Fc 51 Ir Sensor Datasheet Link Jun 2026

If you are planning to integrate this sensor into a specific design, let me know:

Black objects absorb infrared light rather than reflecting it. The sensor may fail to detect dark objects unless they are extremely close.

The FC-51 IR sensor boasts several key features that make it an attractive choice for various applications:

Thanks to its simplicity and reliability, the FC-51 is used in hundreds of projects. Here are the top applications: Fc 51 Ir Sensor Datasheet

The LM393 comparator has an open-collector output on some designs, requiring a pull-up resistor internally. In practice, this means the signal idles HIGH and pulls LOW upon detection.

This article serves as your complete . We will cover everything from technical specifications and pin configuration to wiring diagrams, calibration, troubleshooting, and sample code.

However, finding a consolidated, detailed datasheet for the FC-51 can be challenging. Many sellers provide only basic pinouts, leaving users to guess at critical specifications like current consumption, detection range, and timing characteristics. If you are planning to integrate this sensor

⚠️ : The FC-51 module is sometimes found under other brand names or model numbers, such as "MH-B" or "MH-Sensor-Series Flying-fish".

When the object is near the threshold distance, the output can oscillate between HIGH and LOW, as noted in experimental testing. To mitigate this, implement software debouncing (e.g., require multiple consistent readings before triggering) or hysteresis in your code.

The FC-51 IR sensor module is an electronic component used for non-contact object detection and proximity sensing. It serves as a reliable, low-cost digital sensor. This article consolidates its technical specifications, working principle, pin configuration, practical application circuits, and calibration procedures into a single reference. While an official manufacturer datasheet remains elusive, the information here is compiled from technical documentation, component datasheets, and practical experiments, making it an essential guide for engineers, students, and hobbyists alike. Here are the top applications: The LM393 comparator

When designing circuits with the FC-51, understanding its absolute electrical and physical limitations is crucial. Below are the standard datasheet specifications: 3.3V to 5V DC Operating Current: ≥is greater than or equal to

| Pin Name | Description | |----------|-------------| | | Power supply (3.3–5V) | | GND | Ground | | OUT | Digital output (0V when obstacle present, Vcc when no obstacle) | | EN | Enable pin (leave floating or pull HIGH to enable; LOW may disable) – not always present on all clones |