TC-240-NM-75 N-Type Coaxial Connector Equivalent & Substitute Parts

Part Overview

The TC-240-NM-75 is an N-Type male plug connector with 75 Ohms impedance, designed for free-hanging (in-line) solder termination applications. Manufactured by Amphenol Times Microwave Systems, this connector is rated for operation up to 2 GHz and is compatible with LMR-240-75 cable assemblies. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs requiring compatible RF connectivity solutions.

Substiute Parts

TC-240-NM-75

Amphenol Times Microwave SystemsIn Stock: 895TC-240-NM-75 Datasheet

Current PartRFQ

EZ-240-NMH-75-X

Amphenol Times Microwave SystemsIn Stock: 833EZ-240-NMH-75-X Datasheet

MFR RecommendedRFQ

TC-400-NM-75/50

Amphenol Times Microwave SystemsIn Stock: 912TC-400-NM-75/50 Datasheet

Parametric EquivalentRFQ

TC-600-NMH-75/50

Amphenol Times Microwave SystemsIn Stock: 661TC-600-NMH-75/50 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TC-240-NM-75 is determined by the following critical parameters: connector style (N Type), connector type (male plug configuration), contact termination method (solder), shield termination (crimp), and impedance compatibility. The substitute parts are grouped into two categories based on their relationship to the main part:

MFR Recommended Substitute: EZ-240-NMH-75-X represents the manufacturer-recommended alternative. While this part maintains N-Type connector compatibility and PTFE dielectric material, it introduces functional differences: it is a female jack (socket) rather than male plug, features panel mount configuration instead of free-hanging, and operates at 50 Ohms impedance instead of 75 Ohms. This part is suitable for applications where impedance conversion and mounting topology changes are acceptable.

Parametric Equivalents: TC-400-NM-75/50 and TC-600-NMH-75/50 maintain the male plug configuration, solder contact termination, and crimp shield termination of the original part. Both operate at 2 GHz maximum frequency and are compatible with larger cable groups (LMR-400-75 and LMR-600-75 respectively). These parts differ in impedance (50 Ohms versus 75 Ohms) and voltage rating, making them suitable for applications where connector form factor and termination method must remain consistent.

Parameter Comparison

Engineering Selection Recommendations

Selection of substitute parts for the TC-240-NM-75 must account for product status and compliance requirements. All substitute parts listed are RoHS Compliant and manufactured by Amphenol Times Microwave Systems, ensuring regulatory alignment and supply chain continuity.

For applications requiring direct form-factor compatibility (male plug, free-hanging configuration, solder termination), the parametric equivalents TC-400-NM-75/50 and TC-600-NMH-75/50 are the appropriate selections. Both parts maintain the connector topology and termination method of the original part while offering active product status. The TC-600-NMH-75/50 provides higher voltage rating (1000 V) compared to the main part (500 V), making it suitable for higher-power applications.

The EZ-240-NMH-75-X represents the manufacturer-recommended alternative but introduces significant functional changes: female jack configuration, panel mount topology, and 50 Ohms impedance. This part is suitable only for applications where system redesign accommodates these changes and where the extended operating temperature range (-40°C ~ 125°C) and higher frequency capability (6 GHz) provide system benefits.

Frequently Asked Questions (FAQ)

Q: Can the EZ-240-NMH-75-X directly replace the TC-240-NM-75 in existing assemblies?

A: No. The EZ-240-NMH-75-X is a female jack with panel mount configuration, whereas the TC-240-NM-75 is a male plug with free-hanging mounting. Direct substitution requires system redesign to accommodate the different connector gender and mounting topology.

Q: What is the impedance difference between the main part and substitute parts?

A: The TC-240-NM-75 operates at 75 Ohms impedance. All substitute parts (EZ-240-NMH-75-X, TC-400-NM-75/50, and TC-600-NMH-75/50) operate at 50 Ohms impedance. Impedance matching must be verified for the target application.

Q: Are the parametric equivalents TC-400-NM-75/50 and TC-600-NMH-75/50 interchangeable?

A: Both parts maintain male plug configuration, solder contact termination, and crimp shield termination. They differ in cable group compatibility (LMR-400-75 versus LMR-600-75) and voltage rating (unspecified versus 1000 V). Selection depends on cable assembly requirements and voltage specifications of the target application.

Q: What is the significance of the cable group designation?

A: Cable group designation indicates the compatible cable type for the connector. TC-240-NM-75 is compatible with LMR-240-75 cable. Substitute parts specify different cable groups (LMR-240, LMR-400-75, LMR-600-75), requiring verification that the target cable assembly matches the selected connector's cable group.

Q: Why is the TC-240-NM-75 listed as obsolete?

A: Product obsolescence indicates the part is no longer in active production. Amphenol Times Microwave Systems has designated this part as end-of-life. Current inventory (872 Pcs) is available, but long-term availability is not guaranteed. Migration to active substitute parts is recommended for new designs.

Q: Does the higher frequency rating of the EZ-240-NMH-75-X (6 GHz versus 2 GHz) make it a suitable substitute?

A: Higher frequency capability does not automatically qualify a part as a suitable substitute. The EZ-240-NMH-75-X introduces multiple functional changes (female jack, panel mount, 50 Ohms impedance) that may not be compatible with the original application. Frequency rating alone is insufficient for substitution determination.