1oz Immersion Gold Green PC Board Prototyping High Tg 2 Layer PCB BIC-144835-TA7 manufacturer from China BICHENG ENTERPRISE LIMITED

1oz Immersion Gold Green PC Board Prototyping High Tg 2 Layer PCB

Place of Origin:

Zhejiang, China (Mainland)


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Product Detail

Model No.: BIC-144835-TA7

1oz Immersion Gold Green PC Board Prototyping High Tg 2 Layer PCB

PCB properties
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1oz Immersion Gold Green PC Board Prototyping High Tg 2 Layer PCB

PCB properties

PCB SIZE	172 x 169mm=10PCS
BOARD TYPE
Number of Layers	Double sided PCB, 2 layer PCB
Surface Mount Components	NO
Through Hole Components	YES
LAYER STACKUP	copper ------- 17.8um(0.5oz)+plate TOP layer
	FR-4 1.5mm
	copper ------- 17.8um(0.5oz)+plate BOT Layer
TECHNOLOGY
Minimum Trace and Space:	7mil / 7mil
Minmum / Maximum Holes:	0.3/4.9mm
Number of Different Holes:	6
Number of Drill Holes:	953
Number of Milled Slots:	0
Number of Internal Cutouts:	0
Impedance Control:	no
Number of Gold finger:	0
BOARD MATERIAL
Glass Epoxy:	FR-4 TG170, CTI 175V-249V, er<5.4. ITEQ Supplied
Final foil external:	1oz
Final foil internal:	0oz
Final height of PCB:	1.6mm ±0.16
PLATING AND COATING
Surface Finish	Immersion Gold (32.4%) 2 micoinch over 100 microinch nickle, RoHS
Solder Mask Apply To:	TOP and Bottom, 12micron Minimum
Solder Mask Color:	Green, PSR-2000 GT600D, Taiyo Supplied.
Solder Mask Type:	LPSM
CONTOUR/CUTTING	Routing. Fiducial marks
MARKING
Side of Component Legend	TOP.
Colour of Component Legend	White, IJR-4000 MW300, Taiyo Supplied.
Manufacturer Name or Logo:	Marked on the board in a conductor and leged FREE AREA
VIA	Plated through hole(PTH)
FLAMIBILITY RATING	UL 94-V0 Approval MIN.
DIMENSION TOLERANCE
Outline dimension:	0.0059"
Board plating:	0.0029"
Drill tolerance:	0.002"
TEST	100% Electrical Test prior shipment
APPLICATION:	Vision system
TYPE OF ARTWORK TO BE SUPPLIED	email file, Gerber RS-274-X, PCBDOC etc
SERVICE AREA	Worldwide, Globally.

Advantages

a) High Tg temperature PCB. Industrial standard material with high Tg (175 by DSC) and excellent thermal reliability.

b) Immersion gold. Good oxidation resistance and good heat dissipation.

c) ISO certified PCB manufacturing factory.

d) No minimum order quantity. 1-10 pieces are offered for sale.

More Applications in Electronics

AC/DC Power Converter
LGBT Inverter
UMTS Modem
Antenna Wireless
Routeur 3G

PCB knowledge: Glass Transition Temperature (Tg)

The thermal properties of the resin system are characterized by the glass transition temperature (Tg), which always is expressed in °C. The most commonly used property is the thermal expansion. When measuring the expansion versus the temperature, we can get a curve as shown in following picture. The Tg is determined by the intersection of the tangents of the flat and steep parts of the expansion curve. Below the glass transition temperature, the epoxy resin is rigid and glassy. When the glass transition temperature is exceeded, it changes to a soft and rubbery state.

For the most commonly used types of epoxy resin (FR-4 grade), the glass transition temperature is in the range 115-130°C, so when the board is soldered, the glass transition temperature is easily exceeded. The board expands in the Z-axis direction and stresses the copper of the hole wall. The expansion of epoxy resin is about 15 to 20 times greater than that of copper when exceeding Tg. This implies a certain risk of wall cracking in plated-through holes, and the more resin around the hole wall, the greater risk. Below the glass transition temperature, the expansion ratio between epoxy and copper is only three times, so here the risk of cracking is negligible.

Measurement of Tg (The temperature at the point A)

FAQ

Where do you sell your PCBs?
We sell our PCB's worldwidely.
North America, Oceania, Southeast Asia, Eastern Europe, Africa, Latin America, Western & Southern Europe, Northen Europe, Central & South Asian, Middle East.