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Process project Content Conventional Illustration
Cutting and splicing Cutting and completing plate thickness Number of layers 2-6 layers (layered board)
2-10 layers (soft hard bonding board)
Floors 1-8 (soft board)
Cutting and splicing dimensions 250*(220~400)mm
500*(220~400)mm
Complete board size (maximum) 480mm*380mm
Complete board size (minimum) 5mm*8mm
Maximum sheet thickness (double-sided copper) 0.3mm
Minimum sheet thickness (single-sided copper content) 0.05mm (finished product)
Other auxiliary materials Specification of pressure-sensitive adhesive material Pressure sensitive adhesive:
30/50/100/130um
Specification of thermosetting adhesive material Thermosetting adhesive:                   12.5/15/25/40/50um
PI reinforcement (excluding adhesive) material specifications PI:1.0 - 13mil
PET reinforcement (excluding adhesive) material specifications White: 0.05-0.25mm
Transparent: 0.025-0.25mm
FR-4 reinforcement (excluding adhesive) material specifications FR-4:≥50um
Other types of reinforcement materials Stainless steel, aluminum plate, nickel steel sheet according to customer requirements
Common board materials Material type Single and double-sided adhesive
Single and double-sided adhesive free and halogen-free
Single and double-sided adhesive without halogen
Copper thickness of substrate (electrolytic or rolled) 1/3oz  1/2oz  1oz  2oz
Substrate PI 0.5mil,0.7mil,0.8mil, 1mil,2mil

working procedure project Content Conventional Illustration
Working edge size Double sided tin deposition, gold deposition OSP、 Tinplate TD direction 10/6mm, MD direction 6mm
(The clamp is fixed on the TD edge, 10mm)
Single and double-sided electric gold plates (250mm direction) 7mm
Single sided tin deposition, gold deposition, OSP board Long side/short side ≥ 6mm
TFT products with fine fingers facing outward Long/short side ≥ 7mm, and the clamping edge of TD side ≥ 10mm
Multi layer soft hard composite board Long side/short side ≥ 12mm
drill hole Drilling tolerance Positioning tolerance One drilling: ± 0.05mm
Secondary drilling: ± 0.1mm
Laser drilling (minimum blind hole) Ø0.08mm
Laser drilling (minimum through-hole) Ø0.05mm
Mechanical drilling aperture (minimum) Ø0.1mm
Mechanical drilling aperture (maximum drill bit) Ø6.30mm
Drilling hole (minimum) Ø0.60mm
Finished hole diameter tolerance (plated through-hole) ±2mil(±0.05mm)
Finished hole diameter tolerance (non plated through-hole) ±1mil(±0.025mm)
Metalization of holes Black hole PTH
/
electroplate
Minimum average copper thickness of PTH hole wall Double sided panel: 10-18um
Module board (TFT): 8-15um
Soft hard combination board: ≥ 20um
Soft board multi-layer layered board: ≥ 16um
Control according to customer's special requirements
Producible size 250 or 500 * (220-400) mm
Graphic circuit Minimum line width/line gap of film Minimum hole ring (calculated within the inner layer of multi-layer board) Limit 0.075mm (single and double-sided panels)
Conventional 0.1mm
Safety value 0.12mm
Unilateral 0.15mm (3, 4 layers), safety value 0.2mm
Unilateral 0.25mm (5, 6 layer board), safety value 0.3mm
Unilateral 0.35mm (6 or more layers)
Minimum hole ring (outer layer of multi-layer board) Unilateral 0.1mm, safety value 0.15mm

