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Vishay General Semiconductor - Diodes Division SMA6F24A-M3/I
- Part No.:
- SMA6F24A-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F24A-M3/I.pdf
- Description:
- 600W,24V 5%,UNIDIR,SLIM SMA TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,002
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Product details
Overview
SMA6F24A-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 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 39.0 V maximum clamping voltage (VC) at 15.4 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 SMA6F24A-M3/I datasheet, SMA6F24A-M3/I pinout, SMA6F24A-M3/I application, or SMA6F24A-M3/I equivalent, this device is selected for robust overvoltage protection in space-constrained DC power rails, sensor interfaces, and MOSFET gate drivers where low-profile mounting and high surge immunity are required.
Technical Context
This TVS diode operates as a unidirectional Zener-clamp device, triggered when reverse voltage exceeds its breakdown threshold. Its dynamic resistance (RD) is 0.617 Ω, enabling precise clamping with minimal voltage overshoot during transient events. The device is rated for junction temperatures up to 175 °C and meets MSL Level 1 per J-STD-020.
It delivers 600 W peak pulse power under 10/1000 μs waveform and 4 kW under 8/20 μs waveform, with thermal resistance junction-to-ambient of 120–150 °C/W on FR4 PCB. Its low profile (0.95 mm typical height) and matte tin-plated leads support automated SMT assembly and reliable solderability per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Ensures reliable turn-on within tight tolerance band |
| VC @ IPPM | 39.0 V at 15.4 A (10/1000 μs) - Limits downstream voltage stress during surge events |
| PPPM (10/1000 μs) | 600 W - Sustains high-energy transients without failure in standard PCB layout |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - Protects against human-body model discharges |
| Package | SlimSMA (DO-221AC) - 0.95 mm height enables ultra-thin board designs |
| TJ max | 175 °C - Supports operation in high-temperature industrial and automotive under-hood environments |
Pinout & Package
SlimSMA (DO-221AC) package with cathode indicated by color band; matte tin-plated leads; halogen-free, RoHS-compliant, industrial-grade construction (M3 suffix); meets JESD201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line (e.g., GND or return path) |
| Cathode | Current exit terminal during reverse clamping | Connected to higher-potential side (e.g., VCC or signal line) - marked by color band |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile | 0.95 mm typical height - fits beneath low-clearance shields and connectors |
| Automated placement compatibility | Standard SlimSMA footprint - supports high-speed pick-and-place with no special tooling |
| High surge capability | 4 kW (8/20 μs) - handles lightning-induced surges in telecom and industrial field wiring |
| Robust ESD immunity | 15 kV air / 8 kV contact - exceeds IEC 61000-4-2 Level 4 for system-level reliability |
| MSL Level 1 rating | Reflow-compatible up to 260 °C peak - eliminates pre-bake requirement for production |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Protection of microcontroller I/O pins and gate drivers from inductive kickback in 24 V solenoid and relay circuits. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed directly across MOSFET gate-source or MCU input pins. Use Value: Limits transient voltage to ≤39.0 V, preventing latch-up or oxide damage while maintaining 24 V nominal operation. | Use Scenario: Surge suppression on LIN bus lines and sensor supply rails in door modules and lighting control units. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply inputs to protect ASICs and Hall-effect sensors. Use Value: Withstands 8/20 μs surges up to 4 kW and ESD events ≥8 kV contact, meeting ISO 16750-2 Pulse 5a requirements. |
| Consumer Power Adapters | Telecom Interface Ports |
Use Scenario: Secondary-side overvoltage protection in USB-C PD and AC/DC adapter outputs. IC Role / Device Role / Timing Role: Clamp device between output rail and ground, activated only during fault conditions. Use Value: 24 V VWM ensures no leakage during normal 20–24 V operation; 39.0 V VC prevents downstream regulator overvoltage. | Use Scenario: Ethernet PHY port protection and RS-485 transceiver line clamping in base station backhaul equipment. IC Role / Device Role / Timing Role: Unidirectional TVS on differential pairs or single-ended bias lines. Use Value: Low dynamic resistance (0.617 Ω) minimizes clamping voltage rise during fast transients, preserving signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F24AHE3/52 (Vishay) | Same electrical specs; different packaging - tape/reel code "52" vs. "I"; identical SlimSMA (DO-221AC) package and M3 compliance | No functional difference; differs only in reel size (7″ vs. 13″) and ordering part number format | Select SMA6F24A-M3/I for 13″ reel volume procurement; use SMA6F24AHE3/52 for legacy 7″ reel systems or alternate distribution channels |
| SMBJ24A (Bourns) | Higher clamping voltage (43.5 V vs. 39.0 V), larger SMB (DO-214AA) package (2.3 mm height), same 600 W rating | Less suitable for ultra-low-profile designs; requires more PCB area; slightly higher voltage stress on protected ICs | Choose SMBJ24A only if SlimSMA footprint is unavailable or if existing layout accommodates taller packages and higher VC is acceptable |
Compared with SMA6F24A-M3/I, SMA6F24AHE3/52 offers identical protection performance in identical packaging but with different reel logistics, whereas SMBJ24A trades compactness and tighter clamping for broader industry availability and higher mechanical robustness in less space-constrained applications.
