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Category Circuit Protection>TVS - Diodes
Mfr STMicroelectronics
Series Automotive, AEC-Q101, SMA4F
Package Tape & Reel
Type Zener
Unidirectional Channels 1
Voltage - Reverse Standoff (Typ) 70V (Max)
Voltage - Breakdown (Min) 77.9V
Voltage - Clamping (Max) @ Ipp 113V
Current - Peak Pulse (10/1000µs) 3.5A
Power - Peak Pulse 400W
Power Line Protection No
Applications Automotive
Temperature Range - Operating -55°C ~ 175°C (TJ)
Mounting SMD (SMT)
Package / Case DO-221AC, SMA Flat Leads
Supplier Device Package SMAflat
Base Product Number SMA4F70
Other Names 497-SMA4F70AYCT,SMA4F70AY,497-SMA4F70AYDKR,497-SMA4F70AYTR
Standard Package 10,000
MSL Level 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8541.10.0080
Win Source Part Number 1298538-SMA4F70AY
Ultra Librarian 3D Model Ultra Librarian SMA4F70AY CAD Model

Description

The SMA4F70AY is a state-of-the-art transient voltage suppression (TVS) diode designed by STMicroelectronics, a global semiconductor leader known for its innovative and high-performance components. This robust TVS diode is specifically engineered to protect sensitive electronic equipment from voltage transients induced by system inductance, lightning, and other transient voltage events.

Key Features

  • High Surge Capability: With its ability to withstand high surge power, the SMA4F70AY is perfect for safeguarding high-density circuits against sudden voltage spikes.
  • Low Clamping Voltage: The device provides a low clamping voltage, ensuring that the protected component remains safe from the damaging effects of transient voltages.
  • Unidirectional Protection: It offers unidirectional protection, making it an ideal choice for DC power supply applications where directional voltage spikes can occur.
  • Fast Response Time: The SMA4F70AY reacts swiftly to transient overvoltages, offering immediate protection to the circuit components.
  • Compact SMA Footprint: With its small form factor, this TVS diode fits easily into a variety of design layouts, saving valuable board space without compromising on protection.

Applications

The versatile SMA4F70AY TVS diode is suitable for a wide range of applications, including:

  • Consumer electronics such as smartphones, tablets, and other portable devices.
  • Industrial systems where reliable voltage protection is critical to prevent costly downtime and equipment damage.
  • Automotive electronics that require robust protection against harsh electrical environments.
  • Communication systems, including base stations and networking equipment, where signal integrity is paramount.

Reliability and Quality

STMicroelectronics is committed to delivering high-quality components. The SMA4F70AY is rigorously tested to meet industry standards for reliability and performance, ensuring that it provides dependable protection for your electronic designs.

Conclusion

Whether you are designing consumer gadgets, automotive electronics, industrial machinery, or communication infrastructure, the SMA4F70AY from STMicroelectronics offers superior protection against voltage transients. Its combination of high surge capability, low clamping voltage, fast response time, and compact size make it an essential component for any circuit that demands robust voltage protection.

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