Amphenol RF 031-70013 BNC Connector Plug 75 Ohm Crimp Equivalent & Substitute Parts

Part Overview

The Amphenol RF 031-70013 is a BNC connector plug with male pin configuration, designed for 75 ohm coaxial cable applications. This free-hanging (in-line) crimp connector operates at frequencies up to 4 GHz and is rated for 500 volts with 500 mating cycles. The part is currently active in production status with 903 pieces in stock inventory.

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives from different manufacturers. The following equivalent and substitute parts maintain the core electrical and mechanical characteristics required for 75 ohm BNC plug applications.

Key Parameters

Parameter	Specification
Connector Style	BNC
Connector Type	Plug, Male Pin
Impedance	75 Ohms
Contact Termination	Crimp
Shield Termination	Crimp
Mounting Type	Free Hanging (In-Line)
Fastening Type	Bayonet Lock
Frequency Maximum	4 GHz
Voltage Rating	500 V
Mating Cycles	500
Operating Temperature Range	-65°C to 165°C
Body Material	Brass
Body Finish	Nickel
Center Contact Plating	Gold
Dielectric Material	Polytetrafluoroethylene (PTFE)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of BNC connector plugs is determined by strict adherence to the following parameters:

Primary Substitution Criteria (Must Match):

Connector Style: BNC
Connector Type: Plug, Male Pin
Impedance: 75 Ohms
Contact Termination: Crimp
Shield Termination: Crimp
Mounting Type: Free Hanging (In-Line)
Fastening Type: Bayonet Lock
Voltage Rating: 500 V
Mating Cycles: 500

Secondary Compatibility Parameters:

Frequency Maximum: 4 GHz or higher
Operating Temperature Range: Must encompass or match -65°C to 165°C
Cable Group compatibility for intended application
RoHS and REACH compliance status

Packaging Variations Allowed:

Bulk or Bag packaging formats are interchangeable for the same electrical specification
Included component quantities may vary (connector, contact, ferrule, insulator/sleeve)

Parts Grouped by Substitution Status:

Parametric Equivalents (Amphenol RF): Parts 112133, 112139, and 112954 maintain identical BNC 75 ohm plug specifications with variations in dielectric material (POM Acetal versus PTFE), operating temperature ranges, and included components.

Direct Manufacturer Alternative (Winchester Interconnect): Part 310A205MV is a 50 ohm BNC plug and is not a direct substitute due to impedance mismatch.

Similar Alternatives (TE Connectivity AMP Connectors): Parts 221185-8, 413589-8, and 5221185-8 are 75 ohm BNC plugs with reduced frequency maximum (2 GHz) and different body materials (Zinc or Zinc Die Cast).

Similar Alternatives (Cinch Connectivity Solutions Trompeter): Parts UPL220-009, UPL220-013, and UPL220-025 are 75 ohm BNC plugs with 4 GHz frequency rating and PTFE dielectric, differentiated by cable group compatibility.

Parameter Comparison

Part Number	Manufacturer	Impedance	Frequency Max	Dielectric	Operating Temp	Body Material	Product Status	RoHS Status	Packaging
031-70013	Amphenol RF	75 Ohm	4 GHz	PTFE	-65°C to 165°C	Brass	Active	ROHS3 Compliant	Bulk
112133	Amphenol RF	75 Ohm	4 GHz	POM Acetal	Not Specified	Brass	Active	ROHS3 Compliant	Bag
112139	Amphenol RF	75 Ohm	4 GHz	POM Acetal	-55°C to 85°C	Brass	Not For New Designs	ROHS3 Compliant	Bag
112954	Amphenol RF	75 Ohm	4 GHz	PTFE	Not Specified	Brass	Not For New Designs	ROHS3 Compliant	Bag
310A205MV	Winchester Interconnect	50 Ohm	4 GHz	Not Specified	-40°C to 165°C	Brass	Active	RoHS Compliant	Bulk
221185-8	TE Connectivity AMP	75 Ohm	2 GHz	Polyethylene (PE)	-55°C to 85°C	Zinc	Obsolete	RoHS Non-Compliant	Not Specified
413589-8	TE Connectivity AMP	75 Ohm	2 GHz	Polyethylene (PE)	-55°C to 85°C	Zinc	Active	RoHS Non-Compliant	Not Specified
5221185-8	TE Connectivity AMP	75 Ohm	2 GHz	Polyethylene (PE)	-55°C to 85°C	Zinc Die Cast	Obsolete	RoHS Compliant	Not Specified
UPL220-009	Cinch Connectivity Trompeter	75 Ohm	4 GHz	PTFE	-65°C to 165°C	Brass	Active	ROHS3 Compliant	Bulk
UPL220-013	Cinch Connectivity Trompeter	75 Ohm	4 GHz	PTFE	-65°C to 165°C	Brass	Active	ROHS3 Compliant	Bulk
UPL220-025	Cinch Connectivity Trompeter	75 Ohm	4 GHz	PTFE	-65°C to 165°C	Brass	Active	ROHS3 Compliant	Bulk

Engineering Selection Recommendations

Recommended Primary Substitutes (Active Status, Full Compliance):

Amphenol RF 112133 is the preferred substitute when packaging format change from Bulk to Bag is acceptable. This part maintains identical electrical specifications (75 ohm, 4 GHz, PTFE dielectric, 500V, 500 mating cycles) and is currently in active production status with ROHS3 compliance. The primary difference is dielectric material specification (POM Acetal versus PTFE) and operating temperature range not specified in documentation.

