Fc 51 Ir Sensor Datasheet Hot File

| Specification | Details | | :--- | :--- | | | FC-51 | | Operating Voltage | 3.0V – 6.0V DC (3.3V – 5V DC typical) | | Current Consumption | ~23mA at 3.3V, ~43mA at 5.0V | | Detection Range | 2cm – 30cm (adjustable via potentiometer) | | Detection Angle | 35° | | Output Type | Digital switching output (0 and 1) | | Output Logic | Active Low : Outputs LOW (0V) when obstacle is detected Inactive High : Outputs HIGH (~5V) when no obstacle is detected | | Comparator IC | LM393 | | Board Dimensions (PCB) | 3.1cm (L) x 1.4cm (W) | | Overall Dimensions | 4.5cm (L) x 1.4cm (W) x 0.7cm (H) |

| | FC-51 | TCRT5000 | | :----------------- | :-------------------------------------------------- | :------------------------------------------------- | | Primary Use | Obstacle Avoidance / Proximity | Line Following / Reflective Sensing | | Typical Range | 2cm - 30cm | 1mm - 8mm (very short range) | | Output | Digital (HIGH/LOW via LM393 comparator) | Analog (reflected light intensity) | | Best For | Detecting objects at a short distance | Distinguishing between black and white surfaces |

For battery-powered or heat-sensitive projects, switch to a 5V supply and add a transistor to pulse the IR LED. Your sensor—and your fingers—will thank you. fc 51 ir sensor datasheet hot

Approximately 23 mA at 3.3V and 43 mA at 5.0V.

To ensure your FC-51 sensors run cool and last for years, implement these design practices: | Specification | Details | | :--- |

The FC‑51 measures reflected IR intensity, which varies dramatically with surface color, texture, and angle. A white matte surface at 30 cm may produce the same reflected signal as a black surface at 5 cm.

| Parameter | Value | |-----------|-------| | Supply voltage | 3.3V – 12V (5V recommended) | | Current consumption | 20–50 mA (depends on LED and regulator) | | Sensing distance | 2cm – 30cm (depends on object reflectivity) | | Output type | Digital (TTL, active low) | | Comparator IC | LM393 | | Operating temp range | –25°C to +85°C | To ensure your FC-51 sensors run cool and

The FC-51 module relies on three primary hardware components, any of which can become the source of heat:

If your application allows, power the VCC pin through a microcontroller pin, turning the sensor on only when you need to read it. 6. Applications of the FC-51 Sensor Obstacle Avoidance Robots: Essential for autonomous bots.