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Product Detailed Parameters
- Description：JFET N-CH 40V TO92-3
- Series：-
- Mfr：onsemi
- Package：Bulk
- FET Type：N-Channel
- Voltage - Breakdown (V(BR)GSS)：40 V
- Drain to Source Voltage (Vdss)：-
- Current - Drain (Idss) @ Vds (Vgs=0)：30 µA @ 10 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：600 mV @ 1 nA
- Input Capacitance (Ciss) (Max) @ Vds：3pF @ 10V
- Resistance - RDS(On)：-
- Power - Max：350 mW
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The PN4117A is an N-channel Junction Field-Effect Transistor (JFET) designed for low current DC and audio applications. It provides excellent performance as an input stage for sub-picoamp instrumentation or high impedance signal sources. The device features a Gate-Source Breakdown Voltage of 40V, a Zero-Gate Voltage Drain Current range of 30 to 90 µA, and a Gate-Source Cutoff Voltage between -0.6V and -1.8V. It operates within a temperature range of -55°C to +150°C and utilizes a TO-92 package.
Feature Summary
- Designed for low current DC and audio applications
- Provides excellent performance as an input stage for sub-picoamp instrumentation
- Suitable for any high impedance signal sources
- Sourced from process 53
Applications
- Sub-picoamp instrumentation input stages
- High impedance signal source interfacing
- Low current DC applications
- Audio applications
Procurement Notes
Verify the manufacturer origin, as Fairchild Semiconductor was acquired by ON Semiconductor. Confirm that the part number suffix 'A' corresponds to the specific binning and electrical characteristics defined in the datasheet. Ensure the component matches the TO-92 package dimensions and lead configuration shown in the official documentation before integration.
Selection Notes
Select this component when designing circuits requiring ultra-high input impedance and low leakage currents. The PN4117A is appropriate for precision analog front ends where gate reverse current must remain in the picoampere range. Consider the thermal resistance values if operating near the maximum junction temperature limits.
Part Context
This component belongs to the family of N-channel JFETs including variants like PN4117 and PN4118. These devices are typically used in discrete semiconductor applications requiring high input impedance. The 'A' suffix indicates specific electrical parameter bins compared to standard versions.
Replacement Considerations
Compatible substitutes include PN4117 and MMBF4117. Verify pinout compatibility and ensure the replacement meets the required V(BR)GSS and IDSS specifications.
