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Vishay General Semiconductor - Diodes Division SMA6F22A-M3/H
- Part No.:
- SMA6F22A-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F22A-M3/H.pdf
- Description:
- 600W,22V 5%,UNIDIR,SLIM SMA TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,545
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Product details
Overview
SMA6F22A-M3/H from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in SlimSMA (DO-221AC) package, designed to protect sensitive electronics against inductive switching transients and ESD events. It features a 22 V stand-off voltage (VWM), 24.4–26.9 V breakdown voltage (VBR), 35.5 V clamping voltage at 10/1000 μs surge, 600 W peak pulse power, and meets IEC 61000-4-2 level 4 (8 kV contact / 15 kV air).
For engineers reviewing the SMA6F22A-M3/H datasheet, SMA6F22A-M3/H pinout, SMA6F22A-M3/H application, or SMA6F22A-M3/H equivalent, this device serves as a low-profile (0.95 mm height), RoHS-compliant, halogen-free TVS diode for robust overvoltage protection on signal lines, power rails, and sensor interfaces in industrial, telecom, and consumer systems.
Technical Context
The SMA6F22A-M3/H operates as a unidirectional Zener-clamped TVS diode with fast response to transient surges. Its electrical behavior is defined by precise VBR (24.4–26.9 V @ 1 mA), VC = 35.5 V @ IPP = 16.9 A (10/1000 μs), and dynamic resistance RD = 0.509 Ω - enabling predictable clamping under standardized surge conditions.
It is rated for TJ = −55 °C to +175 °C operation, supports MSL level 1 reflow (260 °C peak), and exhibits αT = 9.6 × 10⁻⁴ /°C temperature coefficient - ensuring stable breakdown voltage across wide thermal ranges in embedded and automotive-adjacent applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 24.4 V / 26.9 V @ 1 mA - guaranteed breakdown onset range for reliable triggering |
| VC @ IPP | 35.5 V @ 16.9 A (10/1000 μs) - clamping voltage limiting downstream circuit stress during surge |
| PPPM (10×1000 μs) | 600 W - surge energy handling capacity per standard lightning waveform |
| ESD rating | IEC 61000-4-2 level 4: 8 kV contact / 15 kV air - validated electrostatic discharge immunity |
| Package | SlimSMA (DO-221AC) - ultra-low profile (0.95 mm height), surface-mount compatible with automated placement |
| TJ max | +175 °C - extended junction temperature capability for high-reliability industrial environments |
Pinout & Package
Package: SlimSMA (DO-221AC), cathode-indicated by color band; dimensions: 4.15 × 2.50 × 0.95 mm (L × W × H); matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias or surge conduction | Connected to protected line or ground return path depending on circuit topology |
| Cathode | Current exit terminal; marked by color band | Typically tied to higher-potential rail (e.g., VCC or signal line) in unidirectional clamp configuration |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile height | 0.95 mm - enables use in space-constrained PCB layouts and thin consumer devices |
| Halogen-free & RoHS | M3 suffix confirms compliance - supports environmental requirements for industrial and export markets |
| MSL level 1 | Rated for peak reflow of 260 °C - eliminates moisture sensitivity concerns during standard SMT assembly |
| High ESD immunity | 8 kV contact / 15 kV air per IEC 61000-4-2 - protects against common handling and system-level ESD events |
| Unidirectional clamping | Single-polarity suppression - optimized for DC-biased signal or power lines where reverse conduction is not required |
Applications
| Industrial Sensor Interface | Telecom Power Rail Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to relay coil kickback in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits transient-induced latch-up or damage by clamping spikes to ≤35.5 V while maintaining 22 V DC signal integrity. | Use Scenario: Safeguarding 24 V DC power inputs of VoIP gateways against lightning-induced surges on building wiring. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at board edge before DC-DC converter input. Use Value: Absorbs 600 W (10/1000 μs) surges without degradation, preserving upstream regulator and downstream logic. |
| Consumer USB Data Line | Automotive Body Control Module |
Use Scenario: ESD protection for USB 2.0 D+ and D− lines in smart home hubs subjected to frequent human contact. IC Role / Device Role / Timing Role: IEC 61000-4-2 level 4 compliant TVS on differential data pair. Use Value: Withstands 15 kV air discharge without parametric shift, ensuring signal integrity and USB enumeration reliability. | Use Scenario: Overvoltage protection for LIN bus transceiver supply pins in door module ECUs exposed to load dump transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V rail feeding LIN PHY ICs. Use Value: Clamps 22 V nominal rail to ≤35.5 V during 100 ms load dump events, preventing transceiver latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F22A-M3/6B | Different tape-and-reel packaging code (6B vs. H); identical electrical specs and SlimSMA package | No functional difference - only differs in reel size (14,000 pcs vs. 3,500 pcs) and delivery mode | Select SMA6F22A-M3/6B for high-volume production requiring larger reels and reduced changeover frequency. |
| SMAJ22A-M3/5B | Higher 400 W PPPM (10/1000 μs), larger SMA (DO-214AC) package (2.3 mm height), same VWM/VBR/VC ratings | Less suitable for ultra-thin designs; better thermal dissipation on FR4 due to larger pad area | Choose SMAJ22A-M3/5B when board layout allows taller components and higher long-duration surge margin is needed. |
Compared with SMA6F22A-M3/H, SMA6F22A-M3/6B offers identical protection performance in a different reel format, while SMAJ22A-M3/5B trades lower profile for greater surge energy handling and thermal mass - making it preferable for less space-constrained, higher-power industrial applications.
