BF245B_D75Z

Overview

The BF245B_D75Z is an N-channel depletion-mode JFET manufactured by onsemi. It is housed in a TO-92-3 (TO-226AA) through-hole package with formed leads. The device operates within a drain-source voltage range of ±30 V and supports a maximum continuous drain current of 100 mA. Total device dissipation is rated at 350 mW at 25°C ambient temperature, derating above this threshold. The component is classified as obsolete.

Feature Summary

• N-channel junction field-effect transistor designed for RF applications
• Depletion mode operation suitable for UHF band amplification
• Through-hole mounting configuration in a cylindrical plastic epoxy package

Applications

• VHF/UHF amplifier circuits
• RF small signal processing
• Low noise front-end stages

Procurement Notes

This product is officially marked as obsolete by the manufacturer and is no longer in production. Verification of availability should focus on surplus or secondary market sources rather than standard distribution channels. Buyers must confirm the specific lot date code and physical condition upon acquisition, as stock levels vary significantly across non-official suppliers. Regulatory compliance status should be cross-referenced with the specific batch documentation provided by the vendor.

Selection Notes

Engineers replacing this component should evaluate alternative N-channel JFETs with comparable pinch-off characteristics and low-noise performance. The replacement must match the TO-92 form factor if board space constraints are critical. Electrical parameters such as gate-source cutoff voltage and forward transconductance should be verified against the original circuit requirements to ensure signal integrity is maintained in RF designs.

Part Context

The BF245B_D75Z belongs to the BF245 family of silicon N-channel JFETs produced by onsemi. This series includes variants like the BF245A and BF245C, differentiated primarily by their gain groupings and specific electrical tolerances. The D75Z suffix indicates the specific tape-and-box packaging format used for this particular orderable part number.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided data. Engineers should consult manufacturer cross-reference guides for generic N-channel JFET replacements that meet the required V_DS and I_D specifications.