GP2Y0A41SK0F Infrared Distance Measuring Sensor (4-30cm Range) – Replacement for GP2D120XJ00F – High Precision Proximity Sensor with 20cm cable

Description

The GP2Y0A41SK0F is a short-range analog infrared distance measuring sensor from Sharp, designed as a direct replacement for the older GP2D120XJ00F model. It combines a position-sensitive detector (PSD), an infrared emitting LED, and a signal processing circuit in a single compact package, using triangulation to determine distance to a reflective object. The sensor outputs an analog voltage that varies inversely with distance: higher voltage for closer objects, lower voltage for farther objects. This makes it straightforward to interface with any microcontroller featuring an analog-to-digital converter, such as Arduino, ESP32, or Raspberry Pi (with external ADC).

The GP2Y0A41SK0F is specifically suited for close-proximity detection and obstacle avoidance in robotics, offering higher resolution at short range than longer-range Sharp sensors. Compared to the GP2D120XJ00F it replaces, the GP2Y0A41SK0F provides a significantly higher update rate and lower average current consumption while maintaining identical physical dimensions, pinout, and 4–30cm operating range, making it a true drop-in replacement. The sensor is RoHS-compliant and comes with a 20cm cable for convenient connection.

Features

• Direct Replacement for GP2D120XJ00F: Identical dimensions, pinout, and 4–30cm range, with higher update rate and lower average current draw.

• Triangulation Measurement Method: Resistant to variations in object reflectivity, environmental temperature, and operating duration.

• Short Measuring Cycle: Update period of 16.5ms ± 4ms enables rapid, responsive distance readings.

• Analog Voltage Output: Single analog output connects directly to any ADC input for simple distance measurement or comparator-based threshold detection.

• Compact Integrated Package: Combines PSD, IR LED, and signal processing circuit in a 29.5 × 13.0 × 13.5mm unit.

• Higher Resolution at Close Range: Shorter maximum range yields better precision for detecting nearby objects compared to longer-range alternatives.

• Low Average Current Consumption: 12mA typical average draw, though current is drawn in short bursts requiring power supply stabilization.

• 20cm Cable Included: Pre-attached cable simplifies connection to breadboards and microcontroller headers.

Technical Specifications