Process project Content Conventional Illustration
Graphic circuit Minimum line width/line gap of film Minimum distance from NPTH hole to line 0.1mm, safety value 0.2mm (drilling)
0.15mm, safety value 0.25mm (steel die punching)
Minimum line width/gap of 1/3 OZ copper base 0.05/0.04mm (line compensated)
Minimum line width/gap of 1/2 OZ copper base 0.06/0.07mm (line compensated)
Minimum line width/gap of 1OZ bottom copper Single panel: 0.07/0.08mm (line compensated)
Double sided board: 0.08/0.09mm (compensated circuit)
Minimum line width and spacing of the outer layer of the soft hard composite board 0.11/0.09mm (line compensated)
Minimum line width/line gap of multi-layer soft board 0.09/0.07mm (line compensated)
Etching compensation (overall): 1 OZ copper 0.03-0.04mm
Etching compensation (overall): 1/2 OZ copper 0.02-0.03mm
Etching compensation (overall): 1/3 OZ copper 0.015-0.02mm
Note: All independent lines shall be increased by 0.01-0.02mm (overall) on the basis of overall compensation; Minimum line spacing of 0.04mm
Dry film Alignment tolerance ±0.05mm
Deviation of two-sided graphics (alignment overlap) ±0.05mm
Minimum Grid (Area) 0.2 × 0.2mm (preferably at a 45 ° angle)
Minimum grid line width/line spacing 0.15/0.15mm
Solder mask Solder mask Minimum distance from window to solder pad on one side 0.05mm, safe value 0.075mm
Minimum width of green oil bridge 0.1mm
Green Oil Bridge Cover Line with Large Single Side 0.05mm, safe value 0.075mm
Green minimum window Ø 0.025mm, safety value Ø 0.04mm
Ink thickness ≥ 10um (usually 9-25um,
Guanpin thermosetting oil: 9-15UM
Minimum negative letter height/minimum line width for green oil 1.0/0.15mm
character character Minimum line width for positive text 0.1mm, safe value 0.13mm
Minimum line width for negative text 0.125mm, safety value 0.15mm
Minimum height of text 0.8mm
Minimum width of text 0.8mm

Process project Content Conventional Illustration
character Minimum distance from characters to solder pads 0.15mm, safety value 0.25mm
Minimum line width of character line segments (non text) 0.1mm, optimal value 0.2mm
The minimum distance between character blocks and solder pads on one side ≥0.2mm
Minimum distance from characters to appearance 0.25mm
Carbon oil Minimum carbon oil width/carbon oil spacing 0.25/0.3mm
Minimum distance from the outer edge 0.3mm
Carbon oil resistance tolerance (3000 Ω high resistance) ±400Ω
ACP
Conductive adhesive
ACP thickness range 15-25um
Number of conductive particles > 30 pieces/mm ²
punching punching Drilling accuracy tolerance ±1mil(0.025mm)
Fit together Cover film processing Minimum drilling hole for covering film window opening Ø 0.4mm (drilling processing),
Safety value Ø 0.7mm
Minimum square window for covering film windows 0.6 × 0.6mm (steel mold processing)
0.5 × 0.5mm (precision die processing)
Minimum window spacing for covering film 0.5mm (precision mold), 0.2mm (laser engraving)
0.15mm (ordinary drilling)
0.2mm (slot, cross COV drilling bridge)
Minimum aperture for cutting cover film 0.7mm
Minimum aperture for cutting thermosetting adhesive and double-sided adhesive 1.0mm
Minimum window spacing for cutting cover film with cutting machine 0.15mm
Minimum window for cutting cover film with cutting machine 0.6*0.6mm
Minimum punching of covering film 0.6mm (steel mold processing)
Double sided adhesive window opening is larger than single-sided FPC 0.3-0.5mm
Distance from the edge of the cover film window to the edge of the solder pad or circuit Products below 250 × 230mm: 0.05mm (safety value 0.1mm) Products above 250 × 230mm: 0.075mm (safety value 0.15mm)
Alignment tolerance of covering film and auxiliary materials ± 0.15mm, safety value ± 0.2mm
Excess glue amount of covering film (unilateral) Conventional 0.08-0.12mm
Limit 0.03mm (TPX compression)
Electromagnetic film SF-PC5000/5500/5900 black electromagnetic film minus release film thickness 22um/22um/9um

