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 rating||Body length (l)||Body diameter (d)|
|1/8 (0.125)||3.0 ± 0.3||1.8 ± 0.3|
|1/4 (0.25)||6.5 ± 0.5||2.5 ± 0.3|
|1/2 (0.5)||8.5 ± 0.5||3.2 ± 0.3|