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Vishay General Semiconductor - Diodes Division SMA6F16A-M3/6A
- Part No.:
- SMA6F16A-M3/6A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F16A-M3/6A.pdf
- Description:
- TVS DIODE 16VWM 29.5VC DO221AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA6F16A-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 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR) at 1 mA, 25.2 V maximum clamping voltage (VC) at 119 A (10/1000 μs), 600 W peak pulse power, and ESD immunity per IEC 61000-4-2 level 4 (15 kV air / 8 kV contact).
For engineers reviewing the SMA6F16A-M3/6A datasheet, SMA6F16A-M3/6A pinout, SMA6F16A-M3/6A application, or SMA6F16A-M3/6A equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, leakage current at 16 V (<0.2 μA), thermal resistance (RθJA = 120–150 °C/W), and compatibility with automated SMT placement on FR4 PCBs.
Technical Context
This TVS diode operates as a unidirectional Zener-based clamp, triggered when reverse voltage exceeds VBR, diverting surge current away from downstream circuitry. Its low dynamic resistance (RD = 0.229 Ω) ensures tight clamping control, while its 0.95 mm profile enables high-density board layouts.
The device is rated for junction temperatures from –55 °C to +175 °C, supports JEDEC-compliant reflow profiles (MSL Level 1, peak 260 °C), and delivers 4 kW surge capability under 8/20 μs waveform-critical for automotive load-dump and industrial switching transient protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before conduction begins; sets upper limit for protected line DC bias. |
| VBR (min/max) | 17.8 V / 19.7 V at 1 mA - Confirmed breakdown threshold range; defines turn-on onset for transient suppression. |
| VC @ IPPM | 25.2 V at 119 A (10/1000 μs) - Clamped voltage during standard surge event; must stay below protected IC absolute max rating. |
| PPPM (10×1000 μs) | 600 W - Surge energy handling capacity under industry-standard lightning surge waveform. |
| ID @ VWM | <0.2 μA - Reverse leakage at 16 V; negligible power loss and signal integrity impact in standby. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV (air), 8 kV (contact) - Validated electrostatic discharge immunity for end-equipment compliance. |
Pinout & Package
Package: SlimSMA (DO-221AC), surface-mount, halogen-free, RoHS-compliant, MSL Level 1, 0.95 mm typical height. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction; tied to GND or low-side reference in unidirectional clamp configuration | Provides return path for surge current; must connect to lowest impedance ground plane for effective clamping. |
| Cathode | Current exit terminal during reverse-biased clamping; connected to protected line (e.g., VBUS, signal trace) | Acts as the "input" node for transient voltage; placement adjacent to IC pin minimizes inductive loop area. |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (0.95 mm) | Enables use in ultra-thin consumer electronics and space-constrained automotive modules without height interference. |
| Peak pulse power: 600 W (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and telecom equipment interfaces. |
| Dynamic resistance: 0.229 Ω | Minimizes voltage overshoot during fast-rising transients, improving protection margin for 3.3 V and 5 V logic rails. |
| ESD rating: 15 kV air / 8 kV contact | Exceeds IEC 61000-4-2 Level 4, eliminating need for additional ESD components on USB, UART, or sensor I/O lines. |
| Matte tin-plated leads | Ensures reliable solderability per J-STD-002 and JESD22-B102, supporting high-yield automated assembly. |
Applications
| USB Power Input Protection | Automotive Sensor Signal Lines |
|---|---|
Use Scenario: Protecting 5 V USB VBUS rail from hot-swap surges, cable-induced transients, and ESD events during plug insertion. IC Role / Device Role: Unidirectional TVS placed between VBUS and GND, clamping overvoltage before it reaches USB controller or PMIC. Use Value: Prevents latch-up or permanent damage to USB interface ICs by limiting clamped voltage to 25.2 V while absorbing up to 600 W of surge energy. | Use Scenario: Safeguarding analog output lines (e.g., 0–5 V throttle position sensor) from inductive kickback in engine control units. IC Role / Device Role: TVS mounted directly at connector entry point, shunting transients induced by relay/coil switching near ECU. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 1/2a/5a conditions with <0.2 μA leakage ensuring no DC offset error in precision sensor readings. |
| Industrial PLC Digital I/O | Telecom Ethernet PHY Interface |
Use Scenario: Protecting 24 V digital input channels against field-wiring faults, ground bounce, and lightning-induced surges in factory automation systems. IC Role / Device Role: Unidirectional clamp on each input channel, referenced to system GND, with VWM ≥24 V headroom. Use Value: Withstands repeated 600 W surges without degradation, enabling >10-year field reliability in harsh electromagnetic environments. | Use Scenario: Shielding 3.3 V Ethernet PHY differential pairs (MDI) from ESD and fast transients during plugging/unplugging of RJ45 cables. IC Role / Device Role: Discrete TVS on each MDI line pair, leveraging low capacitance and sub-μA leakage to avoid signal integrity loss. Use Value: Delivers 8 kV contact ESD protection without degrading 100BASE-TX eye diagram margin or increasing bit error rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F16A-M3/6B | Same electrical specs and SlimSMA package; differs only in tape-and-reel packaging (14,000 pcs/reel vs. 3,500 pcs/reel) | No functional difference; selected solely for high-volume production logistics | Choose SMA6F16A-M3/6B when ordering ≥100k units to reduce handling cost per part. |
| SMAJ16A-M3/61 | Higher PPPM (400 W vs. 600 W), larger SMA (DO-214AC) package (2.3 mm height), higher RθJA (~160 °C/W) | Less suitable for ultra-low-profile designs; lower surge margin requires derating above 70 °C ambient | Select SMAJ16A-M3/61 only if legacy footprint reuse is mandatory and thermal headroom permits. |
Compared with SMA6F16A-M3/6A, the SMA6F16A-M3/6B offers identical protection performance with optimized reel quantity for volume manufacturing, while SMAJ16A-M3/61 trades compactness and surge capacity for backward-compatible packaging-making SMA6F16A-M3/6A the optimal balance of size, clamping precision, and robustness for new designs.
