被動元件用玻璃粉

產品說明

Passivation Glass

Zinc-borosilicate passivation glasses are applicable for use in manufacturing highly reliable devices because no change occurs on surface charge density in BT treatment when applied with DC bias and heating.

Lead silicate and lead borosilicate passivation glasses have excellent chemical durability and can be applied to transistors,thyristors and diodes with nickel-plated electrodes.

Various kinds of particle sizes are available upon request.

Properties/Glass Code GP-014 GP-031 GP-5210 GP-180 GP-190 GP-200
Grind type*1 350 350 350 S S S
Coefficient of thermal expansion 30-300℃ ×10-7/K 43 36 33 44.5 43.5 44
Transformation point ℃ 550 535 550 590 620 595
Softening point ℃ 650 635 650 775 810 780
Density ×103kg/m3 3.78 3.93 3.84 3.87 3.81 3.78
Alkali content Na2O ppm ≦20 ≦20 ≦20 ≦30 ≦30 ≦30
K2O ppm ≦10 ≦10 ≦10 ≦10 ≦10 ≦10
Li2O ppm ≦5 ≦5 ≦10 ≦10 ≦10 ≦10
Application (Reverse breakdown voltage level)*2 Low Low High Medium High Medium
Surface charge density : NFB*3 ×1011/cm2 0-+1 0-+1 +6-+7 +7-+8 +15-+16 +6-+7
Glass type ZnO•B2O3•SiO2 ZnO•B2O3•SiO2 •PbO PbO•SiO2•Al2O3
 
Properties/Glass Code GP-230 GP-605 GP-620 GP-350 GP-370 GP-380 GP-390
Grind type*1 S S S S S S S
Coefficient of thermal expansion 30-300℃ ×10-7/K 41.5 44 43 46.5 42 44.5 43
Transformation point ℃ 610 590 620 470 475 535 540
Softening point ℃ 830 790 810 645 680 740 740
Density ×103kg/m3 3.58 3.84 3.76 3.53 3.32 3.61 3.54
Alkali content Na2O ppm ≦30 ≦30 ≦30 ≦30 ≦30 ≦30 ≦30
K2O ppm ≦10 ≦10 ≦10 ≦10 ≦10 ≦10 ≦10
Li2O ppm ≦10 ≦10 ≦10 ≦10 ≦10 ≦10 ≦10
Application (Reverse breakdown voltage level)*2 Medium High High Low Medium Medium High
Surface charge density : NFB*3 ×1011/cm2 +7-+8 +11-+12 +14-+15 +2-+3 +5-+6 +6-+7 +14-+15
Glass type PbO•SiO2•Al2O3 PbO•B2O3•SiO2•Al2O3
 

















*1  350 : Dmax 44um, D50 16um S: Dmax 44um, D50 7.5um
*2  Selection guide depending on your device level.
*3  Silicon side
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