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Vishay General Semiconductor - Diodes Division SMA6F8.0A-M3/6B
- Part No.:
- SMA6F8.0A-M3/6B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F8.0A-M3/6B.pdf
- Description:
- TVS DIODE 8VWM 18.2VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,486
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Product details
Overview
SMA6F8.0A-M3/6B 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 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, and IEC 61000-4-2 level 4 ESD protection (15 kV air / 8 kV contact).
For engineers reviewing the SMA6F8.0A-M3/6B datasheet, SMA6F8.0A-M3/6B pinout, SMA6F8.0A-M3/6B application, or SMA6F8.0A-M3/6B equivalent, this device is selected for robust overvoltage protection in space-constrained consumer, industrial, and telecom systems where low-profile mounting, automated placement, and high surge immunity are required.
Technical Context
This TVS diode operates as a unidirectional clamping device with Zener-based avalanche breakdown behavior. Its electrical response is defined by three key voltage thresholds: VWM (8.0 V), VBR (8.89–9.83 V), and VC (12.8 V @ 46.9 A), enabling precise transient suppression without forward conduction during normal operation.
Thermal performance is characterized by RθJA = 120–150 °C/W (FR4 PCB, 2 oz.) and TJ max = 175 °C, supporting reliable operation under repetitive surge stress. The device meets MSL level 1 per J-STD-020 with 260 °C reflow peak and exhibits low dynamic resistance (RD = 0.063 Ω) to minimize clamping overshoot during fast transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum reverse voltage before significant leakage; defines safe operating window for protected circuitry |
| VBR (min/max) | 8.89 V / 9.83 V at 10 mA - Ensures consistent avalanche initiation across production lots and temperature |
| VC @ IPP | 12.8 V at 46.9 A (10/1000 μs) - Clamping voltage seen by downstream ICs during standard lightning surge test |
| PPPM (10×1000 μs) | 600 W - Sustains single high-energy transients common in industrial power line switching |
| ID @ VWM | 20 μA max - Negligible standby current draw, critical for battery-powered sensor nodes |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - Protects USB, UART, and I²C interfaces against human-body discharge |
| Package | SlimSMA (DO-221AC), 0.95 mm typical height - Enables use in ultra-thin consumer enclosures and dense PCB layouts |
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 height. Matte tin-plated leads, RoHS-compliant, halogen-free, MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink path | Connected to protected line; conducts surge current to ground when VC exceeded |
| Cathode | Reference node / clamping rail | Connected to system ground; establishes fixed reference for avalanche breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.95 mm height) | Enables integration into <1.0 mm Z-height assemblies such as wearables and slim IoT modules |
| Peak pulse power: 600 W (10/1000 μs) | Withstands IEC 61000-4-5 line surge events up to 1 kV/2 Ω without degradation |
| Clamping voltage: 12.8 V @ 46.9 A | Limits voltage stress on 5 V logic rails and USB PHYs during fast transients |
| ESD capability: 15 kV air / 8 kV contact | Eliminates need for additional ESD diodes on exposed ports like HDMI or audio jacks |
| MSL level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns |
Applications
| USB Power Delivery Port Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 5 V VBUS and CC lines in USB-C PD adapters against hot-plug surges and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches the PD controller IC and port multiplexer. Use Value: Prevents latch-up and gate oxide damage in USB PD controllers while maintaining signal integrity on high-speed CC negotiation lines. | Use Scenario: Shielding analog output (4–20 mA) and digital I/O (RS-485) of factory-floor pressure/temperature sensors from inductive switching noise. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed directly at connector entry point to shunt surge current away from precision ADC and isolator ICs. Use Value: Maintains measurement accuracy and prevents field-replaceable sensor module failure due to 24 V DC supply line transients. |
| Consumer Audio Jack ESD Protection | Telecom DSL Line Interface Protection |
Use Scenario: Guarding 3.5 mm TRRS headphone/mic jacks in smartphones and tablets against repeated human-body ESD events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed in series with audio paths to suppress ESD without attenuating 20 Hz–20 kHz signals. Use Value: Achieves >8 kV contact ESD immunity per IEC 61000-4-2 without degrading SNR or introducing audible artifacts. | Use Scenario: Safeguarding ADSL/VDSL line drivers and receivers from lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: Primary front-end clamping device in hybrid coupler interface, absorbing 8/20 μs surges before they reach transformer-coupled PHY ICs. Use Value: Enables compliance with ITU-T K.20/21/44 standards while preserving signal fidelity across 1–30 MHz DSL bands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F8.0A-M3/6A | Identical electrical specs; differs only in tape-and-reel packaging (3500 pcs vs. 14000 pcs per reel) | No functional difference; selection driven by production volume and feeder compatibility | Choose SMA6F8.0A-M3/6A for prototyping or low-volume SMT runs requiring smaller reels |
| SMAJ8.0A-M3/6B | Same VWM/VBR/VC but lower PPPM (400 W vs. 600 W); larger SMA (DO-214AC) package (2.3 mm height) | Less suitable for ultra-low-profile designs; marginally reduced surge handling in high-energy environments | Use SMAJ8.0A-M3/6B only if board layout allows taller component or existing footprint reuse is prioritized |
Compared with SMA6F8.0A-M3/6B, SMA6F8.0A-M3/6A offers identical protection performance in a smaller reel format ideal for NPI builds, while SMAJ8.0A-M3/6B trades 33 % lower surge rating and +140 % height for legacy footprint compatibility-making SMA6F8.0A-M3/6B optimal for new compact, high-reliability designs.
