Custom CircuitBoards 0.4 mm 4 Layer PCB Immersion Gold For Power Rail
| Place of Origin: | Zhejiang, China (Mainland) |
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Product Detail
Custom CircuitBoards 0.4 mm 4 Layer PCB Immersion Gold For Power Rail
PCB properties
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Custom CircuitBoards 0.4 mm 4 Layer PCB Immersion Gold For Power Rail
PCB properties
| PCB SIZE | 100 x 100mm=20PCS |
| BOARD TYPE | |
| Number of Layers | Multilayer PCB, 4 layer PCB |
| Surface Mount Components | YES |
| Through Hole Components | NO |
| LAYER STACKUP | copper ------- 18um(0.5oz)+plate TOP layer |
| Prepreg 0.102mm | |
| copper ------- 18um(0.5oz) MidLayer 1 | |
| FR-4 0.102mm | |
| copper ------- 18um(0.5oz) MidLayer 2 | |
| Prepreg 0.102mm | |
| copper ------- 18um(0.5oz)+plate BOT Layer | |
| TECHNOLOGY | |
| Minimum Trace and Space: | 4mil/4mil |
| Minmum / Maximum Holes: | 0.3/5.0mm |
| Number of Different Holes: | 9 |
| Number of Drill Holes: | 1251 |
| Number of Milled Slots: | 60 |
| Number of Internal Cutouts: | 0 |
| Impedance Control: | no |
| Number of Gold finger: | 0 |
| BOARD MATERIAL | |
| Glass Epoxy: | FR-4 TG135, CTI 175V-249V, er<5.4. ITEQ Supplied |
| Final foil external: | 1oz |
| Final foil internal: | 0.5oz |
| Final height of PCB: | 0.4mm ±0.1 |
| PLATING AND COATING | |
| Surface Finish | Immersion gold 0.05µm over 3µm Nickel (13.2% area) |
| Solder Mask Apply To: | TOP and Bottom, 12micron Minimum |
| Solder Mask Color: | Green, PSR-2000GT600D, Taiyo Supplied |
| Solder Mask Type: | LPSM |
| CONTOUR/CUTTING | Routing |
| MARKING | |
| Side of Component Legend | TOP |
| Colour of Component Legend | White, S-380W, Taiyo Supplied. |
| Manufacturer Name or Logo: | Marked on the board in a conductor and leged FREE AREA |
| VIA | Plated through hole(PTH), via tented. Castellation Holes on edge(Half hole) |
| 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: | Power rails |
| TYPE OF ARTWORK TO BE SUPPLIED | email file, Gerber RS-274-X, PCBDOC etc |
| SERVICE AREA | Worldwide, Globally. |
Advantages
a) FR-4 thin laminates. UL94V0 flame retardant.
b) PCB manufacturing on required specifications. Right manufacturing instruction (MI), comprehensive equipment management and maintenance and process control, strict WIP inspection and monitoring as well as working instruction, all those make the whole fabrication process totally controlled.
c) ISO certified PCB manufacturing factory.
d) Meeting your printed circuit board needs from PCB prototyping to mass volume production.
More Applications in Electronics
GPRS Modem
3G USB
Modem Wifi 3G
3G Wireless Router
AC DC Inverter
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.
FAQ
Do you sell heavy copper PCB?
Yes. Heavy copper PCBs can withstand high current and have good heat dissipation, it has been satisfting the market of power convertion module boards which is used in
automobile electronics and electric equipment.
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Company Info
BICHENG ENTERPRISE LIMITED [China (Mainland)]
Business Type:Manufacturer
City: Shenzhen
Province/State: Guangdong
Country/Region: China (Mainland)