Availability
SMA6F22A-M3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom power rail protection, and consumer USB data line ESD hardening requiring stable component supply, consistent M3-grade material compliance, and SlimSMA footprint compatibility.
Supply support for SMA6F22A-M3/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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and application-specific optimization.
The SMA6F series is part of Vishay's TRANSZORB® TVS portfolio, engineered for high-speed, low-profile transient suppression in space- and cost-sensitive surface-mount applications across industrial, computing, and communications markets.
FAQ
What is the clamping voltage of the SMA6F22A-M3/H under a 10/1000 μs surge?
The SMA6F22A-M3/H has a maximum clamping voltage (VC) of 35.5 V when subjected to a 10/1000 μs surge current of 16.9 A. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuits during transient events - critical for ensuring downstream ICs remain within safe operating voltage margins. The SMA6F22A-M3/H achieves this with a dynamic resistance of 0.509 Ω.
Is the SMA6F22A-M3/H RoHS-compliant and halogen-free?
Yes, the SMA6F22A-M3/H carries the "M3" suffix, which explicitly denotes halogen-free construction, RoHS compliance, and industrial-grade qualification per Vishay's material categorization standards. This makes the SMA6F22A-M3/H suitable for environmentally regulated markets and high-reliability applications where material content restrictions apply.
What does the "H" in SMA6F22A-M3/H indicate?
Per Vishay's ordering information, the "H" in SMA6F22A-M3/H is the package code specifying a 7-inch diameter plastic tape-and-reel delivery format containing 3,500 units. It identifies the mechanical packaging variant - distinct from "I" (13-inch reel, 14,000 units) - but does not affect electrical or thermal specifications of the SMA6F22A-M3/H device itself.
Can the SMA6F22A-M3/H be used in bidirectional protection configurations?
No, the SMA6F22A-M3/H is unidirectional only, as confirmed in the Vishay datasheet features section. It conducts only in reverse bias above VBR and provides no clamping in forward direction. For bidirectional protection, a separate device such as SMA6F22CA or a back-to-back diode arrangement would be required - the SMA6F22A-M3/H must be oriented with cathode toward the protected line's higher potential.
What is the maximum operating junction temperature for the SMA6F22A-M3/H?
The SMA6F22A-M3/H has a maximum operating junction temperature (TJ max) of +175 °C, as specified in the primary characteristics table. This rating supports deployment in high-ambient environments such as enclosed industrial enclosures or under-hood automotive modules, provided PCB layout and thermal management maintain actual junction temperature below this limit during surge and steady-state operation.
SMA6F22A-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-221AC, SMA Flat Leads
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 16.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-221AC (SlimSMA)
SMA6F22A-M3/H FAQ
1.How can I place an order for SMA6F22A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F22A-M3/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 SMA6F22A-M3/H reliable?
The price and inventory of SMA6F22A-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6F22A-M3/H is usually 5 days.
3.What payment methods are accepted for SMA6F22A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F22A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F22A-M3/H?
SMA6F22A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F22A-M3/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 SMA6F22A-M3/H?
For technical support, including SMA6F22A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F22A-M3/H requirements.
6.How does Aetrix verify that SMA6F22A-M3/H is sourced from the original manufacturer or authorized distributors?
All SMA6F22A-M3/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 SMA6F22A-M3/H meets industry standards.
7.What is the process for return or replacement of SMA6F22A-M3/H?
All SMA6F22A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F22A-M3/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 SMA6F22A-M3/H part is unused and in its original packaging.
Return procedure for SMA6F22A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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