Amphenol RF 31-10 BNC Connector Jack Equivalent & Substitute Parts

Part Overview

The Amphenol RF 31-10 is a BNC connector jack (female socket) rated for 50 ohms impedance with solder cup termination and panel mount configuration. This component is designed for RF coaxial applications requiring bayonet lock fastening and operates across a temperature range of -55°C to 85°C with a maximum frequency rating of 4 GHz. The part is currently active in production status and ROHS3 compliant.

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative manufacturers are required for supply chain diversification, or when extended operating temperature ranges or enhanced material specifications are needed for specific application requirements.

Key Parameters

Parameter	Specification
Connector Style	BNC
Connector Type	Jack, Female Socket
Impedance	50 Ohms
Contact Termination	Solder Cup
Shield Termination	Solder
Mounting Type	Panel Mount
Mounting Feature	Bulkhead - Rear Side Nut
Fastening Type	Bayonet Lock
Frequency - Max	4 GHz
Number of Ports	1
Voltage Rating	500 V
Mating Cycles	500
Operating Temperature	-55°C ~ 85°C

Substitute Part Grouping Explanation

Substitution of BNC connector jacks is determined by strict equivalence across the following critical parameters: connector style (BNC), connector type (jack/female socket), impedance rating (50 ohms), contact termination method (solder cup), shield termination (solder), mounting configuration (panel mount bulkhead), fastening mechanism (bayonet lock), frequency capability (4 GHz maximum), voltage rating (500 V), and mating cycle rating (500 cycles).

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in secondary parameters such as body material composition, center contact plating, dielectric material, and operating temperature range do not preclude substitution when the primary functional parameters remain constant. Product status (active versus obsolete) and compliance certifications (ROHS3, RoHS, REACH) are documented to support engineering selection decisions based on supply availability and regulatory requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Connector Style	Connector Type	Impedance	Contact Termination	Mounting Type	Frequency - Max	Voltage Rating	Operating Temperature	Product Status	RoHS Status
31-10	Amphenol RF	BNC	Jack, Female Socket	50 Ohms	Solder Cup	Panel Mount	4 GHz	500 V	-55°C ~ 85°C	Active	ROHS3 Compliant
31-10-RFX	Amphenol RF	BNC	Jack, Female Socket	50 Ohms	Solder Cup	Panel Mount	4 GHz	500 V	-65°C ~ 165°C	Active	ROHS3 Compliant
5-1634504-1	TE Connectivity AMP Connectors	BNC	Jack, Female Socket	50 Ohms	Solder Cup	Panel Mount	4 GHz	500 V	-55°C ~ 85°C	Obsolete	RoHS Compliant
5227726-1	TE Connectivity AMP Connectors	BNC	Jack, Female Socket	50 Ohms	Solder Cup	Panel Mount	4 GHz	500 V	-65°C ~ 165°C	Active	RoHS Compliant
5227726-2	TE Connectivity AMP Connectors	BNC	Jack, Female Socket	50 Ohms	Solder Cup	Panel Mount	4 GHz	500 V	-65°C ~ 165°C	Active	ROHS3 Compliant
5227726-3	TE Connectivity AMP Connectors	BNC	Jack, Female Socket	50 Ohms	Solder Cup	Panel Mount	4 GHz	500 V	-65°C ~ 165°C	Active	RoHS non-compliant
BJ27	Cinch Connectivity Solutions Trompeter	BNC	Jack, Female Socket	50 Ohms	Solder Cup	Panel Mount	4 GHz	500 V	-65°C ~ 165°C	Active	ROHS3 Compliant
3778	Pomona Electronics	BNC	Jack, Female Socket	50 Ohms	Solder Cup	Panel Mount	Not specified	500 V	Not specified	Active	Not applicable
1-1337447-0	TE Connectivity AMP Connectors	BNC	Jack, Female Socket	50 Ohms	Solder Cup	Panel Mount	4 GHz	500 V	-40°C ~ 60°C	Active	RoHS Compliant
1-1337452-0	TE Connectivity AMP Connectors	BNC	Jack, Female Socket	50 Ohms	Solder Cup	Panel Mount	4 GHz	500 V	-40°C ~ 60°C	Active	ROHS3 Compliant
5148	Pomona Electronics	BNC	Jack, Female Socket	50 Ohms	Solder Cup	Panel Mount	4 GHz	500 V	Not specified	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Equivalent (Same Manufacturer): The 31-10-RFX from Amphenol RF is a parametric equivalent offering identical electrical and mechanical specifications to the 31-10, with the advantage of an extended operating temperature range (-65°C ~ 165°C versus -55°C ~ 85°C). Both parts are ROHS3 compliant and active in production status.

