Iindidi zeeModyuli

I-PCB eguquguqukayo

1. Ingakanani ububanzi/isithuba esincinci somgca we-PCB eguquguqukayo?

Eqhelekileyo: 30μm/30μm; inkqubo ephucukileyo: 12μm/12μm (umgangatho we-IPC-2223)
2. Zingaphi izihlandlo apho iibhodi eziguquguqukayo zinokumelana nokugoba?

Isiseko sepolyester: ~izihlandlo ezili-100,000; isiseko sepolyimide: ≥izihlandlo ezili-1,000,000
3. Ingakanani iqondo lobushushu lokusebenza le-PCB eguquguqukayo?

Isiseko sePolyimide: -196℃ ukuya ku +260℃; isiseko sePolyimide: -55℃ ukuya ku +150℃
4. Ungabala njani irediyasi yokugoba yeebhodi eziguquguqukayo?

Jikelele: R≥3×ubukhulu bebhodi; usetyenziso olukhethekileyo: R=1.5×ubukhulu bebhodi
5. Ingakanani isantya sokufunxwa kwamanzi se-PCB eguquguqukayo?

I-Polyimide:
6. Zeziphi ii-substrates zebhodi eziguquguqukayo eziqhelekileyo?

I-Polyimide (PI), i-polyester (PET), i-polymer yekristale engamanzi (LCP)
7. Yintoni i-dielectric constant yeebhodi eziguquguqukayo?

I-Polyimide: εr≈3.5; I-PET: εr≈3.2
8. Ungakuthintela njani ukwahlukana kwebhodi eguquguqukayo?

Iprofayili yobushushu bokulawula i-lamination; i-polyimide lamination: 280-320℃
9. Zithini iinkcukacha zobukhulu befoyile yobhedu yebhodi eguquguqukayo?

Iqhelekileyo: 18μm, 35μm, 70μm; ubuncinci: 9μm
10. Yintoni i-PCB eguquguqukayo enokumelana noxinano olukhulu lwangoku?

Ifoyile yobhedu eyi-18μm: ~20A/mm²
11. Ungavavanya njani ukusebenza kokugoba kweebhodi eziguquguqukayo?

Uvavanyo lokugoba umjikelo ngokwemigangatho ye-ASTM D2176
12. Ziziphi iindlela zonyango lomphezulu kwiibhodi eziguquguqukayo?

Igolide yokuntywiliselwa kwe-nickel engena-electroless (ENIG), itini yokuntywiliselwa, i-OSP; ENIG: Ni 3-5μm, Au 0.05-0.1μm
13. Lithini iqondo lobushushu elifanelekileyo le-SMT soldering kwiibhodi eziguquguqukayo?

Ubushushu obuphezulu bokubuyela umva: isiseko se-polyimide ≤260℃; isiseko se-PET ≤230℃
14. Ungayila njani indawo yokuqinisa iibhodi eziguquguqukayo?

Ubukhulu bokuqinisa: 1.5-2 × ubukhulu bebhodi eguquguqukayo; imiphetho ejikelezileyo iyafuneka
15. Ingakanani ubukhulu bemaski yesolder kwi-PCB eguquguqukayo?

Iqhelekileyo: 15-30μm; iimfuno ezikhethekileyo: ukuya kuthi ga kwi-50μm
16. Ngaba iibhodi eziguquguqukayo zinokucutshungulwa ngee-vias ezingabonakaliyo/ezingcwatywe?

Ewe; ubuncinci obungaboniyo nge-diameter: 0.15mm, umlinganiselo wobungakanani ≤3:1
17. Ungakhetha njani phakathi kwe-polyimide kunye ne-polyester?

I-Polyimide yeemfuno zobushushu obuphezulu kunye nokugoba okuphezulu; i-polyester yezicelo ezinoxabiso oluphantsi
18. Zithini iimeko zokugcina iibhodi eziguquguqukayo?

Umswakama
19. Ungazisombulula njani iingxaki zebhodi eguquguqukayo?

Yongeza uyilo lwebhalansi yomaleko; uxinzelelo lwe-lamination: 3-5MPa
20. Yintoni ubungakanani obuncinci be-PCB eguquguqukayo?

