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Product Detailed Parameters
- Description：JFET P-CH 30V TO92-3
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Bulk
- FET Type：P-Channel
- Voltage - Breakdown (V(BR)GSS)：30 V
- Drain to Source Voltage (Vdss)：-
- Current - Drain (Idss) @ Vds (Vgs=0)：2 mA @ 15 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：500 mV @ 1 nA
- Input Capacitance (Ciss) (Max) @ Vds：-
- 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 Fairchild Semiconductor J270 is a P-Channel Silicon Small Signal Junction Field-Effect Transistor (JFET) housed in a TO-92 package. It is designed for general-purpose amplification and switching applications requiring low noise performance. The device operates with a drain-source voltage of 30V and dissipates up to 350mW of power. Key electrical characteristics include a gate-source cutoff voltage typically ranging from -0.5V to -4V, ensuring reliable turn-off capabilities in digital circuits.
Feature Summary
- P-Channel silicon construction for stable operation
- Low noise performance suitable for signal amplification
- Compact TO-92 through-hole packaging
Applications
- General-purpose analog signal amplification
- Low-noise pre-amplifier stages
- Digital switching circuits
Procurement Notes
Verify the manufacturer origin carefully as J270 is produced by multiple vendors including Texas Instruments and ON Semiconductor. Confirm the specific datasheet matches the required pinout and electrical tolerances for your design. Ensure the TO-92 package variant aligns with your PCB footprint requirements before finalizing procurement.
Selection Notes
Select this component when a P-Channel JFET is required for low-noise applications. Compare the gate-source cutoff voltage range against your circuit's biasing needs. Verify that the 30V breakdown voltage and 350mW power dissipation meet the thermal and voltage constraints of the target application environment.
Part Context
The J270 belongs to the family of small-signal JFETs widely used in discrete transistor circuits. It serves as a fundamental active component for impedance matching and signal conditioning. The TO-92 form factor allows for easy integration into breadboards and standard through-hole PCB layouts common in educational and prototyping environments.
Replacement Considerations
Direct substitutes include J270D26Z and J270/D26Z from Texas Instruments. Alternative sources are available from ON Semiconductor and Fairchild under similar part numbers. Cross-reference datasheets to ensure compatibility regarding pin configuration and maximum ratings.
