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Product Detailed Parameters
- Description：JFET N-CH 30V TO206AC
- Series：-
- Mfr：Vishay Siliconix
- Package：Tube
- FET Type：N-Channel
- Voltage - Breakdown (V(BR)GSS)：30 V
- Drain to Source Voltage (Vdss)：-
- Current - Drain (Idss) @ Vds (Vgs=0)：200 mA @ 10 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：1.5 V @ 3 nA
- Input Capacitance (Ciss) (Max) @ Vds：160pF @ 0V
- Resistance - RDS(On)：7 Ohms
- Power - Max：500 mW
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-206AC, TO-52-3 Metal Can
- Supplier Device Package：TO-206AC (TO-52)
- Grade：-
- Qualification：-
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Overview
The U291-E3 is an N-Channel JFET analog switch manufactured by Vishay Siliconix in a hermetically sealed TO-206AC (TO-52) package. It features a gate-source cutoff voltage range of -1.5 V to -4.5 V, a maximum drain-source on-resistance of 7 Ω at 1 mA, and a typical drain-off current of 10 pA. The device exhibits a turn-on time of 14 ns and a reverse transfer capacitance of 30 pF. Absolute maximum ratings include a gate-source breakdown voltage of -30 V and an operating junction temperature range from -55 °C to +150 °C.
Feature Summary
- Low on-resistance for high-speed analog circuit performance
- Fast switching capability with negligible off-error
- Hermetically sealed case suitable for military applications
Applications
- Analog switches
- Choppers
- Sample-and-hold circuits
- Normally on switches
- Current limiters
Procurement Notes
Verify the component against the official Vishay datasheet Document Number 70235. Confirm the specific pinout configuration for the TO-206AC package matches your design requirements. Ensure that the ordering suffix corresponds to the correct RoHS compliance status as defined in the manufacturer's documentation before finalizing procurement.
Selection Notes
Select this component when low on-resistance and fast switching are critical. The TO-206AC package provides hermetic sealing required for harsh environments. Compare the -1.5 V to -4.5 V cutoff voltage range against system biasing needs. Verify that the 7 Ω maximum on-resistance meets the signal path loss specifications.
Part Context
This part belongs to the U290/U291 series of high-performance N-Channel JFET analog switches. The series is characterized by industry-low on-resistance and fast switching speeds. The U291 variant specifically targets applications requiring lower gate drive voltages compared to the U290 model while maintaining similar dynamic performance characteristics.
Replacement Considerations
Consult the J105/106/107 data sheet for similar products available in TO-226A (TO-92) packaging. Verify electrical compatibility if substituting with other Vishay JFET analog switches.
