SM15T22AY Circuit Protection

Current - Peak Pulse (10/1000µs):	254A (8/20µs)
Base Part Number:	SM15T
Supplier Device Package:	SMC
Package / Case:	DO-214AB, SMC
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	1500W (1.5kW)
Series:	Automotive, AEC-Q101, SM15TY, TRANSIL™
Voltage - Clamping (Max) @ Ipp:	39.3V
Voltage - Breakdown (Min):	20.9V
Voltage - Reverse Standoff (Typ):	18.8V
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 - SM15T22AY Application Field and Working Principle

SM15T22AY is a kind of TVS (Transient Voltage Suppressor) diode, which is usually used as surge protector. It is widely used in consumer electronics and related communication equipment, such as LCD/LED television, home appliances, computer system etc. SM15T22AY works on the principle of clamping which is a method of limiting the transient over voltage by diverting the transient current through a short circuit path. In this way, the voltage at the protected point is kept at a safe level.SM15T22AY uses a silicon carbide diode as the primary component, and is connected in anti-parallel over a low inductance power line. It has very low leakage current and fast turn-on times. In addition, it is highly reliable and capable of enduring high surge current up to 25 Ampere.Due to its high operational performance, SM15T22AY diode is well suited for consumer electronics and other industrial applications. It provides high level of reliability and superior performance, which makes it extremely popular among the professional users.Besides, SM15T22AY diode is also designed to protect the electrical devices from electrostatic discharge (ESD) and has a very fast response time to the sudden voltage change. When there is overvoltage, the SM15T22AY diode will start to conduct and reduce the voltage usually within nano-seconds. Thus, it can protect the electrical equipment from being damaged by sudden electircal surge or sudden voltage change.Moreover, the SM15T22AY diode is also designed to provide protection against lightning, overvoltage or overcurrent situations. The TVS diode provides high level of protection against the specific issues, and its design makes it highly reliable in these situations. It does not generate any noise, spike or whatever when it is used for protecting the electrical devices from the destructive voltage spikes or power surges.In conclusion, SM15T22AY diode is a highly reliable and efficient surge protection device. It is easy to install and provides superior protection against overvoltage, lightning, ESD and overcurrent. It is widely used in consumer electronics and related communication equipment, and has a very fast response time to the sudden voltage change. Therefore, it is an ideal device for protecting these listed equipment against the unwanted electrical surge or voltage.

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