Name: Black Oil OSP 4 Layer PCB Printed Circuit Board For Medical Equipment
Brand: xingqiang
Price: 1 USD

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Black Oil OSP 4 Layer PCB Printed Circuit Board For Medical Equipment

Categories	Medical PCB
Brand Name:	xingqiang
Model Number:	Varies by goods condition
Certification:	ROHS, CE
Place of Origin:	China
MOQ:	Sample,1 pc(5 square meters)
Price:	NA
Payment Terms:	,T/T,Western Union
Supply Ability:	3000
Delivery Time:	7-10 work days
Max. Panel Size:	528x600mm
Surface Finish:	HASL, ENIG, OSP, Immersion Silver
Solder Mask Color:	Green, Blue, Black, Red, Yellow, White
Min. Hole Size:	0.1mm
Silkscreen Color:	White, Black, Yellow
Testing:	100% E-test
Copper Thickness:	1-3 oz
Application:	Medical equipment
Min. Trace/Space:	0.1mm/0.1mm
Board Thickness:	0.2-5.0mm
Material:	FR-4
Lead Time:	5-10 days
Layer Count:	2-8 layers

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Company Info.

Dongguan Xingqiang Circuit Board Technology Co., Ltd.

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Black Oil OSP 4 Layer PCB Printed Circuit Board For Medical Equipment

Black oil OSP 4-layer board PCB

Product Description​

Black oil OSP 4-layer board PCB is a 4-layer printed circuit board
that combines black solder mask, OSP (Organic Solderability
Preservative) surface treatment, and a multi-layer wiring
structure. The substrate (typically FR-4) consists of four
conductive layers, interconnected by plated through-holes to enable
complex signal transmission. The board is coated with black ink as
the solder mask, providing insulation, circuit protection, and
excellent light-shielding properties. Exposed copper pads on all
layers undergo OSP treatment, forming a thin organic protective
film through chemical reactions to prevent copper oxidation while
maintaining solderability. This PCB is suitable for
medium-complexity circuits, adapting to the welding needs of
precision components like SMT and fine-pitch parts in general
operating environments.​

Core Characteristics​

4-layer structure + black oil solder mask + OSP treatment: The 4-layer design offers ample wiring space for
medium-complexity circuits; the black ink provides stable
insulation, strong light-shielding, and a professional appearance;
the ultra-thin (0.1-0.3μm) OSP film ensures oxidation resistance
and reliable solderability on copper surfaces.​

Interconnected layers: Plated through-holes enable electrical continuity between the
four layers, supporting complex signal routing and power
distribution.​

Process compatibility: The integration of 4-layer lamination, black oil solder mask, and
OSP treatment is stable, with good material compatibility, fitting
into standard production workflows.​

Main Advantages​

Enhanced wiring capacity: The 4-layer structure allows separate power, ground, and signal
layers, reducing crosstalk and improving signal integrity, suitable
for medium-complexity circuits in communication devices and
industrial control systems.​

Reliable solderability: The OSP film is easily removed during soldering, ensuring good
solder wetting on copper surfaces, minimizing cold solder joints,
and adapting to precision components like QFP and BGA.​

Superior light-shielding and protection: The black solder mask effectively blocks light interference in
sensitive circuits and isolates the board from external
environments, boosting corrosion and abrasion resistance.​

Cost-effectiveness: Compared to higher-layer boards, the 4-layer design balances
performance and cost; combined with low-cost OSP and economical
black ink, it offers controllable production expenses, suitable for
cost-sensitive mid-complexity applications.​

Environmental friendliness: The OSP process uses non-toxic organic compounds, and the black
ink is generally eco-friendly, complying with environmental
regulations and reducing hazardous waste.​

Dimensional precision: The thin OSP layer and black ink do not significantly affect the
board’s thickness or flatness, maintaining precision for
high-density 4-layer circuit designs.​

Product Tags:

Black Oil OSP 4 Layer PCB

Medical Equipment 4 Layer PCB

Black Oil OSP 4 Layer PCB Printed Circuit Board For Medical Equipment

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