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详细内容

NPIY̎Մ庸ӽӲ̎ؿ

  庸ИI^ձһNԄӺӼgк|ɿc^MһԺʡԴ͹˄ڄӏȵc

  庸ӹˇmȻЮИI^MĺֶS 헹ˇgIJlչ˂ԄӺӼgҪҲԽԽ

  ĿǰЩʹԄӺӵďSьcʽܵ͵޶fĴcǣB©뺸̓ٺѺȵ

  

1ԄӺO

  ԄӺ^ʹOăc|ֱӵPϵ磺OеƲ朗lbٶ庸acAбǵĿac^Ęaۇڼ aõOӋͿʽxȵں^ʹӹˇlˇ^̻ͬOIJ_ĺЧҲ^e

2at(aC)ķNYλ

  (1)at(aC)ķN

  atĽYҊŽ׷NֽatֽatԄӽat߲atβatpatβһwat

  (2) ׷NҊat(aC)Yλã

  ֽatY^ҪaӟضȿrԴȽMIJһպӷrùΰҸںϱs|(ֽatһIJ庸tܱa❍o)պӡưAбһĽǶȽ뺸ԼӉȻҔ[һλ򔵴كAбҺrg3-5ͨ ^@һ^õӡưĺ

  Ԅӽaat

  ķɷ֞ɃɷNԄʽaCԄӹΰʽaCĽYҪAᲿasݔͲƲֵԓԄӽaat͸߲庸CǞԪLOӋatĺӷʽЃɷNһNDZʹ܇dbںӕr܇db܉܉EӅ^r܇db܉܉E½ʹPCBPc|;һNDzùʽͨ^atMкӵPCB_atϷrݔֹ͎ͣatͨ^ƚ׻늘O׌cPCB|Ķɺӵ

  ߲βpһwatĽYԄӽatһֻǰԲͬʹõc׃ijЩӽYaʽͿƷʽ

  (3)λã

  ^˼׌PCBںǰͿą^䘋첻ͬͿķʽҲͬнպʽʽl ʽFʽȵ

  A^njͿPCBMмӟĶʹ_ѻԵą^ӟ᷽ʽIJͬɌ֞飺 ** ӹAhtӟմɰAhtŹܼӟAhtӟմɰӟLpAʯӢʽӟAȵ

  AӟҪǣ

  1M;

  2]lͺȵ܄ˮ;

  3ֹӡư^弱ӟpPCBṩһ^ɟ

  a偵ãб(~݆)IJ۵λ򵽸λć̎¡̎a(ʽγR)ڲργĤsɽ֝BӡưںĝͻC|

  s^ s^Ǟ麸PCBMнصbӺӡưĿsǷdzҪӡư庸Ӻ󲻿stں ӺԪӰض߀^m^ߵֵӺ횱M쌢ųԷֹӡư~ĽY½ʹԪpˆDӡƾ·ϵľwĜsЧD

  

  

3POx

  xúOҪcSHrͰlչڅ“ϵһxúOҪaԪϼoϑùϵy

  (1)һԺO(β庸CCp庸C) _ж_O䌦ԪɺԵҪ^Ԫ ҪͼӹԲCҪԪ μӹĹ^ֹϼʩr_ӡưĿɺҪҪ

  (2)κO(߲C_Cλp庸C)L_ԪɲҪμӹ ݔA߽YPCBČȲ̫һκӺPCBܟ׃κ_rЉĻӰ푵ڶMݔ͎˷NӷʽԪӡư忹_Ҫ^ Ԫ_P늸мԪǾԪ^ɴΟ_􌢕FʧЧӡưҲ׃

  

DIPˇɼȱݷ

  ԭσr񲻔ϝqڄɱĽIľDzཱུԼijɱDIPѽɞһwCɽyֲ挦DIPӆpDIP޳ɞ҂оn}

DIPˇ--

  1rg:ָcc|󝙝_ʼĕrg

  2ͣrg:PCBijһcĽ|浽x_ĕrg,ͣ/ӕrgӋ㷽ʽǩsͣ/ӕrg=匒/ٶ

  3Aض:AضָPCBc|ǰ_Ĝض(Ҋұ)

