“When NXP discontinued the BF862, customers faced lost support for legacy systems, the need to re-qualify new components, and unplanned end-of-life orders to maintain product continuity,” according to Linear Integrated Systems. “Delivering lower noise, higher breakdown voltage, and special testing options, the LSBF862 ensures long-term support for designers transitioning from the discontinued NXP BF862.”
Relevant figures for the new part are: 4.0nV/√Hz max noise at 10Hz and 40V minimum gate-source breakdown.
The testing options are for dc parameters including: Vgs(off) and Idss “for both SOT-23 packaged and bare-die versions of the LSBF862”, said the company, which added that it is “built on a radiation-tolerant JFET process”.
It typically has a gain (Yfs) of 45mS and 10pF capacitance.
Use is expected in analogus front-ends, low-noise amplifiers, high-impedance probes, photo diode amplifiers and discrete op-amps.
Founded in 1987 by John Hall, Cindy Johnson (CEO) and John Hall, Linear Integrated Systems is a privately held company headquartered in Fremont, California, making more than 2,000 second-source replacements for legacy components.
