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Vishay General Semiconductor - Diodes Division SMA6F75A-M3/I
- Part No.:
- SMA6F75A-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F75A-M3/I.pdf
- Description:
- 600W,75V 5%,UNIDIR,SLIM SMA TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,957
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Product details
Overview
SMA6F75A-M3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) in SlimSMA (DO-221AC) package, designed for clamping voltage transients on power and signal lines. It features 75 V stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR), 120 V maximum clamping voltage (VC) at 5.0 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 SMA6F75A-M3/I datasheet, SMA6F75A-M3/I pinout, SMA6F75A-M3/I application, or SMA6F75A-M3/I equivalent, this device serves as a low-profile (0.95 mm height), RoHS-compliant, halogen-free TVS diode optimized for automated placement and high-reliability protection of MOSFETs, ICs, and sensor signal lines in industrial and telecom systems.
Technical Context
The SMA6F75A-M3/I operates as a unidirectional Zener-based TVS diode, triggering when reverse voltage exceeds its 75 V stand-off threshold and clamping transients to ≤120 V at 5.0 A (10/1000 μs). Its dynamic resistance is 5.0 Ω, enabling fast response to surge events with minimal voltage overshoot.
It supports two standard surge waveforms: 600 W (10/1000 μs) and 4 kW (8/20 μs), with thermal derating above 25 °C per JEDEC 51-2A (FR4 PCB, 2 oz. copper). Junction temperature range is −55 °C to +175 °C, and MSL level 1 rating ensures compatibility with lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 83.3 V / 92.1 V at 1.0 mA - Confirmed breakdown threshold range under DC test conditions |
| VC @ IPP = 5.0 A | 120 V - Clamped voltage during 10/1000 μs surge, defining worst-case overvoltage seen by protected circuit |
| PPPM (10/1000 μs) | 600 W - Surge energy handling capability for long-duration transients like inductive switching |
| RD | 5.0 Ω - Dynamic impedance determining voltage rise per unit surge current beyond VBR |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - Validated electrostatic discharge immunity for end-equipment compliance |
| TJ max. | +175 °C - Maximum junction temperature enabling operation in high-ambient industrial environments |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, 2-terminal unidirectional configuration. Cathode denoted by color band; anode is opposite end. Height: 0.95 mm typical; footprint compatible with automated pick-and-place.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 75 V rail or signal trace); clamps to anode when voltage exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SlimSMA package | 0.95 mm height enables use in space-constrained PCB layouts without compromising thermal performance |
| High-energy surge handling | 600 W (10/1000 μs) and 4 kW (8/20 μs) ratings protect against both slow inductive spikes and fast lightning surges |
| ESD-hardened construction | IEC 61000-4-2 level 4 compliance ensures robustness against human-body and contact-mode ESD events in final assembly and field use |
| Halogen-free & RoHS-compliant | M3 suffix confirms industrial-grade material compliance with environmental regulations and solderability standards (J-STD-002/JESD22-B102) |
| MSL level 1 rating | Supports single-reflow lead-free assembly up to 260 °C peak without moisture-related delamination risk |
Applications
| Industrial Motor Control | Telecom Power Supply Input |
|---|---|
Use Scenario: Protection of gate drivers and logic inputs against voltage spikes induced by relay coil de-energization or H-bridge switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MOSFET gate and source to clamp negative-going transients and prevent gate oxide damage. Use Value: 120 V clamping at 5 A ensures gate-source voltage stays within ±20 V absolute maximum rating of common logic-level MOSFETs. | Use Scenario: Input-stage surge suppression on 48 V telecom rectifier outputs exposed to lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Primary clamping device on DC input rail, absorbing 8/20 μs surges up to 4 kW before downstream DC-DC converters. Use Value: 4 kW (8/20 μs) rating meets GR-1089-CORE Level 3 telecom surge immunity requirements for central office equipment. |
| Automotive Body Control Module | Industrial Sensor Interface |
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load-dump and jump-start transients in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional TVS connected between LIN line and ground, triggered only during positive overvoltage events. Use Value: 75 V VWM allows reliable operation across full 9–16 V automotive battery range while clamping >200 V transients. | Use Scenario: Signal-line protection for analog outputs (e.g., 4–20 mA loops) and digital interfaces (e.g., RS-485) in factory automation sensors. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector entry point to shunt ESD and cable discharge events to ground. Use Value: 5.0 Ω dynamic resistance ensures sub-100 ns response time and <120 V clamping even at 5 A surge current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F75A-M3/6B | Same electrical specs; differs only in tape-and-reel packaging (14,000 pcs/reel, 13″ diameter vs. I-suffix's 14,000 pcs/reel, 13″ diameter with different carrier tape spec) | No functional difference; identical protection performance and board-level behavior | Select based on manufacturing line feeder compatibility and preferred reel size-not electrical design impact |
| SMAJ75A-M3/5B | Higher clamping voltage (125 V @ 5.0 A), same VWM (75 V), but rated for 400 W (10/1000 μs) only - 33 % lower long-pulse energy handling | Less suitable for sustained inductive transients; better fit for cost-sensitive, lower-energy ESD-only applications | Choose SMA6F75A-M3/I when 600 W surge margin is required; select SMAJ75A-M3/5B only if system-level testing confirms 400 W sufficiency |
Compared with SMA6F75A-M3/I, the SMA6F75A-M3/6B offers identical protection with alternate packaging logistics, while the SMAJ75A-M3/5B trades 33 % peak pulse power for potentially lower cost and wider distributor availability-making it viable only where 600 W margin is not mandated by system-level surge testing.
