BF862,235

Overview

The BF862,235 is an N-channel symmetrical silicon junction Field-Effect Transistor (JFET) manufactured by NXP Semiconductors. It is housed in a SOT23 plastic surface-mounted package with three terminals and a 1.9 mm pitch. The device features interchangeable drain and source terminals, allowing for flexible circuit orientation. Key electrical specifications include a maximum drain-source voltage of -20V and a continuous drain current of 25mA. This component is designed for general-purpose switching and amplification applications requiring low noise and high input impedance characteristics typical of JFET technology.

Feature Summary

• Symmetrical N-channel junction FET architecture enabling interchangeable drain and source connections
• SOT23 surface-mount package design for compact PCB integration
• Silicon construction optimized for stable junction field-effect operation

Applications

• General-purpose signal switching circuits
• Low-noise analog signal amplification stages
• Input buffering for high-impedance sensor interfaces

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component when a symmetrical N-channel JFET is required for low-noise analog applications. The interchangeable drain and source terminals provide layout flexibility. Ensure the -20V voltage rating and 25mA current capacity meet the circuit requirements. The SOT23 package is suitable for space-constrained designs. Confirm that the discontinuation status does not impact long-term production viability.

Part Context

The BF862 belongs to NXP's discrete semiconductor portfolio, specifically within the junction FET category. It serves as a fundamental active component for analog signal processing. The part is distinct from MOSFETs due to its depletion-mode operation and higher input impedance. It is commonly used in audio preamplifiers and RF front-end stages where low distortion is critical.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the discontinued status, alternative sourcing requires careful evaluation of pin compatibility and electrical parameter equivalence with other N-channel JFETs.