SMCJ12 Circuit Protection

Voltage - Clamping (Max) @ Ipp:	20.9V
Supplier Device Package:	DO-214AB (SMCJ)
Package / Case:	DO-214AB, SMC
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	1500W (1.5kW)
Current - Peak Pulse (10/1000µs):	75.4A
Series:	SMCJ
Voltage - Breakdown (Min):	12.6V
Voltage - Reverse Standoff (Typ):	12V
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 SMCJ12 Application Field and Working Principle

Surge Protecting Components (SPC) and Transient Voltage Suppression (TVS) diodes provide protection from extreme electrical surges, commonly known as Transients, ElectroStatic Discharge (ESD) and Lightning Induced Surge (LIS). They are often used in telecommunications, industrial, automotive, military, aircraft, networking, computers and consumer applications to protect sensitive circuits from electrical overstress or voltage spikes. The SMCJ12 series of TVS diodes are designed to provide protection for data lines in a way that is both effective and economical.

SMCJ12 Overview

The Bişar SMCJ12 series of TVS diode devices is designed for surface mount technology and is available in a variety of sizes to offer protection from 6 to 36 Volts. The devices provide the highest level of protection available with ESD protection up to 30 kV and are available with a holding current of up to 5.0 A.The SMCJ12 series are rated for up to 1,500 Watts peak power and are available in uni-directional and bi-directional packages with bidirectional triggering voltage. The devices feature low capacitance of less than 1pF and are designed to be ultra-fast with <10ns response time.

SMCJ12 Application Fields

The SMCJ12 series is ideal for applications where extra high electrical overstress protection is required. It\'s low capacitance and fast response time provide maximum protection against data line interference, ground fault protection, and overvoltage protection.The SMCJ12 is well suited for a variety of applications, including industrial, consumer, automotive, telecommunications, computers, and data lines. The devices are also ideal for use in rugged environments such as military, aerospace, and defense.

SMCJ12 Working Principle

The SMCJ12 works by channeling the current from an external overvoltage to the TVS diode. The device then diverts this current away from sensitive components, protecting them from potential damage.The TVS diode is connected in parallel with the load, such as a capacitor or microcontroller, and will then draw current from the overvoltage when the voltage rises above the diode\'s breakdown voltage. This will allow the current to bypass the load, causing the voltage on the load to stay within safe limits.

Conclusion

The SMCJ12 series from Bişar is designed to provide quicker and more reliable protection against transient voltages and ESD than traditional TVS diodes. With bidirectional triggering voltage, ultra-fast response time, and peak power ratings up to 1,500W, these devices offer outstanding performance and reliability for a variety of applications.

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