Fc 51 Ir Sensor Datasheet Hot !full! Jun 2026

The FC-51 module is straightforward to wire, featuring a simple 3-pin male header for easy connection to microcontrollers like Arduino or Raspberry Pi.

If your FC-51 module is hot, the issue is almost always centered around one of three areas: incorrect power wiring, overvoltage, or a short circuit within the components. 1. Reversed Power Polarity (Most Common)

Based on typical FC-51 datasheet information , the module consists of an IR emitter (transmitter) and an IR receiver (photodiode) paired with an LM393 comparator chip for digital output. 3.0V – 6.0V DC fc 51 ir sensor datasheet hot

Gently bend the IR LEDs so that their optical axes converge slightly. Then recalibrate with the potentiometer.

Emits an infrared beam at a specific frequency (usually 950nm). The FC-51 module is straightforward to wire, featuring

Input = 9V, Output = 5V, Current draw = 50 mA Power dissipated = (9V – 5V) × 0.05A = 0.2 Watts In a small SOT-23 package, that’s noticeably warm (~40–50°C).

✔️ Operating Voltage: 3.3V - 5V ✔️ Detection Range: 2cm ~ 30cm (Adjustable) ✔️ Interface: Digital Output (High/Low) ✔️ Built-in LED Indicator Reversed Power Polarity (Most Common) Based on typical

📄 No single authoritative manufacturer datasheet exists for the FC‑51; it is a de‑facto community‑standard module produced by multiple vendors. The specifications above represent the consensus from dozens of product listings and independent measurements.

If the IR transmitter LED or the LM393 IC is damaged, it may create a high-resistance path that generates excessive heat.