Amphenol RF 122114 TNC Connector Plug Equivalent & Substitute Parts

Part Overview

The Amphenol RF 122114 is a TNC connector plug designed for 50-ohm coaxial cable applications. This male pin connector features crimp termination for both center contact and shield, supporting frequencies up to 11 GHz with a maximum voltage rating of 500 V. The connector is rated for 500 mating cycles and delivers 0.18 dB insertion loss. Currently in active product status with 826 units in stock, this component serves as a reference point for identifying compatible substitute connectors within the RF coaxial connector category. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling component selection flexibility based on availability, compliance status, or specific cable compatibility needs.

Substiute Parts

122114

Amphenol RFIn Stock: 883122114 Datasheet

Current PartRFQ

227079-7

TE Connectivity AMP ConnectorsIn Stock: 933227079-7 Datasheet

SimilarRFQ

5225555-2

TE Connectivity AMP ConnectorsIn Stock: 9985225555-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Amphenol RF 122114 are identified based on strict alignment of electrical and mechanical parameters. The primary substitution criteria include connector style, impedance rating, termination method, mounting configuration, and frequency capability. Parts are grouped into two categories based on connector style compatibility:

Category 1: Direct TNC Style Substitutes Parts maintaining identical TNC connector style, 50-ohm impedance, crimp termination, free-hanging mounting, threaded fastening, and 11 GHz frequency capability qualify as direct substitutes. These parts support equivalent RF performance and mechanical interface compatibility.

Category 2: Alternative Connector Style (BNC) Parts with different connector styles but matching impedance, termination method, mounting type, and voltage rating are listed as alternative substitutes. These parts serve applications where connector style flexibility exists but electrical performance parameters remain constant.

The following parameters determine substitution eligibility:

• Impedance: 50 Ohms (mandatory match)
• Contact Termination: Crimp (mandatory match)
• Shield Termination: Crimp (mandatory match)
• Mounting Type: Free Hanging (In-Line) (mandatory match)
• Voltage Rating: 500 V (mandatory match)
• Mating Cycles: 500 (mandatory match)
• Connector Type: Plug, Male Pin (mandatory match)

Parameter Comparison

Engineering Selection Recommendations

TE Connectivity 5225555-2 (TNC Direct Substitute)

The TE Connectivity 5225555-2 qualifies as a direct electrical and mechanical substitute for the Amphenol RF 122114. Both connectors maintain identical TNC connector style, 50-ohm impedance, crimp termination for center contact and shield, free-hanging mounting configuration, threaded fastening, and 11 GHz frequency capability. Both support 500 V voltage rating and 500 mating cycles. The 5225555-2 features PTFE dielectric material compared to the POM acetal dielectric in the 122114, providing extended operating temperature range (-65°C to 165°C versus unspecified for 122114). The 5225555-2 carries RoHS Compliant status. However, the 5225555-2 is classified as Obsolete product status, indicating discontinued manufacturing. This part remains suitable for applications where existing inventory is available and long-term supply is not required.

TE Connectivity 227079-7 (Alternative BNC Substitute)

The TE Connectivity 227079-7 is a BNC connector plug that shares core electrical parameters with the Amphenol RF 122114, including 50-ohm impedance, crimp termination for both center contact and shield, free-hanging mounting, 500 V voltage rating, and 500 mating cycles. The 227079-7 differs in connector style (BNC versus TNC), fastening type (bayonet lock versus threaded), and maximum frequency (4 GHz versus 11 GHz). The 227079-7 is rated for lower frequency applications and requires different mating interfaces. This part is suitable only for applications where BNC connector style is acceptable and frequency requirements do not exceed 4 GHz. The 227079-7 is currently in active product status with 910 units in stock. However, the 227079-7 is RoHS non-compliant, which may restrict use in regulated applications requiring RoHS compliance.

Selection Criteria Summary

For direct replacement maintaining identical connector style and RF performance: Select TE Connectivity 5225555-2 if inventory availability is confirmed and product obsolescence is acceptable for the application timeline.

