★

4.9/5 Rating Rated by 800+ Customers on Google

✓

Genuine Products Quality checked before dispatch

⚡

Fast Dispatch Orders processed quickly

🚚

Pan India Delivery Trusted courier partners

🛠

Built for Makers Robotics • Electronics • DIY

🎓

Student Friendly Perfect for projects & learning

🚀

Startup India Recognized Recognized startup company

🏬

Physical + Online Store Visit us in Pimpri or shop online

📦

Secure Packaging Your components packed with care

★

4.9/5 Rating Rated by 800+ Customers on Google

✓

Genuine Products Quality checked before dispatch

⚡

Fast Dispatch Orders processed quickly

🚚

Pan India Delivery Trusted courier partners

🛠

Built for Makers Robotics • Electronics • DIY

🎓

Student Friendly Perfect for projects & learning

🚀

Startup India Recognized Recognized startup company

🏬

Physical + Online Store Visit us in Pimpri or shop online

📦

Secure Packaging Your components packed with care

TSOP1738 IR Receiver – Infrared Receiver

Specification	Details
Carrier Frequency	38 kHz
Operating Voltage	2.7V to 5.5V
Current Consumption	0.4mA to 1.5mA
Reception Distance	Up to 15 - 20 Meters
Reception Angle	± 45 Degrees
Output Type	Active Low (Digital)
Package Type	Through-Hole (3-Pin)

Price

🚚 Ships within 24 Hours
📦 Pan India Delivery

₹ 29.66

(Tax included)

Barcode: 92147

Product Description

The TSOP1738 IR Receiver is designed to provide high immunity against ambient light and spurious pulses from energy-saving lamps (like CFLs). The internal circuit includes an automatic gain control (AGC), a bandpass filter, and a demodulator. When it receives a 38kHz IR signal, it strips away the carrier frequency and outputs the raw data bits as a digital signal. Because it is "Active Low," the output pin stays HIGH when idle and pulses LOW when a signal is detected, making it directly compatible with the digital input pins of Arduino, ESP32, and Raspberry Pi.

Key Features

High Sensitivity: Capable of picking up remote signals from across a large room.
Built-in Filter: The black epoxy casing filters out visible light, reducing noise and false triggers.
Low Power Logic: Consumes very little current, making it ideal for battery-powered standby circuits.
Standard Frequency: 38kHz tuning ensures compatibility with almost all Sony, NEC, and RC5 remote protocols.
Robust PCM Frequency: Optimized for PCM (Pulse Code Modulation) to ensure reliable data transmission.

Technical Details

Pinout (Facing the "Bulge"): 1. GND: Ground. 2. VCC: 5V Power. 3. OUT: Signal Output.
Operating Temperature: -25°C to +85°C.
Frequency Tolerance: ± 2kHz.

Prototyping and Engineering Tips from Robogears

The Noise Filter Circuit: For maximum stability, especially when using long wires, we recommend adding a 100Ω resistor in series with the VCC pin and a 4.7µF electrolytic capacitor between the VCC and GND pins of the sensor. This "RC Filter" protects the sensitive preamplifier from power supply ripples.
Direct Sunlight Warning: While the TSOP1738 has an IR filter, direct sunlight contains a massive amount of infrared radiation that can "blind" the sensor. If your project is outdoors, place the sensor inside a small dark tube or a recessed enclosure to shield it from the sun.
Decoding Protocols: To read remote codes with an Arduino, use the IRremote library. Remember that the TSOP1738 outputs an inverted signal (Active Low). If you are using an oscilloscope, you will see the signal drop to 0V every time the IR LED on the remote blinks.

Package Includes

1 x TSOP1738 IR Receiver (Infrared Receiver)

Disclaimer

Ensure the pins are connected correctly before powering on; reversing VCC and GND can permanently damage the internal preamplifier. This sensor is tuned to 38kHz; while it may respond to 36kHz or 40kHz signals, the range and reliability will be significantly reduced.