孔口阻焊显影不净原因分析及论证

18 Journal of the HKPCA / Issue No. 24 / 2007/ Q2 w w w . h k p c a . o r g Technical Paper SYE Yuan Jiwang PCB HDI PCB PCB PCB PCB 1 2 PCB 1 S/M 2 2. 3. 1 PCB 2 OSP PCB OSP 3 ( S/M S/M S/M 3 ) 3.1 � 3 3.2 8 8 1 4 21 6 5 3 8 7 ( ) 1 B2 70 /120min( 60min) 5 5 2(B1) 80 /60min( 70 ) 5 5 3(B3) 5 5 4(C2) 6H 0.5-2.0H 5 5 5/6(C1) / 24H( 0.5-3.0 5 5 7(E) 1H( 63 ) 5 5 7(F) 1H( 75 ) 5 5 8(D) 2H 5 5 (A) 5 5 / / / / / / / / 1 4.1 4.1.1 20ml/Kg 1&5H PCB 160L 4. � � 19Journal of the HKPCA / Issue No. 24 / 2007/ Q2 w w w . h k p c a . o r g Technical Paper � � / 5ml+DI 10ml 60min. a) b) 63 68 28 30 8 11 70 4 5 / 5 10mlDI :63-68% :28-30 4 5 :8-11% :70 5ml/ 5ml 10mlDI 4.1.2 1 6 7 2) 1H 25min 8 9 6 7 8 OK!OK! 20 Journal of the HKPCA / Issue No. 24 / 2007/ Q2 w w w . h k p c a . o r g Technical Paper 1 H (OH ) NH NH4 HCL CI 2 1 + + - - 3 4.1.3 � HCL CI 2 - � 9 25 21Journal of the HKPCA / Issue No. 24 / 2007/ Q2 w w w . h k p c a . o r g Technical Paper 3) 10 11 10 11 PadPad PH 1 ( )2.5ml+10 9-10 10min 60min 2 ( )5ml+10 11-12 10min 60min 1 ( )2.5ml+10 4 5 10min 30min 60min 2 ( )5ml+10 2 3 10min 30min 60min/180min 20min 20min 1 25min 20min 2 3 3 65 28 30 2 22 Journal of the HKPCA / Issue No. 24 / 2007/ Q2 w w w . h k p c a . o r g Technical Paper 2 � � 12 60min 1 60min 10min 20min 2 20min 60min 60min 1 H (OH ) 2 3 4.2 + - 5 5.1 C==C COOH H COOH 12 OH NH4 13 OH NH COOH + - - + 4 12 COOH O C CH R C OH O C O C CH2 O C CH R C OH O C O C C O C CH R C O O C O C CH2 n R3 COOH O C C m O C H + O C CH R C OH O C O C CH2 O C CH R C OH O C O C C O C CH R C O O C O C CH2 n R3 COOH O C C m O C H + 23Journal of the HKPCA / Issue No. 24 / 2007/ Q2 w w w . h k p c a . o r g Technical Paper O C C m O C O C C m O C O C C m O C O H � � H OH + - 6. A B 2) 3 13 A B 1 Panel J4 30 65 :28 30 65 :28 30 8-11 :70 8-11 :70 65 :28 30 65 :28 30 / 10-15 :30 60min/2panel S1 60min/2panel J1 60min/2panel S2 60min/2panel J2 60min/2panel S3 60min/2panel J3 60min/2panel J4 3 3 24 Journal of the HKPCA / Issue No. 24 / 2007/ Q2 w w w . h k p c a . o r g Technical Paper 4 S1 A J1 A B S2 A J2 A B S3 A J3 ) A B / / (J4#) A B # ( #) # ( #) # ( # B B B / B A B A Undercut 14 15 B 16 10-15 14 B 15 A A A 16 7. 8. 9. H OH 0.5- 2.0H PCB PCB 1. C.M. . . .1989 2. . . .1999 3. . .. 2003 4. . . .2005.2 5. . . 2004.12 6. TAMURA Taiyo GOO- AMC Eternal + - H OH + -