What does “3030” tell me?
It identifies a package size class, not a universal electrical or optical rating. Two 3030 LEDs can differ in emitter count, lens profile, pad pattern, forward voltage and output. Begin with the intended light and circuit function, then verify the chosen model’s drawing and test data before treating it as a replacement part.
What luminous efficacy should I expect?
There is no responsible single lm/W value for every 3030 LED. For a white-light part, divide measured luminous flux by electrical input power under stated current and temperature conditions, then compare like CCT and color-quality bins. A near-infrared part is evaluated with radiant output, usually in milliwatts, so a visible-light lm/W comparison does not describe its purpose. Request the figures for the actual model and operating point.
What belongs in a 3030 datasheet?
A useful part-specific sheet identifies the mechanical outline and pads, polarity or pinout, forward voltage and current, optical output with units and test conditions, wavelength or CCT bins, viewing angle, thermal limits and applicable soldering guidance. Multi-emitter parts need channel-level data. Leienda’s single-color, dual-chip, RGB and RGBW configurations should be reviewed by the corresponding part details rather than one family-wide number.
How does 3030 compare with 5050?
The package codes indicate different nominal footprint classes, but neither code sets power output by itself. A larger package may offer different emitter and circuit layouts; an individual device’s usable output still depends on its die design, drive current, optics and thermal path. Leienda’s 3030 and 5050 ranges should be compared using identified models when board space, channel count or optical output drives the decision.
How should I drive several 3030 LEDs in series?
Use a driver suited to the target current, and check that its voltage range covers the sum of the selected LEDs’ forward voltages with appropriate design margin. LEDs in one series string must suit the same current. For dual-emitter, RGB or RGBW designs, first inspect the actual pinout and channel connections; separate channels may need separate current control. Confirm the board’s thermal conditions at the intended operating point.