Active Production Alternatives (Multi-Source Strategy): The TE Connectivity AMP Connectors parts 5227726-1, 5227726-2, and 5227726-3 are all active production parts with extended temperature ratings (-65°C ~ 165°C). Part 5227726-2 is ROHS3 compliant. These parts provide supply chain redundancy from a major connector manufacturer.

Extended Temperature Range Options: For applications requiring operation beyond the standard -55°C ~ 85°C range, the 31-10-RFX, 5227726 series, and BJ27 all support -65°C ~ 165°C operation.

Restricted Temperature Range Alternatives: The TE Connectivity parts 1-1337447-0 and 1-1337452-0 operate within a narrower temperature range (-40°C ~ 60°C) and are suitable only for applications within this specification window.

Obsolete Part Consideration: The TE Connectivity 5-1634504-1 is marked as obsolete and should not be selected for new designs, though it remains available in inventory.

Non-Compliant Parts: The 5227726-3 is RoHS non-compliant and should be avoided in applications requiring RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can the 31-10-RFX be used as a direct replacement for the 31-10?

A: Yes. The 31-10-RFX maintains all critical electrical and mechanical parameters: BNC connector style, 50-ohm impedance, solder cup termination, panel mount configuration, 4 GHz frequency rating, 500 V voltage rating, and 500 mating cycles. The extended operating temperature range (-65°C ~ 165°C) provides additional capability without compromising compatibility.

Q: What is the difference between the 5227726-1, 5227726-2, and 5227726-3 variants?

A: These three TE Connectivity parts differ in center contact plating material and RoHS compliance status. The 5227726-1 features tin plating, 5227726-2 features silver plating (ROHS3 compliant), and 5227726-3 features gold plating (RoHS non-compliant). All three share identical electrical specifications and extended temperature operation.

Q: Are there any frequency limitations with the Pomona Electronics alternatives (3778 and 5148)?

A: The Pomona Electronics parts 3778 and 5148 do not specify maximum frequency in the provided data. The 31-10 and most TE Connectivity alternatives are rated to 4 GHz. Frequency specification should be confirmed with the manufacturer before selection for frequency-critical applications.

Q: Which substitute parts are suitable for high-temperature applications?

A: The 31-10-RFX, 5227726-1, 5227726-2, 5227726-3, and BJ27 all support operation to 165°C maximum. The 31-10, 5-1634504-1, 1-1337447-0, and 1-1337452-0 are limited to 85°C or 60°C maximum.

Q: What is the significance of ROHS3 compliance versus RoHS compliance?

A: ROHS3 represents the current Restriction of Hazardous Substances directive compliance standard. Parts marked ROHS3 compliant meet the latest regulatory requirements. Parts marked only as RoHS compliant may not meet current ROHS3 standards. For new designs, ROHS3 compliant parts are recommended.

Q: Can I substitute a part with a different body material (brass versus zinc alloy)?

A: Yes. The body material (brass, zinc, or zinc alloy) does not affect the electrical performance or mechanical compatibility of the BNC connector jack. Material selection is driven by cost, corrosion resistance, and manufacturing considerations rather than functional substitution criteria.

Q: Is the BJ27 from Cinch Connectivity a suitable alternative?

A: Yes. The BJ27 meets all critical specifications: BNC style, 50-ohm impedance, solder cup termination, panel mount configuration, 4 GHz frequency rating, 500 V voltage rating, and extended temperature operation (-65°C ~ 165°C). It is ROHS3 compliant and active in production.

Q: Why is the 5-1634504-1 marked as obsolete if it is still in inventory?

A: Obsolete status indicates that the manufacturer has discontinued production. Existing inventory may remain available for a limited period, but the part should not be selected for new designs. Active production alternatives should be used instead.

Q: What packaging options are available?

A: The 31-10 is supplied in bulk packaging. The TE Connectivity 5227726 series is supplied in tray packaging. Pomona Electronics and Cinch Connectivity parts are supplied in bulk packaging. Packaging selection depends on assembly process requirements and order quantities.

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