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Product Detailed Parameters
- Description：JFET N-CH 30V TO92
- Series：-
- Mfr：onsemi
- Package：Bulk
- FET Type：N-Channel
- Voltage - Breakdown (V(BR)GSS)：30 V
- Drain to Source Voltage (Vdss)：30 V
- Current - Drain (Idss) @ Vds (Vgs=0)：5 mA @ 15 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：500 mV @ 10 nA
- Input Capacitance (Ciss) (Max) @ Vds：10pF @ 15V (VGS)
- Resistance - RDS(On)：100 Ohms
- Power - Max：350 mW
- Operating Temperature：-65°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 Long Body
- Supplier Device Package：TO-92 (TO-226)
- Grade：-
- Qualification：-
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Overview
The MPF4393 is an N-channel depletion-mode JFET switching transistor manufactured by onsemi. It features a maximum Drain-Source Voltage (VDS) of 30 Vdc and a Gate-Source Voltage (VGS) rating of 30 Vdc. The device operates within a channel temperature range of -65 to +150 °C. Electrical characteristics include a Zero-Gate-Voltage Drain Current (IDSS) ranging from 5.0 mA to 30 mA, with a typical Forward Transfer Admittance (|yfs|) of 12 mmhos at 1.0 kHz. Input capacitance is typically 6.0 pF.
Feature Summary
- Designed specifically for analog switching and chopper applications
- Utilizes a TO-92 through-hole package configuration
- Supports high channel operating temperatures up to 150 °C
Applications
- Analog signal switching circuits
- Chopper amplifier designs
- Low-level signal routing
Procurement Notes
Verify the specific ordering suffix when purchasing. Standard bulk packaging uses 1000 units per bulk container. Ammo box variants are available for tape and reel configurations. Confirm Pb-Free status if required by assembly specifications. Ensure the component matches the exact pinout and electrical tolerances defined in the official datasheet before integration.
Selection Notes
Select this component based on the required IDSS range of 5.0 mA to 30 mA. Verify that the 30 Vdc voltage ratings align with the circuit's maximum operating conditions. Consider the TO-92 package constraints for thermal dissipation and board space. Compare against the MPF4392 if higher drain current or different admittance characteristics are needed.
Part Context
This part belongs to the MPF439x series of N-channel JFETs. It shares the same physical package and general topology as the MPF4392 but differs in electrical parameters, specifically the zero-gate-voltage drain current and forward transfer admittance ranges. Both devices serve similar roles in low-noise analog switching environments.
Replacement Considerations
MPF4392 serves as a functional alternative within the same series. Substitution requires verification of IDSS and |yfs| parameter compatibility. Other generic N-channel JFETs may require significant circuit redesign due to differences in pinch-off voltage and capacitance values.
