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SEM-604HES-.031, Hoei America Inc SEM-604HES-.031 Dáileacháin - Electronics-ic.com
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Today, it is common sense that materials must be environmental friendly (no-clean type). As a result of
internationa l competition, the manufacturing industry demands mater ials that are high in quality and l ow in
Componen ts are getting increasingly smal l and highly c oncentrated. Th e requirement s by the PL law has
created a heavy burden on t he ins pecti on pr ocess. S ystem s are also getting incre as ing ly big.
To address these issues, Teresa has developed a high-quality and high-performance solder "SEM-604". It
cuts down on the irregularities a t the production line and reduces the b urden on the inspection process.
1. SEM-604 of Teresa is a RMA-type, non-chlorine, no-clean solder that conforms to the Federal
Standard ?# (now J-STD).
1) Produces no reaction in the silver chromate test;
2) Produces no dissolution of copper in the copper mirror test;
3) Has an 1 × 105 Ω • cm or better resistance against water solution.
That means there is no cleaning of flux residue. (There is no reactivity or dissolution of copper. Even
if the moisture in air is absorbed, the insulation characteristic will not be affected.)
2. The wettabilit y of the solde r is superior. It can be worked on at a temperature low er than that r equired
Flux activates at a relatively low temperature. At the same time, the thermal conductivity effect is
stimulated to liquefy solder.
3. The solder breaks well. Super-fine chip component s can be soldered without any prior application of
flux. (Even tabs of 0.25 pitch can be soldered manually.)
Flux activates at a relatively low temperature. At the same time, the thermal conductivity effect is
stimulated to liquefy solder.
4. As it is difficult for the solder or flux to stay on the tip of the soldering iron, scorching flux is
Flux activates at a relatively low temperature. At the same time, the thermal conductivity effect is
stimulated to liquefy solder.
5. It is effective against scattering soldering balls and flux.
Causes of soldering balls
1. The activator in the flux explodes causing etched solder to fly in all directions.
2. As the sol dering iron is pulled out quickly, the amount of solder that gets stuck on the solder ing iron
increases and the solder drops subsequently.
3. For solder wit h poor w e ttab ility, this pr obl em occurs w hen more sol der tha n necessary is provided.
Reasons for less scattering
1. Activator that does not explode is used.
2. Compared with products of other makes
Maker Wettability Solder supply Solder amou nt Solder balls
Other makes Ba d Must provide more than suitable Excessive Occur
Teresa Superior Provide suitable amount Optimal None
SEM-604HES-.031 Achoimre na n-ábhar
T eresa S tring Solder SEM-604 Outline T oday , it is common sense that m aterials must be enviro nmental friend ly (no-clean type). As a result of internationa l competition, the manufacturing industry demands mater ials that are high in quality and l ow in cost. Componen ts are getting increasingly smal l and highly c oncentrated. Th e requirement s by the PL law has created a heavy burden on t he ins pecti on pr ocess. S ystem s are also getting incre as ing ly big. T o address these issue s, T eresa has developed a h igh-quality and high- performance solder "SEM-604". It cuts do
6. It is ideal as a countermeasure against the po or soldering ef fect produced by automatic soldering equipment ( few variations even for pointed solder ing.) The robot performs solder ing at a constant speed regardless of the condit ion (oxidization or stain) of the substrate or component. T eresa's solder works in a wide temperature scope : 1. Flux reacts qu ickly and clean s the soldering part. It is good at transm itting heat and it reliably expedit es the fluidi ty of sold er . 2. As such, operations can be pe rfor med in stable manner and the ef fect of automatic sol dering by rob
Procedure for Re plac ing Cre am Solder Before replacing the cur rent cream solder , please perfor m the following verificatio n o per ations. Operation Pr ocedure 1) Setting up the temperature profile If the current item is to be replaced, first substitu te T eresa's products under exi ting conditions and observe the follow ing. c Check the printing pro perty (printi ng sha pe and un iform ity of the cr eam ) d Preheat it and check for sags. e Check for soldering balls. f Check for bridges. g Check for floati ng chips. 2) When the study of the tem perature profile setup returns NG resul
Attachment- T echnical Inform ation 1 New Crea m Sol der Rev iew Please implement t he following before re viewing the cream solder . 1. Pre-printing Oper atio n c Cleaning the metal mask Please use our cleaning flui d for the metal mask. Please make sure that there is no r esidual cream in the opening in par ticular . Please check fine sections, such as 5mm pitch QFP 10 05 chip, with a loupe. d Post-clean ing wiping Please wipe the inner and outer side of the metal mask with the SPICK T -3 paper (A sahi Kasei Kogyo). (Before w iping, use mir to blow away remaining c lea ning flui d from the
Attachment- T echnical Information 2 T emperature Pro file T emperature T emperature incr ease Increase in peak temperature Ti m e The temperature profile is determined by the heat source of the reflow furnace?###, fan, size of the substrate, size of mounted parts, oxidizati on of electrode, and de nsity of parts, etc. Thus, ther e is no specified temperature profile for our cream solder . 4. Attending yo ur review sessions on cream solder The initial revie w of the cream solder require s the existing line to be shut down, which coul d cause inconvenienc e to the producti on activity . Thus,
páirteanna gaolmhara do SEM-604HES-.031
SOLDER RMA 60/40 .031"DIA 1KG
SOLDER RMA 60/40 .015"DIA .25KG
SOLDER RMA 60/40 .063"DIA 1KG
SOLDER RMA 60/40 .039"DIA 1KG
SOLDER RMA 60/40 .026"DIA 1KG
SOLDER RMA 60/40 .020"DIA .50KG
SOLDER RMA 60/40 .047"DIA 1KG
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eochairfhocail a bhaineann le SEM-604HES-.031
Hoei America Inc SEM-604HES-.031
Cuardaigh Chuid Uimhir dhíth ort anseo:
Iontráil cuid uimhir iomlán nó páirteach monaróir le ar a laghad de 3 litreacha nó uimhreacha
Ceisteanna Coitianta / Cabhair
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