Availability
SMA6F8.0A-M3/6B is available at Aetrix Electronics and suitable for USB-C PD adapter design, industrial sensor interface protection, consumer audio jack hardening, and telecom DSL line safeguarding requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMA6F8.0A-M3/6B 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, efficiency, and miniaturization.
The SMA6F series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-surge, low-profile surface-mount overvoltage protection in consumer, industrial, and communications equipment where space and robustness are critical.
FAQ
What is the clamping voltage of the SMA6F8.0A-M3/6B under a 10/1000 μs surge?
The SMA6F8.0A-M3/6B has a maximum clamping voltage (VC) of 12.8 V when subjected to a 10/1000 μs waveform at 46.9 A peak pulse current. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 89458, Rev. 17-Sep-2021) and ensures downstream 5 V logic circuits remain within safe operating limits during surge events. The SMA6F8.0A-M3/6B achieves this with low dynamic resistance (0.063 Ω), minimizing voltage overshoot beyond VC.
Is the SMA6F8.0A-M3/6B unidirectional or bidirectional?
The SMA6F8.0A-M3/6B is a unidirectional transient voltage suppressor, as explicitly stated in the Vishay datasheet under FEATURES and PRIMARY CHARACTERISTICS. It functions like a Zener diode-conducting only in reverse breakdown-and must be oriented with the cathode band toward the protected line's ground reference. Bidirectional variants (e.g., SMA6F8.0CA) are separate part numbers and not interchangeable with the SMA6F8.0A-M3/6B.
What is the maximum operating junction temperature for the SMA6F8.0A-M3/6B?
The SMA6F8.0A-M3/6B has a maximum operating junction temperature (TJ max) of +175 °C, confirmed in the PRIMARY CHARACTERISTICS table of the Vishay datasheet. This rating supports continuous operation in high-ambient environments such as enclosed industrial control cabinets or automotive under-hood applications when mounted on FR4 PCB with appropriate thermal relief. Derating begins above TA = 25 °C per Figure 5 in the datasheet.
Does the SMA6F8.0A-M3/6B meet RoHS and halogen-free requirements?
Yes, the SMA6F8.0A-M3/6B is halogen-free, RoHS-compliant, and rated as industrial grade, as specified in the MECHANICAL DATA section of the Vishay datasheet. The "M3" suffix denotes compliance with JESD201 Class 2 whisker testing and adherence to material restrictions outlined in Vishay document 99912. Full compliance documentation is available through Vishay's official product page and authorized distributor portals.
What is the leakage current specification for the SMA6F8.0A-M3/6B at its stand-off voltage?
At its 8.0 V stand-off voltage (VWM), the SMA6F8.0A-M3/6B exhibits a maximum reverse leakage current (ID) of 20 μA at TA = 25 °C, per the ELECTRICAL CHARACTERISTICS table. This low leakage ensures minimal power loss in always-on battery-powered systems and avoids false triggering in high-impedance sensing circuits. Leakage remains below 50 μA up to 85 °C ambient, as verified in the datasheet's temperature coefficient notes.
SMA6F8.0A-M3/6B 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-M3/6B FAQ
1.How can I place an order for SMA6F8.0A-M3/6B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F8.0A-M3/6B 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-M3/6B reliable?
The price and inventory of SMA6F8.0A-M3/6B 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-M3/6B is usually 5 days.
3.What payment methods are accepted for SMA6F8.0A-M3/6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F8.0A-M3/6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F8.0A-M3/6B?
SMA6F8.0A-M3/6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F8.0A-M3/6B 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-M3/6B?
For technical support, including SMA6F8.0A-M3/6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F8.0A-M3/6B requirements.
6.How does Aetrix verify that SMA6F8.0A-M3/6B is sourced from the original manufacturer or authorized distributors?
All SMA6F8.0A-M3/6B 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-M3/6B meets industry standards.
7.What is the process for return or replacement of SMA6F8.0A-M3/6B?
All SMA6F8.0A-M3/6B units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F8.0A-M3/6B, 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-M3/6B part is unused and in its original packaging.
Return procedure for SMA6F8.0A-M3/6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6F8.0A-M3/6B Tags
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