Pomona Electronics 4388 BNC Triaxial Connector Receptacle Equivalent & Substitute Parts

Part Overview

The Pomona Electronics 4388 is a BNC triaxial connector receptacle designed for RF coaxial applications requiring hermetically sealed, panel-mount connectivity. This female socket connector operates at 50 ohms impedance with a maximum frequency rating of 500 MHz and is suitable for applications requiring environmental sealing and reliable bayonet-lock fastening. The part maintains active product status with full RoHS3 compliance and REACH unaffected designation. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical mounting characteristics, and environmental ratings to ensure direct interchangeability in circuit designs and system installations.

Substiute Parts

4388#

Pomona ElectronicsIn Stock: 10444388# Datasheet

Current PartRFQ

4388

Pomona ElectronicsIn Stock: 8134388 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Pomona Electronics 4388 BNC triaxial connector receptacle is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Connector style must be BNC triaxial configuration
• Connector type must be receptacle with female socket contact
• Impedance must be 50 ohms
• Maximum frequency rating must be 500 MHz or greater
• Voltage rating must be 500 V or greater

Mechanical Equivalence Criteria:

• Mounting type must be panel mount with bulkhead rear-side nut configuration
• Contact termination must be solder eyelet
• Shield termination must be solder
• Fastening type must be bayonet lock
• Housing must accommodate the same physical footprint and mounting hole pattern

Material and Environmental Equivalence Criteria:

• Center contact material must be beryllium copper
• Body material must be brass with nickel finish
• Center contact plating must be gold
• Dielectric material must be polytetrafluoroethylene (PTFE)
• Operating temperature range must encompass -65°C to 165°C
• Hermetic sealing requirement must be met
• RoHS3 compliance and REACH unaffected status must be maintained

Parameter Comparison

Engineering Selection Recommendations

The Pomona Electronics 4388 BNC triaxial connector receptacle and its substitute part 4388 are parametrically equivalent across all electrical, mechanical, and environmental specifications. Both parts maintain active product status with full RoHS3 compliance and REACH unaffected designation, ensuring regulatory compliance for current and future applications.

Selection between the main part number 4388# and the substitute part number 4388 is based on inventory availability and procurement requirements. The 4388# variant has 940 pieces in stock, while the 4388 substitute has 735 pieces available. Both parts are manufactured by Pomona Electronics and provide identical functional performance in 50-ohm RF coaxial applications operating up to 500 MHz.

The hermetically sealed design, beryllium copper center contact with gold plating, and PTFE dielectric ensure reliable signal integrity and environmental protection across the full operating temperature range of -65°C to 165°C. The bayonet-lock fastening mechanism and bulkhead rear-side nut mounting configuration provide secure panel installation with consistent electrical performance.

Frequently Asked Questions (FAQ)

Q: Are the Pomona 4388# and Pomona 4388 directly interchangeable?

A: Yes. Both parts are parametrically equivalent across all electrical specifications (50-ohm impedance, 500 MHz maximum frequency, 500 V voltage rating), mechanical mounting characteristics (panel mount bulkhead configuration, bayonet-lock fastening), and material composition (beryllium copper center contact, brass body with nickel finish, gold plating, PTFE dielectric). They provide identical functional performance in RF coaxial applications.

Q: What determines substitution eligibility for this BNC triaxial connector receptacle?

A: Substitution eligibility is determined by matching the following critical parameters: BNC triaxial connector style, receptacle female socket type, 50-ohm impedance, 500 MHz frequency rating, panel mount bulkhead configuration, solder eyelet contact termination, bayonet-lock fastening, hermetic sealing, beryllium copper center contact with gold plating, brass body with nickel finish, PTFE dielectric, -65°C to 165°C operating temperature range, 500 V voltage rating, RoHS3 compliance, and REACH unaffected status.

Q: Can this connector be used in applications requiring frequencies above 500 MHz?

A: The Pomona 4388 and 4388# are rated for a maximum frequency of 500 MHz. Applications requiring higher frequency operation require alternative connector designs with higher frequency ratings.

Q: What is included with each connector unit?

A: Each connector includes four components: one connector body, one gasket, one lockwasher, and one nut. These components are supplied together in bulk packaging.

Q: Are both part numbers RoHS3 compliant?

A: Yes. Both the Pomona 4388# and Pomona 4388 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the operating temperature range for these connectors?

A: Both connectors operate across a temperature range of -65°C to 165°C, providing performance stability across industrial, commercial, and military temperature environments.

Q: What materials are used in the center contact and body construction?

A: The center contact is constructed from beryllium copper with gold plating to ensure reliable electrical contact and corrosion resistance. The connector body is brass with nickel finish, and the dielectric material is polytetrafluoroethylene (PTFE) for signal integrity and environmental protection.