ČSN EN IEC 63138-4 (353813)

Multi-channel radio-frequency connectors - Part 4: Sectional specification for type L32-4 and L32-5 circular connectors

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STANDARD published on 1.7.2026


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The information about the standard:

Designation standards: ČSN EN IEC 63138-4
Classification mark: 353813
Catalog number: 524074
Publication date standards: 1.7.2026
SKU: NS-1275174
The number of pages: 40
Approximate weight : 120 g (0.26 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

The category - similar standards:

R.F. connectors

Annotation of standard text ČSN EN IEC 63138-4 (353813):

This part of IEC 63138, which is a Sectional Specification (SS), provides information and rules for the preparation of Detail Specifications (DS) for type L32-4 and L32-5 circular connectors with four RF channels and five RF channels, as well as a detailed specification of the blank format.

The L32-4 and L32-5 circular connectors with 50 Ohm nominal impedance has four RF channels and five RF channels which can be engaged and disengaged at the same time. They are characterized by threaded coupling mechanisms, anti-misinsertion mechanism, and the operating frequency of each channel is up to 4 GHz. These connectors have been widely used in mobile communication system like TD-SCDMA and TD-LTE and can also be used in some similar equipment.

This document also specifies mating face dimensions for general connectors (grade 2), gauging information and tests selected from IEC 63138-1, applicable to all Detail Specifications relating to type L32 4 and L32-5 circular connectors.

NOTE - Metric dimension are original dimensions. All undimensioned pictorial configurations are for reference purpose only

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