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Vishay General Semiconductor - Diodes Division SMA6F8.0A-M3/6A
- Part No.:
- SMA6F8.0A-M3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F8.0A-M3/6A.pdf
- Description:
- TVS DIODE 8VWM 18.2VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,763
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Product details
Overview
SMA6F8.0A-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 a 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR) at 10 mA, 12.8 V maximum clamping voltage (VC) at 46.9 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 SMA6F8.0A-M3/6A datasheet, SMA6F8.0A-M3/6A pinout, SMA6F8.0A-M3/6A application, or SMA6F8.0A-M3/6A equivalent, key selection criteria include clamping performance under 10/1000 μs surges, low-profile SlimSMA footprint compatibility with automated placement, unidirectional polarity for DC rail protection, thermal derating above 25 °C, and compliance with JESD201 class 2 whisker resistance and RoHS/halogen-free requirements.
Technical Context
This TVS diode operates as a Zener-based overvoltage clamp, activating when reverse voltage exceeds its breakdown threshold to shunt surge current away from protected circuitry. Its unidirectional configuration supports DC-biased lines only, with cathode marked by a band and anode connected to ground or return path.
Thermal performance is defined by RθJA = 120–150 °C/W (FR4 PCB, 2 oz. copper), junction temperature range of –55 °C to +175 °C, and power dissipation derated linearly above 25 °C to 0 W at 150 °C ambient. It meets MSL level 1 per J-STD-020 with peak reflow at 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 8.89 V / 9.83 V at 10 mA - Ensures reliable turn-on within tight tolerance for predictable protection threshold |
| VC @ IPP | 12.8 V at 46.9 A (10/1000 μs) - Limits downstream voltage stress during typical lightning-induced surges |
| PPPM (10×1000 μs) | 600 W - Sustains short-duration high-energy transients without failure |
| ID @ VWM | 20 μA max - Minimal leakage preserves efficiency in low-power standby circuits |
| TJ max | +175 °C - Enables operation in under-hood automotive or industrial environments |
| ESD rating | IEC 61000-4-2 level 4: 15 kV air / 8 kV contact - Protects against human-body-model electrostatic discharge |
Pinout & Package
Package: SlimSMA (DO-221AC), ultra-low profile (0.95 mm typical height), halogen-free, RoHS-compliant, matte tin-plated leads, MSL level 1, JESD201 class 2 whisker resistant. Cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during clamping | Connected to ground or low-impedance return path to complete surge current loop |
| Cathode | Protected line connection | Connected to the line being safeguarded (e.g., 5 V rail, USB VBUS, sensor supply); marked with band |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.95 mm) | Enables use in space-constrained portable electronics and stacked PCB assemblies without mechanical interference |
| 600 W peak pulse power (10/1000 μs) | Handles common IEC 61000-4-5 surge events on 3.3 V–12 V DC rails without degradation |
| Unidirectional polarity | Optimized for DC-coupled applications where reverse conduction must be blocked during normal operation |
| IEC 61000-4-2 level 4 ESD | Eliminates need for additional discrete ESD protection on exposed ports like USB, HDMI, or front-panel buttons |
| Matte tin plating, J-STD-002 compliant | Ensures robust solder joint reliability across lead-free reflow profiles including peak 260 °C |
Applications
| Industrial Sensor Interface | USB Power Line Protection |
|---|---|
Use Scenario: Protecting analog input stages of PLC I/O modules from switching transients induced by solenoid valves or relay coils. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor supply rail and ground, clamping spikes before they reach ADC front-end or op-amp buffers. Use Value: Prevents latch-up or permanent damage to precision signal conditioning ICs while maintaining <20 μA leakage at 8.0 V nominal rail. | Use Scenario: Safeguarding VBUS line of USB 2.0 Type-A receptacles against hot-plug surges and ESD events during field deployment. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between VBUS and GND, activated only during overvoltage conditions to divert >46 A surge current. Use Value: Maintains 8.0 V system compatibility, clamps to ≤12.8 V during 10/1000 μs transients, and survives repeated 15 kV air-gap discharges without parameter shift. |
| Automotive Body Control Module | Consumer Appliance Power Supply |
Use Scenario: Shielding LIN bus power pins and microcontroller supply inputs from load-dump and jump-start transients in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Primary clamping device on 12 V-derived 8 V auxiliary rail, coordinated with upstream fuse and downstream LDO. Use Value: Withstands 175 °C junction temperature and delivers 600 W surge handling in compact SlimSMA footprint compatible with automotive reflow standards. | Use Scenario: Suppressing inductive kickback from AC motor drivers and relay coils in washing machine control boards. IC Role / Device Role / Timing Role: Parallel-connected TVS on 8 V logic supply, absorbing energy from coil de-energization pulses before reaching MCU or gate drivers. Use Value: Provides 12.8 V clamping ceiling and 20 μA leakage at room temperature-critical for meeting Energy Star standby power limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F8.0A-M3/6B | Same electrical specs; differs only in tape-and-reel packaging (14,000 pcs/reel vs. 3,500 pcs/reel) | No functional difference; selected for high-volume automated assembly requiring larger reels | Choose SMA6F8.0A-M3/6B when optimizing for feeder change frequency and line uptime in mass production. |
| SMAJ8.0A-M3/6A | Lower PPPM (400 W vs. 600 W), higher VC (12.0 V vs. 12.8 V at same IPP), identical VWM/VBR and package | Less robust for high-energy surges but sufficient for lower-risk consumer-grade interfaces | Select SMAJ8.0A-M3/6A only if system-level testing confirms 400 W rating meets IEC 61000-4-5 margin requirements. |
Compared with SMA6F8.0A-M3/6A, SMA6F8.0A-M3/6B offers identical protection performance with optimized logistics for volume manufacturing, while SMAJ8.0A-M3/6A trades 33 % lower surge capacity for cost-sensitive designs where full 600 W headroom is unnecessary.
