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Product Detailed Parameters
- Description：JFET P-CH 25V SOT89-3
- Series：-
- Mfr：Linear Integrated Systems, Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- FET Type：P-Channel
- Voltage - Breakdown (V(BR)GSS)：25 V
- Drain to Source Voltage (Vdss)：-
- Current - Drain (Idss) @ Vds (Vgs=0)：2.6 mA @ 10 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：150 mV @ 0.1 µA
- Input Capacitance (Ciss) (Max) @ Vds：105pF @ 10V
- Resistance - RDS(On)：-
- Power - Max：400 mW
- Operating Temperature：-55°C ~ 135°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89-3
- Grade：-
- Qualification：-
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Overview
The LSJ74A is a P-Channel Junction Field-Effect Transistor (JFET) manufactured by Linear Integrated Systems, Inc. It is designed for surface-mount applications and housed in the SOT-89-3 package. The device features a maximum drain-source voltage of 25V and a power dissipation rating of 400mW. Key electrical characteristics include a gate-source capacitance of 105pF. The component is RoHS compliant and lead-free, suitable for environments requiring specific thermal performance.
Feature Summary
- P-Channel JFET configuration optimized for low-noise signal processing
- Surface-mount SOT-89-3 package design for compact integration
- RoHS compliant construction ensuring environmental safety standards
Applications
- Ultra-low noise audio and acoustic signal processing circuits
- High-impedance sensor interface stages
- Precision analog front-end amplification systems
Procurement Notes
Verify the specific suffix designation to confirm the SOT-89-3 package variant, as the LSJ74A series also includes TO-92 options. Ensure the procurement order explicitly states the RoHS compliance requirement if environmental regulations apply to the final assembly. Cross-reference the datasheet for exact thermal resistance values and absolute maximum ratings prior to PCB layout to prevent thermal overstress during operation.
Selection Notes
Select this component when a P-Channel JFET with moderate voltage handling and surface-mount convenience is required. The SOT-89-3 form factor offers a balance between thermal dissipation capabilities and board space efficiency compared to smaller packages. Consider the 105pF input capacitance for high-frequency response limitations in the specific circuit topology.
Part Context
The LSJ74A belongs to the LSJ/SST74 series from Linear Integrated Systems, Inc., which specializes in discrete JFETs for high-performance analog applications. This series is engineered to provide consistent electrical characteristics across production batches, supporting designs that demand stability in low-noise environments.
Replacement Considerations
Direct substitutes must match the P-Channel JFET type, 25V rating, and SOT-89-3 footprint. Verify pinout compatibility and thermal characteristics before swapping. No specific alternative part numbers are publicly confirmed for direct replacement.
