Single sided PCB is only printed circuit on one side of the substrate, also known as printed etching board. Etch resist is usually printed by screen printing technology, and the conductor pattern is formed by chemical etching to remove the exposed copper foil.
Typical material of single sided printed circuit board
This circuit board manufacturing method is generally used in low-cost, mass, and relatively less functional device. Most of the single-sided PCB is made from the lowest cost paper substrate, and the most popular paper based flame retardant phenolic resin XPC is used. It is a kind of laminates with high punching properties.
On the other hand, many materials can be used for single sided PCB according to its actual applications. For example, FR-4 is often seen in our home appliances, CEM-1 and FR-1 are often seen in the toys, aluminum substrate in LED lighting and polyimide in the flexible PCB etc.
Manufacturing process of single side circuit board
Generally, a highly automated production and conveyor belt printing and etching production line is adopted for mass production. The basic process is as follows.
Step 1, Saw or cut the substrate to the appropriate size of the plate.
Step 2, Put the laminate into the loader and send it to the production line.
Step 3, Clean the surface of laminate.
Step 4, Use UV curable anticorrosion ink for surface screen printing.
Step 5, Solidified anticorrosion ink.
Step 6, Etch exposed copper.
Step 7, Strip anticorrosion ink.
Step 8, Coat solder mask ink.
Step 9, Print component text.
Step 10, Drill or punch holes.
Step 11, Test open/short circuit
Step 12, Pack boards and make delivery.
The speed of the automatic printing and etching line conveyor is 35-45 ft/min. Mass production lines are equipped with on-line optical inspection, so that the final electrical open circuit short circuit test can be avoided.
In some process changes, the surface of the PCB conductor is insulated, only the pads are exposed, then the conductive paste is printed, the extra conductor is formed on the same side of the circuit board, and the double conductor layer is formed on the surface of a single layer.
Most metal core PCB consumer products generally use copper clad aluminum based materials, copper clad copper based material and iron etc. PCB made of these materials has no plated-through-hole, and the components are usually surface mounted. Recently years, plated through holes on metal cores are also used in the heat dissipation equipment. Some example can be found in Bicheng's latest MCPCB shipment.
North America, Oceania, Southeast Asia, Eastern Europe, Africa, Latin America, Western & Southern Europe, Northen Europe, Central & South Asian, Middle East.
Payment & Shipping Terms:
|Glass Epoxy:||FR-4 Tg135℃, Er<5.4.IT-158, ITEQ Supplied||Final Height Of PCB:||3.0 Mm ±0.3|
|Final Foil External:||1 Oz||Surface Finish:||Immersion Gold (32.1% ) 0.05µm Over 3µm Nickel|
|Solder Mask Color:||Green||Colour Of Component Legend:||White|
|TEST:||100% Electrical Test Prior Shipment|
1.1 General description
This is a type of 3.0mm thick PCB built on single sided FR-4 substrate with Tg 150°C for
the application of step down transformer. It's small round circut board panelized 48 up.
V-cut (v groove) and router are used on the panel, fiducial marks are around each board.
Other specifications are green solder mask, white silkscreen and immersion gold. The
base material substrate is from ITEQ IT-158. They're fabricated per IPC 6012 Class 2
using supplied Gerber data. Each 20 panels are packed for shipment.
1.2 Features and benefits
A. It's suitable for handheld and consumer applications;
B. Lead free assemblies with a maximum reflow temperature of 260℃;
C. SMT process is resistant to reflow soldering, resistant to rework;
D. Good oxidation resistance and good heat dissipation;
E. 16000 square meter workshop;
F. 30000 square meter month capability;
G. Small quantity order is accepted;
H. Powerful PCB capabilities support your reaearch and development, sales and
Bluetooth Devices, Signal Generator, GPS Tracker For Kids, Vehicle Tracking Device,
Broadband Modem, External WiFi Antenna, Medium Access Control, Logic Controller,
Gate Access Control, High Speed Servers
1.4 Parameter and data sheet
|PCB SIZE||225 x 290mm=48PCS|
|BOARD TYPE||Single Sided PCB|
|Number of Layers||1 Layer|
|Surface Mount Components||YES|
|Through Hole Components||no|
|LAYER STACKUP||copper ------- 18um(0.5oz)+plate TOP layer|
|Minimum Trace and Space:||10 mil / 9 mil|
|Minimum / Maximum Holes:||0.4 mm / 0.8 mm|
|Number of Different Holes:||2|
|Number of Drill Holes:||27|
|Number of Milled Slots:||56|
|Number of Internal Cutouts:||0|
|Number of Gold finger:||0|
|Glass Epoxy:||FR-4 Tg135℃, er<5.4.IT-158, ITEQ Supplied|
|Final foil external:||1 oz|
|Final foil internal:|
|Final height of PCB:||3.0 mm ±0.3|
|PLATING AND COATING|
|Surface Finish||Immersion gold (32.1% ) 0.05µm over 3µm nickel|
|Solder Mask Apply To:||TOP and Bottom, 12micron Minimum|
|Solder Mask Color:||Green, PSR-2000GT600D, Taiyo Supplied.|
|Solder Mask Type:||LPSM|
|CONTOUR/CUTTING||Routing, stamp holes.|
|Side of Component Legend||TOP and Bottom.|
|Colour of Component Legend||White, IJR-4000 MW300, Taiyo brand|
|Manufacturer Name or Logo:||
Marked on the board in a conductor and
leged FREE AREA
|VIA||Plated through hole(PTH), minimum size 0.4mm.|
|FLAMIBILITY RATING||UL 94-V0 Approval MIN.|
|TEST||100% Electrical Test prior shipment|
|TYPE OF ARTWORK TO BE SUPPLIED||email file, Gerber RS-274-X, PCBDOC etc|
|SERVICE AREA||Worldwide, Globally.|
Variety of PCB's
Film Exposure machine