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Vishay General Semiconductor - Diodes Division SMA6F24A-M3/H
- Part No.:
- SMA6F24A-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F24A-M3/H.pdf
- Description:
- 600W,24V 5%,UNIDIR,SLIM SMA TVS
- Quantity:
- Payment:
- Shipping:
Inventory:1,367
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Product details
Overview
SMA6F24A-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 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 rating, and ESD immunity per IEC 61000-4-2 level 4 (15 kV air / 8 kV contact).
For engineers reviewing the SMA6F24A-M3/H datasheet, SMA6F24A-M3/H pinout, SMA6F24A-M3/H application, or SMA6F24A-M3/H equivalent, this page delivers verified electrical parameters, mechanical dimensions, thermal derating behavior, clamping performance under standardized surge waveforms, and direct alternative options for circuit protection design.
Technical Context
This TVS diode operates as a unidirectional clamping device with Zener-based avalanche breakdown. Its low dynamic resistance (0.617 Ω) ensures rapid voltage limiting during transient events, while its 175 °C maximum junction temperature supports operation in high-ambient industrial environments. The device is rated for 600 W (10/1000 μs) and 4 kW (8/20 μs) peak pulse power, enabling robust protection of downstream ICs and MOSFETs.
Designed for automated SMT assembly, the SlimSMA (DO-221AC) package offers a typical height of 0.95 mm and meets MSL level 1 per J-STD-020 with 260 °C reflow peak. Matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability standards, and the M3 suffix confirms halogen-free, RoHS-compliant, industrial-grade construction with JESD 201 class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Breakdown onset range; determines minimum overvoltage threshold for activation. |
| VC @ IPP | 39.0 V at 15.4 A (10/1000 μs) - Clamped voltage seen by protected circuit during standard surge; critical for IC survival. |
| PPPM (10/1000 μs) | 600 W - Surge energy handling capacity under IEC 61000-4-5 long-duration waveform; defines protection robustness. |
| PPPM (8/20 μs) | 4000 W - Higher-energy capability for fast-rising lightning-induced transients; enables front-end surge suppression. |
| ID @ VWM | 0.2 μA max - Reverse leakage current at stand-off voltage; ensures minimal power loss and signal integrity in standby. |
| TJ max. | 175 °C - Maximum junction temperature; allows reliable operation in automotive engine bays and industrial enclosures. |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 4.15–4.35 mm length × 2.50–2.70 mm width × 0.95 mm typical height. Complies with JEDEC DO-221AC outline and UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction; connected to ground or low-side reference in unidirectional TVS layout. | Provides return path for surge current; must be routed with low-inductance trace to minimize clamping overshoot. |
| Cathode | Current exit terminal during reverse-biased clamping; connected to protected line (e.g., USB VBUS, RS-485 A/B). | Defines polarity-sensitive placement; color band on package identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.95 mm typical height) | Enables use in space-constrained portable and wearable electronics without compromising board stacking height. |
| 600 W (10/1000 μs) & 4 kW (8/20 μs) peak pulse power | Supports dual-level surge compliance: IEC 61000-4-5 (long pulse) and lightning-fast transients in telecom infrastructure. |
| IEC 61000-4-2 level 4 ESD immunity | Guarantees 8 kV contact / 15 kV air discharge protection without external shielding-reduces system-level ESD test failures. |
| MSL level 1, 260 °C peak reflow | Eliminates moisture sensitivity concerns and enables single-pass lead-free reflow without baking or special handling. |
| M3 suffix: halogen-free, RoHS-compliant, JESD 201 class 2 whisker resistant | Meets global environmental regulations and ensures long-term solder joint reliability in high-vibration industrial deployments. |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O lines from inductive kickback generated by relay and solenoid switching in PLC modules and HVAC controllers. IC Role / Device Role: Unidirectional TVS placed between MCU GPIO and external switch node to clamp transients before they reach logic inputs. Use Value: Prevents latch-up and permanent damage to 3.3 V/5 V microcontrollers by limiting voltage to ≤39.0 V during 15.4 A surges. |
Use Scenario: Input line protection for LIN bus transceivers and door module sensors exposed to load dump and jump-start conditions. IC Role / Device Role: Stand-off clamping device on 12 V supply rail, absorbing energy from ISO 7637-2 pulse 1 and pulse 2a events. Use Value: Maintains 24 V VWM margin above nominal battery voltage while clamping to 39.0 V-preserving transceiver functionality during surges. |
| Consumer USB Power Delivery | Telecom Ethernet PHY Interface |
|
Use Scenario: Overvoltage safeguard on USB-C VBUS lines in portable chargers and power banks subjected to accidental adapter mismatches or hot-plug transients. IC Role / Device Role: Primary front-end TVS on input power path, positioned upstream of buck converter and USB PD controller. Use Value: Limits VBUS spikes to 39.0 V during 15.4 A events, preventing damage to silicon-based PD controllers rated for ≤28 V absolute maximum. |
Use Scenario: Signal line protection for 10/100/1000BASE-T Ethernet PHY differential pairs in network switches and PoE injectors. IC Role / Device Role: Discrete unidirectional TVS on each data pair (e.g., TX+/TX−), referenced to local ground plane. Use Value: Low 0.617 Ω dynamic resistance minimizes clamping delay, preserving signal integrity up to 100 MHz while meeting IEC 61000-4-5 level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F24A-M3/6B | Same electrical specs; differs only in tape-and-reel packaging code (6B = 14,000 pcs/reel, 13″ diameter vs. H = 3,500 pcs/reel, 7″ diameter). | No functional difference; identical placement, soldering, and protection performance. | Select SMA6F24A-M3/6B for high-volume production runs requiring larger reels and reduced changeover frequency. |
| SMAJ24A-M3/5B | Higher 400 W PPPM (10/1000 μs); same VWM/VBR/VC but lower peak pulse current (12.3 A vs. 15.4 A) and higher dynamic resistance (1.03 Ω vs. 0.617 Ω). | Less robust for high-energy surges; suitable only where IEC 61000-4-5 compliance is not required. | Choose SMAJ24A-M3/5B only if cost sensitivity outweighs surge margin needs and system-level testing validates adequacy. |
Compared with SMA6F24A-M3/H, SMA6F24A-M3/6B offers identical protection with optimized logistics for volume manufacturing, while SMAJ24A-M3/5B trades 33 % lower surge capacity and slower clamping response for lower unit cost-making it unsuitable as a drop-in replacement in demanding industrial or automotive applications.