Eqhelekileyo: 0.3mm; inkqubo ephucukileyo: 0.1mm
21. Ithini imilinganiselo yokuqina kwamaxolo kwiibhodi eziguquguqukayo?

Umgangatho we-IPC: ≥1.5N/mm (ifoyile yobhedu eyi-18μm)
22. Ngaba iibhodi eziguquguqukayo zingasetyenziswa kunye ne-wave soldering?

Akukhuthazwa; kucetyiswa ukutshiza ngokutsha okanye ukutshiza ngamaza akhethiweyo
23. Ungayifumana njani i-EMI shield kwiibhodi eziguquguqukayo?

Umaleko wokukhusela we-copper/nickel plating; ukusebenza kakuhle kokukhusela ＞60dB
24. Yintoni i-dielectric loss tangent yeebhodi eziguquguqukayo?

I-Polyimide: tanδ≈0.003; I-PET: tanδ≈0.01
25. Ingakanani i-PCB eguquguqukayo enokuthwala uxinzelelo olukhulu ngoomatshini?

Amandla okutsalwa: i-polyimide≥150MPa, i-PET≥100MPa
26. Ungakuthintela njani ukwaphuka kwebhodi eguquguqukayo kwiindawo ezigobileyo?

Uyilo lotshintsho lwe-Arc; ukukrola ngefoyile yobhedu enomgama we-0.05mm
27. Ithini ireyithingi ethintela ilangatye yeebhodi eziguquguqukayo?

I-Polyimide: UL94 V-0; I-PET: UL94 HB
28. Ngaba iibhodi eziguquguqukayo zinokudityaniswa ngamacala amabini?

Ewe, ingqalelo kuyilo lokuqinisa kunye nolandelelwano lokutywina
29. Ingakanani ubude bomlinganiswa obuncinci kwi-PCB eguquguqukayo?

Eqhelekileyo: 0.15mm; inkqubo encinci: 0.1mm
30. Indlela yokulinganisa ukungasebenzi kakuhle kweebhodi eziguquguqukayo?

Isihlalutyi senethiwekhi; ukuchaneka kolawulo lwe-impedance oluphawuleka ± 5Ω
31. Ithini i-coefficient ephezulu yokwandiswa kobushushu kwiibhodi eziguquguqukayo?

I-Polyimide: I-axis ye-X/Y≈15ppm/℃, I-axis ye-Z≈70ppm/℃
32. Yintoni ukunyamezelana kokubopha kweebhodi eziguquguqukayo?

Ukuchaneka kobhaliso lwe-Interlayer≤50μm
33. Ungazisombulula njani iingxaki zokulibaziseka kwesignali kwiibhodi eziguquguqukayo?

Lawula ubude bomkhondo; sebenzisa uyilo lwesibini somahluko
34. Zeziphi izinto ezichaphazela ubomi be-flexible PCB flex?

Uhlobo lwe-substrate, ubukhulu be-copper foil, i-radius egobileyo, ubushushu obungqongileyo
35. Bungakanani ubukhulu beplati yobhedu engena-electron kwiibhodi eziguquguqukayo?

Ubukhulu beplati yobhedu ephuma emngxunyeni≥25μm
36. Ngaba iibhodi eziguquguqukayo zingenza ukugoba kwe-3D stereoscopic?

Ewe, kodwa kufuneka ukwakheka inyathelo ngenyathelo; i-engile nganye egobileyo≤90°
37. Ithini imigangatho yovavanyo lwetyuwa yokutshiza iibhodi eziguquguqukayo?

I-ASTM B117; ayizukuba nagqwala emva kweeyure ezingama-24
38. Ingakanani ubungakanani obuncinci bephedi ye-PCB eguquguqukayo?

0.3mm (ukudlula nge-0.1mm), 0.5mm (ukudlula nge-0.3mm)
39. Ungayiphucula njani indlela yokusasaza ubushushu kwiibhodi eziguquguqukayo?

Yongeza umaleko wefoyile yobhedu eqhuba ubushushu; umbane oqhuba ubushushu ukuya kuthi ga kwi-150W/mK
40. Ithini i-standing voltage yeebhodi eziguquguqukayo?

