28th August 2018

wikipedia
9

What are SMD chips?

An SMD LED Module (surface-mount device light-emitting diode module) is a type of LED module that uses surface-mount technology (SMT) to mount LED chips on printed circuit boards (PCB). It is a self-contained surface-mount LED device designed either to function on its own or to plug into a compatible unit.

Subsequently, one may also ask, what does MELF resistor mean?

Metal electrode leadless face (MELF) is a type of leadless cylindrical electronic surface mount device that is metallized at its ends. MELF devices are usually diodes and resistors. The EN 140401-803 and DO-213 standards describe multiple MELF components.

How surface mount resistors are made?

SMT resistors or SMD resistors are rectangular in shape and as a result they are often known as chip resistors. The resistor is made by taking a ceramic substrate and then depositing a thin film of resistive material - typically metal oxide or a metal film.

What size is a 1 4 watt resistor?

Axial resistor size
Power ratingBody length (l)Body diameter (d)
Wattmmmm
1/8 (0.125)3.0 ± 0.31.8 ± 0.3
1/4 (0.25)6.5 ± 0.52.5 ± 0.3
1/2 (0.5)8.5 ± 0.53.2 ± 0.3
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