ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：JFET 2N-CH 40V TO78-7
- Series：U421
- Mfr：Linear Integrated Systems, Inc.
- Package：Bulk
- FET Type：2 N-Channel (Dual)
- Voltage - Breakdown (V(BR)GSS)：40 V
- Drain to Source Voltage (Vdss)：-
- Current - Drain (Idss) @ Vds (Vgs=0)：-
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：-
- Input Capacitance (Ciss) (Max) @ Vds：3pF @ 10V
- Resistance - RDS(On)：-
- Power - Max：500 mW
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-78-7 Metal Can
- Supplier Device Package：TO-78-7
- Grade：-
- Qualification：-
Download product information
Overview
The U421 TO-78 7L ROHS is a monolithic dual N-channel JFET manufactured by Linear Integrated Systems, Inc. It features a TO-78-7 metal can package designed for through-hole mounting. The device supports a drain-source voltage of 40 V and dissipates up to 500 mW of power. Key electrical characteristics include an input capacitance of 3 pF measured at 10 V. The component is classified as a low leakage, low drift integrated circuit suitable for precision analog applications.
Feature Summary
- Monolithic dual N-channel JFET configuration
- Low leakage and low drift performance
- TO-78-7 metal can package for through-hole mounting
Applications
- Precision analog signal processing circuits
- Low noise amplifier stages
- High impedance input buffers
Procurement Notes
Verify the specific ordering suffix matches the required package variant. Confirm RoHS compliance status with the manufacturer or authorized distributor. Request official datasheets to validate electrical parameters against design requirements. Ensure supply chain authenticity to prevent counterfeit components. Check lead times and availability directly with suppliers before finalizing procurement plans.
Selection Notes
Select this component for applications requiring low input capacitance and high stability. Consider the TO-78-7 package constraints for PCB layout and thermal management. Evaluate the 40 V drain-source voltage limit against circuit operating conditions. Compare performance metrics with alternative dual JFETs if space or cost is critical. Verify compatibility with existing manufacturing processes for through-hole assembly.
Part Context
The U421 belongs to the SST-U421 series from Linear Integrated Systems, Inc., which offers advanced dual N-channel JFETs in various packages including TO-71, PDIP, and SOIC. This specific variant utilizes the TO-78-7 metal can form factor. The series is known for its reliability in precision analog applications where low drift and leakage are essential.
Replacement Considerations
The U422 TO-78 7L ROHS is a related part within the same product family from Linear Integrated Systems, Inc. Both devices share similar packaging and general JFET characteristics. Verify specific electrical parameter differences between U421 and U422 before substitution.