4Ӝض

  ӜضǷdzҪĺӅoͨںc(183C)50C ~60CrָatĜضȌH\ЕroӵPCBcضҪڠtةo@PCBĽY

  A Ԫ Aض

  M ͨcb 90~100

  pM ͨ 100~110

  pM b 100~110

  Ӱ ͨ 15~125

  Ӱ b 115~125

庸}棺

  ıһƤwoغϲLȷώ׺oBoڲ庸^ЩoPCB|aǰرoƤѩoPCBǰao޵رǰMo@fƤcPCBͬӵٶƄӲ庸C

  cͣPCBM벨ǰ(A)roc_ӟoδx_(B)֮ǰoPCBںЩo“ox_β˵˲goĺڝéoճںPϩoڱ揈ԭoFտsСBo˕rcP֮gĝڃɺP֮gĺϵăȾ˕γMoAĺcox_βĶຸϩoԭo䵽aֹ“İl

ֹ“İl

  1ʹÿɺԺõԪ/PCB

  2޵Ļ

  3PCBAضȩoӺPĝ

  4ߺϵĜض

  5ȥкs|opͺϵăȾoڃɺc֮gĺϷ_

  

庸CгҊA᷽

  1՚⌦ӟ

  2tӟӟ

  3՚ݗYϵķӟ

ˇ{

  1߶:߶ָ庸еPCBa߶䔵ֵͨPCBȵ1/2~2/3,^ڵĺPCBıoγɡB

  2̓A:庸CڰbrʹCˮƽo߀{bõăAǩoͨ^Aǵ{o{PCBcĺӕrgomăAǩoںҺcPCBĄxoʹ֮a偃

  3L:^LoAx_ӲoA·һխLĎ_ڵġǻwoխLǻwܴo絶oʷQL

  4ϼȵӰ:庸^Щoϵs|ҪǁԴPCBϺP~o^~ºȱ

  5

  6ˇąf{:庸Cš٩oArgoӕrg̓A֮gҪf{o{

  

ȱݷ1մaPOOR WETTING:

  @NrDzɽܵȱc,ںcֻвմa.ԭ򼰸Ʒʽ:

  (1)Ⱦ,֬,D,Ⱦͨ܄ϴ,Еrӡˢrմϵ

  (2)SILICON OILͨÓģ֮,ͨڻ弰_ϰlF,SILICON OIL,֮ʹҪdzСǮͳl},lմڻ϶մa

  (3)ArƳϵĆ}l,oȥrմa,^aɽQˆ}

  (4)մʽ_,ԭlݚ≺,ʹĭ߶Ȳ򲻾ʹ岿֛]մ

  (5)argaزմa,aҪĜضȼrgWETTING,ͨaضȑcض5080֮g,մargs3.{aճ

2ֲմa

  һcմa,ͬǾֲմa¶~,ֻбһaoγMĺc

3亸c

  c,ƽ,󲿷ԭںaҪsγɺcrӶ,עatݔǷЮ

  

4cѣ

  һͨǺa,,ͨ,_֮gÛϵ,δ϶,ڻ|,ϼOӋȥ

5ca̫

  ͨuһc,ϣִֈAֵĺc,Œ^ĺcԼδ

  (1)atݔͽǶȲ_ɺc^,AбǶ17OӋʽ?#123;,һǶȼs3.5Ƚ,ǶԽմaԽǶԽСմaԽ

  (2)aۜض,Larg,ʹaٻa

  (3)Aض,ɜpٻմa,Ч

  (4)׃,Ԟ齵,ͨԽ߳aԽҲԽ׶·,ԽͳaԽԽa,a

6a()

