TSOP 1838B Small - Miniature IR Receiver Module for Remote Control Applications

Premium infrared receiver sensor from The Engineer Store, Bengaluru. Compact form factor ideal for space-constrained designs. Fast shipping, 7-day warranty on manufacturing defects, and dedicated technical support.

Specifications

Parameter	Detail
Model	TSOP 1838B (Small Package)
Type	Miniature Infrared Receiver Module
Carrier Frequency	38 kHz
Operating Voltage	2.7V - 5.5V DC
Reception Distance	Up to 18 meters (typical)
Reception Angle	+/-45 degrees (half angle)
Output	Active low digital pulse
Pin Configuration	Pin 1: OUT, Pin 2: GND, Pin 3: VCC
Package	Small epoxy molded (compact form factor)
Wavelength Sensitivity	940 nm (peak)
Supply Current	~0.35 mA (typical)
Built-in Features	AGC, bandpass filter, demodulator, noise suppression
Compatibility	NEC, RC5, RC6, Sony SIRC, and other standard IR protocols
Operating Temperature	-25 degreesC to +85 degreesC
Origin	Original / Authentic
Warranty	7-day warranty on manufacturing defects
Support	Email & WhatsApp 24/7

Product Description

The TSOP 1838B Small is a miniaturized infrared receiver module specifically designed to detect 38 kHz modulated IR signals from standard remote controls. This compact variant of the popular TSOP1838 family integrates a photodetector, automatic gain control (AGC), bandpass filter, and demodulator into a single tiny epoxy package, making it the go-to choice when board space is at a premium.

The module receives infrared light pulses from a remote transmitter, filters out ambient light interference, demodulates the 38 kHz carrier, and outputs a clean digital signal that can be directly read by any microcontroller. The active-low output goes LOW when a valid IR signal is detected and remains HIGH during idle periods.

Its wide operating voltage range of 2.7V to 5.5V ensures seamless compatibility with both 3.3V and 5V logic systems, including Arduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, and 8051 microcontrollers. The small form factor makes it especially suitable for compact remote-controlled gadgets, wearable electronics, and miniaturized embedded systems.

Key Technical Highlights

• 38 kHz Optimized: Tuned precisely for the most widely used IR carrier frequency in consumer electronics
• Integrated Signal Processing: AGC automatically adjusts sensitivity based on signal strength for reliable reception across varying distances
• Superior Noise Immunity: Built-in bandpass filtering rejects ambient light from sunlight, fluorescent lamps, and other IR sources
• Minimal External Components: Only requires a single decoupling capacitor (100 nF) and optional series resistor (100Ohm) on VCC for stable operation
• TTL/CMOS Compatible Output: Direct interface to microcontroller GPIO pins without level shifting
• Burst Length Tolerance: Accepts signal bursts from 10 cycles/burst minimum, compatible with virtually all consumer IR protocols

Why Choose the TSOP 1838B Small?

• 100% authentic sourced directly from authorized distributors - authentication verified
• Ultra-compact package - significantly smaller than standard TSOP1838, perfect for tight PCB layouts and miniature enclosures
• Universal IR compatibility - works with virtually every TV remote, AC remote, and custom IR transmitter operating at 38 kHz
• Plug-and-play with Arduino - extensive library support (IRremote, IRLib2) for instant prototyping
• Reliable long-range reception - detects signals up to 18 meters with proper transmitter alignment
• Low power consumption - draws only 0.35 mA, ideal for battery-powered and solar-powered projects
• Wide voltage tolerance - operates reliably from 2.7V to 5.5V without external regulators
• Industrial temperature range - performs consistently from -25 degreesC to +85 degreesC
• 1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse to most locations across India
• Expert technical support included with every purchase

How It Works

1. IR Signal Transmission: A remote control emits infrared light pulses modulated at 38 kHz, encoding data using protocols like NEC, RC5, or Sony SIRC
2. Optical Reception: The TSOP 1838B's internal photodiode captures the incoming IR light
3. Bandpass Filtering: The integrated filter passes only 38 kHz signals, rejecting ambient light and other frequency interference
4. AGC Processing: Automatic gain control normalizes signal amplitude regardless of distance or transmitter power
5. Demodulation: The carrier frequency is stripped away, leaving the raw data envelope
6. Digital Output: A clean active-low digital signal appears on the OUT pin, ready for microcontroller decoding

Wiring Guide

Pin Configuration (Front View - Dome Facing You)

Pin	Name	Function	Wire Color (Typical)
1 (Left)	OUT	Demodulated digital output (active low)	Yellow / White
2 (Center)	GND	Ground	Black
3 (Right)	VCC	Power supply (2.7V-5.5V)	Red

Arduino Uno Connection

TSOP 1838B Pin	Arduino Uno Pin
OUT (Pin 1)	Digital Pin 11 (or any digital input)
GND (Pin 2)	GND
VCC (Pin 3)	5V

Recommended: Place a 100 nF ceramic capacitor between VCC and GND as close to the sensor as possible. Optionally add a 100Ohm resistor in series with VCC for additional power supply noise filtering. ###

Frequently Asked Questions

When will I receive my order?

Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.

Is technical support available?

Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.

What is your return policy?

7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.

Buy TSOP 1838B small Online in India

Purchase the TSOP 1838B small online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on TSOP 1838B small with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.

Looking to buy TSOP 1838B small at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.