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Led Circuit Board Free Design PCB OEM Metal Core Sheet For Street Light
What Are LED PCBs?
Light-emitting diodes, more commonly called LEDs, are an
increasingly popular technology for lighting across various
industries.
LEDs are a type of solid-state lighting that converts electricity
into light using a semiconductor.
Compared to traditional light bulbs, they reduce energy use by as
much as 80% and last up to 25 times longer.
They also offer other advantages, such as their small size and
environmental friendliness.
Printed circuit boards are a technology that plays a valuable role
in supporting LEDs.
These are thin boards made of fiberglass, metals or other materials
that electrically connect electronic components.
These boards, often called PCBs, are essential to many LED
applications.
They may physically support the LEDs and transfer heat away from
the bulbs to enhance their performance and prevent them from
becoming damaged.
LED printed circuit boards have numerous characteristics that help
them perform ideally in their applications.
In this article, we’ll look at some of these characteristics, some
of the applications of LED PCBs and the benefits of using these
technologies.
Layer | 1-24 |
Material | Aluminum core (Domestic 1060), Copper core, FR4 covering |
Thickness (Finished Board) | 0.8 mm-5.0 mm |
Max. Board Size | 610 mm*610 mm |
Copper weight (finished) | 0.5 oz-4.0 oz |
Surface Finish | Hot air solder leveling (HASL) Lead-free HASL: RoHS compliant Electroless nickel/immersion gold (ENIG): RoHS compliant |
Min. Tracing/Spacing | 4 mil/4 mil |
Min. diameter of drill | 8mil |
Min. Annular ring | 4mil |
Soldermask Color | Green, red, black, yellow, white, blue, green matt, black matt |
Silkscreen Legend Color | White, Black, Yellow |
Countersink holes | Yes |
Screw holes | Yes |
layer/m² | S<1㎡ | S<3㎡ | S<6㎡ | S<10㎡ | S<13㎡ | S<16㎡ | S<20㎡ | S<30㎡ | S<40㎡ | S<50㎡ | S<65㎡ | S<85㎡ | S<100㎡ |
1L | 4wds | 6wds | 7wds | 7wds | 9wds | 9wds | 10wds | 10wds | 10wds | 12wds | 14wds | 15wds | 16wds |
2L | 4wds | 6wds | 9wds | 9wds | 11wds | 12wds | 13wds | 13wds | 15wds | 15wds | 15wds | 15wds | 18wds |
4L | 6wds | 8wds | 12wds | 12wds | 14wds | 14wds | 14wds | 14wds | 15wds | 20wds | 25wds | 25wds | 28wds |
6L | 7wds | 9wds | 13wds | 13wds | 17wds | 18wds | 20wds | 22wds | 24wds | 25wds | 26wds | 28wds | 30wds |
8L | 9wds | 12wds | 15wds | 18wds | 20wds | 20wds | 22wds | 24wds | 26wds | 27wds | 28wds | 30wds | 30wds |
10L | 10wds | 13wds | 17wds | 18wds | 20wds | 20wds | 22wds | 24wds | 26wds | 27wds | 28wds | 30wds | 30wds |
12L | 10wds | 15wds | 17wds | 18wds | 20wds | 20wds | 22wds | 24wds | 26wds | 27wds | 28wds | 30wds | 30wds |
14L | 10wds | 16wds | 17wds | 18wds | 20wds | 20wds | 22wds | 24wds | 26wds | 27wds | 28wds | 30wds | 30wds |
16L | 10wds | 16wds | 17wds | 18wds | 20wds | 20wds | 22wds | 24wds | 26wds | 27wds | 28wds | 30wds | 30wds |
FQA
1. The advantages of LED PCB
With the electronic products is more and more smaller and thinner,
making it popular to use LED PCB, and there are various advantages
with using LED PCB as follows:
There are two main reasons which make the LED PCB be popular in addition to increasing the light output of the fixture with integrating multiple LED components.
2. SMD LEDs in your PCB
There are many devices including LEDs on a PCB using surface
mounted components.
If the wires are quite thin, through hole components can bend
slightly so that it looks cheap from the outside.
If making it right to solder the SMD LED, it will be rigid on the
board. What’s more, it can also place the SMD LED behind a screen,
and cheaper LED that use a bulb will stick out through the
packaging.
So it can place the SMD LED behind a small screen in your packaging
to be cleaner for your device.
As you know, many PCBs that contain LEDs are fabricated with
multilayer FR-4 substrates, so you need to have a pattern of
closely-spaced filled or plated through vias under each component
so that it can transmit heat, as well as get to your power and
ground layers.
If your LEDs have a small footprint and are surfaced mounted, it
can use our vias.
Probably there will be a weak solder joint or even tombstoning
because it doesn’t fill or plate over the vias and then solder can
wick into the vias during assembly, so the reason why it’s better
to just use SMD LEDs on an LED lighting array is that the problem
with wicking.
A single LED with decent power output will not lead to damaging to
your board because of undue thermal.
However, if you are going to have a system for lighting
applications, it will need to suffer from a massive heat for the
board that supports your LEDs, and make it hard to cool with
traditional methods for the boards.
Because the individual LEDs are too small, you can’t really attach
a heatsink anywhere, and a heatsink will block the emitted light
anyways.
Because there is a great demand on thermal, the boards with a metal
core are usually used in LED lighting applications due to their
ability to dissipate a great deal of heat.
In general, aluminum is used for LED lighting applications as the
metal core in PCB.
What’s more, aluminum is the most metal used as the core among all
the possible metal core PCBs.
As well as copper and iron are used for metal core PCBs.