Ubushushu obuqhelekileyo bumelana ne-voltage≥500V; uyilo olukhethekileyo olufikelela kwi-1500V
41. Ingakanani imida yerediyasi egobileyo yeebhodi eziguquguqukayo?

I-radius encinci yokugoba ye-polyimide: R=1mm (ubukhulu obuyi-0.1mm)
42. Ungakuthintela njani ukudumba ngexesha lokutywina iibhodi eziguquguqukayo?

Ubushushu bokufudumeza 80-120℃; ixesha lokugalela i-solder ＜imizuzwana emi-3
43. Iyintoni imfuneko yoburhabaxa bomphezulu kwi-PCB eguquguqukayo?

I-Ra≤1.5μm (umphezulu we-ENIG)
44. Yintoni umgangatho wovavanyo lokunyibilikisa iibhodi eziguquguqukayo?

I-JIS Z3198; ixesha lokumanzisa
45. Ingakanani isantya sovavanyo lokugoba oluguquguqukayo kwiibhodi eziguquguqukayo?

Isiqhelo: imijikelo emi-5-10 ngomzuzu
46. Ungayila njani indawo yokugoba yeebhodi eziguquguqukayo?

Uyilo lwegridi engenanto; gcina inkxaso ye-substrate engama-20%
47. Ingakanani i-convection density ephezulu ye-flexible PCB?

Ingafikelela ekubekweni kwecandelo le-0201; ubuncinci isithuba sendawo yi-0.3mm
48. Zeziphi iindlela zonyango ezingangenisi manzi kwiibhodi eziguquguqukayo?

Ukupakisha i-vacuum + i-desiccant; ikhadi lesalathisi sokufuma
49. Yintoni ulawulo lwexesha le-lamination kwiibhodi eziguquguqukayo?

Ixesha lokugalela i-polyimide: imizuzu engama-30-60
50. Yintoni umjikelo wovavanyo lokudinwa oluguquguqukayo kwiibhodi eziguquguqukayo?

Imijikelo eyi-1,000,000; uhlolo lokusebenza rhoqo kwimijikelo eyi-100,000
51. Ithini umda woyilo lobubanzi bomgca obuncinci kwi-PCB eguquguqukayo?

Umda wethiyori: 10μm (iteknoloji yomfanekiso othe ngqo welaser iyafuneka)
52. Zithini iimeko zokuphilisa i-inki yemaski yebhodi eguquguqukayo?

150℃ imizuzu engama-60 okanye 180℃ imizuzu engama-30
53. Ingaba i-dielectric constant yeebhodi eziguquguqukayo iyatshintsha rhoqo?

I-Polyimide: εr=3.5 kwi-1GHz, εr=3.2 kwi-10GHz
54. Ungavavanya njani ukumelana nobushushu beebhodi eziguquguqukayo?

I-megohmmeter ye-500V; ukumelana ≥10¹²Ω
55. Luthini uxinzelelo oluphezulu lokucinezela kwiibhodi eziguquguqukayo?

Uxinzelelo lwe-lamination yi-4-6MPa (i-polyimide substrate)
56. Yeyiphi indlela yokucubungula ububanzi bomngxuma obuncinci kwii-PCB eziguquguqukayo?

Ukubhola nge-laser (ubuncinci yi-0.1mm), ukukrola nge-plasma
57. Yeyiphi indlela yokuvavanya amaxolo e-copper foil kwiibhodi eziguquguqukayo?

Uvavanyo oluqhelekileyo lwe-IPC-TM-650 2.4.8, oluyi-90° lokuxobula
58. Ingakanani ukumelana nobushushu obumanzi beebhodi eziguquguqukayo?

Akukho kusilela emva kweeyure ezili-1000 kwindawo enobushushu obungama-85℃/85%
59. Iyintoni ukumelana nokungqubana konyango lomphezulu kweebhodi eziguquguqukayo?

Ukumelana nokungqubana komphezulu we-ENIG ≥ amaxesha angama-500 (ivili le-CS-10, uxinzelelo lwe-1000g)
60. Ungayila njani indawo yokudibanisa iibhodi eziguquguqukayo?

Yamkela uyilo oludibeneyo oluqinileyo noluguquguqukayo, ubude bendawo yoqhagamshelo ≥5mm
61. Ngowuphi umgangatho wovavanyo oluphantsi lwe-bending radius kwii-PCB eziguquguqukayo?