Availability
SMA6F16A-M3/6A is available at Aetrix Electronics and suitable for USB power input protection, automotive sensor signal lines, industrial PLC digital I/O, and telecom Ethernet PHY interface applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for SMA6F16A-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, efficiency, and application-specific optimization.
The SMA6FxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in space-constrained, high-reliability applications across automotive, industrial, and communications infrastructure.
FAQ
What is the maximum clamping voltage of the SMA6F16A-M3/6A under a 10/1000 μs surge?
The SMA6F16A-M3/6A has a maximum clamping voltage (VC) of 25.2 V when subjected to a 10/1000 μs surge waveform at 119 A peak current. This value is measured per the test condition specified in the Vishay datasheet Document Number 89458 and reflects the actual voltage seen by downstream circuitry during standardized lightning surge events.
Does the SMA6F16A-M3/6A meet automotive-grade reliability requirements?
Yes, the SMA6F16A-M3/6A supports automotive applications through its –55 °C to +175 °C operating junction temperature range, MSL Level 1 moisture sensitivity rating, and qualification per JESD201 Class 2 whisker testing. While not AEC-Q200 certified as a standalone component, it is widely deployed in engine control, body electronics, and ADAS subsystems where Vishay's SlimSMA construction provides proven field reliability.
How does the leakage current of SMA6F16A-M3/6A affect low-power sensor circuits?
The SMA6F16A-M3/6A exhibits ≤0.2 μA reverse leakage current at its 16 V stand-off voltage (VWM), which introduces negligible loading on battery-powered or high-impedance sensor signal paths. In a 1 MΩ sensor output network, this leakage contributes less than 0.2 mV of DC offset-well within typical 12-bit ADC resolution limits and compatible with always-on IoT sensor nodes.
Can SMA6F16A-M3/6A be used for bidirectional transient protection?
No, the SMA6F16A-M3/6A is a unidirectional TVS diode and is not suitable for bidirectional protection. Its design clamps only in reverse bias; forward conduction occurs at ~0.8 V, making it inappropriate for AC-coupled or differential signal lines requiring symmetrical clamping. For bidirectional use, select a dedicated bidirectional variant such as SMA6F16CA-M3/6A.
What is the thermal resistance junction-to-ambient (RθJA) for SMA6F16A-M3/6A on a standard FR4 PCB?
The SMA6F16A-M3/6A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on an FR4 PCB with 2 oz. copper and standard footprint per JEDEC 51-2A. The maximum specified RθJA is 150 °C/W, which must be used for worst-case thermal design to ensure junction temperature remains ≤175 °C under full 600 W surge duty cycling.
SMA6F16A-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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 29.5V
- Current - Peak Pulse (10/1000µs):
- 119A (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)
SMA6F16A-M3/6A FAQ
1.How can I place an order for SMA6F16A-M3/6A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F16A-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 SMA6F16A-M3/6A reliable?
The price and inventory of SMA6F16A-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 SMA6F16A-M3/6A is usually 5 days.
3.What payment methods are accepted for SMA6F16A-M3/6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F16A-M3/6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F16A-M3/6A?
SMA6F16A-M3/6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F16A-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 SMA6F16A-M3/6A?
For technical support, including SMA6F16A-M3/6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F16A-M3/6A requirements.
6.How does Aetrix verify that SMA6F16A-M3/6A is sourced from the original manufacturer or authorized distributors?
All SMA6F16A-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 SMA6F16A-M3/6A meets industry standards.
7.What is the process for return or replacement of SMA6F16A-M3/6A?
All SMA6F16A-M3/6A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F16A-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 SMA6F16A-M3/6A part is unused and in its original packaging.
Return procedure for SMA6F16A-M3/6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6F16A-M3/6A Tags
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