MPF102 N-Channel JFET: Datasheet, Pinout, and Equivalents

The MPF102 is a popular N-Channel JFET that is commonly used in low power amplification applications or electronic switching applications such as low ON resistance analog switching. It can be used for amplification in the VHF region of frequencies and other audio amplification-related applications. The MPF102 possesses high gain and low noise features which make it ideal to use for the amplification of very small or low-level signals like the RF signal, audio signal, etc.

Sadly, the MPF102 is no longer in production. You can find it in some suppliers that still have them in stock or you can replace them with other new designs like J113, NTE457, etc.

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Footprint

3D Model

• Transistor Type: JFET N Channel

• Package Type: TO-92

• Max Drain to Source Voltage: 25 V

• Max Drain to Gate Voltage: 25 V

• Max Gate to Source Voltage: -25 V

• Max Continues Gate Current: 10 mA

• Max Power Dissipation: 350 mW

• Storage temperature range: -65 to +150 Centigrade

• Low Noise & High Gain

ON Semiconductor MPF102 technical specifications, attributes, parameters and parts with similar specifications to ON Semiconductor MPF102.

BF245C, BF245B, 2N5457, 2N5458, NTE457, J113, 2N3819, 2N4416, NTE312, 2N5638, 2N5640, 2SK162, 2SK518

Please check the pin configuration and parameters before replacing them in your circuit.

The MPF102 can be used in various amplification and switching applications. Its high gain and low noise features make it ideal to be used for the amplification of very small signals. The MPF102 can be used in signal booster circuits, audio preamplifier circuits, and audio amplifier stages, etc. As a switch, the MPF102 can be used to drive loads under 10mA such as in low ON resistance analog switching.

A JEFT is considered "ON" by default, that is even if there is no voltage applied to its gate and source terminals, the JFET will still allow current to flow from Drain to Source. In order to stop the JEFT from conducting current, a negative gate voltage has to be applied to the gate pin, for the MPF102 it should be typically -7.5V.

The images above showed how a load (LED) can be toggled using a JFET like MPF102. When the gate pin is grounded, the JFET allows current to flow from Drain to Source, and thus the LED is turned on. When it is biased using -7.5V on the gate pin, the JFET blocks the flow of current between the Drain and Source pin and thus turns off the LED.

• VHF signal amplifier

• Low-level signal amplifier

• Audio preamplifiers

• Sensor circuits

• Audio amplifier stages

• Audio noise cancellation

• Low ON resistance analog switching

MPF102 Package Outline

MPF102 Mechanical Data

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Download datasheets and manufacturer documentation for ON Semiconductor MPF102.