SMP20A-M3/85A Circuit Protection

Voltage - Clamping (Max) @ Ipp:	32.4V
Supplier Device Package:	DO-220AA (SMP)
Package / Case:	DO-220AA
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	400W
Current - Peak Pulse (10/1000µs):	12.3A
Series:	TransZorb®, eSMP®
Voltage - Breakdown (Min):	22.2V
Voltage - Reverse Standoff (Typ):	20V
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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SMP20A-M3/85A TVS-Diodes Application Field and Working Principle

TVS-Diodes, also known as Transient Voltage Surge Suppressors (TVSS), are electronic components that can protect sensitive and valuable electronics from voltage surges. They offer short-term protection from high voltages and currents, as well as electromagnetic interference. The SMP20A-M3/85A Diode is a great example of a TVS-Diode that can provide reliable and effective protection for various applications.

Application Field

The SMP20A-M3/85A Diode offers a variety of applications for low-capacitance protection. It is well suited for use in high-speed data and cable networks, as well as automotive and consumer electronics applications. The diode is also ideal for telecommunications, Ethernet, multimedia, ISDN and digital TV transmission systems and other applications subject to surges. With its low capacitance and low breakdown voltage, the SMP20A-M3/85A Diode provides reliable protection against surge events.

Working Principle

The SMP20A-M3/85A Diode is an unidirectional device that works by directing surge protection to ground while blocking normal flow of current. It does this by combining several elements into a single package. These elements include a zener voltage reference, a transient absorption circuit, a low-cost chip capacitor and protection diodes. To control the breakdown voltage, the zener voltage reference allows the junction of the protection diodes to turn on.In the event of a voltage surge, the diode will quickly turn on, absorbing the surge and then clamping it to a safe level. This prevents further damage to the protected circuit. After the surge has been absorbed, the diode will quickly turn off, allowing the protected circuit to return to normal operation.

Conclusion

The SMP20A-M3/85A Diode is a great example of a TVS-Diode that offers reliable protection from voltage surges. It is ideal for use in many applications such as high-speed data and cable networks, automotive electronics, telecommunications, Ethernet, multimedia, ISDN and digital TV transmission systems and other surge-sensitive applications. By combining several elements in one package, the diode is able to absorb and clamp any incoming voltage surge, before it is able to damage the protected circuit.

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