ECP.01.250.NLL vs UPL121
| Part Number |
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| Category | Coaxial Connectors (RF) | Coaxial Connectors (RF) |
| Manufacturer | LEMO | Cinch Connectivity Solutions Trompeter |
| Description | CONN MINI COAX RCPT STR 50 OHM | CONN BNC PLUG STR 75OHM SOLDER |
| Package | - | - |
| Series | 1.25 | 120 |
| Mounting Type | Panel Mount | Panel Mount |
| Impedance | 50 Ohm | 75 Ohm |
| Ingress Protection | IP50 - Dust Protected | - |
| Mounting Feature | Bulkhead - Front Side Nut | Bulkhead - Rear Side Nut |
| Connector Type | Receptacle, Female Socket | Plug, Male Pin |
| Contact Termination | Solder Cup | Solder Cup |
| Connector Style | Miniature Coaxial | BNC |
| Fastening Type | Push-Pull | Snap-On |
| Housing Color | Silver | Silver |
| Shield Termination | Solder | Solder |
| Number of Ports | 1 | 1 |
| Frequency - Max | - | 4GHz |
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1. What is a coaxial connector?
Device for connecting coaxial cables
A coaxial connector is a device used to connect coaxial cables or other electronic devices, primarily used in radio frequency (RF) and microwave communications systems. It effectively reduces signal loss and provides good shielding to prevent electromagnetic interference (EMI).
Basic structure and working principle
The basic structure of a coaxial connector includes an inner conductor, an insulator, an outer conductor and a shield. The inner conductor is usually needle-shaped or hole-shaped, the insulator isolates the inner and outer conductors, and the outer conductor and shielding layer provide electromagnetic shielding to prevent signal interference. -
2. What is the difference between RF connectors and coaxial connectors?
Structure and performance indicators
There are significant differences between RF connectors and coaxial connectors in structure, application scenarios and performance indicators.
Structural differences
Coaxial connector: Coaxial connector consists of inner conductor, insulation layer, outer conductor and sheath. The inner conductor is used to connect the signal line, and the outer conductor not only serves as the ground wire of the signal line, but also acts as a shield against electromagnetic fields to prevent signal interference.
RF connector: RF connector usually refers to RF coaxial connector, which is similar in structure to coaxial connector, but RF connector focuses more on the transmission of high-frequency signals, so it has higher requirements in material selection and manufacturing process. .
Differences in performance metrics
Characteristic impedance: Characteristic impedance is an important indicator of RF coaxial connectors, which determines the impedance type of the cable connected to it. The characteristic impedance is determined by the inner diameter of the outer conductor, the outer diameter of the inner conductor, and the dielectric constant of the medium between the inner and outer conductors.
Voltage standing wave ratio: The voltage standing wave ratio reflects the matching level of the connector and is an important parameter to measure the performance of the connector.
To sum up, coaxial connector focuses more on general signal transmission, while RF connector focuses on optimized transmission of high-frequency signals. Both have different emphasis on structure, application scenarios and performance indicators.
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3. What is also called an RF connector?
RF coaxial connector
RF connector, also called radio frequency coaxial connector, is a type of radio frequency connector. RF connectors are mainly used for the transmission and connection of radio frequency signals and are widely used in wireless communications, radio, television, radar and other fields.
historical background
The earliest RF connector-UHF connector was born in 1930. During World War II, due to war needs, the development of radio, radar and microwave communications promoted the innovation of RF connectors, and series connectors such as BNC, TNC, and N appeared34. After 1958, SMA, SMB, SMC, etc. were miniaturized Products came out one after another. In 1964, the United States formulated the "General Specification for Radio Frequency Coaxial Connectors", which promoted the standardization, serialization and generalization of RF connectors. -
4. What is a coaxial F-type connector?
Coaxial RF connector, F-type connector
The coaxial F-type connector is a radio frequency coaxial connector, which is widely used in the fields of cable TV, satellite TV, cable TV modem and TV connection. It is characterized by threaded connection, convenient insertion, and stable performance. It is suitable for occasions with impedance matching requirements and non-matching occasions.
Definition and historical background
The F-type connector was first invented by Eric Winston in the early 1950s and became a common connection connector for VHF television antennas in the United States in the 1970s. Its characteristic impedance is 75 ohms, and the highest frequency can generally support 1GHz or 2.4GHz.
