SMCG43A-HR

Voltage - Clamping (Max) @ Ipp:	69.4V
Supplier Device Package:	DO-215AB (SMCG)
Package / Case:	DO-215AB, SMC Gull Wing
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	1500W (1.5kW)
Current - Peak Pulse (10/1000µs):	21.7A
Series:	SMCG-HR
Voltage - Breakdown (Min):	47.8V
Voltage - Reverse Standoff (Typ):	43V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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TVS - Diodes

The SMCG43A-HR is part of a family of Transient Voltage Suppression (TVS) diodes that is used to protect against electrical surges. It is a two-terminal, zener-diode-based, three-line device that provides a reversible current and voltage clamping action to protect circuits from overvoltage or excessive current.

Application Field

The SMCG43A-HR is ideally suited for a variety of applications in the industrial, automotive, computer and communications industries. These include automotive spark control, electricity meters, cameras, computers, and communication systems. It is suitable for apps where a high surge current, short-circuit protection, and efficient pack-voltage-drop are required.

Working Principle

The working principle of the SMCG43A-HR is based on a combination of zener and avalanche breakdown characteristics. When the overvoltage stress exceeds the zener breakdown voltage, a clamped voltage is developed across the device. The current then is limited by the avalanche voltage can. When contamination or other nonlinearities occur on the input line, the clamping voltage and current on these contaminants is dissipated in the diode. The clamped voltage is adjustable by changing the zener voltage rating and the clamping current is adjustable by changing the avalanche voltage rating. The current clamping action of the device largely limits the current flow, while the zener breakdown voltage limits the voltage. The combination of these two regulators makes the device quite effective at handling transient over-voltages or excessive currents.The SMCG43A-HR provides regulation of both steady-state and transient voltage levels. It is also designed to provide a low-level voltage protection and suppress+ high-energy, high-frequency transients that can cause partial or total system shutdown.

Advantages

The SMCG43A-HR offers several advantages over other types of surge protection solutions. It is both cost effective and reliable, and it has a very fast response time. Additionally, it has a very low initial turn-on voltage which makes it suitable for almost any application.Finally, the SMCG43A-HR is designed to dissipate high-energy transients effectively. It is a rugged device capable of withstanding high current surges and still providing the required level of protection. It can also provide continuous protection from power dissipation and shorts to ground or high-voltage input transients.

Conclusion

The SMCG43A-HR provides protection from overvoltage or excessive current surges. It is a three-line device that combines a zener and avalanche breakdown characteristics to provide a reversible clamping action. The SMCG43A-HR is suitable for a variety of applications in the industrial, automotive, computer, and communications industries. It is both cost effective and reliable, and it has a very fast response time. It also has a low initial turn-on voltage and is designed to dissipate high-energy transients effectively.

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