Infrared light is invisible to the human eye, yet it guards our homes, reads our cards, counts our products and even cares for our skin. Behind these quiet miracles stands a family of precision components, and at the heart of optical sensing sits a classic: the flat top IR LED chip. Dongguan Lanjin Optoelectronics Co., Ltd., one of the best China through hole LED manufacturers since 2005, builds this component to exacting standards under the BOSMFC brand.
The spotlight model is the Flat Top 5mm IR LED Chip 940nm 850nm Wavelength For Smoke Sensor, a 5mm DIP through-hole infrared emitting diode with a flat-top lens. Its flat optical surface radiates infrared evenly into the detection chamber of photoelectric smoke alarms, while the proven through-hole leads anchor firmly to the PCB for a mechanical connection that outlasts the product itself. This is the best flat top IR LED chip choice for engineers who demand repeatable, stable emission from every batch.
| Parameter | Specification |
|---|---|
| Package | 5mm DIP, LED through hole, flat-top lens |
| Wavelength | 940nm (typ.), also 850nm |
| Radiant Intensity | 20 mW/sr @ 20mA |
| Forward Voltage | 1.4 - 1.7V |
| Operating Temperature | -40°C to +85°C |
| Lifespan | 50,000 hours |
| Features | Well-known chip material, high flux, efficient heat dissipation, strong anti-static ability |
| Certification / Packing | RoHS / 1000 pcs per bag |
Unlike round or bullet lenses that concentrate light into a narrow cone, the flat-top design emits a wider, more uniform beam — ideal for filling an optical chamber or illuminating a detection zone evenly. Combined with the reliability of a through-hole IR LED, this makes the chip exceptionally easy to align in sensor modules and optical switches.
The primary home of this chip: photoelectric smoke alarms. The 940nm flat top IR LED chip pulses into the sensing chamber, and when smoke particles scatter the beam, the alarm responds. Its 50,000-hour life and stable output keep life-safety devices vigilant for a decade or more.
From conveyor-belt counters to paper and card readers, through-hole IR LEDs form the light barriers of industrial automation. The flat-top beam simplifies optical alignment, while the rugged DIP package tolerates factory-floor vibration.
850nm and 940nm are the workhorses of IR remote control and short-range data links. This flat top IR LED chip emits fast, clean pulses (nanosecond response) that receivers decode reliably across a room.
Infrared thermometers, pulse oximeters and blood analyzers rely on precision IR emitters. Lanjin’s 5mm through-hole IR LED family covers 730nm to 2000nm, giving medical OEMs one trusted China through hole LED manufacturer for the whole wavelength range.
Near-infrared at 850nm and 940nm penetrates skin tissue, which is why the IR LED chip for beauty has become a core component of LED facial masks, skin-rejuvenation wands and hair-growth caps. Choosing the right IR LED chip for beauty devices determines both treatment efficacy and user safety. Lanjin supplies dedicated beauty-grade IR LED chips — from dome-lens 3528 emitters to combined 660nm + 850nm therapy chips — all manufactured in the same ISO9001 certified, anti-static workshops as this flat-top model.
Dongguan Lanjin Optoelectronics Co., Ltd. (东莞市蓝晋光电有限公司) is a professional manufacturer of light emitting diodes, SMD LEDs, through-hole LEDs, LED digital displays and LED PCB assembly. Whether you need the best flat top IR LED chip for a smoke sensor, an IR LED chip for beauty therapy, or a complete custom emitter solution, our engineers are ready to support your project from sample to volume production.
LED lights the world, Lanjin lights your life! Request a quotation or free samples today.
コンタクトパーソン: Miss. Ava Huang
電話番号: +86 18819512052
ファックス: 86-0769-89616935
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