Cinch Connectivity Solutions Trompeter UPL220-009, UPL220-013, and UPL220-025 are active production alternatives with matching electrical specifications (75 ohm, 4 GHz, PTFE dielectric, 500V). These parts differ by cable group compatibility (Belden 8218/YR23023/Essex 21-597 for UPL220-009; RG-59 for UPL220-013; 734A for UPL220-025). Selection among these three variants depends on intended cable application.

Not Recommended for New Designs:

Amphenol RF 112139 and 112954 carry "Not For New Designs" product status designation. While electrically compatible, these parts should not be selected for new circuit designs.

Not Suitable (Impedance Mismatch):

Winchester Interconnect 310A205MV is a 50 ohm BNC plug and cannot substitute for the 75 ohm 031-70013 due to impedance incompatibility.

Limited Substitution (Reduced Frequency, Obsolete Status):

TE Connectivity AMP Connectors parts 221185-8, 413589-8, and 5221185-8 operate at reduced maximum frequency (2 GHz versus 4 GHz) and are either obsolete or non-compliant with current RoHS standards. These parts are suitable only for legacy system maintenance where frequency requirements do not exceed 2 GHz and RoHS compliance is not mandated.

Frequently Asked Questions (FAQ)

Q: Can Amphenol RF 112133 directly replace 031-70013 in production assemblies?

A: Yes, with packaging format consideration. Both parts are 75 ohm BNC plugs with identical electrical specifications (4 GHz, 500V, 500 mating cycles, PTFE dielectric, crimp termination). The primary difference is packaging (Bulk versus Bag) and dielectric material specification. Verify that POM Acetal dielectric in part 112133 meets application requirements if PTFE was originally specified.

Q: Why is Winchester Interconnect 310A205MV listed if it cannot substitute?

A: Part 310A205MV is included for reference to clarify impedance requirements. This 50 ohm connector is not compatible with 75 ohm systems and cannot be used as a substitute. Impedance mismatch causes signal reflection and system performance degradation.

Q: What is the difference between Cinch UPL220 variants (009, 013, 025)?

A: All three UPL220 variants share identical electrical specifications (75 ohm, 4 GHz, PTFE, 500V, -65°C to 165°C). The variants differ only in cable group compatibility: UPL220-009 for Belden 8218/YR23023/Essex 21-597; UPL220-013 for RG-59; UPL220-025 for 734A cable. Select the variant matching your intended cable type.

Q: Are TE Connectivity parts 221185-8, 413589-8, and 5221185-8 acceptable for new designs?

A: No. These parts operate at 2 GHz maximum frequency (versus 4 GHz for the primary part) and carry either obsolete status or RoHS non-compliance. Use only for legacy system maintenance where frequency requirements do not exceed 2 GHz and RoHS compliance is not required.

Q: What does "Not For New Designs" mean for Amphenol RF 112139 and 112954?

A: This designation indicates the manufacturer has discontinued these parts for new applications. While electrically functional and in stock inventory, these parts should not be selected for new circuit designs. Use active production alternatives such as 112133 or Cinch UPL220 series instead.

Q: How do operating temperature ranges affect substitution?

A: The primary part 031-70013 operates from -65°C to 165°C. Substitute parts must either match this range or operate within a subset of these temperatures. Amphenol RF 112139 and TE Connectivity parts operate only to -55°C to 85°C, limiting use in applications requiring full -65°C to 165°C range. Cinch UPL220 series matches the full temperature range.

Q: Can dielectric material differences (PTFE versus POM Acetal) affect performance?

A: Dielectric material affects electrical properties including capacitance and loss characteristics. PTFE (Teflon) provides superior high-frequency performance and temperature stability. POM Acetal (Delrin) offers different mechanical properties. Verify that application specifications allow material substitution before selecting parts with different dielectric materials.

Q: What is the significance of RoHS and REACH compliance status?

A: ROHS3 compliance indicates the part meets European Union Restriction of Hazardous Substances Directive requirements. REACH Affected status indicates the part is subject to EU REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulations. For applications requiring regulatory compliance, select parts with matching or superior compliance status. The primary part 031-70013 is ROHS3 Compliant and REACH Affected.

Q: Are there inventory considerations when selecting substitutes?

A: Yes. Current inventory levels are: 031-70013 (903 pcs), 112133 (1597 pcs), 112139 (1119 pcs), 112954 (1249 pcs), UPL220-009 (1162 pcs), UPL220-013 (1558 pcs), UPL220-025 (914 pcs). Higher inventory levels may indicate preferred supplier status or longer production runs. Verify supplier lead times and minimum order quantities for your procurement timeline.

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