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As I understand it, the quantity this product is purchased in refers to the number of LED chips. The LED chips are embedded on a tape, so the product received is a length of strip which contains the quantity of LED chips specified at purchase. Is anyone able to shed some light on the density of LED chips on the tape? How many LEDs are there per meter of this strip?
Forgive me if I am missing something obvious here, I am very new to this and any help would be very much appreciated. I have attempted to find the answer myself (datasheet, forums, etc), but I am still very unsure as to what the answer is.
(I believe) I have figured out how many chips I require, however I am not sure what length of tape this will come out to. It would be super helpful to know what length I will be working with.
Thank you for contacting DigiKey , per the data sheet on page 15 , 10 LEDs will be on a 40mm length pc of tape , the pitch of the carrier is 4 mm . A full reel is 4000 led so the fength of a full reel is 16000 mm plus the leader and trailer . on cut tape parts there is no leader and trailer .
@Craig_2048 is right on. Just so you know what to look for in the future, the specific info is on page 15 of the datasheet Craig provides above, and copied below:
The highlighted part specifies the spacing from the center of one part to the center of the next part on the tape, referred to as the pitch, “P1”. So, with a pitch of 4mm, you’ll get 250 LEDs per meter (1000mm / 4mm per LED = 250 LEDs).
Just to be clear, do understand that the LEDs on this tape are just floating in a plastic pocket in the tape, and not electrically connected to anything. They must be removed from the tape and soldered onto a circuit board. The tape is simply there to hold the LEDs in an orderly manner for special equipment to pick them out and place then onto a board for soldering.
If you are looking for LEDs already soldered down to a substrate and ready to be powered up, this is not what you are looking for. For an example of that, the SI-B8T502560WW is a 561mm linear strip which holds 96 “LM301H EVO” type horticultural LEDs plus 16 “LH351H” red LEDs soldered down to a metal clad board and has connectors for receiving power.
