Solder balls yog cov khoom siv hlau kheej kheej nrog cov tin ua cov khoom tseem ceeb. Lawv cov ntsiab lus tseem ceeb feem ntau yog cov tin ntshiab los yog cov tin -raws li cov khoom uas muaj ib feem ntawm alloying ntsiab.
Pure Tin Composition (High -Purity Solder Balls)
Lub ntsiab tseem ceeb ntawm cov pob zeb ntshiab yog tin (Sn), nrog rau kev purity feem ntau tshaj 99.9%. Cov pob no yog cov yam ntxwv los ntawm qhov qis melting point (kwv yees li 232 degree), hluav taws xob zoo heev thiab thermal conductivity, thiab zoo ductility thiab corrosion kuj. High-purity solder balls yog dav siv nyob rau hauv cov khoom siv hluav taws xob, cov txheej txheem soldering, thiab kev kuaj xyuas qhov tseeb. Piv txwv li, nyob rau hauv nti ntim, ntshiab tin npas tuaj yeem ua tiav kev sib txuas txhim khu kev qha ntawm cov khoom siv thiab cov laug cam los ntawm reflow soldering technology. Vim lawv cov ntsiab lus impurity tsawg, tsawg heev residues yog generated thaum lub sij hawm soldering, zoo txo qhov paug ntawm hluav taws xob Cheebtsam thiab ncua cov khoom lifespan.
Tin Alloy Composition (Tsawg-Tub kub Solder Balls)
Yuav kom ua tau raws li cov txheej txheem tshwj xeeb, cov khoom me me ntawm lwm cov khoom siv hlau feem ntau tau ntxiv rau cov khoom siv los ua cov ntaub ntawv alloy. Cov khoom sib xyaw ua ke xws li tin-silver (Sn-Ag), tin- tooj liab (Sn-Cu), thiab tin-bismuth (Sn-Bi). Tsawg- cov khoom kub kub, vim qhov sib ntxiv ntawm cov khoom xws li bismuth lossis indium, tuaj yeem txo lawv cov ntsiab lus melting ntawm 138℃thiab 180 degree. Cov pob no yog tshwj xeeb tshaj yog haum rau soldering tshav kub-sensitive electronic Cheebtsam, xws li yooj ywm Circuit Court boards los yog micro-sensor sib dhos. Alloying tsis tsuas yog txhim kho cov neeg kho tshuab lub zog tab sis kuj txhim khu kev ntub dej, ua rau cov txheej txheem soldering zoo dua. Tsis tas li ntawd, tin-silver alloys yog siv dav hauv aerospace thiab automotive electronics vim lawv txoj kev ntseeg siab, thaum tin{17}} tooj liab alloys tau dhau los ua qhov kev xaiv tseem ceeb rau cov neeg siv khoom siv hluav taws xob vim lawv cov nqi kom zoo dua.
Cov Khoom Tshwj Xeeb Solder Balls (Functional Additions)
Rau cov ntawv thov kev lag luam tshwj xeeb, cov pob zeb yuav muaj cov ntsiab lus tsis tshua muaj hauv ntiaj teb (xws li cerium thiab lanthanum) lossis cov hlau hloov pauv (xws li npib tsib xee thiab zinc) txhawm rau txhim kho oxidation tsis kam, hnav tsis kam, lossis hlau nplaum. Piv txwv li, npib tsib xee- uas muaj cov khoom siv roj hmab muaj kev ruaj ntseg nyob rau hauv siab - qhov kub thiab txias thiab haum rau vuam cov khoom siv petrochemical; thaum lub ntiaj teb tsis tshua muaj - ntxiv cov pob solder tuaj yeem txhim kho lub neej qaug zog ntawm cov pob qij txha. Cov khoom no feem ntau xav tau customized ntau lawm kom tau raws li cov neeg siv khoom tshwj xeeb rau cov khoom siv.
