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Product Detailed Parameters
- Description：JFET N-CH 25V TO92-3
- Series：-
- Mfr：onsemi
- Package：Bulk
- FET Type：N-Channel
- Voltage - Breakdown (V(BR)GSS)：25 V
- Drain to Source Voltage (Vdss)：-
- Current - Drain (Idss) @ Vds (Vgs=0)：60 mA @ 15 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：600 mV @ 10 nA
- Input Capacitance (Ciss) (Max) @ Vds：-
- Resistance - RDS(On)：-
- Power - Max：625 mW
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The BF246B_J35Z is an N-channel silicon junction field-effect transistor (JFET) manufactured by onsemi. It utilizes a TO-92-3 through-hole package and operates with a maximum drain-source breakdown voltage of 30 V and a gate-source breakdown voltage of -30 V. The device supports a continuous drain current of 15 mA and dissipates up to 350 mW of power. It functions within a temperature range of -55°C to +150°C TJ. The component is classified as obsolete and no longer in production.
Feature Summary
- N-channel silicon JFET technology for RF applications
- Through-hole TO-92-3 mounting configuration
- High thermal stability with 150°C maximum junction temperature
Applications
- RF signal switching circuits
- Low-noise amplifier input stages
- Impedance matching networks
Procurement Notes
This component is officially marked as obsolete and no longer manufactured by onsemi. Sourcing new units from authorized distributors is not possible. Engineers must verify the availability of equivalent replacement parts or consider redesigning the circuit to accommodate currently available active components that meet the original electrical specifications.
Selection Notes
Selection should focus on identifying functional equivalents with matching N-channel polarity, 30V breakdown ratings, and TO-92-3 packaging. Verify that substitute JFETs maintain compatible pinch-off voltage ranges and low noise figures if used in sensitive RF front-end applications. Ensure the replacement part supports the required operating temperature range of -55°C to +150°C.
Part Context
The BF246B belongs to the BF24x series of N-channel JFETs historically produced by Fairchild Semiconductor before its acquisition by onsemi. These devices were commonly used in analog and RF circuits requiring high input impedance and low noise. The _J35Z suffix typically denotes specific binning or packaging variations within the legacy Fairchild product line.
Replacement Considerations
Public records indicate parameter-equivalent alternatives such as the BF246B from other manufacturers like NXP Semiconductors. Verify pinout compatibility and electrical tolerance matches before substitution. No official onsemi cross-reference list is provided for this obsolete part.
