F4901 1.1a 24v Schematic ^new^ May 2026

F4901 1.1A 24V Schematic: A Comprehensive Overview

Part Type:

Polyfuse / PTC (Positive Temperature Coefficient) Resettable Fuse. Operating Voltage ( Vmaxcap V sub m a x end-sub ): 24V. Holding Current ( Iholdcap I sub h o l d end-sub ): 1.1A.

• Function: Steps the 24V down to 5V or 3.3V for the logic microcontroller.
• PWM Controller: A switching regulator IC (e.g., LM2596 or similar SOP-8 package).
• Inductor: A power inductor (e.g., 33uH or 47uH) labeled L2.
• Output: Stable 5V rail labeled VCC or +5V_LOGIC.

and a sense circuit to report a "blown" or tripped state to an external controller. Filtering Capacitors f4901 1.1a 24v schematic