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Vishay General Semiconductor - Diodes Division SMA6F26A-M3/H
- Part No.:
- SMA6F26A-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F26A-M3/H.pdf
- Description:
- 600W,26V 5%,UNIDIR,SLIM SMA TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,010
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Product details
Overview
SMA6F26A-M3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SlimSMA (DO-221AC) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 26 V stand-off voltage (VWM), 42.0 V maximum clamping voltage (VC) at 14.3 A (10/1000 μs), 600 W peak pulse power rating, and IEC 61000-4-2 Level 4 ESD immunity (15 kV air / 8 kV contact).
For engineers reviewing the SMA6F26A-M3/H datasheet, SMA6F26A-M3/H pinout, SMA6F26A-M3/H application, or SMA6F26A-M3/H equivalent, this page delivers verified electrical parameters, mechanical dimensions, thermal derating behavior, real-world clamping performance, and direct alternative options for circuit protection design.
Technical Context
This TVS diode operates as a unidirectional clamping device with a breakdown voltage range of 28.9–31.9 V at 1.0 mA test current. Its low dynamic resistance (0.706 Ω) ensures rapid voltage limiting during transient events, while its 175 °C maximum junction temperature supports operation in high-temperature industrial environments.
The device uses a Zener-based avalanche structure optimized for fast response (<1 ns) to ESD and surge events. Its SlimSMA (DO-221AC) package provides a typical height of 0.95 mm and meets J-STD-020 MSL Level 1, enabling compatibility with standard reflow profiles up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR (min/max) | 28.9 V / 31.9 V - Breakdown initiates within this range at 1.0 mA, defining turn-on threshold |
| VC @ IPP = 14.3 A | 42.0 V - Clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM (10/1000 μs) | 600 W - Peak transient energy absorption capability under standard lightning waveform |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - Validated human-body-model robustness |
| RθJA | 120–150 °C/W - Thermal resistance from junction to ambient on FR4 PCB, critical for power derating |
| TJ max. | 175 °C - Enables reliable operation in under-hood automotive or industrial power supply environments |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, halogen-free, RoHS-compliant, M3 suffix (JESD 201 Class 2 whisker tested), matte tin-plated leads, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or lower-potential node in unidirectional protection configuration |
| Cathode | Current exit terminal during forward conduction; clamping node during reverse transients | Connected to protected line (e.g., USB VBUS, sensor supply); absorbs surge energy into ground path |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile | 0.95 mm typical height enables use in space-constrained portable and automotive modules |
| Automated placement compatible | Standard SlimSMA footprint supports high-speed pick-and-place without tombstoning risk |
| Low clamping ratio | VC/VWM = 1.615 ensures minimal overvoltage exposure to protected ICs during surge events |
| High surge current handling | 14.3 A (10/1000 μs) and 75.0 A (8/20 μs) support robust protection against IEC 61000-4-5 surges |
| MSL Level 1 rating | Compatible with standard lead-free reflow profiles up to 260 °C peak, eliminating moisture sensitivity concerns |
Applications
| USB Power Line Protection | Automotive Sensor Interface |
|---|---|
Use Scenario: Protecting 5 V USB VBUS lines from hot-plug transients and ESD events in portable chargers and docking stations. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and GND, clamping surges before they reach USB controller or PMIC. Use Value: Limits VBUS overshoot to ≤42.0 V during 14.3 A transients, preserving USB compliance and preventing latch-up in connected devices. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry point to shunt inductive kickback from solenoids or relays. Use Value: Withstands 600 W (10/1000 μs) surges and maintains <0.2 μA leakage at 26 V, ensuring signal integrity and low-power operation. |
| Industrial PLC I/O Module | Telecom Ethernet Port |
Use Scenario: Protecting 24 V DC input/output channels in programmable logic controllers subject to field wiring transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on each I/O line, coordinated with series impedance to limit let-through energy. Use Value: 26 V VWM matches common 24 V system rails; 175 °C TJ max supports extended operation in enclosed cabinets. | Use Scenario: Secondary-level surge suppression on 3.3 V or 5 V bias lines feeding Ethernet PHYs in base station equipment. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on power rails feeding magnetics or PHY ICs. Use Value: 0.706 Ω dynamic resistance ensures fast clamping response (<1 ns), minimizing voltage overshoot during fast-rising ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F26A-M3/6B | Same electrical specs; differs only in tape-and-reel packaging (14,000 pcs/reel vs. 3,500 pcs/reel) and package code "6B" instead of "H" | No functional difference; identical SlimSMA (DO-221AC) mechanical and thermal performance | Select SMA6F26A-M3/6B for high-volume automated assembly requiring larger reel quantities |
| SMAJ26A-M3/A | Higher PPPM (400 W vs. 600 W), larger SMA (DO-214AC) package (2.3 mm height), higher RθJA (~140 °C/W), same VWM/VC ratings | Less suitable for ultra-thin designs; better suited for less space-constrained industrial boards where thermal mass aids dissipation | Choose SMAJ26A-M3/A only when board layout allows taller profile and higher thermal resistance is acceptable |
Compared with SMA6F26A-M3/H, SMA6F26A-M3/6B offers identical protection performance in a different reel format, while SMAJ26A-M3/A trades compactness and thermal efficiency for slightly lower surge rating and larger footprint-making SMA6F26A-M3/H optimal for modern miniaturized, thermally demanding designs.