I-IPC-6013, akukho kuqhekeka emva kwemijikelo eli-1000 yokugoba
62. Lingakanani inani lamaxesha anokulungiswa kwiibhodi eziguquguqukayo?

Kucetyiswa ukuba kuphindwe kabini, ubuninzi bungadluli amaxesha amathathu
63. Zithini iimeko zovavanyo loxinzelelo lobushushu kwiibhodi eziguquguqukayo?

-55℃ ukuya ku +125℃ jikeleza izihlandlo ezili-100, imizuzu engama-30 ihlala ixesha ngalinye
64. Yintoni ubunzima bemaski yesolder kwiibhodi eziguquguqukayo?

Ubulukhuni bepensile ≥3H
65. Ithini i-angle yovavanyo lwe-flexure kwiibhodi eziguquguqukayo?

0-180°, igxile ekusebenzeni kokugoba kwe-90°
66. Ungayisombulula njani i-crosstalk yesiginali yeebhodi eziguquguqukayo?

Yongeza umaleko wokukhusela, lawula isithuba sokulandelela ≥3 ubukhulu bomgca
67. Bungakanani ububanzi beringi obuncinci be-pad annular ring kwii-PCB eziguquguqukayo?

I-0.15mm eqhelekileyo, ubuncinci i-0.1mm
68. Zithini iiparameter zenkqubo ye-electroless nickel kunye ne-gold plating kwiibhodi eziguquguqukayo?

Izinga lokufakwa kweNickel yi-1-2μm/h, izinga lokufakwa kwegolide yi-0.02-0.05μm/h
69. Lithini inani eliphezulu leeleya zeebhodi eziguquguqukayo?

Iileya eziqhelekileyo ezisi-8, ubuninzi obufikelela kwiileya ezingama-20
70. Ithini impembelelo yokumelana kweebhodi eziguquguqukayo?

Iyakwazi ukumelana nokukhawuleziswa kwe-50g, impembelelo yobude be-11ms
71. Ziziphi iindlela zokungaphumeleli kokudinwa ezigobayo zeebhodi eziguquguqukayo?

Imifantu yefoyile yekopolo (70%), ukuqhekeka kwesiseko (20%), ukwaphuka kwendawo yokudibanisa (10%)
72. Ungazibona njani amandla eebhodi eziguquguqukayo?

Sebenzisa umatshini wokuvavanya ukuxinana ngesantya se-100mm/min
73. Bungakanani ububanzi bomgca woonobumba obuncinci kwii-PCB eziguquguqukayo?

I-0.05mm eqhelekileyo, inkqubo encinci ukuya kuthi ga kwi-0.03mm
74. Yintoni ulawulo lwe-lamination temperature curve kwiibhodi eziguquguqukayo?

Izinga lokufudumeza yi-2-3℃/min, inqanaba lokubamba ubushushu yi-±5℃ yokuguquguquka
75. Yintoni uvavanyo lokunamathela olusetyenziswa phezu komphezulu kwiibhodi eziguquguqukayo?

Uvavanyo lweteyiphu ye-3M 600, akukho ngubo ixobukayo
76. Zithini iimfuno zokusingqongileyo zovavanyo lwe-flexure lweebhodi eziguquguqukayo?

Ubushushu 23±2℃, umswakama 50±5%
77. Ungayila njani isakhiwo sokunciphisa uxinzelelo lweebhodi eziguquguqukayo?

Yamkela uyilo lokunciphisa uxinzelelo olufana nee-serpentine traces kunye nee-slots ezimile okwe-U
78. Yintoni ubuncinci obusetyenziswa nge-annular ring width kwi-flexible PCBs?

I-0.15mm eqhelekileyo, ubuncinci i-0.1mm
79. Ingakanani i-solvent resistance ye-solder mask kwiibhodi eziguquguqukayo?

Isulwe nge-acetone izihlandlo ezili-10, akukho kuxobuka
80. Ithini i-engile yovavanyo lokugoba oluguquguqukayo kwiibhodi eziguquguqukayo?

Ukugoba okuqhelekileyo kwe-±90° nge-cyclic
81. Ungayisombulula njani ingxaki yokuguqulwa kobushushu beebhodi eziguquguqukayo?