Availability
SMA6F24A-M3/I is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and consumer power adapter designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant TVS protection.
Supply support for SMA6F24A-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 and application-specific optimization.
The SMA6FxxA series is engineered for high-efficiency, low-profile transient suppression in DC power and signal lines across consumer, industrial, and automotive markets - prioritizing tight VBR tolerance, low clamping voltage, and automated assembly readiness.
FAQ
What is the maximum clamping voltage of the SMA6F24A-M3/I under a 10/1000 μs surge?
The SMA6F24A-M3/I has a maximum clamping voltage (VC) of 39.0 V at 15.4 A under a 10/1000 μs waveform. This value is measured per the standard test condition specified in the Vishay datasheet (Document Number: 89458), ensuring predictable overvoltage limiting during common surge events like inductive switching. The SMA6F24A-M3/I maintains this clamping performance across its full operating temperature range.
Is the SMA6F24A-M3/I suitable for automotive applications?
Yes, the SMA6F24A-M3/I is suitable for automotive body electronics applications such as LIN bus protection and sensor supply clamping. It operates across −55 °C to +175 °C junction temperature, meets IEC 61000-4-2 Level 4 ESD, and withstands 4 kW (8/20 μs) surges - aligning with ISO 16750-2 Pulse 5a requirements. The SMA6F24A-M3/I is not AEC-Q200 qualified, so system-level validation is required for safety-critical functions.
What does the "M3/I" suffix mean in SMA6F24A-M3/I?
The "M3" suffix indicates halogen-free, RoHS-compliant, industrial-grade construction with matte tin-plated leads and JESD201 Class 2 whisker resistance. The "I" denotes the preferred package code for 13″ diameter plastic tape-and-reel delivery (14,000 units per reel). This ordering designation ensures consistent material compliance and logistics compatibility. The SMA6F24A-M3/I is fully interchangeable electrically and mechanically with other M3-suffix variants in the SMA6F24A family.
How does the SMA6F24A-M3/I compare to bidirectional TVS diodes?
The SMA6F24A-M3/I is unidirectional and optimized for DC power rail and signal-line protection where polarity is fixed - offering lower leakage current and tighter VBR tolerance than equivalent bidirectional parts. Unlike bidirectional TVS diodes, it does not conduct in forward bias beyond ~1 V, making it unsuitable for AC line protection. For SMA6F24A-M3/I, the cathode band must be correctly oriented toward the higher-potential node to ensure proper clamping action.
What is the thermal resistance of the SMA6F24A-M3/I on a standard FR4 PCB?
The SMA6F24A-M3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120–150 °C/W when mounted on a standard FR4 PCB with 2 oz. copper and the recommended footprint per JEDEC 51-2A. This value supports continuous power dissipation up to 1.0 W at 25 °C ambient and derates linearly above that temperature. The SMA6F24A-M3/I's low RθJA contributes to stable clamping performance during repeated transient events without thermal runaway.
SMA6F24A-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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 39V
- Current - Peak Pulse (10/1000µs):
- 15.4A
- 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)
SMA6F24A-M3/I FAQ
1.How can I place an order for SMA6F24A-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F24A-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 SMA6F24A-M3/I reliable?
The price and inventory of SMA6F24A-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 SMA6F24A-M3/I is usually 5 days.
3.What payment methods are accepted for SMA6F24A-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F24A-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F24A-M3/I?
SMA6F24A-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F24A-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 SMA6F24A-M3/I?
For technical support, including SMA6F24A-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F24A-M3/I requirements.
6.How does Aetrix verify that SMA6F24A-M3/I is sourced from the original manufacturer or authorized distributors?
All SMA6F24A-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 SMA6F24A-M3/I meets industry standards.
7.What is the process for return or replacement of SMA6F24A-M3/I?
All SMA6F24A-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F24A-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 SMA6F24A-M3/I part is unused and in its original packaging.
Return procedure for SMA6F24A-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6F24A-M3/I Tags
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