SA12CA-TP Circuit Protection

Current - Peak Pulse (10/1000µs):	25.6A
Base Part Number:	SA*A
Supplier Device Package:	DO-15
Package / Case:	DO-204AC, DO-15, Axial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 175°C (TA)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	500W
Series:	--
Voltage - Clamping (Max) @ Ipp:	19.9V
Voltage - Breakdown (Min):	13.3V
Voltage - Reverse Standoff (Typ):	12V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

SA12CA-TP is a type of TVS (Transient Voltage Suppressor) diode designed to prevent electrical transient overvoltage events from damaging sensitive components and equipment. It is capable of providing a significant protection level to any application and is able to withstand transients over the full operating temperature range. 

Features

SA12CA-TP is designed to provide transient protection for sensitive components. It features a wide operating temperature range, low operating and leakage current, low capacitor Cdom, and extremely low clamping/holding voltage. The device is also capable of supporting robust ESD protection as well as protection against fast EFT/B events. Furthermore, the device is RoHS compliant with no halogen content.

Applications

SA12CA-TP is primarily used in consumer electronics and communication equipment, such as cellular phones, computers, appliaqnces, TVs and car audio systems. The device can also be used in cars, as a secondary protection for direct current circuits as well as the power electronics in motor control applications.

Working Principle

SA12CA-TP is an active device that is capable of handling and dissipating large amounts of energy in high-power applications. working principleis based on the avalanche breakdown phenomenon, when an excess voltage is applied to the device, the breakdown occurs and a large current flows to a node connected to the diode. This large current is then dissipated in the form of heat.In order to provide an adequate level of protection, it is extremely important to properly calculate the correct voltage rating for the diode. The voltage rating should be selected so as to exceed the maximum expected transient voltage by at least a factor of 10. The current rating of the diode should also be taken into consideration and should be set to be at least 1.5 times the current rating of the application.

Conclusion

SA12CA-TP is a reliable TVS diode that offers excellent protection against electrical transients. It features low operating and leakage current, low clamping/holding voltage and robust ESD protection. The device is suitable for a wide range of applications, such as consumer electronics, communications equipment and motor control applications.

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