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Vishay General Semiconductor - Diodes Division SMA6F17A-M3/6B
- Part No.:
- SMA6F17A-M3/6B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F17A-M3/6B.pdf
- Description:
- TVS DIODE 17VWM 31.4VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,943
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Product details
Overview
SMA6F17A-M3/6B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) in SlimSMA (DO-221AC) package, designed for clamping inductive switching transients and ESD events on power and signal lines. It features 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR), 26.7 V max clamping voltage at 10/1000 μs (IPP = 22.5 A), 600 W peak pulse power, and IEC 61000-4-2 Level 4 ESD immunity (15 kV air / 8 kV contact).
For engineers reviewing the SMA6F17A-M3/6B datasheet, SMA6F17A-M3/6B pinout, SMA6F17A-M3/6B application, or SMA6F17A-M3/6B equivalent, key selection criteria include clamping performance under 10/1000 μs surge, thermal derating on FR4 PCB, unidirectional polarity, MSL Level 1 reflow compatibility, and SlimSMA footprint constraints.
Technical Context
This TVS diode operates as a voltage-clamped overvoltage protection device, triggered when reverse voltage exceeds VBR (18.9–20.9 V). Its low dynamic resistance (0.259 Ω typical) ensures rapid response and tight clamping during transient events up to 22.5 A (10/1000 μs) or 111 A (8/20 μs).
Designed for automated SMT assembly, it uses matte tin-plated leads compliant with J-STD-002 and JESD22-B102, meets UL 94 V-0 flammability rating, and supports operating junction temperatures from –55 °C to +175 °C with 120–150 °C/W junction-to-ambient thermal resistance on standard FR4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 18.9 V / 20.9 V at 1 mA - precise breakdown threshold defining turn-on range |
| VC @ IPP | 26.7 V at 22.5 A (10/1000 μs) - actual clamped voltage seen by protected circuit |
| PPPM (10×1000 μs) | 600 W - surge energy handling capability for common lightning/inductive spike profiles |
| ID @ VWM | 0.2 μA max - negligible leakage current preserving signal integrity and power efficiency |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - validated system-level ESD robustness |
| TJ max | +175 °C - high-temperature operation support for automotive and industrial environments |
Pinout & Package
Package: SlimSMA (DO-221AC), 2-terminal surface-mount package with cathode band marking; dimensions 4.35 mm × 2.70 mm × 0.95 mm (L × W × H); MSL Level 1, RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side (e.g., GND or return path) in unidirectional TVS configuration |
| Cathode | Current exit terminal during reverse clamping | Connected to protected line (e.g., 12 V rail or data line); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile height | 0.95 mm typical - enables use in space-constrained portable and automotive modules |
| Automated placement compatibility | Matte tin-plated leads per J-STD-002 - ensures reliable solder wetting and process yield in high-speed SMT lines |
| High-energy clamping | 4 kW PPPM (8/20 μs) - handles severe surge events such as ISO 7637-2 Pulse 5a without failure |
| Robust ESD protection | IEC 61000-4-2 Level 4 certified - eliminates need for additional discrete ESD components on I/O lines |
| Thermal reliability | RθJA = 120–150 °C/W on FR4 - enables stable operation without heatsinking in ambient ≤ 85 °C |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-supplied ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 17 V. Use Value: Limits voltage to ≤26.7 V during 22.5 A transients, preventing damage to downstream regulators and microcontrollers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs. IC Role / Device Role / Timing Role: Reverse-biased TVS on signal line to absorb ESD and switching noise from nearby solenoids. Use Value: Maintains signal fidelity with only 0.2 μA leakage at 17 V, while surviving 15 kV air-gap ESD events. |
| Consumer USB Port Protection | Telecom Line Card Surge Suppression |
Use Scenario: Adding secondary overvoltage protection on VBUS line of USB-C ports in laptops and docking stations. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing hot-plug spikes and cable discharge events. Use Value: Clamps to 26.7 V within nanoseconds, protecting USB PD controllers without affecting 5 V nominal operation. | Use Scenario: Front-end surge protection for Ethernet PHY interfaces in DSLAM and ONU equipment. IC Role / Device Role / Timing Role: Unidirectional TVS on DC bias lines feeding PoE-powered PHYs. Use Value: Withstands repeated 4 kW (8/20 μs) surges per ITU-T K.20/21, extending field service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F17A-M3/6A | Identical electrical specs; differs only in tape-and-reel packaging (3500 pcs vs. 14000 pcs) | No functional difference; same SlimSMA footprint and thermal performance | Select based on volume procurement needs and SMT line reel capacity |
| SMAJ17A-M3/61 | Same VWM/VBR/VC ratings but in larger SMA (DO-214AC) package; RθJA ≈ 85 °C/W vs. 120–150 °C/W | Higher power dissipation margin on PCB but occupies ~2.5× more board area | Choose SMAJ17A-M3/61 only if thermal headroom is critical and layout space permits |
Compared with SMA6F17A-M3/6B, SMA6F17A-M3/6A offers identical protection performance in smaller-volume reels, while SMAJ17A-M3/61 trades compactness for improved thermal dissipation-making the SMA6F17A-M3/6B optimal for space-constrained, high-density designs where 600 W surge handling suffices.
