Custom Via Holes PCB Fabrication Red Soldermask

Different colors for printed circuit board soldermask is available,such as Red,Green,Black,Blue,White,Black,Yellow, Purple etc. The main oil brand we used is Rongda,Taiyo.


  • Material: FR4 PCB
  • Layer count: 4 layers
  • Board thickness: 1.6mm
  • Finish copper thickness: 1.0 oz
  • Surface treatment: ENIG ( Immersion Gold )
  • Application: Medical equipment

Our Capability:


Hole:≤5.5mm, Slot:≤4*6.5mm

SMD Pad width/space (min.)

Width:7mil(0.18mm), Space:8mil(0.20mm)

Space of trace to board edge & trace to V-cut (min.)

Trace to board edge: 6mil (0.15mm)

Trace to V-cut: 12mil (0.3mm)

Tolerance after etching
4mil≤W≤12mil:±20%, W>12mil:±12%
Impedance tolerance
Hole to hole position tolerance (min.)
±2mil (0.05mm)
Image to image tolerance (min.)
±3mil (0.076mm)
Image to hole tolerance of outer layer (min.)
±3mil (0.076mm)
Image to board edge tolerance of outer layer (min.)
±3mil (0.076mm)
Hole to board edge position tolerance (min.)
±4mil (0.1mm)
Solder mask registration (min.)
±1.5mil (0.038mm)
Solder mask thickness (min.)

Edge of trace:0.2mil (5um)

Top of trace:0.4mil (10um)

Solder Dam width (min.)
1.5mil (0.038mm)
Space of solder mask opening to trace (min.)
2.5mil (0.068mm)
Solder mask pluging drill hole diameter
Line width of etching (min.)

Dot:10mil (0.25mm)

Line:8mil (0.20mm)

Line width out etching (min.)
6mil (0.15mm)
Letter line width of green solder mask (min.)

Dot:6mil (0.15mm)

Line:6mil (0.15mm)

Opening legend line width of green solder mask (min.)


      Others:10mil (0.25mm)

Line:HASL:10mil (0.25mm)

Others:8mil (0.2mm)

Opening line width of green solder mask (min.)
10mil (0.25mm)
Width from wet film to bare copper (min.)
Inkjet: 6mil (0.15mm)
Height of legend

30mil (0.76mm) (Only for silk screen)

Space between legend (disconnect) (min.)
Inkjet: 6mil (0.15mm)
Line width of silkscreen legend
4.0mil (0.1mm)
Space between legend and Pad (min.)
6mil (0.15mm)
Space between legend and board edge (min.)
6mil (0.15mm)
Space between legend and V-cut (min.)
10mil (0.25mm)

PCB Manufacturing Process Flow:


A. Why choose High Precision Technology as PCB supplier?
-- High Precision Technology specialises on PCB manufacturing since 2011 with rich experiences. We mainly use KB & Shengyi Brand laminiate, Rongda & Taiyo brand oil and strictly compliance to IPC-6012 class 2. In our Hunan new factory, all procedures are made in-house. The quality and price can be controlled effectively. If you are still looking for a suitable supplier of PCB fabrication, contact us, we will supply professional and flexible support.

B. What’s kind of certificates do you have?
-- We have certificate ISO9001, ISO14001, UL, TS16949 etc.

C. What's lead time?
-- The lead time can be negotiable to meet your demands.

D. What is MOQ (Minimum Order Quantity)?
-- There is no MOQ for new PN, sample is welcome.

E. What informations need to be supplied for quote?

-- Order quantity, Gerber file, PCB specification ( base material, layer, PCB finished thickness, base copper thickness, surface treatment, solder mask color, and others if you have )

F. Is the files for quote or manufacturing safer? 
-- Yes, it is safe as we are professional PCB manufacturer and Non-disclosure agreement can be signed if you need. All documents from customers are never shared with any third parties.

G. When can the quotation be supplied?
-- All quotation can be supplied within 24 hours.

More enquiry,welcome to send us email.We will always give you professional service with 24H/7D online support.

Welcome to send inquiry,we will reply within 12 hours.
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Welcome to send inquiry,we will reply within 12 hours.