1. How do O-Leading ensure quality?
Our high quality standard is achieved with the
following.
1.1 The process is strictly controlled under ISO
9001:2008 standards.
1.2 Extensive use of software in managing the
production process
1.3 State-of-art testing equipments and tools. E.g.
Flying Probe, X-ray Inspection, AOI (Automated Optical
Inspector) and ICT (in-circuit testing).
1.4.Dedicated quality assurance team with failure case
analysis process
1.5.Continuous staff training and education
2. How do O-Leading keep your price competitive?
Over the last decade, prices of many raw
materials (e.g. copper, chemicals) had doubled, tripled
or quadrupled; Chinese currency RMB had appreciated 31%
over US dollar; And our labor cost also
increased significantly.
However, O-Leading have kept our pricing steady.
This owns entirely to our innovations in reducing cost,
avoiding wastes and improving efficiency. Our
prices are very competitive in the industry at the same
quality level.
We believe in a win-win partnership with our
customers. Our partnership will be mutually beneficial
if we can provide you an edgeon cost and
quality.
3. What kinds of boards can O-Leading process?
Common FR4, high-TG and halogen-free boards,
Rogers, Arlon, Telfon, aluminum/copper-based boards,
PI, etc.
4. What data are needed for PCB & PCBA
production?
4.1 BOM (Bill of Materials) with reference
designators: component description, manufacturer’s name
and part number.
4.2 PCB Gerber files.
4.3 PCB fabrication drawing and PCBA assembly
drawing.
4.4 Test procedures.
4.5 Any mechanical restrictions such as assembly height
requirements.
5. What’s the typical process flow for multi-layer
PCB?
Material cutting → Inner dry film → inner etching
→ Inner AOI → Multi-bond→ Layer stack up Pressing →
Drilling → PTH → Panel Plating → Outer Dry Film →
Pattern Plating → Outer etching → Outer AOI → Solder
Mask → Component Mark → Surface finish → Routing → E/T
→ Visual Inspection.
6. What’s the key equipments for HDI
manufacturing?
Key equipment list is as following: Laser
drilling machine, Pressing machine, VCP line, Automatic
Exposing machine, LDI and etc.
The equipments we have are the best in the
industry, laser drilling machines are from Mitsubishi
and Hitachi, LDI machines are from Screen(Japan),
Automatic Exposing machines are also from Hitachi, all
of them make we can meet customer’s technical
requirements.
7. How many types of surface finish O-lead can
do?
O-the leader has the full series of surface
finish, such as: ENIG, OSP, LF-HASL, gold plating
(soft/hard), immersion silver, Tin, silver plating,
immersion tin plating, carbon ink and etc. .. OSP,
ENIG, OSP + ENIG commonly used on the HDI, we usually
recommend that you use a client or OSP OSP + ENIG if
BGA PAD size less than 0.3 mm.
8. What’s your capability for FPC? Can O-Leading
provide SMT service also?
O-Leading can fabricate FPC from single layer to
8layer, the working panel size can be as large as
2000mm*240mm, please find the details in the page “Flex
Capability”
We also provide SMT one stop service to
customer.
9. What are the main factors which will affect the
price of PCB?
Material;
Surface finish;
Technology difficulty;
Different quality criteria;
PCB characteristics;
Payment terms;
Different manufacturing countries.
10. What’s the definition of PCB, PWB and FPC and
what’s the difference?
PCB is short for Printed Circuit Board;
PWB is short for Printed Wire Board, same meaning as
Printed Circuit Board;
FPC is short for Flexible Printed Board.
11. What factors should be considered when choosing the
material for a PCB board?
Below factors should be considered when we choose
the material for PCB:
The material’s Tg value should be greater than
the operation temperature;
Low CTE material has good performance of thermal
stability;
Good thermal resistance performance: Normally PCBs
are required to resist 250℃ for at least 50s.
Good flatness; In consideration of the electrical
properties, low loss/high permittivity material is
used on high frequency PCB; Polyimide glass fiber
substrate used for flexible PCB; Metal core is used
when the product has strict requirement of heat
dissipation.
12. What’s the merits of O-leading's rIgid-flex
PCB?
O-leading’s rigid-flex PCB has the characters
of both FPC and PCB, so it can be used in some
special products. Some part is flexible while the
other part rigid, it can help save product’s interior
space, reduce product volume and improve
performance.
13. How to you make the impedance calculation?
The impedance control system is done using some
test coupons, the SI6000 soft and the CITS 500s
equipment from POLAR INSTRUMENTS.
The equipment measures the impedance on a
representative track configuration coupon of which
the client has given us a determinate value and
tolerance.