Portable lighting designers keep asking the same question: how do you fit a bright white work beam and a red night-vision beam into one 3.5×3.5mm footprint? The answer is the 2W 3535 SMD LED dome lens bi-color red & white from BOSMFC — a two-die package driven at 350mA that delivers 100–140lm of white light or 70–90lm of 620–630nm red, selected by simply reversing the polarity of the drive channel.
Traditional dual-mode lamps need two separate emitters, two optical paths and twice the board space. A bi-color 3535 with an integrated dome lens collapses that into a single reflow step:
Red and white is only the most popular pairing. The same 3535 dome-lens body is binned in four combinations, so a product family can share one PCB, one optic and one gasket set.
| Pairing | Wavelength / CCT | Flux (lm) | Forward Voltage | Typical Use |
|---|---|---|---|---|
| Red + White | 620–630nm / 6500–10000K | 70–90 / 100–140 | 1.8–2.4V / 2.8–3.6V | Headlamp, work light |
| Red + Green | 620–635nm / 515–525nm | 70–90 / 90–120 | 1.8–2.4V / 2.8–3.4V | Charge & status |
| Red + Yellow | 620–635nm / 584–596nm | 70–90 / 60–80 | 1.8–2.4V | Warning beacons |
| Red + Blue | 620–635nm / 460–470nm | 70–90 / 20–40 | 1.8–2.4V / 2.8–3.4V | Security & signal |
| Application | Why this part |
|---|---|
| Headlamps & miner's lamps | White for the working beam, red for dark-adaptation and emergency signalling — one lamp head, one cable, one switch. |
| Portable work & inspection lights | 2W output and a 30° spot suit hand-held lamps, engine-bay lights and maintenance kits. |
| Camping & outdoor lanterns | Red mode keeps tents and campsites glare-free while saving battery capacity. |
| Auto & motorcycle auxiliary lamps | White driving light plus red marker or tail function in a single 3.5×3.5mm site. |
| Marine, bike & safety lighting | Red night markers and bright white notice lights from one sealed, vibration-tolerant package. |
| Parameter | Value |
|---|---|
| Package size | 3.5 × 3.5 × 3.9mm, SMD reflow |
| Drive current | 350mA constant current, 2W per die pair |
| Viewing angle | 30° dome lens (tight spot, high centre intensity) |
| Life & temperature | 50,000 hours; heat dissipation via ceramic substrate and thermal pad |
| Packing | 2,000pcs per reel, anti-static bag and export carton |
Design tip: keep the thermal pad soldered to at least 100mm² of copper and drive both dies with a two-channel constant-current IC so the white and red modes can be switched without a mechanical shutter.
The 3535 bi-color dome lens is manufactured by Dongguan Lanjin Optoelectronics Co., Ltd. (东莞市蓝晋光电有限公司), an LED factory established in 2005 with a 2,500m² constant-temperature, anti-static workshop in Dongguan, China. The company is ISO9001:2015 certified, holds 2 national invention patents and 12 utility-model patents, and ships every part RoHS and Reach compliant. Monthly capacity reaches 500KK units, with MOQ from 2,000pcs, 5–15 day lead times and a 3-year warranty; the same lines also run 3030, 2835 and 5050 dome-lens platforms plus full through-hole, SMD and LED PCB assembly services for buyers consolidating their lighting BOM.
For headlamp, work-light or automotive buyers who need one part covering two lighting modes, Dongguan Lanjin Optoelectronics Co., Ltd. can supply free samples of the 2W 3535 bi-color dome lens and confirm lumen bins within one working day.
Osoba kontaktowa: Miss. Ava Huang
Tel: +86 18819512052
Faks: 86-0769-89616935
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