Khetha ii-substrates ezine-coefficient ephantsi yokwandiswa kobushushu kwaye wonyuse imijelo yokusasaza ubushushu
82. Ingakanani i-humidity ephezulu yokusebenza kwiibhodi eziguquguqukayo?

Ukufuma kokusebenza kwexesha elide ≤90% RH
83. Ithini i-coefficient yobushushu be-dielectric constant kwiibhodi eziguquguqukayo?

I-Polyimide △εr/△T≈-0.001/℃
84. Yintoni ubukhulu bomgca obufunekayo ukuze kunyanyekelwe ii-PCB eziguquguqukayo?

±10% (inkqubo eqhelekileyo), ±5% (inkqubo echanekileyo kakhulu)
85. Ziziphi izinto ezikhethiweyo zezinto zokuqinisa iibhodi eziguquguqukayo?

FR-4, iziqinisi ze-polyimide, ubukhulu obuyi-0.1-0.5mm
86. Ziziphi iingongoma eziphambili zoyilo lokwenziwa kweebhodi eziguquguqukayo (i-DFM)?

Ziphephe ii-engile ezibukhali, lawula ukufana kwefoyile yobhedu, phucula iindawo ezigobileyo
87. Ingakanani i-corrosion resistance yonyango lomphezulu weebhodi eziguquguqukayo?

Uvavanyo lokutshiza ityuwa iiyure ezingama-48, akukho mhlwa
88. Yintoni imodeli yokuqikelela ubomi be-flexure kwiibhodi eziguquguqukayo?

Coffin-Manson equation: Nf=A (Δε)^(-m)
89. Ungayibona njani i-hole wall rough yeebhodi eziguquguqukayo?

Ijongwa nge-scanning electron microscope (SEM), Ra≤10μm
90. Lithini ixesha eliphezulu lokugoba kwi-PCBs eziguquguqukayo?

I-frequency yokugoba enamandla ecetyiswayo ≤2Hz
91. Yeyiphi indlela yokuvavanya ukunamathela kwimaski yesolder yeebhodi eziguquguqukayo?

Indlela yokusika (ISO 2409), ibakala 0 liyafaneleka
92. Yintoni umgangatho wamandla okubopha phakathi kwemigangatho yeebhodi eziguquguqukayo?

Umgangatho we-IPC ufuna ≥1.2N/mm
93. Ungabala njani ukulibaziseka kokudluliselwa kwesignali kwiibhodi eziguquguqukayo?

Ukulibaziseka = ubude be-trace ×√εr×0.167 (ns/cm)
94. Ungayila njani umaleko wobhedu wokusasaza ubushushu weebhodi eziguquguqukayo?

Ubukhulu bomaleko wobhedu ≥70μm, indawo yefestile evulekileyo ≥30%
95. Iyintoni ukumelana nokungcangcazela kweebhodi eziguquguqukayo?

Iyakwazi ukumelana nokungcangcazela kwe-10-2000Hz, i-2g yokukhawulezisa
96. Ingakanani ubungakanani obuncinci benqaku lovavanyo kwii-PCB eziguquguqukayo?

I-0.6mm eqhelekileyo, ubuncinci i-0.4mm
97. Yintoni uvavanyo lokumelana nokukrala konyango lomphezulu kwiibhodi eziguquguqukayo?

Uvavanyo lokukrala kweTaber, ivili le-CS-10, ubungakanani bokuguguleka
98. Luluphi ukhetho lobukhulu befoyile yobhedu kwindawo yokugoba yeebhodi eziguquguqukayo?

Kucetyiswa ukuba ufake ifoyile yobhedu eyi-9μm okanye eyi-12μm kwindawo egobileyo.
99. Ingakanani i-solder mask ekwaziyo ukumelana nobushushu obuphezulu kwiibhodi eziguquguqukayo?

-40℃ ukuya ku +150℃ umjikelo amaxesha angama-50, akukho kuqhekeka
100. Zeziphi izinto ezibalulekileyo zokujonga imithetho yoyilo (i-DRC) kwii-PCB eziguquguqukayo?

