Standard Multilayer PCB’s – Hi-Q Electronics Pvt. Ltd.

Design Rules for standard Double sided / Multilayer PCB’s

ITEM	STANDARD INDUSTRIAL	ADVANCED INDUSTRIAL	SPACE, DEFENSE & AEROSPACE	MERGED PANEL JOB
Default Standard	IPC CLASS 2	IPC CLASS 2	IPC CLASS 3 / 3A	IPC CLASS 2
Layer count	Upto 38 layers	Upto 38 layers	Upto 32 layers	2 & 4 layer only
Materials	Complete range as per materials list	Complete range as per materials list	Complete range as per materials list	High Tg FR4 only
Core / Foil construction	Both	Both	Both	Foil Only
Inner layer Line Width / Spacing	89 / 89 microns	76 / 76 microns	89 / 89 microns	100 / 100 microns
Minimum Inner layer Base copper start	18 microns	18 microns	18 microns	35 microns
Maximum Inner layer Base copper start	105 microns	210 microns	70 microns	35 microns
Outer layer Line Width / Spacing	89 / 89 microns without Cap plating , 125/125 microns with Cap plating	89 / 89 microns without Cap plating , 100/100 microns with Cap plating	89 / 89 microns without Cap plating , 100/100 microns with Cap plating	100 / 100 microns without Cap plating , Cap plating not offered
Minimum Outer layer Base copper start	12 microns	9 microns	12 microns	18 microns
Maximum Outer layer Base copper start	105 microns	210 microns	70 microns	18 microns
Thinnest core (Rigid High Tg 170 FR4) – excluding copper foil	0.1 mm	0.1 mm	0.1 mm	0.1 mm
Minimum Hole Diameter / Minimum pad size /PCB thickness	0.15/0.45/ 1.6 mm	0.15/0.45/ 1.6 mm	0.20/0.61/2.4 mm	0.20/0.45/1.6 mm
Mechanical blind and buried drills	Offered / contact Hi-Q stackup team	Offered / contact Hi-Q stackup team	Offered / contact Hi-Q stackup team	Not offered
Solder Mask pad size enlarged with respect to copper pad	0.051 mm	0.026 mm	0.051 mm	0.051 mm
Solder mask color	Green, Blue, Red Teal	Green, Blue, Red, Teal	Green, Other Mask upon request	Green Only
Surface Finish	ENIG/ Silver/ Leaded HASL Hard Gold	ENIG/ Silver/ Leaded HASL Hard Gold	ENIG/ Silver/ Leaded HASL Hard Gold	ENIG/ Silver/ Leaded HASL Hard Gold
Controlled Impedance	YES +/- 10% TDR Measured	YES +/- 10% TDR Measured	YES +/- 10% TDR Measured	YES +/- 10% TDR Measured Approve from Hi-Q first
Legend	White	White	White	White
Automated Serial # printing	Optional	Optional	Yes	Optional – upon approval from Hi-Q first
Back Drilling – tolerance	0.4 mm from landing layer	0.4 mm from landing layer	0.4 mm from landing layer	Not offered
BBT Testing	Flying probe tested against Netlist	Flying probe tested against Netlist	Flying probe tested against Netlist	Flying probe tested against Netlist
Via filling	Type VI	Type VI	Type IV and Type VI	Type VI
Via filling with Cap plating including via on pad	Type VII	Type VII	Type VII	Not offered