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Vishay General Semiconductor - Diodes Division SMA6F7.5A-M3/6A
- Part No.:
- SMA6F7.5A-M3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F7.5A-M3/6A.pdf
- Description:
- TVS DIODE 7.5VWM 17VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,327
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Product details
Overview
SMA6F7.5A-M3/6A 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 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1 mA, 11.8 V maximum clamping voltage (VC) at 50 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). It is used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMA6F7.5A-M3/6A datasheet, SMA6F7.5A-M3/6A pinout, SMA6F7.5A-M3/6A application, or SMA6F7.5A-M3/6A equivalent, key selection criteria include clamping voltage at rated surge current, leakage current at 7.5 V, thermal resistance (RθJA = 120–150 °C/W), unidirectional polarity, and SlimSMA package compatibility with automated SMT assembly.
Technical Context
This TVS diode operates as a voltage-clamped overvoltage protection device, triggered when reverse voltage exceeds its 7.5 V stand-off threshold. Its silicon avalanche structure provides fast response (< 1 ns) to transient events such as inductive switching spikes and ESD, with clamping action governed by dynamic resistance (RD = 0.051 Ω) and breakdown voltage temperature coefficient (αT = 6.5 × 10⁻⁴ /°C).
The device is rated for 175 °C maximum junction temperature and meets J-STD-020 MSL Level 1 moisture sensitivity. It delivers 600 W peak pulse power under 10/1000 μs waveform and 4 kW under 8/20 μs waveform, with thermal derating applied above TA = 25 °C per published curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 8.33 V / 9.21 V at 1 mA - Ensures reliable turn-on within defined tolerance band |
| VC @ IPPM | 11.8 V at 50 A (10/1000 μs) - Limits protected circuit voltage during worst-case surge |
| ID @ VWM | 50 μA max - Low leakage preserves signal integrity and power efficiency |
| PPPM (10/1000 μs) | 600 W - Sustains high-energy transients without failure on standard FR4 PCB |
| RθJA | 120–150 °C/W - Determines thermal rise under sustained power dissipation |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - Validated immunity for end-equipment compliance |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads, MSL Level 1, 260 °C reflow peak. Cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal under forward bias; connected to system ground in unidirectional TVS configuration | Provides low-impedance path to ground during transient clamping |
| Cathode | Current exit terminal under forward bias; connected to protected line (e.g., VCC or signal) | Defines polarity - must be placed between protected node and ground to suppress positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.95 mm typical height) | Enables use in space-constrained portable and dense PCB layouts without mechanical interference |
| Unidirectional operation | Protects against positive-going transients only; avoids false triggering on negative signal swings |
| Peak pulse power: 600 W (10/1000 μs) | Handles common lightning-induced surges and inductive kickback in industrial control systems |
| ESD capability: IEC 61000-4-2 Level 4 | Meets stringent end-equipment immunity requirements for consumer, telecom, and industrial products |
| Matte tin-plated leads, J-STD-002 solderable | Ensures robust solder joint formation and long-term interconnect reliability in automated assembly |
Applications
| Industrial Motor Control | Telecom Power Supply |
|---|---|
Use Scenario: Protecting gate drivers and microcontrollers from inductive voltage spikes generated by relay or solenoid switching in PLC modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus or logic input lines to clamp transients below IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces while maintaining < 50 μA leakage at nominal 7.5 V rail. | Use Scenario: Safeguarding DC-DC converter inputs and Ethernet PHY power rails against ESD events and AC-line coupled surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V or 48 V intermediate bus to limit transient overshoot during hot-swap or lightning test conditions. Use Value: Delivers 11.8 V clamping at 50 A ensures downstream regulators remain within safe SOA, supporting IEC 61000-4-5 compliance. |
| Automotive Body Electronics | Consumer Sensor Interface |
Use Scenario: Shielding LIN bus transceivers and LED driver ICs from load dump and jump-start induced transients in cabin control units. IC Role / Device Role / Timing Role: Unidirectional TVS on 12 V supply line upstream of LDOs, sized for automotive-grade thermal cycling and humidity resistance. Use Value: SlimSMA package withstands automotive reflow profiles (260 °C peak), and 175 °C TJ rating supports under-hood ambient operation. | Use Scenario: Guarding analog outputs of temperature/humidity sensors against ESD during handling and connector mating in smart home devices. IC Role / Device Role / Timing Role: Low-capacitance TVS on 3.3 V I²C or analog output lines, minimizing signal distortion while meeting IEC 61000-4-2 Level 4. Use Value: 50 μA leakage at 7.5 V avoids loading precision reference paths; 0.95 mm height enables co-placement with 0402/0603 passives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F7.0A-M3/6A | Lower VWM (7.0 V), VBR min/max = 7.78–8.59 V, VC = 11.2 V @ 55 A | Better suited for 7 V nominal rails; tighter clamping but higher risk of nuisance conduction near VWM | Select when system nominal voltage is ≤ 7.0 V and margin to VBR is critical |
| SMA6F8.0A-M3/6A | Higher VWM (8.0 V), VBR min/max = 8.89–9.83 V, VC = 12.8 V @ 45 A | Improved noise immunity on 8 V+ rails; trades clamping voltage for reduced leakage (20 μA vs. 50 μA) | Select when protecting 8 V logic or higher-voltage analog circuits where lower ID is prioritized |
Compared with SMA6F7.0A-M3/6A and SMA6F8.0A-M3/6A, the SMA6F7.5A-M3/6A offers balanced trade-offs: mid-range VWM for 7.5 V systems, moderate clamping voltage (11.8 V), and verified 50 μA leakage-making it optimal for general-purpose 7–8 V rail protection where both surge robustness and DC stability matter.