Process project Content Conventional Illustration
Fit together Electromagnetic film SF-PC1000 silver electromagnetic film minus release film thickness 32.1um
TSS200/TSS100 black electromagnetic film 22um/12um
electroplate surface treatment Nickel plating thickness 2.54-9um (conventional value 2-6um)
Plating thickness 0.025-0.2um
(Normal value 0.025-0.075um)
Nickel deposition thickness 1-6um (conventional 1-3um or 2-5um)
Thickness of gold deposition 0.025-0.125um
(Normal value 0.025-0.075um)
Tin plating thickness 3-10um
Tin deposition thickness 0.6-1.2um
OSP thickness 0.3-0.5um
Control according to customer's special requirements
Punching and cutting Exterior cutting Outline Tolerance ± 0.05mm (high-precision mold)
± 0.07mm (precision mold, etching knife mold)
± 0.1mm (ordinary steel mold, simple steel mold)
± 0.2mm (ordinary die)
Outer corner dimension (finger center to edge) tolerance ± 0.05mm (high-precision mold)
± 0.07mm (precision mold making)
± 0.1mm (for ordinary steel mold production and etching knife mold)
Sharp corners of the appearance are allowed to use transition rounded corners R≥0.20mm
The minimum distance between the center of the positioning hole and the outer edge 2mm
Minimum distance between units ≥ 0.5mm (suitable for jumping, usually 1-2mm)
Boundary distance cutting line ≥ 2.0mm (die), ≥ 2.5mm (handmade)
Positioning hole (Ø 2.0mm) center distance from cutting line ≥ 2.5mm (die), ≥ 3mm (handmade)
Minimum diameter of semi-circular hole 0.25mm, safety value 0.3mm
Minimum distance from circuit to board edge 0.40mm (hand cut)
0.3mm (ordinary knife mold)
0.15mm (steel mold, etching knife mold)
0.1mm (precision die)

Process project Content Conventional Illustration
Punching and cutting Exterior cutting The minimum distance from the circuit to the board edge is 500mm, and there is no gap in the board arrangement 0.3mm (die)
V-cut
Milling plate V-CUT
Soft hard combination board Diameter of gong and knife Minimum Ø 0.8mm (minimum inner arc radius R0.4mm)
Pipe position hole NPTH hole Ø 1.0mm
tolerance Milling plate peripheral tolerance ± 0.13mm
Minimum distance from circuit to board edge 0.2mm (gong edge)
FR4 with the thinnest total thickness of V-CUT 0.3mm
The shallowest depth of V-CUT 0.08mm (oblique angle: 45 °)
test Flying needle test Minimum line width/spacing for flying needle test 0.05/0.05mm
Maximum height difference of test points 1.5mm
Finished product thickness Finished product thickness Finished product thickness tolerance (0.05-0.10mm) ±0.015mm
Finished product thickness tolerance (0.11-0.2mm) ±0.02mm
Finished product thickness tolerance (0.21-0.40mm) ±0.03mm
Multi layer soft hard composite board Based on the specific layout structure
impedance Impedance tolerance Single point impedance tolerance ﹢/-10%
Differential impedance tolerance ﹢/-10%
Board type Double sided panel (100/-10 ohms) 1MIL 1/3OZ non adhesive material
1.5MIL 1/3OZ non adhesive material
1/2MIL 1/3OZ with adhesive material
Multi-layer board Match according to actual materials
SMT SMT Anti static level class a
Dust free grade 100000 level
Minimum component Conventional 0201, Extreme 01005
Minimum component spacing Conventional 0.3mm, maximum 0.2mm
Minimum IC pitch 0.3mm
Minimum connector pitch 0.3mm
Minimum BGA pitch 0.3mm
Maximum layout size Conventional 250 * 240mm limit 330 * 240mm
Maximum board surface step Conventional ≤ 0.3mm Limit ≤ 0.35mm
Printing solder paste type Lead free and halogen-free
Thickness of solder paste printing 120-180um

Process project Content Conventional Illustration
SMT SMT Minimum tinned area 0.3*0.25mm
Solder height Component height above 1/4
Tin height on component pins Greater than 1/2 of the component pin
IMC alloy layer thickness 1-3um
Number of temperature zones for hot air reflow soldering 10 temperature zones
Reflow soldering temperature Maximum 250 ℃
Manual welding temperature 280-320℃
Deviation tolerance of surface mount devices ±50um
Connector alignment tolerance ±50um
IC alignment tolerance ±50um
LED alignment tolerance ±50um
LED offset angle
LED parallelism tolerance ±50um
AOI inspection capability General: CHIP minimum: 0201,
IC spacing: pitch=0.3mm;
Limit: CHIP Minimum: 01005,
IC spacing: pitch=0.3mm
ICT testing 1200 points
glue UV glue, thermosetting glue, underfill (bottom filling)
Excess glue tolerance for dispensing (dispensing side) ±50um
Excess glue tolerance for dispensing (non dispensing side) ±50um