TE Connectivity AMP Connectors 5221185-9 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 5221185-9 is a BNC Connector Plug with male pin configuration, designed for 75 Ohm coaxial applications in free-hanging (in-line) installations. This connector features crimp termination for both center contact and shield, supporting RG-59 cable group with a maximum frequency rating of 2 GHz and bayonet lock fastening.

The 5221185-9 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or field replacement requirements for systems utilizing this connector specification.

Substiute Parts

5221185-9

TE Connectivity AMP ConnectorsIn Stock: 8515221185-9 Datasheet

Current PartRFQ

031-80108

Amphenol RFIn Stock: 817031-80108 Datasheet

SimilarRFQ

112119

Amphenol RFIn Stock: 1071112119 Datasheet

SimilarRFQ

112955-11

Amphenol RFIn Stock: 2610112955-11 Datasheet

SimilarRFQ

122391

Amphenol RFIn Stock: 1153122391 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 5221185-9 is determined by strict adherence to the following critical parameters:

Primary Substitution Criteria:

• Connector Style: BNC (bayonet lock fastening type)
• Connector Type: Plug, Male Pin
• Impedance: 75 Ohms
• Contact Termination: Crimp
• Shield Termination: Crimp
• Mounting Type: Free Hanging (In-Line)
• Voltage Rating: 500 V
• Mating Cycles: 500

Secondary Compatibility Factors:

• Operating Temperature range (minimum -55°C required)
• Frequency rating (minimum 2 GHz required)
• Cable group compatibility (RG-59 or equivalent)
• Center contact material and plating specifications
• Body material and finish specifications

Substitute parts must satisfy all primary criteria. Variations in secondary factors are acceptable when the substitute part meets or exceeds the original specification. Parts with different connector styles (such as TNC) or different fastening mechanisms are not direct substitutes despite sharing other electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Direct BNC Substitutes (Bayonet Lock Configuration):

The Amphenol RF 031-80108, 112119, and 112955-11 are direct functional equivalents to the TE Connectivity 5221185-9. All three parts maintain the critical BNC connector style with bayonet lock fastening, 75 Ohm impedance, crimp termination, and 500 V voltage rating.

031-80108 (Amphenol RF): This part is classified as Active and represents the primary recommended substitute. It exceeds the original specification in frequency rating (4 GHz versus 2 GHz) and operating temperature range (-65°C ~ 165°C versus -55°C ~ 85°C). The part is ROHS3 compliant and REACH affected. Insertion loss is 0.2 dB, marginally higher than the original 0.15 dB specification.

112955-11 (Amphenol RF): This part is classified as Active and offers the highest frequency rating (6 GHz) among BNC substitutes. Operating temperature range is -65°C ~ 165°C. The part is ROHS3 compliant and REACH affected. Insertion loss is 0.2 dB. This part is suitable for applications requiring extended frequency performance.

112119 (Amphenol RF): This part is classified as Not For New Designs. While it maintains all critical electrical parameters and is ROHS3 compliant, its status restricts use to legacy system support and field replacement scenarios only. Operating temperature range is not specified.

Non-Direct Substitute:

The Amphenol RF 122391 is a TNC connector plug, not a BNC connector. Despite sharing 75 Ohm impedance, crimp termination, and 500 V voltage rating, the TNC threaded fastening mechanism is mechanically incompatible with BNC bayonet lock mating interfaces. This part is not a substitute for the 5221185-9 in applications requiring BNC connectivity.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 031-80108 be used as a direct replacement for the TE Connectivity 5221185-9?

A: Yes. The 031-80108 maintains all critical electrical and mechanical parameters: BNC connector style, bayonet lock fastening, 75 Ohm impedance, crimp termination, 500 V voltage rating, and 500 mating cycles. The part exceeds the original specification in frequency rating and operating temperature range. Active product status supports ongoing availability.

Q: What is the difference between the 112119 and 112955-11 substitutes?

A: Both parts are BNC connectors with 75 Ohm impedance and crimp termination. The primary differences are: (1) 112955-11 is Active status while 112119 is Not For New Designs; (2) 112955-11 supports 6 GHz maximum frequency versus 4 GHz for 112119; (3) 112955-11 specifies operating temperature range of -65°C ~ 165°C while 112119 does not specify this parameter; (4) 112955-11 is packaged in bulk while 112119 is bagged.

Q: Why is the Amphenol RF 122391 listed but not recommended as a substitute?

A: The 122391 is a TNC connector, not a BNC connector. The TNC uses threaded fastening while the 5221185-9 uses bayonet lock fastening. These are mechanically incompatible mating interfaces. Although both are 75 Ohm connectors with crimp termination, the different connector style makes the 122391 unsuitable for direct substitution in applications designed for BNC connectivity.

Q: What is the significance of the insertion loss difference between the original part and substitutes?

A: The TE Connectivity 5221185-9 specifies 0.15 dB insertion loss. The Amphenol RF substitutes (031-80108, 112955-11) specify 0.2 dB insertion loss. This 0.05 dB difference is within typical manufacturing tolerances for coaxial connectors and does not constitute a functional incompatibility. Applications operating at 2 GHz or below will not experience performance degradation from this marginal increase.

Q: Are all substitute parts RoHS compliant?

A: Yes. The TE Connectivity 5221185-9 is RoHS Compliant. All recommended Amphenol RF substitutes (031-80108, 112119, 112955-11) are ROHS3 Compliant, which represents an enhanced compliance standard. The 122391 is also ROHS3 Compliant.

Q: What cable groups are compatible with each substitute?

A: The 5221185-9 supports RG-59 cable group. The 031-80108 supports Belden 8281. The 112119 supports RG-59, 59B, 62, 140, 210, and Belden 8241, 8263, 8279, 9209. The 112955-11 supports RG-122, 180, 180A, 180B, 195, and Belden 1855, 1865A. Cable group compatibility must be verified for specific application requirements.

Q: Can the 112119 be used in new designs?

A: No. The 112119 is classified as Not For New Designs. This part is restricted to legacy system support and field replacement applications only. For new designs, use the 031-80108 or 112955-11, both of which are Active status.

Q: What is the operating temperature range difference between the original and substitutes?

A: The TE Connectivity 5221185-9 operates from -55°C to 85°C. The Amphenol RF 031-80108 and 112955-11 both operate from -65°C to 165°C, providing extended low-temperature and high-temperature capability. The 112119 does not specify an operating temperature range. For applications requiring the original temperature range, all three BNC substitutes are acceptable.