BLOG

RF Cable

Discussion on the development of RF coaxial connector technology

RF coaxial connector, or RF connector, is a small electronic component installed on a cable or instrument. Its main function is to act as a bridge in the process of electrical connection or separation. Discussion on the development trend of RF coaxial connector As far as the current development situation is concerned, RF coaxial connectors mainly have the following main development directions: miniaturization, high frequency, low electromagnetic loss and leakage, and high power. 1. Miniaturization The miniaturization of the whole system has gradually reduced the size of the RF coaxial connector, and the main representative is the SMP series RF coaxial connector. The miniaturized product of the SMP series is the SMPM series RF coaxial connector. This connector has the characteristics of small size and light weight, and its volume is only 70% of the general SMP series. And the maximum operating frequency can reach 65 GHz, which has been widely used in military and civilian fields. SMP and SMPM series connectors are attracting more attention in more fields In the civilian field, microwave communications and high-precision measurement have a high demand for micro connectors In the military field, due to its high installation density and high frequency of use,

Wiring harness design, how to choose the wire type

The automotive wiring harness is the main network of the automotive circuit, mainly composed of wires, terminals, plastic parts and coverings. 1. Structure and characteristics of wires The wire consists of a core conductor and an insulation layer. Insulation layer material and its characteristics Insulation materials have the characteristics of insulation, protection, heat resistance and oil resistance. Insulation layer thickness:   ①Thick-walled wire: usually used in areas of the chassis such as wheel speed sensors that require high wear resistance, and the bending radius should also be considered. ②Thin-walled wire: usually used for wires in all areas of the vehicle (excluding the chassis). ③Ultra-thin-walled wire: rarely used at present. Material characteristics of conductors ①Pure copper (annealed): standard conductor material for automotive wires. Hard copper is not recommended and is generally only used on some coaxial cables. ②Copper alloy: generally used in 0.13mm2, in order to increase tensile strength and crimping performance. ③Tin-plated copper: usually used at the Pigtail end. ④Silver-plated copper: usually used in high temperature occasions (200℃+). ⑤Nickel-plated copper: usually used in high temperature areas (O2 sensors) 225℃+. ⑥ Aluminum: Usually used in battery cables to reduce weight and cost, but the conductivity of aluminum conductors is not as

Electric vehicle wiring harness technology and development trends: Leading a new chapter in future travel

In recent years, EVs have transformed the automotive industry, presenting new challenges and opportunities for wiring harnesses—the car’s nervous system.Compared with traditional fuel vehicles, the wiring harness technology of electric vehicles has unique characteristics and development trends. They are leading the transformation of future travel with their unique advantages. 1. Unique challenges of electric vehicle wiring harnesses: high integration and complexity Electric vehicle wiring harness technology faces challenges that traditional fuel vehicle wiring harnesses do not have. Since the power system, battery management system, electronic control system, etc. of electric vehicles require complex electrical connections, the integration of electric vehicle wiring harnesses is higher and the complexity is also stronger. 1.1 High integration: Electric vehicles rely on high-voltage, high-current wiring harnesses for their power system, while the battery management system and electronic control system necessitate numerous sensors and actuators. Therefore, electric vehicle wiring harnesses must incorporate additional cables and connectors to fulfill intricate electrical connection demands. 1.2 High complexity: EV wiring harnesses connect various electronic devices like motors, batteries, chargers, controllers, and sensors, enabling intricate signal transmission and data exchange among them. Therefore, the design and manufacture of electric vehicle wiring harnesses require higher precision and reliability. 2. Development trend

What are the types of network cables?

In the 21st century, the ideal goal is to completely eliminate the use of network cables and live in a world where everything is managed wirelessly. It will be much easier to manage servers without cables to bother with, and we won’t have to waste time labeling and tracking hundreds of cables. Until that time comes, we are stuck with old-fashioned network cables to set up our servers, transfer important data, and operate the machines that are critical to our business. Therefore, it is useful to have a general understanding of the types of cables currently in use and their purposes in the IT industry. Twisted Pair These are the cables most commonly used for Ethernet purposes, they are called “twisted pair” because there are pairs of wires twisted together in the cable, this is done to prevent electromagnetic interference from external sources and other nearby pairs. There are two main classifications of twisted pair cables: Shielded Twisted Pair (STP) Unshielded Twisted Pair (UTP) STPs have an additional layer of shielding that makes them more resistant to external interference and therefore have greater bandwidth maximization capabilities than UTP. The downside to this is that they are heavier and more costly,

Why do we need automotive wiring harnesses?

What is the Automotive wiring harness? Cars are large, with an average length of about 4 meters. Despite this, a car is assembled from more than 10,000 independent parts that cannot be disassembled, and most of these parts are small. The wiring harness in a car is responsible for many functions in the car, such as airbags, ABS brakes, signal lights, and engines. Without the wiring harness, these functions would not be possible. Therefore, we should fully understand the role of the car wiring harness. Next, we will explain the role and importance of the car wiring harness. What is an automotive wiring harness? The automotive wiring harness is the network body of the automotive circuit. Without the wiring harness, there would be no automotive circuit. The wiring harness refers to the contact terminal (connector) made of copper material, which is crimped with the wire and cable, and then the insulator is plastic-pressed or the metal shell is added to form a component that connects the circuit. Simply put, the automotive wiring harness assembles cables, connectors, terminals and wires to transmit electricity in the car. In the past, cars were purely mechanical and could run without electricity. However, driving a

