Serial number national standard number national standard name instead of standard number approval date implementation date
1 GB/T 3797-2005 Electrical control equipment GB/T 3797-1989 2005-02-06 2005-08-01
2 GB/T 3883.2-2005 Safety of hand-held power tools - Part 2: Particular requirements for screwdrivers and impact wrenches GB/T 3883.2-1991
3 GB/T3883.4-2005 Safety of hand-held power tools - Part 2: Particular requirements for non-disc sanders and polishing machines GB/T 3883.4-1991
4 GB/T3883.7-2005 Safety of hand-held power tools - Part 2: Particular requirements for hammering tools GB/T 3883.7-1991
5 GB/T 3883.8-2005 Safety of hand-held power tools - Part 2: Particular requirements for electric scissors and electric punching. GB/T 3883.8-1991
6 GB/T 3883.9-2005 Safety of hand-held power tools - Part 2: Particular requirements for tapping machines GB/T 3883.9-1991
7 GB/T 3883.11-2005 Safety of hand-held power tools - Part 2: Particular requirements for reciprocating saws ( jig saws, saws) GB/T 3883.11-1991
8 GB/T 3883.19-2005 Safety of hand-held power tools - Part 2: Particular requirements for dredging machines
9 GB/T 19666-2005 General rules for fire-retardant and fire-resistant wires and cables The authenticity of this information has not been confirmed by the international electrical network, for your reference only.
Flexible PCB
Flexible printed circuit boards derive their name for their ability to enable the circuitry to be designed to fit the electronic device or product, as opposed to building the device to conform with the circuit board. Flex boards are characterized by a distinctly patterned printed circuitry and component arrangement highlighted by a malleable base material.
Exploring the Many Advantages of Flex Circuit Boards
Flexible printed circuit boards offer a number of potential benefits including:
• Saving Space: Flex PCB design requires only about 10 percent of the space and weight of a wired circuit board assembly, offering greater installation and packaging freedom. The inherent flexibility also permits tighter bend capabilities.
• Maximum Reliability: A flexible printed circuit board requires fewer interconnects, which in turn require fewer contact crimps, connectors and solder joints. Simply put, a flexible PCB board does not contain as many potential sources for failure, which enhances their reliability.
• Enhanced Capabilities: The flexible PCB is compatible with virtually any type of connector or component and works well with options such as ZIP connectors. They also perform extremely well in extreme temperatures and offer superior resistance to radiation and chemicals.
• Cost Savings: Cost-saving advantages of flexible printed circuits include reduced material and packaging requirements, lower parts replacement costs and a reduction in assembly errors that could otherwise result in the need for repairs.
All of these benefits make flex circuit boards ideally suited for a wide range of applications in industries such as Military, Transportation, Medical, Consumer Electronics, Automotive, Aerospace, Communications and Industrial.
Topscom: A Leading Flex PCB Manufacturer for More Than a Decade
At Topscom, we specialize in the fabrication and assembly of flexible printed circuit products for use in the manufacturing of medical devices and various types of telecommunication and industrial equipment. Our custom PCB manufacturing capabilities allow us to develop and produce a top-performing flex PCB that meets your unique requirements. We can also work with you to produce a custom flex PCB prototype that will significantly improve your prospects of a successful project outcome. Detailed capabilities please refer to the following form.
| Feature | Capability |
| Quality Grade | Standard IPC 2 |
| Number of Layers | 1 - 8layers |
| Order Quantity | 1pc - 10000+pcs |
| Build Time | 2days - 5weeks |
| Material | DuPont PI, Domestic Shengyi PI |
| Board Size | Min 6*6mm, Max 406*610mm |
| Board Thickness | 0.1mm - 0.8mm |
| Copper Weight (Finished) | 0.5oz - 2.0oz |
| Min Tracing/Spacing | 3mil/3mil |
| Solder Mask Sides | As per the file |
| Solder Mask Color | Green, White, Blue, Black, Red, Yellow |
| Solder-stop coating---Soldermask oil | Green, White, Blue, Black, Red, Yellow |
| Solder-stop coating---Coverlay | PI and PET film |
| Silkscreen Sides | As per the file |
| Silkscreen Color | White, Black, Yellow |
| Surface Finish |
HASL - Hot air solder leveling Lead - free HASL - RoHS ENIG - RoHS Immersion Tin - RoHS OSP - RoHS |
| Min Annular Ring | 4mil |
| Min Drilling Hole Diameter | 8mil |
| Min. hole size---Drilling (PTH) | 0.2mil |
| Min. hole size---Punching (NPTH) | 0.5mil |
| Tolerance of dimension | ±0.05mm |
| Other Techniques |
Peelable solder mask Gold fingers Stiffener (only for PI/FR4 substrate) |
Multi Layers Flexible Pcb,Flexible Pcb Boards,Flexible Pcb Circuit Boards,Custom-Made Flexible Pcb
Topscom Technology Co., Ltd. , http://www.pcbassemblycn.com