Amphenol RF 112740-12 BNC Coaxial Connector Equivalent & Substitute Parts

Part Overview

The Amphenol RF 112740-12 is an active BNC connector jack (female socket) rated for 75 ohms impedance, designed for board edge and end launch panel mount applications with solder termination. This component is used in RF and coaxial signal transmission systems requiring bayonet lock fastening and bulkhead mounting configurations. The part is ROHS3 compliant and REACH affected, with unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, inventory management, or supply chain continuity.

Substiute Parts

112740-12

Amphenol RFIn Stock: 1129112740-12 Datasheet

Current PartRFQ

UCBBJE20-1

Cinch Connectivity Solutions TrompeterIn Stock: 7138UCBBJE20-1 Datasheet

Parametric EquivalentRFQ

UCBBJE20-3

Cinch Connectivity Solutions TrompeterIn Stock: 1664UCBBJE20-3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Amphenol RF 112740-12 are identified based on strict electrical and mechanical parameter equivalence. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Connector Style: BNC
• Connector Type: Jack, Female Socket
• Impedance: 75 Ohms
• Mounting Type: Board Edge, End Launch; Panel Mount
• Mounting Feature: Bulkhead - Front Side Nut
• Contact Termination: Solder
• Shield Termination: Solder
• Fastening Type: Bayonet Lock
• Frequency - Max: 4 GHz
• Operating Temperature Range: -65°C ~ 165°C
• Voltage Rating: 500 V
• Body Material: Brass
• Body Finish: Gold
• Center Contact Plating: Gold
• Dielectric Material: PTFE
• Number of Ports: 1
• RoHS Status: ROHS3 Compliant
• MSL Rating: 1 (Unlimited)
• REACH Status: REACH Affected

The substitute parts UCBBJE20-1 and UCBBJE20-3 (both manufactured by Cinch Connectivity Solutions Trompeter) meet all critical electrical and mechanical parameters required for direct substitution with the Amphenol RF 112740-12.

Parameter Comparison

Engineering Selection Recommendations

Both Cinch Connectivity Solutions Trompeter substitute parts (UCBBJE20-1 and UCBBJE20-3) are active products with full ROHS3 compliance and REACH affected status, matching the regulatory and compliance profile of the Amphenol RF 112740-12. All three parts are electrically and mechanically equivalent across all specified parameters, including impedance, frequency rating, operating temperature range, voltage rating, and mounting configuration.

Selection between the Amphenol RF 112740-12 and either Cinch substitute part is determined by availability, lead time, and supply chain requirements. The Cinch UCBBJE20-1 and UCBBJE20-3 parts are functionally interchangeable with the Amphenol RF 112740-12 for all applications requiring 75 ohm BNC jack connectors with board edge panel mount solder termination.

Frequently Asked Questions (FAQ)

Q: Can UCBBJE20-1 and UCBBJE20-3 be used interchangeably with Amphenol RF 112740-12?

A: Yes. Both Cinch parts meet all electrical and mechanical parameters specified for the Amphenol RF 112740-12, including impedance, frequency rating, operating temperature, voltage rating, mounting type, and termination method. They are direct substitutes.

Q: What are the key electrical parameters that must match for substitution?

A: The critical electrical parameters are impedance (75 Ohms), maximum frequency (4 GHz), voltage rating (500 V), and dielectric material (PTFE). All substitute parts match these specifications.

Q: Are there differences in mechanical mounting between the main part and substitutes?

A: No. All parts use identical mounting configurations: board edge, end launch, panel mount with bulkhead front side nut and bayonet lock fastening.

Q: Do the substitute parts have the same termination method?

A: Yes. All parts use solder termination for both contact and shield, with identical body material (brass), body finish (gold), and center contact plating (gold).

Q: Are compliance and regulatory certifications equivalent across all three parts?

A: Yes. The Amphenol RF 112740-12 and both Cinch substitute parts are ROHS3 compliant, REACH affected, and carry MSL 1 (Unlimited) rating.

Q: What is the difference between UCBBJE20-1 and UCBBJE20-3?

A: Both parts are electrically and mechanically identical. The numeric suffix (-1 and -3) indicates different manufacturing or packaging variants within the Cinch UCBBJE20 series, but they are functionally equivalent for all application purposes.

Q: Are there any performance differences in insertion loss or mating cycles?

A: The Amphenol RF 112740-12 specifies 0.2 dB insertion loss and 500 mating cycles. The Cinch substitute parts do not provide these specifications in the available data. For applications where these parameters are critical, direct confirmation with the manufacturer is required.

Q: Can these parts be used in the same PCB layout without modification?

A: Yes. All parts share identical mounting type (board edge, end launch), mounting feature (bulkhead front side nut), and fastening type (bayonet lock), allowing direct substitution in existing PCB designs.