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Vishay General Semiconductor - Diodes Division SMA6F26A-M3/I
- Part No.:
- SMA6F26A-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F26A-M3/I.pdf
- Description:
- 600W,26V 5%,UNIDIR,SLIM SMA TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,685
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Product details
Overview
SMA6F26A-M3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SlimSMA (DO-221AC) package, designed for clamping voltage transients on power and signal lines. It features 26 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 42.0 V maximum clamping voltage (VC) at 14.3 A (10/1000 μs), 600 W peak pulse power, and IEC 61000-4-2 Level 4 ESD protection (15 kV air / 8 kV contact).
For engineers reviewing the SMA6F26A-M3/I datasheet, SMA6F26A-M3/I pinout, SMA6F26A-M3/I application, or SMA6F26A-M3/I equivalent, this device is selected for robust overvoltage protection in space-constrained consumer, industrial, and telecom systems where low-profile mounting, high surge immunity, and stable leakage performance (<0.2 μA at VWM) are critical.
Technical Context
This TVS diode operates as a unidirectional Zener-clamp device, activated when reverse voltage exceeds VBR to divert transient energy away from protected circuitry. Its clamping behavior is defined by dynamic resistance (RD = 0.706 Ω) and follows VCL = RD × IPP + VBRmax, enabling predictable voltage limiting under standardized 10/1000 μs and 8/20 μs surges.
Thermal design relies on junction-to-ambient thermal resistance (RθJA ≤ 150 °C/W on FR4 PCB) and supports continuous operation up to TJ = 175 °C. The M3 suffix confirms halogen-free, RoHS-compliant construction with matte tin-plated leads meeting J-STD-002 solderability and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum steady-state reverse voltage before clamping begins; sets operating margin for 24 V rail protection. |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on above normal operating voltage. |
| VC @ IPP | 42.0 V at 14.3 A (10/1000 μs) - Clamped voltage during standard surge; guarantees downstream ICs see ≤42 V stress. |
| PPPM | 600 W (10/1000 μs), 4000 W (8/20 μs) - Peak surge handling capacity; supports IEC 61000-4-5 compliance testing. |
| ID @ VWM | ≤0.2 μA - Ultra-low leakage current at stand-off voltage; prevents parasitic loading on sensitive analog/sensor circuits. |
| TJ max. | 175 °C - Maximum junction temperature; enables use in high-ambient industrial environments without derating. |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV (air), 8 kV (contact) - Validated human-body-model immunity for front-panel and connector interfaces. |
Pinout & Package
Package: SlimSMA (DO-221AC), ultra-low-profile surface-mount case with 0.95 mm typical height, JEDEC-compliant footprint, and cathode band marking on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or lower-potential node in unidirectional clamp configuration | Completes conduction path during transient events; must be routed to low-impedance return plane for effective clamping. |
| Cathode | Current exit terminal in forward bias; connected to protected line (e.g., 24 V supply or data line) | Defines polarity-sensitive placement; color band identifies cathode end for automated optical inspection and placement verification. |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.95 mm height) | Enables integration into slim consumer devices and dense PCB layouts without mechanical interference or height clearance issues. |
| Unidirectional clamping only | Provides precise overvoltage protection on DC-biased lines (e.g., 24 V power rails, RS-485 buses) without AC signal distortion. |
| 600 W (10/1000 μs) peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial equipment and telecom infrastructure. |
| MSL Level 1, LF peak 260 °C | Supports lead-free reflow soldering without moisture-induced damage; eliminates pre-bake requirement in manufacturing. |
| M3 suffix: halogen-free & RoHS-compliant | Fulfills environmental compliance mandates for global electronics markets and simplifies supply chain qualification. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) Power Rails |
|---|---|
Use Scenario: Protecting 24 V digital input/output channels in programmable logic controllers against inductive switching spikes from solenoids and relays. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between field wiring and input buffer IC to limit transient voltage to safe levels within 1 ns response time. Use Value: Prevents latch-up and permanent damage to microcontroller GPIOs and level translators while maintaining <0.2 μA leakage at nominal 24 V operation. | Use Scenario: Safeguarding 12 V/24 V power distribution networks in body control modules from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage suppression device mounted at power entry point, shunting >100 A surges per ISO 7637-2 Pulse 5a test profile. Use Value: Limits clamped voltage to 42.0 V during 14.3 A 10/1000 μs surge, ensuring downstream PMICs and CAN transceivers remain within absolute maximum ratings. |
| Telecom Base Station Sensor Interfaces | Consumer Smart Home Hub Signal Lines |
Use Scenario: Shielding analog sensor inputs (e.g., temperature, humidity) in outdoor telecom cabinets from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Front-end transient suppressor on differential sensor lines, coordinated with common-mode chokes and secondary filtering. Use Value: Delivers 42.0 V clamping with 0.706 Ω dynamic resistance to minimize voltage overshoot and preserve signal integrity across 0–10 kHz bandwidth. | Use Scenario: Protecting USB, UART, and I²C lines in smart home hubs from ESD events during user interaction and cable hot-plug operations. IC Role / Device Role / Timing Role: Board-level ESD suppressor placed adjacent to connectors, providing IEC 61000-4-2 Level 4 immunity (8 kV contact / 15 kV air). Use Value: Ensures system-level ESD robustness without adding capacitance that degrades 400 kHz I²C timing or 12 Mbps USB 2.0 signal rise times. |
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/H | Identical electrical specs and SlimSMA package; differs only in tape-and-reel packaging (3500 pcs/reel vs. 14000 pcs/reel for /I) | Same functional use in all protection circuits; /H variant used for lower-volume prototyping or small-batch production | Select /I for high-volume manufacturing requiring extended reel length and reduced changeover frequency. |
| SMAJ26A-M3/5B | Higher RθJA (175 °C/W), lower PPPM (400 W @ 10/1000 μs), same VWM/VBR/VC but larger SMA package (DO-214AC) | Less suitable for ultra-thin designs; requires more PCB area and has higher thermal impedance on FR4 | Choose SMA6F26A-M3/I when board height <1.0 mm is mandatory and 600 W surge rating is required. |
Compared with SMA6F26A-M3/H, the /I variant offers higher reel quantity for production efficiency; versus SMAJ26A-M3/5B, it delivers 50 % higher surge power in 30 % less height, making it optimal for space- and performance-critical 24 V protection.
