Imagine an LED chip that can be Red today and switch to Green tomorrow — all from a single surface-mount package. This isn't science fiction. It's the everyday reality of Lanjin's 3228 Bi-Color SMD LED technology.
Engineered by Dongguan Lanjin Optoelectronics Co., Ltd., the 3228 Bi-Color SMD LED revolutionizes indicator design by packing two independent LED chips into a compact 3.2 * 2.8 * 1.1mm surface-mount package. By simply reversing the current direction or switching between cathode/common configurations, engineers can toggle between two distinct colors — without increasing PCB footprint.
🌌 Popular Dual-Color Combinations:
| Parameter | Red | Green | Blue | White |
|---|---|---|---|---|
| Wavelength | 620–635nm | 515–525nm | 460–472nm | 7500–10000K |
| Luminous Intensity | 100–300 mcd | 600–1,200 mcd | 50–150 mcd | 800–1,200 mcd |
| Forward Voltage | 1.8–2.4V | 2.8–3.4V | 2.8–3.4V | 2.8–3.4V |
| Packaging | 3.2 * 2.8 * 1.1mm | 120° Viewing Angle | 20mA Standard Current | |||
Green = Normal Operation → Red = Fault/Overload. Every power supply unit on your desk needs a clear status signal, and Lanjin's bi-color LEDs provide both states in zero extra PCB space. Battery chargers, UPS systems, DC-DC converters — they all benefit from this elegant dual-signal approach.
Routers, switches, and base stations communicate volumes through blinking lights. LAN link active? Green. Collision detected? Red. Data transmission? Rapid green pulse. The ability to show two distinct network states through one LED package simplifies panel layouts and reduces BOM costs for telecom equipment manufacturers worldwide.
In healthcare environments, instant visual recognition is critical. Heart monitor status indicators, infusion pump readiness signals, ventilator alarm conditions — every millisecond counts. Bi-color LEDs with their crisp red/green contrast reduce cognitive load for medical staff reading multiple monitors simultaneously. The high brightness output ensures visibility even under bright hospital lighting.
Modern vehicles cram more information into fewer display spaces. Fuel tank near empty? Amber light. Engine overheating? Red warning. Lane assist engaged? Green confirmation. Compact automotive-grade bi-color indicators maximize dashboard real estate efficiency while meeting stringent temperature (-40°C to +85°C) and vibration standards required in automotive applications.
Zigbee/Wi-Fi mesh network status displayed at a glance: blue = connecting, green = online, red = disconnected. Smart home hubs need reliable yet compact connectivity indicators, and bi-color SMD LEDs deliver exactly that — no flashing sequence tricks needed, just solid, unmistakable color feedback.
Industrial control panels, MIDI keyboards, and professional audio mixers increasingly use bi-color backlighting to convey multi-state information directly through each key. Green-lit keys = ready/active, Red-lit keys = disabled/error. This spatial coding dramatically improves operator workflow speed and reduces input errors during critical operations.
Founded in 2005, Dongguan Lanjin Optoelectronics Co., Ltd. has established itself as a trusted global supplier of LED components, operating from a 2,500-square-meter modern facility equipped with purification workshops featuring constant temperature, humidity control, and ESD protection.
With 18+ years of expertise, Lanjin holds 2 national invention patents and 12 utility model patents. ISO9001:2015 certified. All products comply with EU RoHS environmental directives. Advanced manufacturing technology absorbed from Japan, Korea, and Western Europe powers continuous innovation.
"LED light the world, Lanjin lights your life!"
Dongguan Lanjin Optoelectronics provides free samples, technical datasheets, and OEM/ODM customization. Our engineering team responds within one hour.
Người liên hệ: Miss. Ava Huang
Tel: +86 18819512052
Fax: 86-0769-89616935
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