CMD9121VYC/TR10

Voltage - Forward (Vf) (Typ):	2V
Height (Max):	3.00mm
Size / Dimension:	2.50mm L x 2.00mm W
Supplier Device Package:	Z-Bend
Package / Case:	2-SMD, Z-Bend
Features:	--
Wavelength - Peak:	585nm
Wavelength - Dominant:	--
Mounting Type:	Surface Mount
Viewing Angle:	25°
Current - Test:	--
Series:	--
Lens Style/Size:	Round with Domed Top, 1.90mm
Millicandela Rating:	30mcd
Lens Transparency:	Clear
Lens Color:	--
Color:	Yellow
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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LED Indication - Discrete

Discrete LED indication circuits are used to provide an indication of the presence of a signal or an alarm condition. A discrete LED indication circuit, such as the CMD9121VYC/TR10, combines an LED with a transistor to provide a visual indication of a signal or alarm.

Overview of CMD9121VYC/TR10

The CMD9121VYC/TR10 is a discrete indication circuit which provides a visual indication of a signal or alarm condition. It consists of a single NPN transistor with a single red LED mounted on the top of the package. The transistor is controlled by a small signal and when turned on, the LED is lit. The NPN transistor has an HFE (high frequency output) of 120 at 1MHz, allowing it to quickly turn the LED on and off with minimal power consumption. The LED has an operating voltage of 2.2V and an operating current of 15mA.

The Application Fields of CMD9121VYC/TR10

The CMD9121VYC/TR10 can be used in several different applications. It can be used as an indicator for a signal, such as a signal from a motion detector or a temperature sensor. The circuit can also be used as an alarm indicator for a warning or safety device. The discrete LED circuit can also be used to provide a visual indication of a fault condition.

Working Principle of CMD9121VYC/TR10

The CMD9121VYC/TR10 is a discrete LED indicator circuit which employs an NPN transistor and a single red LED. When a small signal is applied to the base of the transistor, its HFE allows it to quickly turn the LED on. When the signal is removed, the LED will turn off again. The LED has an operating voltage of 2.2V and an operating current of 15mA, allowing it to produce a bright, clear light.The transistor provides the majority of the power to the LED, which helps reduce power consumption. The higher the signal applied to the base of the transistor, the greater the current it will provide to the LED, thus increasing the brightness of the LED.

Conclusion

The CMD9121VYC/TR10 is an example of a discrete LED indication circuit which can be used in a variety of applications. The circuit provides a visual indication of a signal or alarm condition, and can be used in both commercial and residential applications. The circuit\'s NPN transistor and LED combination allows for efficient operation with minimal power consumption, while providing bright and clear indication of a signal or alarm.

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