--- product_id: 35786085 title: "50 Pairs 5mm 940nm Infrared Diode LED Emission and IR Receiver" brand: "xingyheng" price: "562355₫" currency: VND in_stock: true reviews_count: 13 url: https://www.desertcart.vn/products/35786085-50-pairs-5mm-940nm-infrared-diode-led-emission-and-ir store_origin: VN region: Vietnam --- # Wavelength: 940nm Frequency: 38KHz Voltage: 2.7~5.5V 50 Pairs 5mm 940nm Infrared Diode LED Emission and IR Receiver **Brand:** xingyheng **Price:** 562355₫ **Availability:** ✅ In Stock ## Summary > 💡 Light Up Your Innovations with Infrared Magic! ## Quick Answers - **What is this?** 50 Pairs 5mm 940nm Infrared Diode LED Emission and IR Receiver by xingyheng - **How much does it cost?** 562355₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/35786085-50-pairs-5mm-940nm-infrared-diode-led-emission-and-ir) ## Best For - xingyheng enthusiasts ## Why This Product - Trusted xingyheng brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Design:** 5mm bulb size fits seamlessly into any project. - • **Reliable Quality:** 50 pairs ensure you have enough for all your innovative ideas. - • **Long-Range Performance:** Achieve an impressive operating distance of 18-20m. - • **Versatile Applications:** Perfect for remote controls, security systems, and more. - • **Illuminate Your Projects:** Transform your DIY electronics with precision infrared technology. ## Overview This product includes 50 pairs of 5mm 940nm infrared diode LEDs and IR receivers, designed for a voltage range of 2.7 to 5.5V and a frequency of 38KHz, making it ideal for various electronic applications with a remarkable operating distance of 18-20 meters. ## Description XINGYHENG 50 Pairs 5mm 940nm Infrared Diode Emission and IR Receiver ## Features - 1. Voltage : 2.7~5.5V - 2. Frequence : 38KHz - 3. Peak wavelength (nm): 940nm - 4. Bulb Size diameter : 5mm - 5. Operate Distance : 18~20m ## Images ![50 Pairs 5mm 940nm Infrared Diode LED Emission and IR Receiver - Image 1](https://m.media-amazon.com/images/I/61txDL7smkL.jpg) ## Questions & Answers **Q: Why are there two colors of leds? which one is the led and which one is the ir receiver?** A: The black is the receiver and the clear is the admitted. Unlike LED's, the short arm of the receiver is attached to the cathode (positive) side of the circuit. **Q: All the clear ir led's are emitting white light. are these supposed to generate visible light?** A: I have noticed any visible light from the clear bulbs. I have never looked in the dark at the output. **Q: Is there a datasheet for these two parts?** A: No. **Q: Is the receiver a photo diode, photo transistor or photo resistor? It sounds like a photo transistor, but just learning distinction.** A: Fairly certain (90%) that it is a photo diode. If ur multi-meter has a diode function, u should be able to see a forward voltage drop of around .7v when forward biased. Hope this helps ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Worked as expected *by S***C on Reviewed in the United States on January 3, 2021* Using these as sensors with my model railroad to determine when a train is passing a specific point. These are used to trigger electronic circuits to control actions like crossing signals and gates. The transmitter (clear) and receiver (black) work best when placed on opposite sides of the track. They can also be placed under the tracks pointing up, and angled slightly toward each other. When the train breaks the beam, the circuit turns on a small small relay that controls the signals. Can also be used to control lights on a control panel to indicate when hidden tracks are occupied. Only complaint - on the photo sensor (black) it wasn’t clear which side is cathode / anode. After experimentation, it appears to be the opposite of standard protocol for LEDs. In other words, long leg is connectedto minus; short leg to + ### ⭐⭐⭐⭐ 4.0 out of 5 stars Could for Experiments *by T***R on Reviewed in the United States on February 22, 2023* These worked perfect for what I wanted. Less than 5 stars because the data said I could expect 18 to 20 meters range, which is extremely optimistic. I would say 18 to 20 cm is more like it. Hint: plan to put the spec'ed 100 ma thru the transmitter to get any kind of range. Also, the receiver may have a 45 degree FOV, but the transmitter needs to be pointed nearly directly at it. And to correct an answer to a question, the receiver is a photo diode, and the longer lead is the anode on both - but the receiver needs to be reverse biased. I used 41 ohms between the LED and 5V, and 620 ohms on the receiver. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars One little trick. *by C***N on Reviewed in the United States on May 14, 2019* This product work as I wished to control a linear actuator. The one trick was that the I.R. receiver's (the black component) anode is the short lead. This is the opposite from the normal configuration of a diode. The reason is that the receiver is not a diode, but a transistor. ## Frequently Bought Together - BGTXINGI 50 pairs 5mm 940nm Infrared Diode LED Emission and IR Receiver - AUKENIEN BJT Transistor Assortment Kit 10 Values 250pcs NPN PNP Power General Transistors 2N2222 2N2907 2N3904 2N3906 A1015 BC327 BC337 C1815 S8050 S8550 TO-92 - AUKENIEN Electrolytic Capacitor Kit 24 Values 670pcs Aluminum Industrial Electrical Radial Capacitors Assortment Set from 0.1uF to 1000uF 10V 16V 25V 50V Capacitadores --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/35786085-50-pairs-5mm-940nm-infrared-diode-led-emission-and-ir](https://www.desertcart.vn/products/35786085-50-pairs-5mm-940nm-infrared-diode-led-emission-and-ir) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-04*