For applications permitting connector style change to BNC with reduced frequency capability: Select TE Connectivity 227079-7 only if BNC interface compatibility exists and operating frequency does not exceed 4 GHz. Verify RoHS compliance requirements before selection.

For new designs or applications requiring active product status and full RoHS3 compliance: Retain Amphenol RF 122114 as the primary component selection.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 5225555-2 directly replace the Amphenol RF 122114 in existing assemblies?

A: Yes, the 5225555-2 qualifies as a direct substitute based on matching connector style (TNC), impedance (50 ohms), termination method (crimp), mounting type (free-hanging), fastening type (threaded), frequency capability (11 GHz), voltage rating (500 V), and mating cycles (500). Physical dimensions and mating interfaces are compatible. However, verify that product obsolescence status does not conflict with supply chain requirements.

Q: What are the key differences between the Amphenol RF 122114 and TE Connectivity 227079-7?

A: The primary differences are connector style (TNC versus BNC), fastening mechanism (threaded versus bayonet lock), maximum frequency (11 GHz versus 4 GHz), and dielectric material (POM acetal versus polyethylene). Both maintain 50-ohm impedance, crimp termination, and 500 V voltage rating. The 227079-7 is suitable only for applications where BNC connector style is acceptable and frequency requirements do not exceed 4 GHz.

Q: Are there cable compatibility differences between these connectors?

A: Yes. The Amphenol RF 122114 supports RG-59 Plenum, Belden 1560A, 82259, 88241, and 89259 cable groups. The TE Connectivity 5225555-2 supports RG-58A and 58C cable groups. The TE Connectivity 227079-7 supports RG-59, 59A, 59B, 62, 62A, and 62B cable groups. Cable compatibility must be verified before substitution to ensure proper impedance matching and mechanical fit.

Q: What is the significance of the product status difference between these parts?

A: The Amphenol RF 122114 is classified as Active, indicating current manufacturing and ongoing supply availability. The TE Connectivity 5225555-2 is classified as Obsolete, indicating discontinued manufacturing. Obsolete status means existing inventory may be available but future procurement is not guaranteed. For applications requiring long-term supply security, the Active status of the 122114 is preferable.

Q: Does RoHS compliance status affect substitution decisions?

A: Yes. The Amphenol RF 122114 is ROHS3 Compliant, and the TE Connectivity 5225555-2 is RoHS Compliant. The TE Connectivity 227079-7 is RoHS non-compliant. Applications subject to RoHS regulations or customer requirements must use compliant parts. The 227079-7 is unsuitable for regulated applications requiring RoHS compliance.

Q: What insertion loss differences exist between these connectors?

A: The Amphenol RF 122114 specifies 0.18 dB insertion loss. The TE Connectivity 227079-7 specifies 0.2 dB insertion loss. The TE Connectivity 5225555-2 does not specify insertion loss. For applications with strict insertion loss requirements, the 122114 provides the lowest specified loss. The 227079-7 insertion loss difference of 0.02 dB may be significant in high-frequency or cascaded applications.

Q: Can the TE Connectivity 227079-7 be used in applications designed for the Amphenol RF 122114?

A: Only if the application meets all of the following conditions: the connector interface can accommodate BNC style, the operating frequency does not exceed 4 GHz, RoHS non-compliance is acceptable, and the bayonet lock fastening mechanism is compatible with the mating interface. If any of these conditions cannot be met, the 227079-7 is not suitable.

Q: What dielectric material differences exist, and do they affect performance?

A: The Amphenol RF 122114 uses Polyoxymethylene (POM) Acetal dielectric. The TE Connectivity 5225555-2 uses Polytetrafluoroethylene (PTFE) dielectric. The TE Connectivity 227079-7 uses Polyethylene (PE) dielectric. PTFE provides superior high-frequency performance and extended temperature range. POM acetal and PE are suitable for standard RF applications. Material selection affects frequency response, temperature stability, and dielectric loss characteristics.