F4BM265 High Frequency PCB DK 2.65 PTFE RF Circuit Board with 3oz Copper Coating Immersion Gold
(PCB's are custom-made products, the picture and parameters shown are just for reference)
Hello everybody,
Today we talk about a type of F4BM high frequency circuit board.
F4BM series laminates are made by scientifically formulating and strictly pressing a combination of fiberglass cloth, polytetrafluoroethylene resin, and polytetrafluoroethylene film. Its electrical performance is improved compared to F4B, mainly due to a wider range of dielectric constants, lower dielectric loss, increased insulation resistance, and improved stability. It can replace similar foreign products.
PCB Specifications
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Layer count:
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Double sided
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Designator
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F4BM265 (DK 2.65)
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Dimension:
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210 x 115mm/1up
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Finished thickness
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1.6mm ±10%
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Finished Copper weight:
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3oz
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SMOBC:
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No
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Surface finish:
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Immersion gold
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The main specifications of this board is double sided board, substrate is F4BM265 with DK value at 2.65, 210mm long by 115mm wide, 1.6mm finished thick, finished copper 3oz, no solder mask no silkscreen, and surface finish is immersion gold.
Let’s see the stack up.
Top layer and bottom layer are 3oz copper finished. F4BM265 dielectric material is in the middle of 2 layers copper, showing dielectric constant at 2.65
From the photo of this high frequency board, the track is thicker than normal boards; surface finish is immersion gold and no solder mask and silkscreen.
OurPCB Capability (F4BM)
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PCB Capability (F4BTM)
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PCB Material:
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PTFE / glass fiber cloth / Nano-ceramic filler
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Designation (F4BTM )
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F4BTM
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DK (10GHz)
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DF (10 GHz)
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F4BTM298
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2.98±0.06
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0.0018
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F4BTM300
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3.0±0.06
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0.0018
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F4BTM320
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3.2±0.06
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0.0020
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F4BTM350
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3.5±0.07
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0.0025
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Layer count:
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Single Sided, Double Sided PCB, Multilayer PCB, Hybrid PCB
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Copper weight:
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0.5oz (17 µm), 1oz (35µm), 2oz (70µm)
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Dielectric thickness (or overall thickness)
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0.25mm, 0.508mm, 0.762mm, 0.8mm, 1.0mm, 1.016mm, 1.27mm, 1.524mm, 2.0mm, 3.0mm, 4.0mm, 5.0mm, 6.0mm, 8.0mm, 10.0mm, 12.0mm
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PCB size:
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≤400mm X 500mm
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Solder mask:
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Green, Black, Blue, Yellow, Red etc.
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Surface finish:
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Bare copper, HASL, ENIG, Immersion silver, Immersion tin, OSP, Pure gold, ENEPIG etc..
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The dielectric constant of F4BM material is wide, ranging 2.17 to 3.0. Board thickness ranges 0.13mm to12.0mm. We can provide you with prototype service, small batches and mass production service.
Should you have any questions, please feel free to contact us.
Thank you for your reading.
Appendix: Data Sheet(F4BM)
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Product Technical Parameters
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Product Models & Data Sheet
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Product Features
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Test Conditions
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Unit
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F4BTM298
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F4BTM300
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F4BTM320
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F4BTM350
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Dielectric Constant (Typical)
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10GHz
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/
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2.98
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3.0
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3.2
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3.5
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Dielectric Constant Tolerance
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/
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/
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±0.06
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±0.06
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±0.06
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±0.07
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Loss Tangent (Typical)
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10GHz
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/
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0.0018
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0.0018
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0.0020
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0.0025
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20GHz
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/
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0.0023
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0.0023
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0.0026
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0.0035
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Dielectric Constant Temperature Coefficient
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-55 º~150ºC
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PPM/℃
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-78
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-75
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-75
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-60
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Peel Strength
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1 OZ F4BTM
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N/mm
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>1.6
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>1.6
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>1.6
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>1.6
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1 OZ F4BTME
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N/mm
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>1.4
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>1.4
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>1.4
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>1.4
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Volume Resistivity
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Standard Condition
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MΩ.cm
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≥1×10^7
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≥1×10^7
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≥1×10^7
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≥1×10^7
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Surface Resistivity
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Standard Condition
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MΩ
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≥1×10^6
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≥1×10^6
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≥1×10^6
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≥1×10^6
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Electrical Strength (Z direction)
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5KW，500V/s
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KV/mm
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>26
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>30
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>32
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>32
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Breakdown Voltage (XY direction)
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5KW，500V/s
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KV
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>34
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>35
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>40
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>40
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Coefficientof Thermal Expansion
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XY direction
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-55 º~288ºC
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ppm/ºC
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15，16
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15，16
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13，15
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10，12
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Z direction
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-55 º~288ºC
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ppm/ºC
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78
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72
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58
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51
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Thermal Stress
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260℃, 10s，3 times
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No delamination
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No delamination
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No delamination
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No delamination
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Water Absorption
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20±2℃, 24 hours
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%
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≤0.05
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≤0.05
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≤0.05
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≤0.05
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Density
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Room Temperature
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g/cm3
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2.25
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2.25
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2.20
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2.20
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Long-Term Operating Temperature
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High-Low Temperature Chamber
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℃
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-55～+260
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-55～+260
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-55～+260
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-55～+260
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Thermal Conductivity
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Z direction
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W/(M.K)
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0.42
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0.42
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0.50
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0.54
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PIM
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Only applicable to F4BTME
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dBc
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≤-160
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≤-160
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≤-160
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≤-160
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Flammability
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/
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UL-94
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V-0
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V-0
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V-0
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V-0
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Material Composition
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/
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/
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PTFE, Fiberglass Cloth, nano-ceramics
F4BTM paired with ED copper foil, F4BTME paired with reverse-treated (RTF) copper foil.
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BICHENG PCB CERTIFICATE:
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Tel : +86 755 27374946
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Email : info@bichengpcb.com
