Technical Paper

Journal of the HKPCA / Issue No. 55 / 2015/ Q116

The Analysis Of high ratio Via Hole OpenThe Analysis Of high ratio Via Hole OpenThe Analysis Of high ratio Via Hole Open

Abstract:

Keywords:

In this paper, an aspect ratio of 5:1 is

not open hole electric vibrator to produce white

ho l e cause s the theo re t i c a l ana l y s i s and

experimental verif ication. Conf irmed the aspect

ratio of 4:1 or more holes developing due to

residual syrup when developing or bubbles,

drawing power when not open electric vibrator

developing syrup and bubbles cannot be discharged

resistance caused by copper and tin-plated power

is not on, the white hole after etching.

via hole open; photograph potions;

vestigial; electric vibration

(5 1)

4 1

1

1-1

Technical Paper

17www.hkpca.org

1-1 1-2 1-3

1. 2013.03.02 x 66PNLS 8.10%

2. 1.575mm 0.3mm 5 1 6 1 1-1

3. 1-2 1-3

2

2.1 NPMG1485

2-1 2-2 2-3

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1

3. 2-1

Technical Paper

Journal of the HKPCA / Issue No. 55 / 2015/ Q118

4.

5. 1-1 ( 2-4)

6. 1-1

7. 5 1 6 1

2.2

( )

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x (

)

2-4

2-5

( 20-45 C) 2400-

2800mm/min

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Technical Paper

19www.hkpca.org

3

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2. (1500mm/min)

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9. 10.

Technical Paper

Journal of the HKPCA / Issue No. 55 / 2015/ Q120

3.2.1 1

1. (S1141 42x48

1.6mm H/HOZ

406.4x

337.82mm)

2. (

0 . 2 m m 0 . 2 5 m m

0.3mm 0.4mm

8 1

6 1 5 1 4 1)

3. 4.

8. ( 13um

4um)

7.

(

pad

)

6. 5. (5um)

2231

3.2.2 2

9. 10.

1. (S1141 42x48

1.6mm H/HOZ

406.4x

337.82mm)

2. (

0 . 2 m m 0 . 2 5 m m

0.3mm 0.4mm

8 1

6 1 5 1 4 1)

3. 4.

8. ( 13um

4um)

7.

1.5m/min

(

78-

85 C)O

6. 5. (5um)

2231

Technical Paper

21www.hkpca.org

3.2.3 3

9. 10.

1. (S1141 42x48

1.6mm H/HOZ

406.4x

337.82mm)

2. (

0 . 2 m m 0 . 2 5 m m

0.3mm 0.4mm

8 1

6 1 5 1 4 1)

3. 4.

8. ( 13um

4um)

7.

(

pad

)

6. 5. (5um)

2231

3.2.4 4

9. 10.

1. (S1141 42x48

1.6mm H/HOZ

406.4x

337.82mm)

2. (

0 . 2 m m 0 . 2 5 m m

0.3mm 0.4mm

8 1

6 1 5 1 4 1)

3. 4.

8. ( 13um

4um)

7.

1.5m/min

(

78-

85 C)O

6. 5. (5um)

2231

Technical Paper

Journal of the HKPCA / Issue No. 55 / 2015/ Q122

4

4.1 1

7

4 1 5 1 6 1 27 8 1 44

1.

2.

6:16:1 8:18:1

4-1 4-2

4-3 4-4

4-2 4-4

x

8

4 1 12 5 1 75 6 1 68 8 1 88 243

4 1 243

4:14:1 5:15:1

50x50x50x50x 50x50x50x50x

200x200x200x200x 200x200x200x200x

500x500x500x500x 500x500x500x500x

4-5 4-6

4-7 4-8

4-9 4-10

Technical Paper

23www.hkpca.org

Technical Paper

Journal of the HKPCA / Issue No. 55 / 2015/ Q124

6 1 8 1

6:16:1 8:18:1

50x50x50x50x 50x50x50x50x

200x200x200x200x 200x200x200x200x

500x500x500x500x 500x500x500x500x

4-11 4-12

4-13 4-14

4-15 4-16

4-17 4-18

4-19 4-20

4-21 4-22

Technical Paper

25www.hkpca.org

4.2 2

9

6 1 5 8 1 1 , 4:1 5:1 6

6:16:1 8:18:1

50x50x50x50x 50x50x50x50x

200x200x200x200x

500x500x500x500x

200x200x200x200x

500x500x500x500x

Technical Paper

Journal of the HKPCA / Issue No. 55 / 2015/ Q126

4.3 3

4.4 4

8

8

8 8 8 9

4 1 12

5 1 75

6 1 68

8 1 88

243

4 1 0

5 1 0

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0

5

6

1.

2. 4 1

( 243 6 )

20-60mm/s >200 m 30s 20s 5~6cm

2-5 /h

µ

Technical Paper

27www.hkpca.org

7 ( )

( )

1.

2.

3.

4. /

5.

6. PCB

7. PCB