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Gallery View: High-frequency PCBs
Global SourcesUpdated on 2023/12/01
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High-frequency PCBs from mainland China suppliers come in PTFE, PPO and high-Tg FR-4 variants.
Based on the laminate used, high-frequency PCBs from mainland China suppliers come in PTFE, PPO and high-Tg FR-4 versions. The first forms the mainstream supply and suits more than 5GHz applications. The last two make up the options for 1 to 10GHz uses. The dielectric constant ranges from 2.1 to 4.5 and above.
Global Expert Technologies Ltd of Hong Kong, Shenzhen Tong Ju Technology Co. Ltd, Shenzhen Keyou PCB Co. Ltd and Golden Shine Circuits Ltd offer products adopting high-Tg FR-4 laminates, while the last three also have PTFE kinds.
There are also single-, double-sided and multilayer types. Releases from Golden Shine and Global Expert come in 4, 6, 8, 10 and 12-layer units. Shenzhen Tong Ju and Shenzhen Keyou turn out mainly double-sided and 4-layer models.
By circuit density, the choices are 3, 3.5, 4 and 5mil minimum line width and spacing, and 0.1, 0.15, 0.2, 0.25 and 0.3mm minimum hole sizes. The surface finish may be ENIG, HASL, OSP, immersion silver or tin, flash gold, gold finger or hard gold plating.
Some manufacturers also use laminates from local providers, mainly Taixing Microwave Material, for lower cost. The rest of the materials such as copper foil and granules, prepreg, tin lead bars, gold salt and chemicals come from the domestic supply.
To stay competitive, makers are keeping prices stable despite increasing labor costs.
Here is a selection of high-frequency PCBs from mainland China & Hong Kong.
4-layer high-frequency PCB for telecom applications
Global Expert Technologies Ltd's 4-layer high-frequency PCB for telecom uses, 4G596B model, has immersion gold surface finish, 3mil minimum line width and spacing, 1oz copper thickness on all layers and 1.6mm board thickness.
The 167.13x153.6mm model has UPC-9000 red solder mask, vias plugged with solder mask and controlled-impedance tracks on the inner layer. CNC routing and BGA technology are used. The unit is RoHS-compliant.
The minimum order is 1sqm. Delivery time is 21 days.
6-layer high-frequency rigid-flex PCB with Tg180 base
The model Goldenshine001 high-frequency rigid-flex PCB from Golden Shine Circuits Ltd adopts a Tg180 FR-4 and polyimide base, and immersion gold surface finish. It has as tight as 3.9mil line width and spacing, and as small as 0.2mm holes. The flexible board is 0.2mm in thickness and the rigid part 2mm.
The 115x200mm model has 50 and 100ohm impedance. It is 100 percent tested before shipment.
The maker requires a minimum order of 10 units. Delivery is within 10 days.
High-frequency PCB with Isola's FR406 laminate
This PWC1055 model from Shenzhen Keyou PCB Co. Ltd is a 2-layer high-frequency PCB for antennas. It has Isola's FR406 laminate, OSP surface finish and 1oz copper. The board thickness is 1.6mm. Dimensions are 166.04x240.67mm.
The minimum order is 3sqm. Delivery lead time is 10 days.
High-frequency PCB uses Arlon AD255 base material
Shenzhen Tong Ju Technology Co. Ltd's model Tongju-RF-S1 2-layer high-frequency PCB uses Arlon AD255 base material and has an immersion silver surface finish and 2oz finished copper. The board is 1.5mm in thickness.
QC includes 100 percent E-testing, and solderability, microsection and thermal stress assessment.
The minimum order of 1 unit is delivered within 8 days.
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