MMBFJ271

Overview

The MMBFJ271 is a P-Channel Junction Field Effect Transistor (JFET) switch manufactured by ON Semiconductor. It operates within a Drain-Gate Voltage range of -30 V and a Gate-Source Voltage limit of 30 V. The device supports an operating junction temperature from -55°C to 150°C with a total power dissipation of 225 mW at 25°C. Key electrical characteristics include a Gate-Source Breakdown Voltage of 30 V, a Gate Reverse Current of 200 pA maximum, and a Gate-Source Cutoff Voltage between 1.5 V and 4.5 V. The Zero-Gate Voltage Drain Current ranges from -6.0 mA to -50 mA, while the Forward Transfer Conductance spans 8000 to 18000 µmhos.

Feature Summary

• Designed specifically for low-level analog switching applications
• Suitable for use in sample and hold circuits
• Compatible with chopper stabilized amplifier configurations

Applications

• Low level analog switching
• Sample and hold circuits
• Chopper stabilized amplifiers

Procurement Notes

Verify current availability status as the component may be discontinued or subject to obsolescence notices. Confirm that the ordering suffix matches the specific package variant required for your design. Ensure compliance with RoHS directives if applicable to your manufacturing standards. Review the latest datasheet revision for any updates to absolute maximum ratings or thermal characteristics before finalizing procurement orders.

Selection Notes

Select this component when a P-Channel JFET is required for precise analog signal routing. Consider the SOT-23 package constraints regarding thermal resistance and power dissipation limits. Evaluate the gate-source cutoff voltage specifications against your control logic levels. Verify that the drain current requirements fall within the specified zero-gate voltage range for optimal performance.

Part Context

This device belongs to the family of P-Channel Switches produced by ON Semiconductor, formerly Fairchild Semiconductor. It utilizes process technology designed to optimize performance for analog signal handling. The component is housed in a compact SOT-23 surface mount package, facilitating integration into space-constrained electronic designs requiring high input impedance switching capabilities.

Replacement Considerations

Check for updated part numbers resulting from the Fairchild Semiconductor integration into ON Semiconductor, where underscores may have been replaced by dashes. Consult official substitution lists for equivalent P-Channel JFETs with matching pinouts and electrical characteristics.

FAQ

What is the maximum Drain-Gate Voltage rating?

The absolute maximum Drain-Gate Voltage rating is -30 V.

What is the typical application for this device?

It is designed for low level analog switching, sample and hold circuits, and chopper stabilized amplifiers.

What is the operating junction temperature range?

The operating junction temperature range is from -55°C to 150°C.