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The J111_D75Z is an N-channel silicon small-signal Junction Field-Effect Transistor (JFET) manufactured by onsemi. It operates in depletion mode and is housed in a TO-92 cylindrical plastic/epoxy package with three leads. Key electrical characteristics include a maximum drain-source on-resistance of 30 Ω and a maximum feedback capacitance (Crss) of 5 pF. The device is RoHS compliant and designed for general-purpose switching and amplification applications within standard operating temperature ranges.
Verify the manufacturer designation, as historical data lists Rochester Electronics while current branding may reflect onsemi. Confirm the specific suffix D75Z corresponds to the intended packaging or tape-and-reel configuration if applicable, as datasheets primarily reference the base J111 part number. Ensure RoHS compliance status matches project requirements.
Select this component for low-power N-channel JFET applications requiring a TO-92 form factor. Consider the 30 Ω on-resistance limit when designing for minimal voltage drop in switched paths. The low Crss value supports high-frequency signal handling compared to higher-capacitance alternatives.
The J111 is a legacy small-signal JFET originally standardized under JEDEC codes. While historically associated with various manufacturers including Rochester Electronics, it remains a common choice for discrete analog designs. The D75Z suffix likely denotes specific packaging or ordering variations within the broader J111 family.
Direct substitutes include other N-channel JFETs in TO-92 packages such as the 2N5457 or 2N5458, provided pinouts and electrical limits are compatible. Verify that replacement devices meet the same 30 Ω on-resistance and capacitance specifications.