UPL121 BNC Coaxial Connector - Equivalent & Substitute Parts

Part Overview

The UPL121 is a BNC connector plug manufactured by Cinch Connectivity Solutions Trompeter, designed for 75 Ohm RF applications. This male pin connector features a solder cup termination and panel mount configuration with bulkhead rear side nut fastening. The component is actively produced and maintained in inventory, with RoHS compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent mechanical and electrical characteristics allow direct replacement in specific application contexts.

Substiute Parts

UPL121

Cinch Connectivity Solutions TrompeterIn Stock: 1004UPL121 Datasheet

Current PartRFQ

PL121

Cinch Connectivity Solutions TrompeterIn Stock: 896PL121 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UPL121 is determined by the following critical parameters:

Mechanical Compatibility:

• Connector style (BNC)
• Connector type (Plug, Male Pin)
• Contact termination method (Solder Cup)
• Shield termination method (Solder)
• Mounting type (Panel Mount)
• Mounting feature (Bulkhead - Rear Side Nut)
• Fastening type (Snap-On)

Electrical Compatibility:

• Impedance rating
• Frequency maximum rating
• Voltage rating
• Operating temperature range

Regulatory & Environmental:

• RoHS compliance status
• Moisture sensitivity level

The identified substitute part PL121 shares identical mechanical mounting characteristics, termination methods, and environmental ratings. The primary electrical difference is impedance specification (50 Ohms versus 75 Ohms), which determines application suitability and is not interchangeable without system-level impact assessment.

Parameter Comparison

Engineering Selection Recommendations

Both UPL121 and PL121 maintain active product status with current manufacturing support. The UPL121 carries RoHS Compliant certification, while PL121 carries ROHS3 Compliant certification, indicating enhanced regulatory alignment for the substitute part.

Selection between these parts is determined by system impedance requirements. The UPL121 is specified for 75 Ohm systems, while PL121 is specified for 50 Ohm systems. Mechanical and environmental characteristics are equivalent, allowing physical interchangeability only in applications where impedance specification permits substitution. Both parts support identical operating temperature ranges, voltage ratings, and frequency performance to 4 GHz.

Frequently Asked Questions (FAQ)

Q: Can PL121 be used as a direct replacement for UPL121?

A: Physical installation is possible due to identical mechanical mounting, termination methods, and fastening characteristics. However, electrical compatibility depends on system impedance specification. PL121 is rated for 50 Ohm systems while UPL121 is rated for 75 Ohm systems. Substitution requires confirmation that the application operates at 50 Ohm impedance.

Q: What is the impedance difference between these parts?

A: UPL121 is specified for 75 Ohm impedance, commonly used in video and composite signal applications. PL121 is specified for 50 Ohm impedance, standard for RF and microwave applications. These impedance values are not interchangeable without system redesign.

Q: Are both parts RoHS compliant?

A: Yes. UPL121 carries RoHS Compliant certification. PL121 carries ROHS3 Compliant certification, representing a more recent regulatory standard. Both meet RoHS requirements for hazardous substance restrictions.

Q: Do these connectors support the same frequency range?

A: Yes. Both UPL121 and PL121 support maximum frequency operation to 4 GHz with identical mechanical and electrical characteristics in this parameter.

Q: What is the packaging configuration for both parts?

A: Both parts are supplied in bulk packaging. Each connector includes three pieces: one connector body, one nut, and one washer, as specified in the product documentation.

Q: Are the operating temperature ranges identical?

A: Yes. Both UPL121 and PL121 operate across the temperature range of -65°C to 165°C with identical voltage rating of 500 V.