Ububanzi/isithuba somgca, ngobukhulu, irediyasi egobileyo, uyilo lokuqinisa

I-PCB eguquguqukayo

1. Ingakanani ububanzi/isithuba esincinci somgca we-PCB eguquguqukayo?

2. Zingaphi izihlandlo apho iibhodi eziguquguqukayo zinokumelana nokugoba?

3. Ingakanani iqondo lobushushu lokusebenza le-PCB eguquguqukayo?

4. Ungabala njani irediyasi yokugoba yeebhodi eziguquguqukayo?

5. Ingakanani isantya sokufunxwa kwamanzi se-PCB eguquguqukayo?

6. Zeziphi ii-substrates zebhodi eziguquguqukayo eziqhelekileyo?

7. Yintoni i-dielectric constant yeebhodi eziguquguqukayo?

8. Ungakuthintela njani ukwahlukana kwebhodi eguquguqukayo?

9. Zithini iinkcukacha zobukhulu befoyile yobhedu yebhodi eguquguqukayo?

10. Yintoni i-PCB eguquguqukayo enokumelana noxinano olukhulu lwangoku?

11. Ungavavanya njani ukusebenza kokugoba kweebhodi eziguquguqukayo?

12. Ziziphi iindlela zonyango lomphezulu kwiibhodi eziguquguqukayo?

13. Lithini iqondo lobushushu elifanelekileyo le-SMT soldering kwiibhodi eziguquguqukayo?

14. Ungayila njani indawo yokuqinisa iibhodi eziguquguqukayo?

15. Ingakanani ubukhulu bemaski yesolder kwi-PCB eguquguqukayo?

16. Ngaba iibhodi eziguquguqukayo zinokucutshungulwa ngee-vias ezingabonakaliyo/ezingcwatywe?

17. Ungakhetha njani phakathi kwe-polyimide kunye ne-polyester?

18. Zithini iimeko zokugcina iibhodi eziguquguqukayo?

19. Ungazisombulula njani iingxaki zebhodi eguquguqukayo?

20. Yintoni ubungakanani obuncinci be-PCB eguquguqukayo?

21. Ithini imilinganiselo yokuqina kwamaxolo kwiibhodi eziguquguqukayo?

22. Ngaba iibhodi eziguquguqukayo zingasetyenziswa kunye ne-wave soldering?

23. Ungayifumana njani i-EMI shield kwiibhodi eziguquguqukayo?

24. Yintoni i-dielectric loss tangent yeebhodi eziguquguqukayo?

25. Ingakanani i-PCB eguquguqukayo enokuthwala uxinzelelo olukhulu ngoomatshini?

26. Ungakuthintela njani ukwaphuka kwebhodi eguquguqukayo kwiindawo ezigobileyo?

27. Ithini ireyithingi ethintela ilangatye yeebhodi eziguquguqukayo?

28. Ngaba iibhodi eziguquguqukayo zinokudityaniswa ngamacala amabini?

29. Ingakanani ubude bomlinganiswa obuncinci kwi-PCB eguquguqukayo?

30. Indlela yokulinganisa ukungasebenzi kakuhle kweebhodi eziguquguqukayo?

31. Ithini i-coefficient ephezulu yokwandiswa kobushushu kwiibhodi eziguquguqukayo?

32. Yintoni ukunyamezelana kokubopha kweebhodi eziguquguqukayo?

33. Ungazisombulula njani iingxaki zokulibaziseka kwesignali kwiibhodi eziguquguqukayo?

34. Zeziphi izinto ezichaphazela ubomi be-flexible PCB flex?

35. Bungakanani ubukhulu beplati yobhedu engena-electron kwiibhodi eziguquguqukayo?

36. Ngaba iibhodi eziguquguqukayo zingenza ukugoba kwe-3D stereoscopic?

37. Ithini imigangatho yovavanyo lwetyuwa yokutshiza iibhodi eziguquguqukayo?

38. Ingakanani ubungakanani obuncinci bephedi ye-PCB eguquguqukayo?

39. Ungayiphucula njani indlela yokusasaza ubushushu kwiibhodi eziguquguqukayo?

40. Ithini i-standing voltage yeebhodi eziguquguqukayo?

41. Ingakanani imida yerediyasi egobileyo yeebhodi eziguquguqukayo?

42. Ungakuthintela njani ukudumba ngexesha lokutywina iibhodi eziguquguqukayo?

43. Iyintoni imfuneko yoburhabaxa bomphezulu kwi-PCB eguquguqukayo?

44. Yintoni umgangatho wovavanyo lokunyibilikisa iibhodi eziguquguqukayo?

45. Ingakanani isantya sovavanyo lokugoba oluguquguqukayo kwiibhodi eziguquguqukayo?

46. ​​Ungayila njani indawo yokugoba yeebhodi eziguquguqukayo?

