TC-400-NFC Equivalent & Substitute Parts

Part Overview

The TC-400-NFC is an N-type coaxial connector jack (female socket) manufactured by Amphenol Times Microwave Systems, designed for 50-ohm RF applications with free-hanging solder termination. This connector is rated for operation up to 2 GHz and features clamp-style shield termination. The product is currently obsolete, making identification of suitable substitute components essential for system maintenance, repair, and component sourcing.

Key Parameters

Parameter	Value
Connector Style	N Type
Connector Type	Jack, Female Socket
Impedance	50 Ohms
Contact Termination	Solder
Shield Termination	Clamp
Mounting Type	Free Hanging (In-Line)
Cable Group	LMR-400
Frequency - Max	2 GHz
Operating Temperature	-40°C ~ 85°C
Voltage Rating	1000 V
Body Material	Brass
Body Finish	Nickel
Dielectric Material	Polytetrafluoroethylene (PTFE)
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the TC-400-NFC is determined by the following critical parameters that must remain consistent:

Connector Style & Type: N-type jack (female socket) configuration is mandatory for mechanical and electrical compatibility
Impedance: 50-ohm characteristic impedance is required for RF signal integrity
Contact Termination: Solder termination maintains compatibility with existing cable assemblies
Mounting Type: Free-hanging (in-line) configuration ensures proper installation geometry
Cable Group: LMR-400 compatibility ensures proper mechanical fit and electrical performance
Fastening Type: Threaded connection maintains secure mating interface

The TC-400-NF-X qualifies as a substitute based on these core parameters. While secondary parameters such as frequency rating, operating temperature range, and shield termination method differ, the primary functional and mechanical requirements for connector substitution are satisfied.

Parameter Comparison

Parameter	TC-400-NFC (Main Part)	TC-400-NF-X (Substitute)
Manufacturer	Amphenol Times Microwave Systems	Times Microwave Systems
Product Status	Obsolete	Active
Connector Style	N Type	N Type
Connector Type	Jack, Female Socket	Jack, Female Socket
Contact Termination	Solder	Solder
Shield Termination	Clamp	Crimp
Impedance	50 Ohms	50 Ohms
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Cable Group	LMR-400	LMR-400
Fastening Type	Threaded	Threaded
Frequency - Max	2 GHz	6 GHz
Number of Ports	1	1
Housing Color	Silver	Silver
Center Contact Material	Beryllium Copper	Copper
Body Material	Brass	Brass
Body Finish	Nickel	Nickel
Center Contact Plating	Silver	Gold
Dielectric Material	Polytetrafluoroethylene (PTFE)	Polytetrafluoroethylene (PTFE)
Operating Temperature	-40°C ~ 85°C	-55°C ~ 155°C
Voltage Rating	1000 V	1500 V
Insertion Loss	Not specified	0.1 dB
RoHS Status	RoHS Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4010	8536.69.4010

Engineering Selection Recommendations

The TC-400-NF-X is the manufacturer-recommended substitute for the obsolete TC-400-NFC. Selection of this substitute is supported by the following factors:

Product Status: The TC-400-NF-X maintains active production status, ensuring continued availability and supply chain reliability
Compliance: Both parts maintain equivalent regulatory compliance (RoHS and ECCN classifications)
Core Functionality: Identical connector geometry, impedance, and termination method ensure direct functional replacement
Enhanced Performance: The TC-400-NF-X provides extended operating temperature range (-55°C to 155°C versus -40°C to 85°C) and higher voltage rating (1500 V versus 1000 V), making it suitable for broader application requirements
Frequency Capability: The substitute supports operation to 6 GHz, exceeding the original 2 GHz specification and providing margin for future applications

Frequently Asked Questions (FAQ)

Q: Can the TC-400-NF-X directly replace the TC-400-NFC in existing assemblies?

A: Yes. Both connectors share identical N-type jack configuration, 50-ohm impedance, solder termination, and LMR-400 cable compatibility. The substitute maintains mechanical and electrical compatibility with the original part.

Q: What is the difference between clamp and crimp shield termination?

A: Clamp termination (TC-400-NFC) uses a mechanical clamping mechanism for shield connection. Crimp termination (TC-400-NF-X) uses a crimped connection. Both methods provide equivalent electrical performance for 50-ohm RF applications.

Q: Does the higher frequency rating of the TC-400-NF-X affect compatibility?

A: No. The 6 GHz maximum frequency of the TC-400-NF-X is a performance enhancement that does not compromise compatibility with systems designed for 2 GHz operation. The connector remains suitable for all original applications.

Q: Are there packaging differences between these parts?

A: The TC-400-NFC is supplied in standard packaging, while the TC-400-NF-X is supplied in bulk packaging. This difference does not affect connector performance or compatibility.

Q: What is the significance of the center contact material difference?

A: The TC-400-NFC uses beryllium copper with silver plating; the TC-400-NF-X uses copper with gold plating. Both configurations provide equivalent electrical conductivity and contact reliability for 50-ohm RF applications.

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