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TOB-III is a grade 3 (HTE) copper foil with a TOB treatment designed for multilayer constructions
and is fully compatible with all epoxy resin systems. Performance benefits include:
- •Zinc barrier layer promotes long term bond strength and resists pink ring.
- •HTE characteristics eliminate inner layer foil cracking.
- •Provides consistency in etching and drilling.
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TOB-III Product Data Sheet (Std)
(pdf) 
TOB-III Product Data Sheet (Metric)
(pdf)
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Typical Matte and Drum Side Images:
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Treated (Matte) Side TOB-III (1/2 oz)
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Drum Side TOB-III (1/2 oz)
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High Temp Elongation @180ºC |
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Roughness -Ra
Untreated (Drum) Side |
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Roughness -Rz
Treated (Matte) Side |
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B Condition Peel
Epoxy Tg 170ºC
Treated (Matte) Side |
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*Note: Nominal thickness is determined by area weight. Actual measured thickness may be slightly higher due to matte side topography.
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