0.8mm Thick Electronic Scale Fr4 PCB / 94V0 Electronic printed circuit board assembly

Quick detail:

Specification:

Electronic Scale PCB With 0.8mm Thickness 94V0 Electronic Board Green Soldermask White Silkscreen,

FR - 4 epoxy glass fiber cloth substrate, based on epoxy resin as binder, with electronic level glass fiber cloth as reinforcing material of substrate. Its bonding sheet and thin copper-clad r.p. panel and inner core is an important base material in production of multilayer printed circuit board,This kind of product is mainly used for double-sided PCB, dosage is very large. Epoxy glass fiber cloth substrate, the most widely used model for FR - 4, in recent years because of the electronic product installation technology and PCB technology development needs, appeared high Tg FR - 4 products.

General FR-4 differs from high Tg FR-4: in the hot state, especially in the heat after moisture absorption, the mechanical strength of the material, dimensional stability, adhesion, water absorption, thermal decomposition, differences in thermal expansion and other various conditions, high Tg products significantly better than conventional PCB substrate material.

What is Immersion Gold: The method of reduction reaction by chemical oxidation coating layer, generally thicker, a chemical nickel gold layer deposition method can achieve a thicker layer of gold, usually called Immersion Gold.

Immersion Gold is gold-plated crystal structure than the more dense and difficult to produce an oxide.

As more and more dense wiring, line width, spacing has to 3-4MIL. Gilded gold is prone to short-circuiting. Only nickel immersion gold plate gold on the pad, it will not yield to the gold shorts.

Parameter:

UL 94: Test for Flammability of Plastic Materials for Parts in Devices and Appliances
Level test program are as follows:
1) HB Grade: horizontal burning test Horizontal Burning Test
2) V0-V2 level: vertical flame test Vertical Burning Test
3) 5VA / 5VB: 5V-fire test 500w (125 mm) Vertical Burning Test
4) RP Class: radiant panel flame spread testing Radiant Panel Flame Spread Test
5) VTM0-VTM2: thin material vertical combustion test Thin Material Vertical Burning Test
6) HF1-HF2: foam level material combustion test Horizontal Burning Foamed Material Test