See the Invisible: How a 5mm Through-Hole IR LED Powers Everyday Smart Devices
Infrared light is invisible to the human eye, yet it quietly powers some of the smartest products around us. Behind non-contact thermometers, TV remote controls, night-vision cameras and automatic sensors sits a tiny, hard-working component — the 5mm IR LED chip. This 5mm through-hole infrared emitter is built to deliver stable 940nm and 850nm output, making it a reliable choice for a wide range of sensing and imaging applications.
What Makes This 5mm IR Emitter Stand Out
- Dual wavelength options — 940nm for remote controls and 850nm for night-vision / camera illumination.
- High radiant intensity — up to 20 mW/Sr at 20mA for dependable signal reach.
- Low forward voltage — just 1.4–1.7V, keeping power consumption low.
- Wide 120° viewing angle — broad, even infrared coverage.
- Ultra-long lifespan — 50,000 hours, with 99.99% pure gold wire bonding.
- Pb-free & RoHS/Reach compliant — radiationless and environmentally friendly.
Technical Parameters (5mm Dip IR LED, Ta = 25°C)
| Parameter |
Symbol |
Min |
Typ |
Max |
Unit |
| Wavelength | λd | — | 940 | — | nm |
| Radiant Intensity | Ee | — | 20 | — | mW/Sr |
| Forward Voltage | VF | 1.4 | — | 1.7 | V |
| Forward Current | IF | — | 20 | — | mA |
| Viewing Angle | 2θ1/2 | — | 120 | — | deg |
| Reverse Current | IR | — | — | 5 | µA |
| Operating Temperature | -40°C ~ +85°C | Storage Temperature | -40°C ~ +100°C |
| Package Size | 5mm (through-hole / DIP) | Packing | 1000 pcs / bag |
| Chip Brand | San'an / Epistar | Lifespan | 50,000 hours |
One Emitter, Many Application Scenarios
- Non-contact infrared thermometers — a precise 940nm emitter for fast, hygienic temperature readings.
- Remote controls — the classic 940nm signal source for TVs, set-top boxes and air conditioners.
- Night-vision & CCTV cameras — 850nm illumination that keeps security footage clear in darkness.
- Optoelectronic switches & position sensors — reliable beam interruption for automation and safety systems.
- Counters, sorters & readers — dependable sensing in card readers, tape and disk drive systems.
A Full Infrared Wavelength Family
Beyond the standard 940nm, this platform covers a broad infrared spectrum — 730nm, 740nm, 780nm, 800nm, 810nm, 830nm, 850nm, 880nm, 890nm, 940nm, 980nm, 990nm, 1000nm, 1050nm, 1100nm, 1550nm and even 2000nm — so you can source almost any IR wavelength from a single trusted supplier.
Why Partner with Dongguan Lanjin Optoelectronics Co., Ltd.?
Behind every component is 东莞市蓝晋光电有限公司 (Dongguan Lanjin Optoelectronics Co., Ltd.), established in 2005 as a professional manufacturer of LEDs, digital displays, SMD LEDs, through-hole LEDs and LED PCB assembly. Covering a 2,500 m² plant with a purification, constant-temperature anti-static workshop, the company has passed ISO9001:2015, holds 2 national invention patents and 12 utility-model patents, and complies with EU RoHS. With 18 years of R&D and OEM/ODM experience, Lanjin delivers high-temperature-resistance, long-life LEDs — LED light the world, Lanjin lights your life!
FAQ
Are you a factory or a trading company? We are a professional LED manufacturer with 18 years in China, offering one-stop OEM & ODM service worldwide.
Can I get samples? Yes — we welcome sample orders to test and evaluate our LED quality.
Is there a discount for bulk orders? Yes, wholesale pricing is available for bulk or customized orders.
What is the lead time? Typically 10–15 working days; standard samples can ship in about 3 days.
Ready to Source Your 5mm IR LED?
From non-contact thermometers to night-vision cameras, the 5mm IR LED chip from Dongguan Lanjin Optoelectronics Co., Ltd. delivers the wavelength, radiant intensity and reliability your next design needs. Contact us today for samples and wholesale pricing.
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