J310G

Overview

The J310G is an N-channel depletion-mode Junction Field-Effect Transistor (JFET) manufactured by onsemi. It is housed in a TO-92 package and designed for VHF/UHF amplifier applications. Key electrical parameters include a Drain-Source Voltage of 25 Vdc, Gate-Source Voltage of 25 Vdc, and Forward Gate Current of 10 mAdc. The Zero-Gate-Voltage Drain Current ranges from 24 to 60 mAdc at VDS = 10 Vdc. The device operates within a junction temperature range of -65°C to +125°C.

Feature Summary

• N-channel depletion mode operation suitable for RF amplification
• Lead-free packaging available
• Designed for VHF and UHF frequency bands

Applications

• VHF/UHF amplifiers
• Electronic switching applications requiring low on-resistance analog switching

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm lead-free status and shipping configuration. Confirm that the TO-92 bulk or tape-and-reel variant matches the assembly requirements. Cross-reference the part number with official distributor catalogs to ensure compatibility with existing inventory systems.

Selection Notes

Select this component when designing circuits requiring N-channel JFETs for high-frequency signal processing. Ensure the application voltage does not exceed the 25 Vdc Drain-Source limit. Consider the thermal derating characteristics above 25°C when calculating power dissipation limits for the specific operating environment.

Part Context

This device belongs to the J309/J310 family of N-channel depletion JFETs. It shares similar structural characteristics with the J309 but differs in specific electrical thresholds such as gate-source cutoff voltage and zero-gate-voltage drain current ranges. Both devices utilize the same TO-92 mechanical outline.

Replacement Considerations

Public confirmed substitute part numbers: J309.