Solder doesn't stick on usb conector why?

[XPTO2511]

Hello, i bought the micro usb conector from diferent supliers...

Same micro usb charge conector the solder glue perfectly... in other the solder doesn,t stick..

anone already have the same problem?

Already change iron, plut flux, temperature etc..

i think maybe is the quality of the metal on same usb charge conector...

Iron is beetween 300 and 450 degrees..

but is not iron problem because some conector the solder stuck easily..

any way to pass this problem?

tanks

[biaby]

lemon .................................................. .

[orx]

Originally Posted by XPTO2511

Hello, i bought the micro usb conector from diferent supliers...

Same micro usb charge conector the solder glue perfectly... in other the solder doesn,t stick..

anone already have the same problem?

Already change iron, plut flux, temperature etc..

i think maybe is the quality of the metal on same usb charge conector...

Iron is beetween 300 and 450 degrees..

but is not iron problem because some conector the solder stuck easily..

any way to pass this problem?

tanks

hello

before of to solder any connectors whatever its nature you should always clean tin residues with braid this facilitates the cohesion of the tin .
Remember
good flux
good tin
temperature on iron stable to 350° i advice to use copper tips are economic and great performance.