Availability
SMA6F26A-M3/I is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and telecommunications infrastructure requiring stable component supply, consistent M3-grade material compliance, and verified SlimSMA package reliability.
Supply support for SMA6F26A-M3/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, MOSFETs, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMA6FxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-efficiency, low-profile transient suppression in DC power and signal lines across consumer, industrial, and automotive systems.
FAQ
What is the maximum clamping voltage of the SMA6F26A-M3/I under a 10/1000 μs surge?
The SMA6F26A-M3/I has a maximum clamping voltage (VC) of 42.0 V at 14.3 A for a 10/1000 μs waveform. This value is measured per standard test conditions and reflects the actual voltage seen by protected circuitry during such a transient event. The SMA6F26A-M3/I maintains this clamping performance across its specified operating temperature range and is validated per JEDEC test methods.
Does the SMA6F26A-M3/I support lead-free reflow soldering?
Yes, the SMA6F26A-M3/I meets MSL Level 1 per J-STD-020 and supports lead-free reflow with a maximum peak temperature of 260 °C. Its M3 suffix confirms full compliance with halogen-free, RoHS-compliant materials and matte tin-plated terminals qualified to J-STD-002 and JESD22-B102. The SMA6F26A-M3/I requires no pre-bake prior to assembly.
How does the leakage current of SMA6F26A-M3/I compare to similar TVS diodes at 26 V?
The SMA6F26A-M3/I exhibits ≤0.2 μA maximum reverse leakage current (ID) at its 26 V stand-off voltage (VWM), measured at 25 °C. This ultra-low leakage is confirmed in the official Vishay datasheet and is tighter than many competing 24–28 V TVS devices, reducing parasitic loading on high-impedance sensor or reference circuits. The SMA6F26A-M3/I maintains this spec across its full operating temperature range.
Can SMA6F26A-M3/I be used in bidirectional protection circuits?
No, the SMA6F26A-M3/I is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics-including breakdown voltage, clamping behavior, and polarity marking-are specified only for reverse-bias transient suppression. For AC or dual-polarity signal lines, a dedicated bidirectional device such as SMA6F26AY-M3/I must be selected instead of the SMA6F26A-M3/I.
What is the thermal resistance junction-to-ambient for SMA6F26A-M3/I on a standard FR4 PCB?
The SMA6F26A-M3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and a maximum of 150 °C/W when mounted on a standard FR4 PCB with 2 oz. copper and the recommended footprint. This value is defined per JEDEC 51-2A and directly impacts power derating above 25 °C ambient; the SMA6F26A-M3/I supports full 8 W power dissipation at TM = 55 °C.
SMA6F26A-M3/I 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/I FAQ
1.How can I place an order for SMA6F26A-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F26A-M3/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 SMA6F26A-M3/I reliable?
The price and inventory of SMA6F26A-M3/I 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/I is usually 5 days.
3.What payment methods are accepted for SMA6F26A-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F26A-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F26A-M3/I?
SMA6F26A-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F26A-M3/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 SMA6F26A-M3/I?
For technical support, including SMA6F26A-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F26A-M3/I requirements.
6.How does Aetrix verify that SMA6F26A-M3/I is sourced from the original manufacturer or authorized distributors?
All SMA6F26A-M3/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 SMA6F26A-M3/I meets industry standards.
7.What is the process for return or replacement of SMA6F26A-M3/I?
All SMA6F26A-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F26A-M3/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 SMA6F26A-M3/I part is unused and in its original packaging.
Return procedure for SMA6F26A-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6F26A-M3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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