[SOLVED] 7 Segment Display sizes

[crazyramila]

Hi,
i have a small problem about seven segment display sizes.
can anyone tell me the sizes of seven segment displays available in the market(0.5", 1", 2".....).

and also i need to know about the current which is required to light all the pins with normal brightness(1.5" = to light up all pins 25mA. like that)

 

[papunblg]

14.2 mm (0.56 inch) standard size. Bigger sizes are also available. Peak forward current varies between 60 - 160mA for HDSP series.Check the datasheet for your type.

---------- Post added at 16:01 ---------- Previous post was at 15:57 ----------

12inch SSD are also avainable https://www.evilmadscientist.com/article.php/sevensegment

 

[ark5230]

Large size custom made segments for seven segment displays are also available for traffic signals and long distance viewing applications. Try a google search.

 

[Pjdd]

Small 7-segment displays of about 0.5" height (like the one mentioned by papunblg) have a single LED in each segment and the maximum current rating is usually around 20mA per segment. Therefore the maximum when all segments are lit up is about 140mA. However, the actual current is controlled by external circuits. How much current is required depends on the application. For example, for indoor viewing in subdued lighting, 1 or 2mA per segment may be enough. Some viewing conditions may make it desireable to use the full 20mA.

Larger digits may use 2 or more LEDs in series in each segment, still with a maximum current rating of 20mA but at a higher voltage. Still larger displays may have a combination of series and parallel arrangements in each segment - e.g. 4 LEDs in series and 3 such strings in parallel, a total of 12 LEDs in each segment. Some have a smaller number of higher-powered LEDs.