Availability
SMA6F17A-M3/6B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface circuits, consumer USB port hardening, and telecom line card surge suppression requiring stable component supply and full traceability.
Supply support for SMA6F17A-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 and application-specific optimization.
The SMA6FxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for high-efficiency, low-profile transient suppression in automotive, industrial, and consumer electronics where board space and thermal constraints limit traditional solutions.
FAQ
What is the maximum clamping voltage of the SMA6F17A-M3/6B under a 10/1000 μs surge?
The SMA6F17A-M3/6B has a maximum clamping voltage (VC) of 26.7 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 22.5 A. This value is measured per the conditions specified in the Vishay datasheet (Document Number: 89458) and reflects the actual voltage imposed on the protected circuit during transient events.
Is the SMA6F17A-M3/6B suitable for automotive applications requiring AEC-Q200 compliance?
The SMA6F17A-M3/6B is not AEC-Q200 qualified per its official Vishay documentation. While it meets key automotive stress requirements-including 175 °C max junction temperature, MSL Level 1 reflow, and ISO 7637-2 surge capability-it lacks formal qualification testing. For AEC-Q200–mandated designs, engineers must verify qualification status directly with Vishay or select an explicitly qualified variant.
Does the SMA6F17A-M3/6B have bidirectional or unidirectional polarity?
The SMA6F17A-M3/6B is a unidirectional TVS diode, as confirmed in the Vishay datasheet under FEATURES and ELECTRICAL CHARACTERISTICS. It conducts only in reverse breakdown mode and must be installed with the cathode band oriented toward the protected line-forward conduction is not intended for protection function.
What is the thermal resistance (RθJA) of the SMA6F17A-M3/6B on a standard FR4 PCB?
The SMA6F17A-M3/6B exhibits a typical junction-to-ambient thermal resistance (RθJA) of 120–150 °C/W when mounted on a standard FR4 PCB with 2 oz. copper and the recommended footprint. This value is defined in the THERMAL CHARACTERISTICS section of the Vishay datasheet and is critical for calculating safe operating temperature margins under sustained power dissipation.
Can the SMA6F17A-M3/6B replace SMAJ17A in existing designs?
The SMA6F17A-M3/6B cannot serve as a direct drop-in replacement for SMAJ17A due to package differences: SMA6F17A-M3/6B uses SlimSMA (DO-221AC), while SMAJ17A uses SMA (DO-214AC). Though both share identical VWM, VBR, and VC ratings, their footprints and thermal resistances differ significantly-requiring PCB layout revision and thermal validation before substitution.
SMA6F17A-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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 31.4V
- Current - Peak Pulse (10/1000µs):
- 111A (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)
SMA6F17A-M3/6B FAQ
1.How can I place an order for SMA6F17A-M3/6B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F17A-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 SMA6F17A-M3/6B reliable?
The price and inventory of SMA6F17A-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 SMA6F17A-M3/6B is usually 5 days.
3.What payment methods are accepted for SMA6F17A-M3/6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F17A-M3/6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F17A-M3/6B?
SMA6F17A-M3/6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F17A-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 SMA6F17A-M3/6B?
For technical support, including SMA6F17A-M3/6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F17A-M3/6B requirements.
6.How does Aetrix verify that SMA6F17A-M3/6B is sourced from the original manufacturer or authorized distributors?
All SMA6F17A-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 SMA6F17A-M3/6B meets industry standards.
7.What is the process for return or replacement of SMA6F17A-M3/6B?
All SMA6F17A-M3/6B units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F17A-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 SMA6F17A-M3/6B part is unused and in its original packaging.
Return procedure for SMA6F17A-M3/6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6F17A-M3/6B Tags
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Diodes Incorporated
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