PSI). If there is an issue with TA6F33AHM3/6B, 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 TA6F33AHM3/6B part is unused and in its original packaging.
Return procedure for TA6F33AHM3/6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F33AHM3/6B Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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