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Product Detailed Parameters
- Description：JFET N-CH 25V TO92-3
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- FET Type：N-Channel
- Voltage - Breakdown (V(BR)GSS)：25 V
- Drain to Source Voltage (Vdss)：-
- Current - Drain (Idss) @ Vds (Vgs=0)：500 mA @ 15 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：4.5 V @ 1 µA
- Input Capacitance (Ciss) (Max) @ Vds：-
- Resistance - RDS(On)：3 Ohms
- 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 J105_D27Z is a small signal field-effect transistor manufactured by onsemi, formerly Fairchild Semiconductor. It is an N-channel silicon Junction FET housed in a TO-92 cylindrical plastic package with three through-hole terminals. The device operates in depletion mode and is designed for switching applications. Key electrical parameters include a maximum drain-source on-resistance of 6 ohms and a maximum feedback capacitance (Crss) of 35 pF. The component supports a maximum operating temperature of 150 °C.
Feature Summary
- N-channel silicon junction field-effect transistor construction
- Depletion mode operation capability
- Through-hole TO-92 packaging for standard board mounting
Applications
- Electronic circuit switching
- Small signal amplification stages
- General-purpose discrete transistor applications
Procurement Notes
Verify the manufacturer origin carefully, as this part was originally produced by Fairchild Semiconductor before its acquisition by onsemi. Confirm that the specific D27Z suffix corresponds to the required packaging and marking specifications for your assembly process. Ensure compatibility with legacy design requirements referencing the original Fairchild part numbers.
Selection Notes
Select this component when an N-channel depletion mode JFET is required in a TO-92 package. Consider the 6 ohm on-resistance limit for low-current switching tasks. Verify that the 35 pF feedback capacitance meets the bandwidth requirements of the intended signal path. Ensure the 150 °C thermal rating aligns with the system's thermal management strategy.
Part Context
This component belongs to the family of small signal junction field-effect transistors. It shares the core J105 designation with variants such as J105/D10Z and J105/D11Z, which may differ in pinout or specific electrical tolerances. The D27Z suffix typically denotes specific packaging or testing criteria within the broader J105 product line.
Replacement Considerations
Direct substitutes may include other N-channel JFETs in TO-92 packages with similar on-resistance and capacitance values. Cross-referencing with J105 variants like J105/D10Z is recommended to verify pinout compatibility. Ensure any replacement maintains the depletion mode characteristic and fits the existing PCB footprint.
