Description Our short leg through hole LED diode series provides two mainstream sizes: F3 (3mm) and F5 (5mm) to satisfy diverse electronic assembly demands. Each dip LED bead supports 5 universal light colors, running at standard 20mA rated current to deliver long-lasting stable brightness without quick burnout. This multi-color circuit indicator light diode adopts transparent bullet epoxy lens to create uniform light output. The pre-trimmed short metal pins reduce extra cutting work during PCB soldering, saving assembly space for compact DIY projects and industrial control panels. As universal straight plug LED components, they perfectly match Arduino development boards, sensor modules, toy models and mini instrument signal lamps. Universal Electrical Parameters for All Sizes (F3 & F5 share same electrical specs) Red / Yellow LED: Forward Voltage 2.0–2.2V, Rated Current 20mA Blue / White / Emerald Green LED: Forward Voltage 3.0–3.2V, Rated Current 20mA Product Advantages Dual-size F3/F5 Short leg through hole LED diode, one product covers small & medium indicator needs Short pin design prevents circuit short-circuit on dense PCBs 5 full color options for power, warning, running status marking RoHS-compliant chips, stable luminous performance after thousands of working hours Wide General Usage Scenarios This universal short leg through hole LED diode set fits Arduino electronic DIY projects, robot decorative lighting, household equipment panel indicators, school circuit experimental kits, RC model signal lights and small toy decorative lamps. Electronic students, hobbyists and electrical engineers all widely select these 3mm/5mm dip LED beads for balanced cost and stable performance. Q&A 1 Q: Can both F3 and F5 short leg through hole LED diodes be directly used on 5V Arduino boards? A: Both F3 and F5 variants can light up on 5V Arduino boards, but you need to add a 220Ω series current-limiting resistor to lock current at standard 20mA. Different colors carry different forward voltage values listed in our universal spec sheet. Q&A 2 (Short Pin & Size Selection Concern) Q: What’s the difference between F3 and F5 dip LED beads, and will short pins affect PCB welding? A: F3 (3mm) is for tiny compact circuit panels while F5 (5mm) offers brighter light for visible large equipment indicators. Pre-cut short pins retain enough length for standard through-hole soldering, and avoid redundant pin short-circuit issues on crowded boards. Q&A 3 (Brightness & Scene Matching Concern) Q: Are all multi-color circuit indicator light diodes bright enough for indoor instrument panel signals? A: Yes, every straight plug LED in F3 and F5 sizes uses high-luminance chips, with clear distinguishable red, yellow, green, blue and white light under regular indoor ambient light, perfect for marking power, fault and operating status on control panels.
