Type: Flexible Circuit Boards (FPC) for consumer card readers, designed for portable card reader devices, with excellent flexible adaptation and signal transmission performance. Whether it is an external SD card reader for cell phones, a built-in memory card interface for notebook computers, or the card slot connection circuit of an all-in-one card reader, it can flexibly adapt to the compact space layout of the card reader (such as the edge of the card slot of a thin and lightweight body, or the curved part of a folding card reader), realizing high-speed data conduction between the memory card and the main control chip, and providing the user with a "Plug and Play, High-speed Transmission The card reader can realize high-speed data conduction between the memory card and the main control chip, providing users with “plug and read, high-speed transmission” experience.

Minimum Line Width / Line Spacing: Reach the high precision standard of 0.3mm/0.2mm. This parameter is optimized for the data transmission characteristics of the card reader: 0.3mm line width ensures that high-speed data signals (e.g., 5Gbps transmission rate of the USB 3.0 protocol) have lower transmission loss (signal attenuation rate of ≤0.5dB/m), reducing the delay in data transmission; 0.2mm line spacing enables multi-channel independent wiring within the limited space of the wiring to support the separation of the power supply, data, and ground lines (e.g., 9-pin parallel signal transmission for SD cards). The 0.2mm wire spacing enables independent multi-channel wiring within the limited wiring space, supports separate transmission of power, data and ground lines (such as 9-pin parallel transmission of SD card signals), avoids signal crosstalk-induced data errors (transmission BER ≤ 10-⁹), and guarantees file read/write integrity.

Layers: 2-layer structure design, through scientific layering to achieve precise division of functions:

signal layer: differential alignment design, optimize the data transmission path, adapted to the high bandwidth requirements of the card reader (support USB 3.0, UHS-I and other high-speed protocols), to ensure that the transmission of large files (eg, 4K video) is smooth and free of lag;

ground layer: a large area of copper foil covering the formation of electromagnetic shielding barriers, effectively isolating the equipment from interference with the internal RF module, power supply, and reducing the data read/write integrity. Ground layer: a large area of copper foil covers to form an electromagnetic shielding barrier, effectively isolating the interference of RF module and power supply inside the device, reducing noise interference in data transmission (signal-to-noise ratio ≥ 60dB), especially suitable for close contact with cell phones, tablet PCs and other strong electromagnetic environment.

Two-layer synergy in the protection of high-speed transmission at the same time, significantly improve the anti-jamming ability to adapt to the complex electromagnetic environment of consumer electronics.

Thickness: The ultimate thinness of only 0.1mm is perfectly suited to the “thin and light” design trend of consumer card readers (e.g., body thickness <5mm). In portable card readers, it can significantly reduce the occupation of the row of wires on the thickness of the device, to release space for the larger capacity of the battery, more card slot layout; in the folding card reader, it can enhance the flexibility of bending (support the minimum bending radius R = 0.5mm), to adapt to the use of frequent opening and closing scenarios, to avoid fatigue breakage of the row of wires.

Surface treatment: the use of immersed gold 1 micro-inch process (nickel layer thickness ≥ 3μm, gold layer thickness ≥ 0.025μm), to bring multiple consumer-grade advantages:

excellent conductivity of the gold layer, reducing data signal transmission loss, to ensure that the contact resistance of the reader interface ≤ 10mΩ, to enhance the stability of data transmission;

immersed gold plating to enhance the abrasion resistance, and can be subjected to frequent insertion and removal of the friction (insertion and removal of ≥ 10000 times), to avoid the oxidation of the contacts after long-term use, to avoid the oxidization of the contacts. Avoiding “card reading failure, data interruption” and other problems caused by contact oxidation after long-term use;

to enhance the reliability of the solder joints, to ensure that the row of wires and the main control chip, the card slot interface of the welded parts of the high and low-temperature environment (-20 ℃ ~ +70 ℃) in contact with the stability of the user's daily use of the environment temperature difference changes.

Capel Flexible PCB & Rigid-Flex PCB Process  Capability

2 Layer Flexible PCB Boards Stackup

4 Layer Rigid-Flex PCB Stackup

8 layer HDI PCBs

Microscope Testing

AOI Inspection

2D Testing

Impedance Testing

RoHS Testing

Flying Probe

Horizontal Tester

Bending Teste

Owning 3 factories for Flexible PCB&Rigid-Flex PCB, Rigid PCB, DIP/SMT Assembly;
300+Engineers Provide technical support for Pre-sales and after-sales online;
1-30 layers FPC, 2-32 layers Rigid-FlexPCB, 1-60 layers Rigid PCB
HDI Boards, Flexible PCB (FPC), Rigid-Flex PCBs, Multilayer PCBs, Single-sided PCB, Double-Sided Circuit Boards, Hollow Boards, Rogers PCB, rf PCB, Metal Core PCB, Special Process Boards, Ceramic PCB, Aluminum PCB, SMT & PTH Assembly, PCB Prototype Service.
Provide 24-hour PCB Prototyping service,Small Batches of circuit boards will be delivered in 5-7 days, Mass Production of PCB boards will be delivered in 2-3 weeks;
Industries we service: Medical Devices, IOT, TUT, UAV, Aviation, Automotive, Telecommunications, Consumer Electronics, Military, Aerospace, Industrial Control, Artificial Intelligence, EV, etc…
Our Production Capacity:
FPC and Rigid-Flex PCBs production capacity can reach more than 150000sqm per month,
PCB production capacity can reach 80000sqm per month,
PCB Assembling capacity at 150,000,000 components per month.
Our teams of engineers and researchers are dedicated to fulfilling your requirements with precision and professionalism.