Amphenol RF 112405-12 BNC Straight PCB Jack Equivalent & Substitute Parts

Part Overview

The Amphenol RF 112405-12 is a BNC connector jack designed for through-hole PCB mounting with female socket termination. This 75 Ohm coaxial connector operates at frequencies up to 4 GHz and is rated for solder contact and shield termination. The part is currently active in production with 1061 units in stock. Substitute parts are identified to address inventory availability, extended lead times, or specific application requirements while maintaining electrical and mechanical compatibility within defined parameter ranges.

Key Parameters

Parameter	Value
Manufacturer Part Number	112405-12
Manufacturer	Amphenol RF
Connector Style	BNC
Connector Type	Jack, Female Socket
Impedance	75 Ohms
Mounting Type	Through Hole
Contact Termination	Solder
Shield Termination	Solder
Fastening Type	Bayonet Lock
Frequency - Max	4 GHz
Number of Ports	1
Operating Temperature Range	-65°C ~ 165°C
Mating Cycles	500
RoHS Status	ROHS3 Compliant
REACH Status	REACH Affected

Substitute Part Grouping Explanation

Substitute parts for the Amphenol RF 112405-12 are categorized based on impedance matching and electrical compatibility. The primary substitution criterion is impedance specification, as this parameter directly determines signal integrity and system performance in RF applications.

Exact Impedance Match (75 Ohms): Parts with 75 Ohm impedance maintain identical electrical characteristics and are direct functional equivalents. These include Amphenol RF 031-5329-72RFX and Rosenberger 71K101-400A5. Both connectors share the same BNC jack configuration, through-hole mounting, solder termination, 4 GHz frequency rating, and 500 mating cycle specification.

Alternative Impedance (50 Ohms): Parts with 50 Ohm impedance represent a different impedance class. While these connectors share identical mechanical form factors, mounting types, and termination methods, they are electrically distinct and suitable only for applications designed for 50 Ohm systems. Substitute parts in this category include Amphenol RF 031-5329-51RFX and 031-5329-52RFX, as well as multiple TE Connectivity AMP Connectors models (1-1337445-0, 227699-1, 5221123-2, 5222420-1, 5413969-2, and 6274315-1).

All substitute parts maintain the following common parameters with the main part:

BNC connector style with bayonet lock fastening
Female socket jack configuration
Through-hole PCB mounting
Solder contact and shield termination
4 GHz maximum frequency rating
500 mating cycles
Single port configuration
Silver housing color
ROHS3 compliance and REACH affected status

Parameter Comparison

Parameter	112405-12 (Main)	031-5329-72RFX	031-5329-51RFX	031-5329-52RFX	1-1337445-0	5413969-2	71K101-400A5
Manufacturer	Amphenol RF	Amphenol RF	Amphenol RF	Amphenol RF	TE Connectivity	TE Connectivity	Rosenberger
Impedance (Ohms)	75	75	50	50	50	50	75
Connector Type	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket	Jack, Female Socket
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Contact Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shield Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Bayonet Lock	Bayonet Lock	Bayonet Lock	Bayonet Lock	Bayonet Lock	Bayonet Lock	Bayonet Lock
Frequency - Max (GHz)	4	4	4	4	4	4	4
Number of Ports	1	1	1	1	1	1	1
Mating Cycles	500	500	500	500	500	500	500
Operating Temperature Range	-65°C ~ 165°C	Not Specified	-20°C ~ 165°C	Not Specified	-65°C ~ 165°C	-55°C ~ 85°C	-65°C ~ 165°C
Voltage Rating (V)	Not Specified	500	500	500	500	500	400
Center Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Brass	Beryllium Copper	Beryllium Copper
Center Contact Plating	Gold	Gold	Silver	Gold	Silver	Gold	Gold
Body Material	Brass	Brass	Brass	Brass	Brass	Zinc	Brass
Body Finish	Nickel	Nickel	Nickel	Nickel	Silver	Tin	Nickel
Dielectric Material	PTFE	PBT, Polyester	PBT	PBT, Polyester	PTFE	PTFE	PTFE
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant
REACH Status	REACH Affected	REACH Affected	REACH Affected	REACH Affected	REACH Affected	REACH Affected	Not Specified

Engineering Selection Recommendations

For Direct Electrical Equivalence (75 Ohm Systems):

The Amphenol RF 031-5329-72RFX and Rosenberger 71K101-400A5 are the only substitute parts that maintain the 75 Ohm impedance specification of the main part. Both are ROHS3 compliant and REACH affected, matching the regulatory status of the 112405-12. The 031-5329-72RFX is manufactured by the same supplier as the main part and offers 1395 units in stock. The 71K101-400A5 provides an alternative from Rosenberger with 1209 units available and operates across the same temperature range (-65°C ~ 165°C) as the main part.