  һ}ͨlDIPWIVEĺƳ,_픶˻cϰlFбa

  (1)ĿɺԲ,һ}ͨSմa,ˆ}ɻɺȥ̽ӑ,ԇ؁

  (2)Ͻ(PAD)e^,þG()ᾀָ,ԭtþG()ᾀڴָ5mm10mm^K

  (3)aۜضȲմarg̫,aۜضȼLarg,ʹaٻaہ

  (4)֮sLǶȲ,ɳa۷,ac,ຸaocȾa

  (5)ֺraa,ͨFض̫,ºaضȲoȾؿsγɺc,^ؔF,LFڱArg

7GКa

  (1)rijЩcܼݵ|,^֮,`aaγaz,ñͪ(*ѱ؊乫s֮W܄),,Ȼϩ܄ϴ,ϴ߀ǟo,tлӲCURING_Ŀ,¹ʑr幩؛

  (2)_ĻCURINGɴһF,ڲǰк濾120Сr,¹ʑr幩؛

  (3)aPUMPaۃهɻմa,һ}^μõatSo,a_a߶(һra۲oֹraxa߅10mm߶)

  

8ɫ

  ںӻ܄ϴ^lFаɫڻ,ͨĚ,@|Ӱ푱|,͑

  (1)ͨǴˆ}Ҫԭ,ЕrһNɸ,ϴraװ,˕rõķʽnj؛̵ąf,aƷ^I

  (2)^Кs|,Lڃaװ,܄ϴ

  (3)_CURINGɰװ,ͨijһΪa,r幩؛̲ʹ܄ϴ

  (4)Sʹ֮coӲ,lµĻ幩؛,Sƕrl,Ո؛̅f

  (5).Ƴʹ֮܄ʹ|׃,^еҺɴˆ},hrgԽԽ

  (6)ʹ^ϻ,¶ڿ՚ˮӻ,h(ͨlʽÿܸ,ʽÿܸ,Fʽÿ¸¼)

  (7)ʹ,^꺸atͣŕrg̫Ųϴ,װ,Ms̺acϴĕrgɸ.

  (8)ϴ܄ˮֺ^,ϴaװ.܄

9ɫPgE

  ͨɫlںcĵײ픶,ˆ}ͨDz_ʹϴ

  (1)Ӻδϴ,ºںɫ,Mǰϴ

  (2)ںcɺɫgɫ,ҟoϴ,ˬFֺгlF,^֮Mϴ

  (3)ЙC^ߜضŸaڰ,_Jaۜض,^͸ߜص

10Gɫ

  GɫͨǸg,؄eӮaƷDzȫ,yֱ浽ǾGPWaƷ,ͨflFGɫ|龯Ӎ,̲ԭ,Ǵ˷NGɫ|ԽԽ,dzע,ͨϴ

  (1)gĆ}:ͨl~~Ͻ,ʹ÷,@Ng|Ⱥ~x˳ʾGɫ,lF˾Gɫg,Cʹ÷δ_ϴ

  (2)COPPER ABIETATES~cABIETIC ACID (Ҫɷ)Ļ,һ|ǾGɫ^ǸgҾи߽^,ӰӰƷ|͑ͬ⑪ϴ

  (3)PRESULFATEĚƚ,ںaaGɫ,ҪSڻϴ坍,Դ_坍ȵƷ|

  

11ɫg:

  ڰՄǰɫָϰɫ,ĿՄ_ϵİɫg,ǺUɷ^Ľ^ɴ,ҪxcUγȻU,c̼γ̼U(ɫg).ʹr,㲻ˮȻԄ¸g,ʹò܄,ֻϴoȥx,һٸg

  

12ᘿ׼ף

  ᘿc֮^e,ᘿںcϰlFһС,ׄtǺc^׿ɿȲ,ᘿ׃Ȳͨǿյ,ׄtǃȲ՚ȫ֮,γԭǺaښwδȫų,γɴˆ}

  (1)ЙCȾ:c_ܮawᘿ׻,ȾԴ܁ԄֲC򃦴r,ˆ}^麆ֻҪ܄ϴ,lFȾSILICONOIL䲻ױ܄ϴ,ƳБ]Ʒ

  (2)Н:ʹ^˵Ļ|,ʹ^ֲڵ@׷ʽ,؞̎՝,a^ܵߟl,QǷڿ120濾Сr

  (3)ҺеĹ:ʹô僕r,cͬre,ߜ؄t]l,؄e僽r,ú^ٵҺ,Ȼ@Ҫ؛

  

