Flexible Flat Cable
No1.FFC wire harness definition:
FFC wire harness, flexible flat cable harness. It is a flat wire harness composed of multiple flat conductors arranged side by side and wrapped with an insulating layer. FFC wire harness has the characteristics of softness, flexibility, thickness and small space occupation. It is often used for signal and power transmission in various electronic equipment, such as wiring connections inside computers, monitors, printers, copiers, digital cameras and other equipment.
No.2. FFC wiring harness has the following characteristics:
1. Soft and bendable: able to adapt to various complex installation environments and angles
2. Thin and light: It does not take up too much space and is conducive to the miniaturization and lightweight design of the product.
3. Convenient wiring: wiring and connections can be made conveniently.
4. Lower cost: FFC wire harness has certain price advantages compared to other wire harness types.
5. Stable transmission performance: can reliably transmit current and signals.
6. Bending resistance: It can still maintain good performance after repeated bending.
7. Easy to mass produce: the production process is relatively simple.
8. Simple assembly: Simplifies the circuit connection operations inside the electronic equipment.
No.3.The main performance of FFC wire harness includes:
1. Electrical properties: It has good electrical conductivity, which can ensure stable transmission of signals and currents, and has low resistance and impedance, reducing signal attenuation and distortion.
2. Flexibility: It can be bent and twisted repeatedly without being easily damaged, maintaining the reliability of the connection.
3. Wear resistance: It can resist a certain degree of friction and wear during use.
4. Anti-interference: It can effectively reduce the impact of external electromagnetic interference on signal transmission.
5. Heat resistance: It can work normally within a certain temperature range to ensure stable performance.
6. Insulation performance: The insulation layer has a good insulation effect and prevents problems such as short circuits.
7. Durability: It has a long service life and can withstand long-term use and environmental tests.
No.4.Some common tests on FFC harnesses:
1. Electrical performance test:
A. Continuity test: Check whether each conductor in the wiring harness has good conduction.
B. Insulation resistance test: measure the resistance value of the insulation layer between conductors to ensure that the insulation performance meets the standard.
C. Impedance test: Check whether the impedance of signal transmission meets the requirements.
2. Mechanical performance test:
A. Bending test: bend the wire harness repeatedly to observe its bending resistance and whether there is any damage.
B. Tensile test: Apply a certain tensile force to test the tensile strength of the wire harness.
3. Heat resistance test: Place the FFC wire harness in different temperature environments for a period of time to check its performance changes.
4. Weather resistance test: simulate various climatic conditions, such as humidity, temperature changes, etc., to evaluate the durability of the wire harness.
5. Appearance inspection: Check whether there are any defects such as damage, scratches, indentations, etc. on the surface of the wire harness.
6. Dimensional measurement: Verify whether the length, width, thickness and other dimensions of the wire harness meet the specifications.
No.5.You can judge whether the FFC wiring harness is defective through the following aspects:
1. Appearance inspection: If the wire harness has obvious damage, breakage, rupture of the insulation layer, serious wrinkles, etc., it can be judged as defective.
2. Abnormal continuity: When using instruments to detect, it is found that some wires are not conducting or have excessive conduction resistance.
3. The insulation resistance is not up to standard: the measured insulation resistance value is lower than the specified standard.
4. Signal transmission problems: In practical applications, signal loss, severe attenuation, distortion, etc. occur.
5. Dimensions do not match: length, width, thickness and other dimensions are quite different from the design requirements.
6. Poor bending resistance: damage occurred after a simple bending test.
7. Poor contact: Looseness and unstable contact occur when the plug and socket are connected.
8. Poor temperature adaptability: performance drops sharply or is damaged in a specific temperature environment.
9. Weak anti-interference ability: It is easily affected by external electromagnetic interference and affects normal work.
No.6.How to test the FFC harness:
1. Appearance inspection: Visually inspect the appearance of the wiring harness for defects such as damage, indentation, distortion, deformation, etc.
2. Continuity test: Use a special continuity tester to check whether each line in the wiring harness has good conduction and whether there is an break circuit.
3. Insulation resistance test: Measure the insulation resistance of the wire harness to ensure that the insulation performance meets the requirements and prevent short circuit or leakage.
4. Withstand voltage test: Apply a certain voltage and check whether the wire harness can withstand the specified voltage without breakdown or other abnormalities.
5. Plug and pull force test (if there is a plug and pull connection): Test whether the plug and pull force between the plug and the socket is within the appropriate range.
6. Dimensional inspection: Verify whether the length, width, thickness and other dimensions of the wire harness meet the design specifications.
7. Bending test: simulate the bending situation in actual use and check whether the performance of the wire harness is affected after bending.
8. Temperature cycle test: Place the wire harness in cyclic changes in different temperature environments to evaluate its reliability and stability.
No.7.The following factors can be considered when purchasing FFC wiring harness:
1. Specifications and dimensions: Ensure that they match the interface and installation space of the equipment being used, including width, thickness, length, etc.
2. Electrical performance: Understand whether its conduction performance, impedance, insulation resistance and other parameters meet the requirements.
3. Flexibility: Choose products with good flexibility that can adapt to different installation angles and frequent bending.
4. Temperature resistance: According to the ambient temperature requirements, select a wire harness that can work normally within the corresponding temperature range.
5. Quality reliability: Choose well-known brands or manufacturers with good reputation to ensure stable product quality.
6. Anti-interference ability: If the application environment has strong electromagnetic interference, you need to pay attention to its anti-interference performance.
7. Durability: Examine whether it can maintain stable performance during long-term use.
8. Price: On the premise of ensuring quality, compare the prices of different suppliers and choose the one with higher cost performance.
9. Customization capabilities: If there are special needs, check whether the supplier has the ability to customize production.
10. Certification status: For example, whether it has passed relevant industry standard certification.