Availability
SMA6F24A-M3/H is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and consumer USB power delivery applications requiring stable component supply, consistent M3-grade material compliance, and verified SlimSMA package form factor.
Supply support for SMA6F24A-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, efficiency, and application-specific optimization.
The SMA6F series is engineered for high-energy transient suppression in space-constrained SMT designs, targeting industrial automation, automotive subsystems, and consumer power interfaces where low-profile, high-power clamping is essential.
FAQ
What is the maximum clamping voltage of the SMA6F24A-M3/H under a 10/1000 μs surge?
The SMA6F24A-M3/H exhibits a maximum clamping voltage (VC) of 39.0 V when subjected to a 15.4 A peak pulse current with a 10/1000 μs waveform. This value is measured per the manufacturer's test conditions and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SMA6F24A-M3/H maintains this clamping performance across its specified operating temperature range and is validated in the official Vishay datasheet revision 17-Sep-2021.
Is the SMA6F24A-M3/H suitable for bidirectional transient protection?
No, the SMA6F24A-M3/H is explicitly a unidirectional TVS diode, as confirmed in the Vishay datasheet under FEATURES and PRIMARY CHARACTERISTICS. It conducts only in reverse breakdown mode and must be installed with correct polarity-cathode toward the protected line. For bidirectional protection, a separate part such as SMA6F24AY-M3/H (if available) or a dedicated bidirectional TVS like SMBJ24A would be required. The SMA6F24A-M3/H does not provide symmetrical clamping in both directions.
What is the thermal resistance junction-to-ambient (RθJA) for the SMA6F24A-M3/H?
The SMA6F24A-M3/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on an FR4 PCB with a 2 oz. copper standard footprint, as specified in the THERMAL CHARACTERISTICS table of the Vishay datasheet. This value is critical for calculating allowable power dissipation at elevated ambient temperatures using the derating curve in Figure 5. The SMA6F24A-M3/H also specifies a maximum RθJA of 150 °C/W under the same conditions.
Does the SMA6F24A-M3/H meet automotive AEC-Q200 stress testing requirements?
The SMA6F24A-M3/H is not qualified to AEC-Q200. While it is rated for operation from −55 °C to +175 °C and carries industrial-grade M3 certification (halogen-free, RoHS, JESD 201 class 2 whisker resistance), Vishay's official documentation does not list AEC-Q200 qualification for the SMA6F24A-M3/H. For automotive applications requiring AEC-Q200 compliance, engineers should consult Vishay's automotive-grade TVS portfolio, such as the AEC-Q200-qualified SMAJ24AHE3/A/H series, rather than relying on the SMA6F24A-M3/H.
What is the reverse leakage current specification for the SMA6F24A-M3/H at its stand-off voltage?
The SMA6F24A-M3/H has a maximum reverse leakage current (ID) of 0.2 μA at its 24 V stand-off voltage (VWM), tested at TA = 25 °C. This ultra-low leakage ensures minimal quiescent power draw and avoids signal degradation in high-impedance sensing or battery-powered circuits. The value is confirmed in the ELECTRICAL CHARACTERISTICS table for the SMA6F24A entry and applies across the full operating temperature range per datasheet note (3). The SMA6F24A-M3/H maintains this leakage performance without derating up to 85 °C.
SMA6F24A-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):
- 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/H FAQ
1.How can I place an order for SMA6F24A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F24A-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 SMA6F24A-M3/H reliable?
The price and inventory of SMA6F24A-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 SMA6F24A-M3/H is usually 5 days.
3.What payment methods are accepted for SMA6F24A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F24A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F24A-M3/H?
SMA6F24A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F24A-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 SMA6F24A-M3/H?
For technical support, including SMA6F24A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F24A-M3/H requirements.
6.How does Aetrix verify that SMA6F24A-M3/H is sourced from the original manufacturer or authorized distributors?
All SMA6F24A-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 SMA6F24A-M3/H meets industry standards.
7.What is the process for return or replacement of SMA6F24A-M3/H?
All SMA6F24A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F24A-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 SMA6F24A-M3/H part is unused and in its original packaging.
Return procedure for SMA6F24A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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