J111RLRAG

Overview

The onsemi J111RLRAG is an N-channel depletion-mode Junction Field-Effect Transistor (JFET) designed for chopper applications. It operates within a drain-gate voltage range of -35 Vdc and a gate-source voltage range of -35 Vdc, with a maximum total device dissipation of 350 mW at 25°C ambient temperature. The zero-gate-voltage drain current (IDSS) ranges from 2.0 mA to 20 mA, while the static drain-source on resistance (rDS(on)) has a maximum value of 30 Ω. The component features a TO-92 package (Case 29-11) with Style 5 pin configuration: Pin 1 as Drain, Pin 2 as Source, and Pin 3 as Gate. It supports an operating junction temperature range of -65°C to +150°C.

Feature Summary

• N-channel silicon field-effect transistor optimized for low-noise chopper circuits
• Depletion mode operation with defined gate-source cutoff characteristics
• Lead-free compliant packaging available under specific ordering suffixes

Applications

• Chopper-stabilized amplifier input stages
• Low-noise analog signal switching
• Precision DC offset cancellation circuits

Procurement Notes

Verify the complete part number against official distributor catalogs to ensure correct package style and tape-and-reel specifications. Confirm that the 'G' suffix indicates lead-free compliance if required by assembly processes. Cross-reference the specific reel quantity and orientation data with the manufacturer's Tape and Reel Packaging Specifications Brochure prior to procurement.

Selection Notes

Select this component when designing circuits requiring an N-channel depletion JFET with a maximum rDS(on) of 30 Ω and IDSS up to 20 mA. Ensure the application voltage does not exceed the -35 Vdc limits for both drain-gate and gate-source terminals. Consider the thermal derating factor of 2.8 mW/°C above 25°C ambient temperature for power dissipation calculations in enclosed environments.

Part Context

The J111RLRAG belongs to the J11x series of JFET Chopper Transistors manufactured by onsemi. This series includes variants such as the J111, J112, and J113, which differ primarily in their IDSS and VGS(off) ranges. The RLRA suffix specifically denotes a tape-and-reel packaging format intended for automated surface-mount or through-hole assembly processes.

Replacement Considerations

Direct replacements include other J111 variants from different manufacturers such as NXP Semiconductors or Fairchild Semiconductor, provided electrical parameters like IDSS and rDS(on) are compatible. Verify pinout compatibility, as TO-92 packages may have varying pin configurations (e.g., Style 5 vs. Style 7). Ensure any substitute meets the same -35 Vdc voltage ratings and thermal requirements.