13TRAPPED OIL:

  ֹͱaۃȽӿCȾ,ˆ}aۺaҺ^,aۃ׷Ӻaɸ

14cҰ

  ˬF֞N

  (1)a^һΕrg,(sdһ)cɫD

  (2)ijƷcǻҰ

  (1)as|:ÿ¶ڙz򞺸aȵĽٳɷ

  (2)ڟıaijN̶ȵĻҰɫ,RAЙCںc^Ҳp΢ĸgʻҰɫ,ںӺϴɸ.ijЩoCZINC OXYCHLORIDE1%}ϴˮϴ

  (3)ںaϽ,a(40/60a)c^Ұ

15cֲ:

  cɰͻ,cwΠ׃

  (1)s|ĽY:ÿ¶ڙz򞺸aȵĽٳɷ

  (2)a:aPUMPaۃȽӿaȺaʹcɰͻ,aۺaҺ^,aۃ׷ӺaaۼPUMPɸ

  (3)|:ë߅,^ĵȲ_,aֲڱ

  

16Sɫc

  ϵaض^,鿴aؼؿǷ

  

17·

  ^ĺcɃɺc

  (1)arg,A᲻{at

  (2):ز,ӻ

  (3)Mзcaϲ,ija

  (4)·OӋ:·cg̫^ӽ(0.6mmg);ʽcIC,t]Ia|,ʹְԅ^,˕r֮2|()

  (5)Ⱦae^ﱻPUMPɶ·atMһȫaۃȵĺa.TNƬӹ֮һ(₀⣺ֻвPCB)ӹ£

  1ԪMAӹ

  Aӹ܇gˆTBOMε̎IȡJˌ̖ҎӰMaǰAӹԄɢbݼ_C늾wԄӳ͙CȫԄӎʽ͙CȳOMмӹ;

  Ҫ

  κԪ_ˮƽҪͶλ׌һС5%;

  Ԫ_PCBPľxҪ̫;

  ͑ҪtҪMгṩCеֹ֧PN

  

  2NߜzMNߜzaͨ׼ں󺸵ԪMз;

  3DIPӹˆT莧o늭hֹloԪBOMμԪλ̖DMвrҪмJܲe©;

  4ڲbõԪҪMЙzҪzԪǷe©;

  5ڲo}PCBһhDz庸ͨ^庸CMȫλԄӺ̎ιԪ;

  6ߜzȻMЙz@һhҪĿzͨ^^캸ӺõPCBǷ񺸽;

  7ڙzδPCBҪMaMоSԷF};

  8@ᘌ؄eҪԪOĹеԪˇϵƲֱͨ^庸CMкҪͨ^ֹ;

  9Ԫ֮PCBҪMйǷzȱҪMоS̎DIP󺸹TNƬһҪDIPOһ܇goUUa_|ƲTѿŽ^覴Ʒ庸ǬFҪˇ֮һmȻһֱܵTgě_߀ஔԪoȫTbg߿ɿҪIJBһЩ늽ݵ˲庸߀Il]Ҫ

  

  ô庸ƳЩ?ԭʲô?θ?^һӹ^һĺЧҪ]䷽ԪPCBƥbOӋ^̿ƅһõĽYжԭľһЩҊĺӲaԭMзƽh庸Ҋ£

  

  a

  accǺa_ȫҝǶȴ90

  

  aԵșzǜضAضȺaض^Ͷʹaճȸ߶ɶahƒӜض

  at~^ҲʹataճɶahҪڙzya~C~ĺڿɿصķ

  O䅢Ҫ]PCBĿɺԆ}Pͺӿ^ȾʹɺԘOao֝񺸽ӱֻγɰ@NrhPCBMпɺԷҪSEMEDXzyKٰSƳPCB|\ݔo

  ԽҲпɴ˲Ե͵ѽܰl]˕rhQ

  aЕrаlͬһԪ˷NrԪĿɺԲhԪMпɺԷбҪԪ˻؏SҲُS|\ݔo

  aͬһԪҲпPCBOӋЛ]ʹûPʽĸOӋnjֱcӵ،/ԴBӵĺӿoOӋ˺^еğpʧɺӜضȵKaoںPλöѷeγɶa

  

