Kev tsom xam qhov tob ntawm Press-Fit tech thiab cov ntaub ntawv thov

Nyob rau hauv xyoo tas los no, Press-Fit thev naus laus zis tau siv ntau ntxiv hauv kev tsim cov tshuab hluav taws xob hauv tsheb, lub zog thiab lwm yam lag luam. Press-Fit Technology yog dab tsi? Dab tsi yog qhov zoo ntawm nws daim ntawv thov? Dab tsi yog qhov yuav tsum tau ua rau cov ntaub ntawv alloy uas ua tau raws li Press-Fit technology?

01

Xovxwm-Fit, tseem hu ua "fisheye termination", yog lwm txoj kev daws teeb meem rau solder mounting. Kev txhim khu kev qha ntawm kev sib cuag hluav taws xob feem ntau yog ua tiav los ntawm txoj kev sib txuas tsis pub dawb ntawm kev sib txuas txias. Lub fisheye kawg yog nias rau hauv PCB qhov, thiab lub siab clamping quab yuam yog tau los ntawm ib tug me me nias quab yuam. Thaum lub sij hawm nias, lub fisheye kawg yog elastically deformed thiab muab ib tug nruj kev twb kev txuas nrog tsis tshua muaj kev sib cuag tsis kam thiab siab ntseeg.

Yooj yim muab tso, Xovxwm-Fit tsim ib qho kev sib tshuam electromechanical yam tsis muaj kev sib txuas, uas tuaj yeem txhim kho qhov txuas ntawm PCB module. Kev tshem tawm ntawm cov txheej txheem soldering tsis tsuas yog txo qhov kev sib txuas ua haujlwm, tab sis kuj tseem txo cov nqi tsim khoom thiab lub sijhawm sib dhos.

02

Xovxwm-Fit technical zoo

Piv nrog rau kev siv vuam tsoos, PressFit muaj ntau yam zoo:

(1) Thaum crimping, PCB thiab cov khoom yuav tsis tsim thermal stress, thiab impedance me me

(2) Lub zog me me, siab clamping quab yuam, tsim kom muaj kev sib txuas ceev hauv qhov chaw sib cuag ntawm Press-Fit thiab PCB

(3) Nws tsis muaj cov txuas txuas, tsis muaj cov dej ntws tawm, tsis muaj kev tu, thiab rau qee qhov tsis txhob muaj teeb meem tshwm sim los ntawm kev sib tsoo xws li tin whiskers, tawg, thiab tsis ntub dej.

(4) Reusable, ib puag ncig tus phooj ywg

(5) Yooj yim sib dhos, yooj yim txij nkawm, yooj yim hloov module

03

Hom Copper Alloys rau Xovxwm-Fit

Bronze: CuSn4/C511, CuSn6/C519, CuSn8/C521

Qhov zoo: qib muaj zog, nplua nplej, qis Young's modulus

Disadvantages: low electrical conductivity, low stress relaxation performance under high temperature conditions (>100 degree)

CuNiSi alloy: C7025, C19005 / C19010

Qhov zoo: siab zog, kev ntxhov siab so ua haujlwm txog li 150 degree / 1000h, nruab nrab conductivity

Disadvantage: Higher Young's modulus - nyob ntawm kev thauj mus los

CuCrZr alloy: C18150 / C18160, C18400

Qhov zoo: siab hluav taws xob conductivity, kev ntxhov siab so ua haujlwm txog 175 degree / 1000h, nruab nrab lub zog

Disadvantages: kev ua tau zoo, electroplating kev ua tau zoo