Amphenol RF 112503 BNC Connector Jack Equivalent & Substitute Parts

Part Overview

The Amphenol RF 112503 is an active BNC connector jack designed for coaxial RF applications. This female socket connector features right-angle panel mount configuration with through-hole solder termination and 75 ohm impedance rating. The connector is suitable for PCB integration in RF signal distribution systems requiring bayonet lock fastening and board lock features.

Substitute parts are identified when equivalent mechanical mounting, electrical performance within specified parameters, and connector interface standards are maintained across alternative part numbers from the same manufacturer.

Substiute Parts

112503

Amphenol RFIn Stock: 1176112503 Datasheet

Current PartRFQ

112487

Amphenol RFIn Stock: 1574112487 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute part identification for the Amphenol RF 112503 is based on the following criteria:

Maintained Parameters (Required for Substitution):

• Connector style: BNC
• Connector type: Jack, Female Socket
• Mounting configuration: Panel Mount, Through Hole, Right Angle
• Contact termination method: Solder
• Shield termination method: Solder
• Fastening mechanism: Bayonet Lock
• Frequency maximum: 4 GHz
• Voltage rating: 500 V
• Mating cycles: 500
• Housing material and finish: Zinc Die Cast with Nickel finish
• Center contact material and plating: Phosphor Bronze with Gold plating
• Dielectric material: Polypropylene (PP)
• Board lock feature: Present
• Regulatory compliance: ROHS3 Compliant, REACH Affected

Variable Parameter (Distinguishes Substitute):

• Impedance: 50 Ohms (substitute) versus 75 Ohms (main part)

The Amphenol RF 112487 is identified as a parametric equivalent with the primary distinction being impedance specification. All other electrical, mechanical, and environmental parameters remain consistent with the main part.

Parameter Comparison

Engineering Selection Recommendations

Both the Amphenol RF 112503 and 112487 maintain active product status with full ROHS3 compliance and REACH regulatory adherence. Selection between these parts is determined by system impedance requirements.

The 112503 operates at 75 ohm impedance and is specified for applications requiring this characteristic impedance standard. The 112487 operates at 50 ohm impedance and is specified for applications requiring this characteristic impedance standard.

Mechanical compatibility, electrical performance within frequency and voltage specifications, and connector interface standards are equivalent across both parts. Substitution is valid only when the target system impedance specification matches the selected part's impedance rating.

Frequently Asked Questions (FAQ)

Q: Can the 112487 (50 Ohm) be used as a direct replacement for the 112503 (75 Ohm)?

A: Direct substitution is not valid. While both connectors share identical mechanical mounting, termination methods, and frequency specifications, impedance is a critical electrical parameter. The 112503 is specified for 75 ohm systems, and the 112487 is specified for 50 ohm systems. Using a 50 ohm connector in a 75 ohm system creates impedance mismatch and signal reflection.

Q: What are the key parameters that remain identical between these parts?

A: Both connectors maintain identical specifications for connector style (BNC), connector type (Jack, Female Socket), mounting configuration (Panel Mount, Through Hole, Right Angle), contact and shield termination (Solder), fastening type (Bayonet Lock), maximum frequency (4 GHz), voltage rating (500 V), mating cycles (500), housing material (Zinc Die Cast with Nickel finish), center contact material (Phosphor Bronze with Gold plating), and dielectric material (Polypropylene).

Q: Are both parts available in the same packaging?

A: Yes. Both the 112503 and 112487 are supplied in bag packaging format.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 compliant and REACH affected, meeting equivalent regulatory standards for electronic component distribution.

Q: What is the primary distinguishing factor between these two connectors?

A: The primary distinguishing factor is impedance specification. The 112503 is rated at 75 ohms, while the 112487 is rated at 50 ohms. This impedance difference determines which system application each connector is suitable for and prevents direct substitution between the two parts.