Availability
SMA6F7.5A-M3/6A is available at Aetrix Electronics and suitable for industrial motor control, telecom power supply design, and automotive body electronics requiring stable component supply, consistent MSL Level 1 handling, and RoHS-compliant sourcing.
Supply support for SMA6F7.5A-M3/6A 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, thermal performance, and automotive qualification.
The SMA6F series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in space-constrained, high-reliability applications across industrial, telecom, and automotive sectors.
FAQ
What is the maximum clamping voltage of the SMA6F7.5A-M3/6A under a 10/1000 μs surge?
The SMA6F7.5A-M3/6A has a maximum clamping voltage (VC) of 11.8 V at 50 A under the 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C) and defines the upper voltage limit imposed on protected circuitry during a specified transient event. The SMA6F7.5A-M3/6A achieves this clamping performance using an avalanche-based silicon junction with a dynamic resistance of 0.051 Ω.
Does the SMA6F7.5A-M3/6A support automated SMT placement?
Yes, the SMA6F7.5A-M3/6A is optimized for automated surface-mount placement. Its SlimSMA (DO-221AC) package features a very low profile (typical height 0.95 mm), matte tin-plated leads compliant with J-STD-002, and MSL Level 1 rating-ensuring compatibility with standard reflow profiles up to 260 °C peak. The SMA6F7.5A-M3/6A is supplied in 7" tape-and-reel (3500 pcs) for pick-and-place integration.
Is the SMA6F7.5A-M3/6A unidirectional or bidirectional?
The SMA6F7.5A-M3/6A is a unidirectional transient voltage suppressor, meaning it conducts and clamps only during positive voltage excursions relative to its cathode. Polarity is marked by a color band on the cathode end. It is not rated for reverse-biased surge suppression. This behavior is confirmed in the Vishay datasheet revision 17-Sep-2021, which explicitly states "Unidirectional only" under FEATURES.
What is the leakage current specification for SMA6F7.5A-M3/6A at its stand-off voltage?
The SMA6F7.5A-M3/6A exhibits a maximum reverse leakage current (ID) of 50 μA at its 7.5 V stand-off voltage (VWM), tested at TA = 25 °C. This low leakage ensures minimal power loss and signal integrity impact in always-on or battery-powered applications. The SMA6F7.5A-M3/6A maintains this spec across its full operating temperature range per published derating curves.
Can SMA6F7.5A-M3/6A be used in automotive applications?
Yes, the SMA6F7.5A-M3/6A is suitable for automotive body electronics applications including LIN bus protection and LED driver input stages. It meets MSL Level 1, operates from –55 °C to +175 °C junction temperature, and is halogen-free and RoHS-compliant. While not AEC-Q200 qualified out-of-box, its thermal and electrical specs align with common automotive subsystem requirements-design validation per vehicle-level EMC and environmental tests is recommended. The SMA6F7.5A-M3/6A is widely deployed in non-safety-critical cabin modules.
SMA6F7.5A-M3/6A 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 235A (8/20µs)
- Power - Peak Pulse:
- 4000W (4kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-221AC (SlimSMA)
SMA6F7.5A-M3/6A FAQ
1.How can I place an order for SMA6F7.5A-M3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F7.5A-M3/6A 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 SMA6F7.5A-M3/6A reliable?
The price and inventory of SMA6F7.5A-M3/6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6F7.5A-M3/6A is usually 5 days.
3.What payment methods are accepted for SMA6F7.5A-M3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F7.5A-M3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F7.5A-M3/6A?
SMA6F7.5A-M3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F7.5A-M3/6A 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 SMA6F7.5A-M3/6A?
For technical support, including SMA6F7.5A-M3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F7.5A-M3/6A requirements.
6.How does Aetrix verify that SMA6F7.5A-M3/6A is sourced from the original manufacturer or authorized distributors?
All SMA6F7.5A-M3/6A 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 SMA6F7.5A-M3/6A meets industry standards.
7.What is the process for return or replacement of SMA6F7.5A-M3/6A?
All SMA6F7.5A-M3/6A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F7.5A-M3/6A, 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 SMA6F7.5A-M3/6A part is unused and in its original packaging.
Return procedure for SMA6F7.5A-M3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6F7.5A-M3/6A Tags
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