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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)：900 µA @ 20 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：800 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)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The J202 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-92-3 through-hole package. Key electrical specifications include a drain-source voltage (Vdss) of 40 V, a maximum power dissipation of 625 mW, and a gate-source cutoff voltage (VGS off) of 800 mV at 10 nA. The device supports a continuous drain current of 900 µA at 20 V and functions within a junction temperature range of -55°C to 150°C.
Feature Summary
- N-channel silicon construction for small-signal applications
- High input impedance characteristic inherent to junction field-effect technology
- Through-hole TO-92-3 packaging for standard board mounting
Applications
- General purpose switching circuits
- Low-noise amplifier stages
- Impedance matching networks
Procurement Notes
Verify the specific manufacturer designation, as the J202 part number is utilized by multiple vendors including onsemi and Calogic. Confirm RoHS compliance status, as some sources indicate non-compliance for certain manufacturers. Ensure the package type matches the required TO-92-3 form factor and validate that the 625 mW power rating aligns with thermal design requirements before procurement.
Selection Notes
Select this component for designs requiring an N-channel JFET with a 40 V breakdown voltage. The TO-92-3 package is suitable for prototyping or low-volume production where surface-mount options are not mandatory. Compare the 625 mW dissipation limit against circuit thermal loads. Consider alternative packages like SOT-23 if space constraints require surface-mount technology.
Part Context
The J202 belongs to the family of N-channel small-signal JFETs. It shares functional similarities with the MMBFJ202, which offers identical electrical characteristics but utilizes a SOT-23-3 surface-mount package. This component serves as a discrete semiconductor solution for analog signal processing tasks requiring high input impedance.
Replacement Considerations
The MMBFJ202 is a verified equivalent from onsemi, providing the same electrical performance in a SOT-23-3 package. Verify pinout compatibility when substituting between through-hole and surface-mount variants.