Availability
SMA6F26A-M3/H is available at Aetrix Electronics and suitable for USB power line protection, automotive sensor interface, industrial PLC I/O modules, and telecom Ethernet port designs requiring stable component supply and guaranteed long-term sourcing.
Supply support for SMA6F26A-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, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific optimization.
The SMA6FxxA family is engineered for high-efficiency transient suppression in space-constrained, high-reliability applications-including automotive, industrial, and consumer electronics-where low-profile mounting and robust ESD/surge immunity are mandatory.
FAQ
What is the maximum clamping voltage of the SMA6F26A-M3/H under a 10/1000 μs surge?
The SMA6F26A-M3/H has a maximum clamping voltage (VC) of 42.0 V when subjected to a 14.3 A peak pulse current with a 10/1000 μs waveform. This value is measured per the conditions specified in the Vishay datasheet (Document Number: 89458) and reflects the actual voltage seen by protected circuitry during standardized lightning-surge testing. The SMA6F26A-M3/H maintains this clamping performance across its rated operating temperature range.
Does the SMA6F26A-M3/H meet automotive-grade reliability requirements?
The SMA6F26A-M3/H is not AEC-Q200 qualified, but it supports automotive applications through its 175 °C maximum junction temperature, MSL Level 1 moisture sensitivity rating, and robust IEC 61000-4-2 Level 4 ESD performance. It is commonly used in non-safety-critical automotive subsystems such as body control modules and sensor interfaces. For AEC-Q200-compliant alternatives, consult Vishay's Automotive TVS portfolio-SMA6F26A-M3/H itself is industrial-grade and widely deployed in under-hood environments where thermal and surge resilience are prioritized.
What is the leakage current specification for SMA6F26A-M3/H at its stand-off voltage?
At the 26 V stand-off voltage (VWM), the SMA6F26A-M3/H exhibits a maximum reverse leakage current (ID) of 0.2 μA at 25 °C, as confirmed in the Vishay electrical characteristics table. This ultra-low leakage ensures minimal power loss in always-on circuits and preserves battery life in portable systems. Leakage remains below 1.0 μA up to 85 °C, supporting stable operation across industrial temperature ranges.
Can SMA6F26A-M3/H be used in bidirectional protection configurations?
No-the SMA6F26A-M3/H is explicitly unidirectional, as stated in the Vishay datasheet. Its electrical structure and polarity marking (cathode band) support clamping only in the reverse direction. For bidirectional transient suppression, Vishay offers the SMA6F26CA-M3/H variant (center-tapped, symmetrical clamping). Using SMA6F26A-M3/H in a bidirectional arrangement would leave one polarity unprotected and may cause forward conduction failure during positive transients.
What is the thermal resistance junction-to-ambient (RθJA) for SMA6F26A-M3/H on a standard FR4 PCB?
The SMA6F26A-M3/H has a typical junction-to-ambient thermal resistance (RθJA) of 120–150 °C/W when mounted on an FR4 PCB with a 2 oz. copper standard footprint, per JEDEC 51-2A. This value governs power derating above 25 °C ambient and must be applied when calculating safe operating limits in sustained surge or high-temperature environments. The SlimSMA package's low profile contributes to this moderate RθJA, balancing compactness with thermal manageability.
SMA6F26A-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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42V
- Current - Peak Pulse (10/1000µs):
- 14.3A
- 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)
SMA6F26A-M3/H FAQ
1.How can I place an order for SMA6F26A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F26A-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 SMA6F26A-M3/H reliable?
The price and inventory of SMA6F26A-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 SMA6F26A-M3/H is usually 5 days.
3.What payment methods are accepted for SMA6F26A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F26A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F26A-M3/H?
SMA6F26A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F26A-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 SMA6F26A-M3/H?
For technical support, including SMA6F26A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F26A-M3/H requirements.
6.How does Aetrix verify that SMA6F26A-M3/H is sourced from the original manufacturer or authorized distributors?
All SMA6F26A-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 SMA6F26A-M3/H meets industry standards.
7.What is the process for return or replacement of SMA6F26A-M3/H?
All SMA6F26A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F26A-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 SMA6F26A-M3/H part is unused and in its original packaging.
Return procedure for SMA6F26A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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