help finding a bridge recitifer

[spanker1]

Hi,
I am fairly new to the electronics world. I just got an internship with an LED company. As a first project my boss wanna run some LED's with an Iout of .5A to 1A using a stepdown transformer of Vin 12VAC. He told me to look into different bridge rectifiers which are SMD. I looked up the electronics website and some of these electrical terms are foreign to me. like Vrrm, If, Iav, Ir, Vdc etc.
I would really appreciate if you could shed some light on decyphering some of these terms so that i could find the right bridge for this project

Thanks much

 

[jiripolivka]

A rectifier block you need is a quad of rectifier diodes. For your parameters, 12 V AC and up to 1 A, you can use any available diodes like 1N4001...6 (the last digit determines the max.reverse voltage, 100 to 600 V).
Such diodes can carry 1 A or more.
To supply LED circuits, other parameters like you indicated are almost irrelevant as I assume your input will be a 120V AC to 12 V AC transformer (you can find a wall plug-in directly offering 12 V, 1 A regulated for a low cost).
Find a data sheet on any commercial diode bridge and the Vrrmax is the max reverse peak voltage, If is diode max forward current, I av is the average DC current for a given dissipated power (diodes get warm due to a finite voltage drop for the forward current). Ir is the reverse current at a maximum reverse voltage (usually neglectable below it, a microampere or so). Vdc is the output DC voltage when the load is preceded by a typical RC or LC filter to reduce ripple.

Find a basic electronics textbook and read about rectifiers. They are simple but they may grow quite complex under special conditions.

 

[spanker1]

A rectifier block you need is a quad of rectifier diodes. For your parameters, 12 V AC and up to 1 A, you can use any available diodes like 1N4001...6 (the last digit determines the max.reverse voltage, 100 to 600 V).
Such diodes can carry 1 A or more.
To supply LED circuits, other parameters like you indicated are almost irrelevant as I assume your input will be a 120V AC to 12 V AC transformer (you can find a wall plug-in directly offering 12 V, 1 A regulated for a low cost).
Find a data sheet on any commercial diode bridge and the Vrrmax is the max reverse peak voltage, If is diode max forward current, I av is the average DC current for a given dissipated power (diodes get warm due to a finite voltage drop for the forward current). Ir is the reverse current at a maximum reverse voltage (usually neglectable below it, a microampere or so). Vdc is the output DC voltage when the load is preceded by a typical RC or LC filter to reduce ripple.

Find a basic electronics textbook and read about rectifiers. They are simple but they may grow quite complex under special conditions.

Thanks a lot. Really appreciate it..