  

  ָDzĈAFbcԭҪǺsrտscϵyMbrcx̫`С늚g϶Ҫl·

  

  ضкֱܴPϵAضȵaضȵͶʹ^ڜضȲaoЧտsaضȵͬraճӄγhOÜyض

  ҲкܴPϵĻԲߝ½r͟oȥͽͱ揈ʹax_atroЧտsԺ͇ͿćͿĴ͸

  ^rĺҲп܁صat

  eں_^LɵҪ_h_(L)Ҫ2mm

  

  Ba

  BaַQIJBһĺcɺBһ@NBӱض늚

  

  BaAҪԴ^-OӋ-_ʼDFMȞҪxpitchС2mmPTHԪ_Ҫ2mm~hg಻ҪС0.5mm~hgӰԪLȷc܉\зһȵ

  Ԫpitch^С~hg^Сh_С0.5mmͬrбPmλaƬ(⁺ϽRF)ԽBaĵLU

  

  aضȵaԾͲBa;AضȵӕrضȲҲBamߜضڸBa

  Ҫm^Ϳܼfluxʹúϵĝ½Ba

  QԸڜpBaԏӝ

  

  a

  aָ庸ӺСaڰ躸Ĥw

  

  ȌPCBMm濾ų^rˮaRMaa

  ^AضƫͿ܌܄ˮֲȫl^ĕrОRaĬFaĮahpćͿAض

  

  亸

  亸ڟԭɺcF񲻼ʻɫް

  

  ͨʹúӕrgɺcҰmӺӕrg{AضȺaضڲĸ

  cƽ,󲿷ԭԪںaҪsγɺcrӶ,@NrҪעצǷЮ

  ȾҲ亸Ҫ؁σƄеıo

  

  

  ]ĺȫtlиgԕӰ푺cɿ

  

  pćͿmAضԜp

  ֬w^Ʒ|úɚ^ҪaƷQ

  mӺӕrgҲԜpĚ

  

  װ

  װһNlPCBȲIJҪDzwSc֬ĸIJַx˲ͨcᑪP

  

  ȱcᑪPmAضͺӜضpٺӕrgĿwϽPCBܵğ_ԽͰװ߮aLU

  TgPCBڟoUƳҲܕ°װߵĮaTgPCBoܟoUƳ̵ĸߜ؛_lֲ֌γɰװhoUƳ̵PCBTgҪС150

  ~ƽҲǰװ߮aԭ֮һ~ƽʹPCBCTEͬܟÛƽaװ߲PCBDFMAҪ~ƽ̎

  ׃

  ׃εcPCBܟl׃rڸ׃lŤD׃

  

  ~ƽҲ׃ήaԭ֮һ~ƽʹPCBqrCTEƽĶa׃PCBDFMAҪ~ƽ̎

  Ӝض^rg^LҲɰ׃ߜؕrgLPCBğ׃ҲͼӴ׃εLUmaضڜpٰӵ׃

  ڲ庸cʹúͷǺһĜزPCB׃ΟoAߵOӋPCB׃΅sкܴĸmӉlPCBcбPǻ0.5mmg϶ӎɗUĉwaPCBğqs

  

  

  a

  aָaPCBķǺɷcaK

  

  a^Ǯa˲ҪԭaζaPCBĉwΑBaͿͨ^ӿӿPCBķǺaһaλPCBȷ1/2 - 2/3̎Hĸ߶ҪwaƷO

  бPĥpҲпaбPĥp^бP^tra^PCBa׃ҪrUĥpoʹõĊAҲбPc܉|IJλӲP䓉KԜpбPĥp

  

  עԴھWjքh

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