Availability
SMA6F75A-M3/I is available at Aetrix Electronics and suitable for industrial motor control, telecom power supply input, automotive body control modules, and industrial sensor interface applications requiring stable component supply, long-term lifecycle support, and consistent M3-grade material compliance.
Supply support for SMA6F75A-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, TVS devices, and optoelectronics with emphasis on reliability, precision, and high-power handling.
The SMA6FxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh industrial, telecom, and automotive environments where compact size and repeatable clamping performance are critical.
FAQ
What is the maximum clamping voltage of the SMA6F75A-M3/I under a 10/1000 μs surge?
The SMA6F75A-M3/I has a maximum clamping voltage (VC) of 120 V when subjected to a 5.0 A peak pulse current with a 10/1000 μs waveform. This value is measured per the standard test condition specified in the Vishay datasheet (Document Number: 89458, Rev. 17-Sep-2021) and defines the upper voltage limit imposed on the protected circuit during such a transient event. The SMA6F75A-M3/I maintains this clamping performance across its qualified operating temperature range.
Does the SMA6F75A-M3/I support bidirectional transient suppression?
No, the SMA6F75A-M3/I is a unidirectional transient voltage suppressor, meaning it conducts and clamps only during positive voltage excursions relative to its cathode terminal. It does not provide symmetrical protection for both polarities. For bidirectional applications, a separate device such as the SMA6F75CA-M3/I (if available) or a dual-diode configuration would be required. The SMA6F75A-M3/I datasheet explicitly states "Unidirectional only" under FEATURES.
What is the thermal resistance junction-to-ambient (RθJA) for the SMA6F75A-M3/I on a standard FR4 PCB?
The SMA6F75A-M3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on an FR4 printed circuit board with 2 oz. copper and the standard footprint defined in the Vishay SlimSMA outline drawing. The maximum RθJA is 150 °C/W under the same conditions. This value is critical for calculating allowable power dissipation at elevated ambient temperatures using the derating curve in Figure 5 of the datasheet.
Is the SMA6F75A-M3/I compliant with lead-free reflow soldering processes?
Yes, the SMA6F75A-M3/I is qualified for lead-free reflow soldering with a maximum peak temperature of 260 °C, meeting J-STD-020 MSL level 1 requirements. Its matte tin-plated terminals comply with J-STD-002 and JESD22-B102 for solderability, and the M3 suffix confirms halogen-free, RoHS-compliant construction. No pre-baking is required prior to reflow due to its MSL level 1 classification.
How does the voltage temperature coefficient (αT) affect the breakdown voltage of the SMA6F75A-M3/I?
The SMA6F75A-M3/I has a voltage temperature coefficient (αT) of +10.6 × 10⁻⁴ /°C, meaning its breakdown voltage increases linearly with junction temperature. Using the formula VBR at TJ = VBR at 25 °C × (1 + αT × (TJ − 25)), the VBR shifts from 83.3–92.1 V at 25 °C to approximately 85.2–94.1 V at 125 °C. This positive drift ensures stable clamping margin across the full −55 °C to +175 °C operating range of the SMA6F75A-M3/I.
SMA6F75A-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):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 120V
- Current - Peak Pulse (10/1000µs):
- 5A
- 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)
SMA6F75A-M3/I FAQ
1.How can I place an order for SMA6F75A-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F75A-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 SMA6F75A-M3/I reliable?
The price and inventory of SMA6F75A-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 SMA6F75A-M3/I is usually 5 days.
3.What payment methods are accepted for SMA6F75A-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F75A-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F75A-M3/I?
SMA6F75A-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F75A-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 SMA6F75A-M3/I?
For technical support, including SMA6F75A-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F75A-M3/I requirements.
6.How does Aetrix verify that SMA6F75A-M3/I is sourced from the original manufacturer or authorized distributors?
All SMA6F75A-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 SMA6F75A-M3/I meets industry standards.
7.What is the process for return or replacement of SMA6F75A-M3/I?
All SMA6F75A-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F75A-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 SMA6F75A-M3/I part is unused and in its original packaging.
Return procedure for SMA6F75A-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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