MD918

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Transistor Type:	2 NPN (Dual)
Current - Collector (Ic) (Max):	50mA
Voltage - Collector Emitter Breakdown (Max):	15V
Vce Saturation (Max) @ Ib, Ic:	900mV @ 1mA, 10mA
Current - Collector Cutoff (Max):	10nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce:	50 @ 3mA, 5V
Power - Max:	2W
Frequency - Transition:	600MHz
Operating Temperature:	-65°C ~ 200°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-78-6 Metal Can
Supplier Device Package:	TO-78-6

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Introduction

MD918 is a high voltage ultra-narrow bipolar transistor array integrated circuit (IC). It offers excellent performance in terms of input resistance, output current, and voltage breakdown performance. This integrated circuit package is small in size and has a wide operating range. Thus, it can be easily used in most applications.

Application Field

MD918 is mostly used in high speed power amplifier applications. It is capable of providing high amplification and high-voltage performance. Furthermore, it provides excellent power rating, low EMI noise, and precise operation. Moreover, this IC is used in a wide range of applications, such as in amplifiers, power converters, power amplifiers, power supplies, and other circuits that require high speed and precise operation.

Working Principle

MD918 utilizes a high-voltage and fast-switching bipolar transistor array, which consists of NPN transistors. Each transistor is configured with a source, a drain, and a gate. The source is the common signal input terminal and the drain is the connection for the high-voltage signal output. Moreover, the gate determines the flow of current in the circuit. When a signal is applied to the source, it is amplified by the transistor array, producing a large signal at the drain. Furthermore, the BJT array can be used to control the voltage level across the output circuit, thus allowing for precise voltage regulation.

Advantages

The main advantages of MD918 are its low power consumption, high speed, small size, its wide operating range, and its precise operation. Additionally, its output power rating is much higher than that of other devices, and its high voltage breakdown performance ensures the reliability of the circuit. Moreover, its EMI noise is very low, which is important in high speed applications.

Disadvantages

Despite these advantages, the MD918 IC has some drawbacks as well. Its input resistance is relatively low and it has a limited processing speed. Furthermore, due to its small size and high voltage ratings, it can be easily damaged. Finally, its price is quite high, which can be a limitation for some applications.

Conclusion

In conclusion, the MD918 is a high voltage ultra-narrow bipolar transistor array, which offers excellent performance for high speed and power amplifier applications. It offers a wide range of advantages, including low power consumption, high speed, precise operation, and a wide operating range. However, these advantages must be weighed against its relatively low input resistance and its high cost.

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