pro-bond 20FG2 VT-8728G2 RCF

UL Approval: E214381 Version: 20/09/2024

Precautions in Handling

Storage Condition and Shelf Life

RCF
Storage Condition Temperature Below 23℃ (73℉) Below 5℃ (41℉)
Relative Humidity Below 55% /
Shelf Life 3 Months 6 Months

•  The RCF should be moved immediately into a controlled environment upon receipt.

•  Any opened RCF package should be resealed with tape after use, and returned to a controlled environment. A FIFO inventory system is recommended.

 

Product Handling & Press Process Flow

pro-bond 20FG2 RCF_Press Process.jpg

Press Parameters

1. Heating rate (Rate of Rise) of material [Material Temperature]: Programmable Press:≥3.0ºC/min(5ºF/min ManualPress:3~6ºC/min(5~10ºF/min)

2. Curing Temperature& Time:>90min at more than 190ºC(374ºF) [Material Temperature].

3. Full Pressure: ≥420psi. It’s a guideline that full pressure is started before70ºC of material temperature.

4. Vacuuming should be continued until over 140ºC(284ºF)[Material Temperature]

5. Cushion for Pressure evenness is needed. (Sheets of kraft paper etc.)

pro-bond 20FG2 RCF_Hot Cycle.jpg

Typical Drilling Conditions

Diameter (mm) Spindle Speed (KRPM) Feed Rate (m/mm) Retract Rate (m/mm) Hit Count
0.15 75 1 7.6 250
0.20 73 2.5 7.6 300
0.30 75 2.7 7.6 400
0.40 75 2.8 10.2 500
0.50 70 2.8 25.4 500

1. Drilling parameters should be adjusted depending on hole size, layer count, panel thickness, stack count and stack height etc; 2. Please adjust drilling parameters after checking qualities of through holes; 3. Entry board FR4 30mil; Exit board FR4 20mil;1panel/Stack

Desmear Process

If panels have been exposed to moisture, bake the boards at 105ºC-120ºCfor one or more hours to drive out moisture. The desmear Plasma time is typically half that of standard FR4/epoxy times because VT-8728G2 RCF resin system tends to etch back very quickly. Permanganate desmear IS NOT RECOMMENDED and has been shown to be very aggressive on VT-8728G2 RCF resulting in excessive etchback. This is due to the high silica filler content and thermoset content in the resin system.

Downloads for pro-bond 20FG2 (VT-8728G2 RCF)