How to specify a PCB?

A PCB user generally needs to present all of the primary manufacturing data in a complete and unambiguous way that the PCB manufacturer can quote and produce the boards without error.

A checklist is listed as follows. Some parameters not necessary for a particular job can be deleted so that the specification form only reflects the relevant data.

(1)Company name

(2)Part number

(3)Lot size and annual requirements

(4)Layer count

(5)Board size

(6)Board thickness

(7)Board shape

(8)Panelization

(9)Board build-up

(10)Boards with controlled impedance

(11)Test coupon

(12)Machining (Contouring)

(13)Laminate type and UL flammability

(14)Warp & Twist

(15)Outer layers

(16)Inner layers

(17)Solderability preservation

(18)Solder masks

(19)Notation

(20)Peelable solder mask

(21)Carbon printing

(22)Plated through holes (PTHs)

(23)Non-PTHs

(24)Milled Holes (Slots)

(25) Blind via holes

(26) Buried via holes

(27)Board tooling holes

(28)Panel tooling holes

(29)Board mounting

(30)Edge connectors

(31)Soldering conditions

(32)Markings

(33)Electrical test

(34)Automatic optical inspection

(35)Minimum pattern conditions

(36)Quality conditions

A view of PCB panelization

To know a basic situation of one PCB, these 7 points have to be taken into consideration:

(1) Laminate type (base material)

(2) Layer count

(3) Board size

(4) Board thickness

(5) Copper weight

(6) The color of solder mask and silkscreen

(7) Surface finish

Is it much simple now?

If you have any enquiries, please feel free to contact us. Welcome your patronage.

Company Profile

Founded in 2003, Shenzhen Bicheng Electronics Technology Co., Ltd is an established high frequency PCB supplier and exporter in Shenzhen China, severing cellular base station antenna, satellite, high frequency passive components, microstrip line and band line circuit, millimeter wave equipment, radar systems, digital radio frequency antenna and other fields worldwide for 18 years. Our high frequency PCBs are mainly built on 3 high frequency material brands: Rogers Corporation, Taconic and Wangling. Dielectric constant ranges from 2.2 to 10.2 etc.

Bicheng PCB is headquartered in Shenzhen, a city with great economic vitality. Based in China, we adhere to the philosophy of servicing small and medium sized companies offering variety of circuit boards to meet the demands of market.

Main Business & PCB Applications

We maintain the highest standards which support products that exhibit exceptional quality, performance and reliability. We also have divisions of FR-4 circuit board, flexible circuits and metal core PCBs featured as prototypes, small runs to mass production. We actively research and build such high value added PCB projects as HDI, quick turn, impedance control, heavy copper and backplane board etc. This has made our PCB products generate an effective prolongation and complementation, as well as formation of integrated products line ranging from low-end to high-end.The circuit boards are used in the industries of home appliances, portable and consumable electronics, medical filed, aerospace as well as telecommunications etc.

Main Material Partners