1N4740A-T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	10V
Tolerance:	±5%
Power - Max:	1W
Impedance (Max) (Zzt):	7 Ohms
Current - Reverse Leakage @ Vr:	10µA @ 7.6V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Through Hole
Package / Case:	DO-204AL, DO-41, Axial
Supplier Device Package:	DO-41
Base Part Number:	1N4740

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1N4740A-T is a type of single Zener diode. It offers an extremely efficient and cost effective solution for a wide range of applications, including EMI/RFI noise suppression, line termination, voltage regulation, transient voltage protection, current limitation, and power distribution.The 1N4740A-T operates at a reverse voltage of up to 15 volts and provides current capability of up to 5 amps. It is rated for continuous operating voltage at 25°C, with power dissipation of up to 500mW. The 1N4740A-T is constructed of small, reliable and low-cost components, making it an ideal choice for a wide range of applications.The working principle of 1N4740A-T is based on the principle of Zener breakdown. Zener breakdown occurs when the energy of a reverse biased diode is sufficient to create electron-gap states in the depletion region. This electron-gap states create a current flow even though the voltage applied is below the breakdown voltage. This current flow results in a drop in potential of the diode.The 1N4740A-T is designed to perform two key functions - voltage regulation and transient voltage protection. In voltage regulation, the breakdown voltage of the diode is used to regulate the output voltage of a circuit. This function is useful in power distribution and filtering applications, as well as input voltage regulation for power supplies and other equipment.In transient voltage protection, the breakdown voltage of the diode is used to protect circuit components from high voltage transients, such as those that occur due to lightning strikes and electrostatic discharge. The device is designed to begin conducting at a specific threshold and then clamp the voltage to a safe level. This provides a level of protection against voltage spikes and other transients that could damage components.The 1N4740A-T is widely used in a variety of applications due to its robust and efficient design. It is often utilized for EMI/RFI noise suppression, input voltage regulation, power supply filtering, power distribution, and transient voltage protection. It is also used for tertiary references for test equipment, and as a voltage controlled voltage source to provide a stable reference voltage for other circuitry. Additionally, the device is often used for analog-to-digital conversion, circuit isolation, and current limiting, among other applications.The 1N4740A-T offers some key environmental and cost benefits. The device is constructed ofTeflon and unaffected by atmospheres of all types. This provides an additional layer of physical protection and ensures the unit will not be affected by corrosion, extreme temperatures or humidity. Additionally, the 1N4740A-T is a small, low-cost device that is highly reliable and offers a long service life.In summary, 1N4740A-T is a single Zener diode with a reverse voltage of up to 15 volts and current capability of up to 5 amps. It is designed to perform two key functions – voltage regulation and transient voltage protection – and provides an efficient and cost effective solution for a wide range of applications. It is constructed of robust, reliable components and offers a long service life.

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