J310_D26Z

Overview

The J310-D26Z is an N-channel silicon Junction Field-Effect Transistor (JFET) manufactured by onsemi. It is designed for UHF band applications and small signal amplification. The device features a maximum drain-source breakdown voltage of 60 V and a continuous drain current rating of 500 mA at 25°C. Key electrical parameters include a gate-source cutoff voltage of -4 V and a forward transconductance of 8000 µS at VDS=10V and ID=1mA. The component operates in depletion mode with a maximum power dissipation of 830 mW at 25°C ambient temperature. It utilizes a TO-92 cylindrical package.

Feature Summary

• N-channel silicon construction optimized for UHF frequency operations
• Small signal amplification capability with high transconductance
• Depletion mode operation suitable for linear amplifier circuits

Applications

• UHF band RF amplification stages
• Small signal voltage amplification
• Linear analog circuit design

Procurement Notes

Verify the specific suffix D26Z against official onsemi documentation to confirm packaging and tape-and-reel specifications. Ensure the component matches the TO-92 cylindrical form factor required for the target PCB layout. Cross-reference the manufacturer part number with the original Motorola datasheet if sourcing from legacy distributors, as onsemi acquired these product lines. Confirm lead-free compliance status through the official datasheet rather than distributor summaries.

Selection Notes

Select this component when designing UHF amplifiers requiring an N-channel JFET with a 60V breakdown voltage. The 8000 µS transconductance makes it suitable for low-noise small signal applications. Compare the TO-92 package constraints against available board space. Verify that the depletion mode operation aligns with the biasing requirements of the specific circuit topology being implemented.

Part Context

The J310 series originates from Motorola Semiconductor, which was later acquired by onsemi. This component represents a legacy silicon JFET widely used in RF and audio applications. The D26Z suffix typically denotes specific packaging or ordering variations within the standard J310 family. It serves as a direct replacement for older designs utilizing the original Motorola J310 designation.

Replacement Considerations

• MMBFJ310LT1G
• MMBFJ310LT1

FAQ

What is the operating mode of the J310-D26Z?

The J310-D26Z operates in depletion mode, meaning it conducts current when the gate-source voltage is zero and requires a negative gate-source voltage to turn off.

What is the maximum drain-source voltage rating?

The maximum drain-source breakdown voltage (BVdss) for the J310-D26Z is 60 V.

Which package type does the J310-D26Z use?

The component is housed in a TO-92 cylindrical plastic package with three leads.