47. Ingakanani i-convection density ephezulu ye-flexible PCB?

48. Zeziphi iindlela zonyango ezingangenisi manzi kwiibhodi eziguquguqukayo?

49. Yintoni ulawulo lwexesha le-lamination kwiibhodi eziguquguqukayo?

50. Yintoni umjikelo wovavanyo lokudinwa oluguquguqukayo kwiibhodi eziguquguqukayo?

51. Ithini umda woyilo lobubanzi bomgca obuncinci kwi-PCB eguquguqukayo?

52. Zithini iimeko zokuphilisa i-inki yemaski yebhodi eguquguqukayo?

53. Ingaba i-dielectric constant yeebhodi eziguquguqukayo iyatshintsha rhoqo?

54. Ungavavanya njani ukumelana nobushushu beebhodi eziguquguqukayo?

55. Luthini uxinzelelo oluphezulu lokucinezela kwiibhodi eziguquguqukayo?

56. Yeyiphi indlela yokucubungula ububanzi bomngxuma obuncinci kwii-PCB eziguquguqukayo?

57. Yeyiphi indlela yokuvavanya amaxolo e-copper foil kwiibhodi eziguquguqukayo?

58. Ingakanani ukumelana nobushushu obumanzi beebhodi eziguquguqukayo?

59. Iyintoni ukumelana nokungqubana konyango lomphezulu kweebhodi eziguquguqukayo?

60. Ungayila njani indawo yokudibanisa iibhodi eziguquguqukayo?

61. Ngowuphi umgangatho wovavanyo oluphantsi lwe-bending radius kwii-PCB eziguquguqukayo?

62. Lingakanani inani lamaxesha anokulungiswa kwiibhodi eziguquguqukayo?

63. Zithini iimeko zovavanyo loxinzelelo lobushushu kwiibhodi eziguquguqukayo?

64. Yintoni ubunzima bemaski yesolder kwiibhodi eziguquguqukayo?

65. Ithini i-angle yovavanyo lwe-flexure kwiibhodi eziguquguqukayo?

66. Ungayisombulula njani i-crosstalk yesiginali yeebhodi eziguquguqukayo?

67. Bungakanani ububanzi beringi obuncinci be-pad annular ring kwii-PCB eziguquguqukayo?

68. Zithini iiparameter zenkqubo ye-electroless nickel kunye ne-gold plating kwiibhodi eziguquguqukayo?

69. Lithini inani eliphezulu leeleya zeebhodi eziguquguqukayo?

70. Ithini impembelelo yokumelana kweebhodi eziguquguqukayo?

71. Ziziphi iindlela zokungaphumeleli kokudinwa ezigobayo zeebhodi eziguquguqukayo?

72. Ungazibona njani amandla eebhodi eziguquguqukayo?

73. Bungakanani ububanzi bomgca woonobumba obuncinci kwii-PCB eziguquguqukayo?

74. Yintoni ulawulo lwe-lamination temperature curve kwiibhodi eziguquguqukayo?

75. Yintoni uvavanyo lokunamathela olusetyenziswa phezu komphezulu kwiibhodi eziguquguqukayo?

76. Zithini iimfuno zokusingqongileyo zovavanyo lwe-flexure lweebhodi eziguquguqukayo?

77. Ungayila njani isakhiwo sokunciphisa uxinzelelo lweebhodi eziguquguqukayo?

78. Yintoni ubuncinci obusetyenziswa nge-annular ring width kwi-flexible PCBs?

79. Ingakanani i-solvent resistance ye-solder mask kwiibhodi eziguquguqukayo?

46. Ungayila njani indawo yokugoba yeebhodi eziguquguqukayo?