Availability
SMA6F8.0A-M3/6A is available at Aetrix Electronics and suitable for industrial sensor interface, USB power line protection, automotive body control module, and consumer appliance power supply applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMA6F8.0A-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 application-specific optimization.
The SMA6F series is engineered for high-energy transient suppression in space-constrained, high-reliability DC power and signal line applications-particularly where low-profile mounting, automated assembly, and stringent ESD immunity are mandatory.
FAQ
What is the maximum clamping voltage of the SMA6F8.0A-M3/6A under a 10/1000 μs surge?
The SMA6F8.0A-M3/6A has a maximum clamping voltage (VC) of 12.8 V when subjected to a 46.9 A peak pulse current with a 10/1000 μs waveform. This value is measured at TA = 25 °C and ensures downstream components experience limited overvoltage stress during standardized surge events. The SMA6F8.0A-M3/6A maintains this clamping performance across its specified operating temperature range, with derating applied above 25 °C per the published power dissipation curve.
Is the SMA6F8.0A-M3/6A suitable for bidirectional signal line protection?
No, the SMA6F8.0A-M3/6A is a unidirectional TVS diode and is not suitable for bidirectional signal line protection such as RS-485 or CAN bus. It conducts only in reverse bias above VBR and blocks forward current beyond VF ≈ 1.2 V. For bidirectional applications, a symmetric device like the SMBJ8.0CA or equivalent dual-diode configuration is required. The SMA6F8.0A-M3/6A is intended exclusively for DC-coupled, polarity-defined lines like power rails or unidirectional digital I/O.
What is the thermal resistance junction-to-ambient (RθJA) for the SMA6F8.0A-M3/6A?
The SMA6F8.0A-M3/6A has a typical thermal resistance junction-to-ambient (RθJA) of 120 °C/W and a maximum of 150 °C/W when mounted on a standard FR4 PCB with 2 oz. copper. This value assumes the recommended SlimSMA pad layout per the datasheet and is critical for calculating safe operating area under sustained power dissipation. At TA = 55 °C, the device's power dissipation rating drops to 8 W, and it must be thermally managed accordingly in enclosed or high-ambient environments.
Does the SMA6F8.0A-M3/6A meet automotive AEC-Q200 requirements?
No, the SMA6F8.0A-M3/6A is not AEC-Q200 qualified. While it operates from –55 °C to +175 °C and is used in automotive body control modules, Vishay does not list this part as AEC-Q200 stress-tested or certified. For automotive-grade qualification, engineers should select the equivalent AEC-Q200-compliant variant-such as the SMA6F8.0AHE3/6A-if compliance with temperature cycling, humidity bias, and mechanical shock requirements is mandatory for the target application.
How does the M3/6A suffix affect the electrical characteristics of the SMA6F8.0A-M3/6A?
The M3/6A suffix on SMA6F8.0A-M3/6A indicates halogen-free, RoHS-compliant construction (M3) and packaging in 7-inch diameter plastic tape-and-reel with 3,500 units per reel (6A). It does not alter electrical parameters-VWM, VBR, VC, PPPM, and leakage remain identical to other SMA6F8.0A variants. The M3 designation also confirms compliance with JESD201 class 2 whisker resistance and JEDEC MSL level 1 moisture sensitivity, ensuring robustness in lead-free reflow processes.
SMA6F8.0A-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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 220A (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)
SMA6F8.0A-M3/6A FAQ
1.How can I place an order for SMA6F8.0A-M3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F8.0A-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 SMA6F8.0A-M3/6A reliable?
The price and inventory of SMA6F8.0A-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 SMA6F8.0A-M3/6A is usually 5 days.
3.What payment methods are accepted for SMA6F8.0A-M3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F8.0A-M3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F8.0A-M3/6A?
SMA6F8.0A-M3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F8.0A-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 SMA6F8.0A-M3/6A?
For technical support, including SMA6F8.0A-M3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F8.0A-M3/6A requirements.
6.How does Aetrix verify that SMA6F8.0A-M3/6A is sourced from the original manufacturer or authorized distributors?
All SMA6F8.0A-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 SMA6F8.0A-M3/6A meets industry standards.
7.What is the process for return or replacement of SMA6F8.0A-M3/6A?
All SMA6F8.0A-M3/6A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F8.0A-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 SMA6F8.0A-M3/6A part is unused and in its original packaging.
Return procedure for SMA6F8.0A-M3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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