UCJ20-5 Equivalent & Substitute Parts

Part Overview

The UCJ20-5 is a BNC connector jack manufactured by Cinch Connectivity Solutions Trompeter, designed for coaxial RF applications requiring 75 Ohm impedance. This female socket connector features solder termination and free-hanging (in-line) mounting with bayonet lock fastening. The part is Active status and RoHS compliant, making it suitable for modern electronic assemblies. Alternative models may be required when system impedance specifications differ or when inventory constraints necessitate equivalent substitution.

Substiute Parts

UCJ20-5

Cinch Connectivity Solutions TrompeterIn Stock: 821UCJ20-5 Datasheet

Current PartRFQ

CJ20-5

Cinch Connectivity Solutions TrompeterIn Stock: 1053CJ20-5 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UCJ20-5 is determined by the following critical parameters: connector style (BNC), connector type (jack, female socket), contact termination method (solder), shield termination (wrench clamp), mounting configuration (free hanging in-line), fastening mechanism (bayonet lock), and frequency capability (4 GHz maximum). The impedance specification is the primary differentiator among available substitutes. The CJ20-5 maintains identical mechanical, thermal, and electrical characteristics with the exception of impedance rating, which is specified at 50 Ohms rather than 75 Ohms. Both parts share the same series designation (20), body material composition, plating specifications, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both UCJ20-5 and CJ20-5 are Active status products with RoHS compliance and identical mechanical construction. Selection between these parts is determined solely by system impedance requirements. The UCJ20-5 is specified for 75 Ohm systems, while the CJ20-5 is specified for 50 Ohm systems. Substitution is valid only when the receiving system impedance specification matches the connector impedance rating. Both parts meet identical environmental, thermal, and voltage specifications, ensuring functional compatibility within their respective impedance-matched applications.

Frequently Asked Questions (FAQ)

Q: Can the CJ20-5 (50 Ohm) be used in place of the UCJ20-5 (75 Ohm)?

A: Substitution is not recommended without system-level impedance verification. The impedance mismatch will result in signal reflections and degraded performance in 75 Ohm systems. Use CJ20-5 only in 50 Ohm applications.

Q: Are the mechanical dimensions and mounting interfaces identical?

A: Yes. Both parts share identical mounting type (free hanging in-line), fastening mechanism (bayonet lock), body material (brass), and finish specifications (nickel with gold plating). Physical installation compatibility is confirmed.

Q: What is the primary difference between these two part numbers?

A: The sole electrical difference is impedance specification: UCJ20-5 is rated at 75 Ohms, while CJ20-5 is rated at 50 Ohms. All other parameters, including frequency response, temperature range, voltage rating, and termination method, are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both UCJ20-5 and CJ20-5 are RoHS compliant with Moisture Sensitivity Level 1 (unlimited shelf life).

Q: What cable types are compatible with these connectors?

A: Both connectors are specified for RG-174 cable group applications.