Liquid Flux and Very small diameter solder recommendations
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Liquid Flux and Very small diameter solder recommendations
I need some suggestions for sources for some no-clean, non-corrosive, organic, liquid flux and some rosin core solder smaller than .020. I don't know if they make solder that small but the smaller the better since its used for some very fine surface mount soldering. The liquid flux will be used for simple board reflow with heat gun. I'm having a hard time finding this stuff in small quantities.
I suggest you try Techni-Tool http://www.techni-tool.com
They show Kester 44 rosin core 60/40 wire solder available in .015 dia. Interesting that it lists for $17.15/lb. whereas the more usual .031 dia. lists for only $8.41/lb. The smaller diameter must be harder to manufacture.
They also seem to have many types of flux listed. Even if you don't see what you are looking for on their web page - give them a call. I have found them to be very helpful in past transactions.
Of course - if you buy from them - they will probably send you their catalog. Very dangerous to look at - too many temptations.
They show Kester 44 rosin core 60/40 wire solder available in .015 dia. Interesting that it lists for $17.15/lb. whereas the more usual .031 dia. lists for only $8.41/lb. The smaller diameter must be harder to manufacture.
They also seem to have many types of flux listed. Even if you don't see what you are looking for on their web page - give them a call. I have found them to be very helpful in past transactions.
Of course - if you buy from them - they will probably send you their catalog. Very dangerous to look at - too many temptations.
SMD
Hello.
For SMD work, you will need a soldering needle.
This is a hypo needle and dispensing device in one.
You get one surplus, or be prepaired to pay, dearly.
The things can cost over $6000 complete, but you can do wonders with it.
For SMD work, you will need a soldering needle.
This is a hypo needle and dispensing device in one.
You get one surplus, or be prepaired to pay, dearly.
The things can cost over $6000 complete, but you can do wonders with it.
Don't use 60/40, use 63/37
Whatever you do, DO NOT USE 60/40 solder! Use 63/37.
60/40 solder has three phases (in the temperature ranges we care about) - solid, liquid, and in-between. If the solder is disturbed in the in-between state, it will form a mass of small crystals that is NOT mechanically sound (a "cold joint").
63/37 solder (also known as "eutectic") does not have the in-between state - it is either a liquid or a solid, and as such is MUCH less prone to cold joints. It also goes fully liquid at a lower temperature than 60/40 solder.
60/40 solder has three phases (in the temperature ranges we care about) - solid, liquid, and in-between. If the solder is disturbed in the in-between state, it will form a mass of small crystals that is NOT mechanically sound (a "cold joint").
63/37 solder (also known as "eutectic") does not have the in-between state - it is either a liquid or a solid, and as such is MUCH less prone to cold joints. It also goes fully liquid at a lower temperature than 60/40 solder.
This is my opinion, not Aeroflex's.
I WILL NOT give you proprietary information. I make too much money to jeopardize my job.
I AM NOT the Service department: You want official info, manuals, service info, parts, calibration, etc., contact Aeroflex directly, please.
I WILL NOT give you proprietary information. I make too much money to jeopardize my job.
I AM NOT the Service department: You want official info, manuals, service info, parts, calibration, etc., contact Aeroflex directly, please.