FFC – Flat Flexible Cable: For reliable connections

Designed for board-to-board interconnections in electronic systems, RY Flat Flexible Cables (FFC) are made up of flat tin or gold plated copper conductors insulated with Polyester or Polyimide tapes. From 0.30 mm pitch for space saving to 1.25 mm, a large variety of pitches is available to suit your needs. In addition to the standard range, developed custom designed flat flex cables incorporating folds, shields, notches, punching, slitting, marking or special mounting methods. FFC-Flat Flexible cables are compatible with ZIF and LIF connectors. Advantages Extremely small dimensions: low profile, narrow width, fine pitch. Easy and fast installation: time saving and cost reduction. Compatible with ZIF/LIF connectors. Excellent flexibility and flex life: over 70000000 cycles for the ultra-flexible version (10 mm bend radius). Flat cables with a fine gold coating on the stripped end can be offered to guarantee the absence of tin whiskers. EMI shielding with aluminium tape. Construction RoHS compliant flat conductors: bare copper, tin alloy plated copper, gold plated copper. Insulation: laminated polyester or polyimide tapes. 0.30 mm pitch. 0.50, 1.00, 1.25 mm pitch : 100 micron conductor, 50 and 35 micron conductor versions. Different types of stripping and reinforcement tapes, dependent on the connection type: removable connection

In-depth analysis of FFC and FPC distinction

In the field of electronic connectors, FFC and FPC are two common flexible connectors that play a key role in many electronic devices. However, although they may be similar in appearance, there are significant differences in structure, performance and application. 1. Structural differences FFC (Flexible Flat Cable) is a flat cable made of polyester film or polyimide film as the substrate and copper foil as the conductor, which is embossed by a high-precision embossing machine. Its structural characteristics are that it has a large number of conductors, a small spacing, can be bent and folded, and has excellent flexibility and folding resistance. FPC (Flexible Printed Circuit) is a circuit board made of flexible insulating materials (such as polyimide or polyester film) as the substrate through a printing process. Its structural characteristics are that the conductor layer and the insulating layer are stacked alternately, which can realize multi-layer circuits and complex circuit layouts. 2. Performance differences Due to structural differences, FFC and FPC also differ in performance. The advantage of FFC is its high flexibility and folding resistance, which allows it to bend and fold in a small space and is suitable for various complex electronic devices. In addition, FFC has

How to solve the “siphon” phenomenon of wiring harness?

New problem points Some of the main reasons for vehicle downtime and repairs are related to wiring harness. Despite technological advances, environmental stability remains an ongoing challenge. It’s worth mentioning that fully functional anti-lock braking systems (ABS) have been around since the 1970s. But most of these systems were forced out of the market due to cabling issues. Decades later, the National Highway Traffic Safety Administration’s federal motor vehicle safety standards are finally mandating ABS on commercial and passenger vehicles because the latest electrical systems finally meet the stringent requirements for such safety. With the ever-increasing functionality of modern automobiles, which may have hundreds of wiring connection points, the integrity of the electrical system becomes critical because any single point of failure could bring down the entire system. In the past, unsealed connectors and electronic control units (ECUs) were common in vehicles, but now most of these components are sealed to prevent moisture intrusion. As the design of these critical electrical system components has advanced, stresses caused primarily by temperature fluctuations and water contamination have shifted potential failure points to the next weak link in the system: hinge points and ring terminals. These parts have long been a concern for

What are the USCAR standards for wiring harnesses?

What is USCAR? Automotive wiring harness is an indispensable part of modern automobiles. It carries the functions of electrical signals and power transmission. USCAR (United States Council for Automotive Research) is an organization that formulates and promotes automotive industry standards. This article will explore the importance of the automotive wiring harness standard USCAR and its application areas in the automotive industry. 1. Introduction to USCAR USCAR is a standard jointly drafted by Stellantis, Ford, and General Motors. Its mission is to promote technical cooperation and standardization in the automotive industry to improve the competitiveness and efficiency of the entire industry. USCAR plays an important role in setting standards, one of which is automotive wiring harness standards. 2.USCAR automotive wiring harness standards USCAR has many standards for automotive wiring harnesses. This article briefly popularizes the USCAR standards for wiring harnesses. 1. USCAR 1 SALT SPRAY TESTING AND EVALUATION OF FASTENER FINISHES 2.USCAR 2 Performance Specification for Automotive Electrical Connector Systems 3. USCAR 12 Electrical Connector Design Criteria 4. USCAR 17 PERFORMANCE SPECIFICATION FOR AUTOMOTIVE RF CONNECTOR SYSTEMS 5. USCAR 18 (R) FAKRA SMB RF CONNECTOR SUPPLEMENT 6. USCAR 19 Coaxial Cable Connector Interface – Square Outer Conductor 7.USCAR 20 FIELD CORRELATED

How to choose RF connector?

In the RF and microwave industries, many types of coaxial connectors are designed for specific uses and applications, are smaller, and operate at frequencies up to the GHz and millimeter wave ranges. An industry-accepted connector standard that is compatible with other RF/microwave components and can be used to interconnect coaxial modules within a system while maintaining the coaxial characteristics of the corresponding transmission line. There are many types of RF connectors with different classifications. How to choose the appropriate RF connector? Types of RF connectors According to the connection interface structure, it is divided into: Threaded connection Use series such as SMC, SMA, TNC, N, UHF, 7/16 and 4.1/9.5, suitable for test equipment, military and telecommunications equipment. bayonet type Use series such as BNC and MHV for reliable connection and quick plug-in, and are mostly used in test equipment and military equipment. Push-in It allows very fast coupling and separation, and its structural features are reliable. It is often used in small connectors, such as MCX and SMB series. Push-in self-locking Unique self-locking method, very reliable, usually on high-density small connectors, such as 1.0/2.3, 1.6/5.6 series, fast plugging and unplugging and reliable locking. slide-in Used in different DIN multi-terminal connectors,