For 50 Ohm System Applications:

When system design requires 50 Ohm impedance, multiple substitute options are available. The TE Connectivity 1-1337445-0 offers the widest operating temperature range (-65°C ~ 165°C) matching the main part and uses PTFE dielectric material identical to the 112405-12. The TE Connectivity 5413969-2 provides the highest inventory availability with 5912 units in stock and maintains ROHS3 compliance. All 50 Ohm alternatives maintain the 4 GHz frequency rating, 500 mating cycle specification, and through-hole solder termination configuration.

Regulatory and Compliance Considerations:

All substitute parts listed carry ROHS3 compliance status. The main part and most substitutes are REACH affected. The Rosenberger 71K101-400A5 does not specify REACH status and should be evaluated against specific procurement requirements. Selection should account for supply chain preferences, inventory availability, and application-specific temperature and voltage requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a 50 Ohm BNC connector in place of the 75 Ohm 112405-12?

A: Substitution between 50 Ohm and 75 Ohm impedance classes is not recommended for applications requiring impedance matching. The impedance specification directly affects signal reflection, insertion loss, and system performance in RF circuits. Use 50 Ohm substitutes only in systems designed for 50 Ohm operation.

Q: What is the primary difference between the Amphenol RF 031-5329-72RFX and the main part 112405-12?

A: Both parts are 75 Ohm BNC jacks with identical impedance, frequency rating, and mounting configuration. The 031-5329-72RFX uses polybutylene terephthalate (PBT) and polyester dielectric materials, while the 112405-12 uses polytetrafluoroethylene (PTFE). Both are ROHS3 compliant and suitable for through-hole PCB assembly.

Q: Are all substitute parts rated for the same temperature range as the 112405-12?

A: No. The main part operates from -65°C to 165°C. The TE Connectivity 1-1337445-0 and Rosenberger 71K101-400A5 match this range. Other substitutes operate within narrower ranges, such as -20°C to 165°C (031-5329-51RFX) or -55°C to 85°C (5413969-2, 5221123-2, 5222420-1, 6274315-1, 227699-1). Verify temperature requirements before selection.

Q: What is the difference between center contact plating options (Gold vs. Silver)?

A: Both gold and silver plating provide corrosion resistance and electrical conductivity. The main part 112405-12 uses gold plating. Substitute parts with silver plating (031-5329-51RFX, 1-1337445-0, 227699-1, 5222420-1, 6274315-1) are functionally equivalent for RF applications. Selection may depend on specific environmental or contact resistance requirements.

Q: Can I substitute the Amphenol RF 031-5329-72RFX directly for the 112405-12 without PCB redesign?

A: Yes. Both parts share identical BNC connector style, through-hole mounting configuration, solder termination, and 75 Ohm impedance. The 031-5329-72RFX is a direct mechanical and electrical substitute. No PCB layout changes are required.

Q: What inventory levels should I consider when selecting a substitute?

A: The main part 112405-12 has 1061 units in stock. The 75 Ohm substitute 031-5329-72RFX has 1395 units available. For 50 Ohm alternatives, the TE Connectivity 5413969-2 offers the highest availability with 5912 units. Inventory levels should be evaluated against project lead times and supply chain requirements.

Q: Are all substitute parts suitable for PCB solder assembly?

A: Yes. All listed substitute parts specify solder contact and shield termination, making them compatible with standard PCB assembly processes. Through-hole mounting is consistent across all parts, supporting wave soldering or selective soldering methods.

Q: What is the voltage rating difference between the main part and substitutes?

A: The main part 112405-12 does not specify a voltage rating. Most substitutes are rated at 500 V, with the exception of the Rosenberger 71K101-400A5, which is rated at 400 V. For applications requiring voltage specifications, select parts with documented 500 V ratings.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message