J177 P-Channel Silicon Field-effect Transistor TO-92

J177 P-Channel Silicon Field-Effect Transistor (TO-92) delivers low-noise, low-leakage P-channel JFET performance for analog switching, preamplifier input stages, and precision sample-and-hold circuits.

Key Features:

• 30 V Gate/Drain Rating: Supports up to 30 V for typical small-signal applications.
• Low Noise and Low Leakage: Optimized for low gate leakage and low noise in preamplifier and audio circuits.
• TO-92 Through-Hole Package: Easy to prototype and mount on standard PCBs.
• Interchangeable Drain/Source: Drain and source are interchangeable for simplified layout.
• Wide Temperature Range: Rated for industrial temperature ranges suitable for demanding environments.

Technical Specifications:

• Drain-Source Voltage (V_DS): −30 V
• Gate-Source Breakdown Voltage: ±30 V maximum
• Drain Current (I_DSS): Typical 1.5 mA at V_DS=15 V
• Gate Cutoff Voltage (V_GS(off)): Typical 0.8 V to 2.25 V
• Power Dissipation (P_tot): ~350–400 mW
• Dynamic Resistance: Refer to Id–Vgs curves in datasheet

Mechanical Specifications:

• Package Type: TO-92-3 through-hole plastic package
• Lead Finish: Tin-plated for standard soldering processes
• Body Material: Molded epoxy
• Mounting: Through-hole; upright mounting recommended for thermal stability

Dimensions:

• TO-92 Typical Body: Approx. 4.7 mm wide × 5.0 mm tall (body only)
• Lead Spacing and Length: Standard TO-92 lead pitch and length for PCB insertion and soldering

Pinout and Wiring:

• Pin 1 (left): Source (drain and source are interchangeable)
• Pin 2 (middle): Gate – bias appropriately for desired JFET operation
• Pin 3 (right): Drain
• Wiring Note: Include gate protection resistor or clamp for transient protection; use correct bias network to set I_DSS

Datasheet Reference:

• Refer to InterFET, NXP, or other manufacturer datasheets for complete electrical curves, mechanical drawings, and application notes

Applications:

• Audio Preamplifiers: Low-noise input stage for microphones and instruments
• Sample-and-Hold Circuits: Precision analog switching with low leakage
• Chopper-Stabilized Amplifiers: Low-level switching applications
• General Analog Switching: Any circuit benefiting from low-noise P-channel JFET characteristics

Equivalent Models:

• 2SJ177 / MMBFJ177: Equivalent P-channel JFETs in TO-92 or SMD packages
• J176: Similar performance with slightly different Idss range

Package Includes:

• 1 x J177 P-Channel Silicon Field-Effect Transistor (TO-92)