Equivalent & Substitute Parts for 335R544

Part Overview

The 335R544 is an RF coaxial adapter connector manufactured by Winchester Interconnect, designed for 50-ohm impedance applications. This BNC jack-to-jack adapter provides female socket connections on both ends with straight panel mount configuration and bayonet locking mechanism. The component is classified as Active product status with 966 units in current inventory stock.

Substitute parts are identified to address inventory availability, extended frequency performance requirements, or alternative sourcing needs while maintaining electrical and mechanical compatibility within the BNC adapter category.

Substiute Parts

335R544

Winchester InterconnectIn Stock: 1043335R544 Datasheet

Current PartRFQ

31-4803

Amphenol RFIn Stock: 189831-4803 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 335R544 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Adapter Type: Jack to Jack configuration
• Adapter Series: BNC to BNC conversion
• Center Gender: Female to Female socket orientation
• Impedance: 50 Ohms
• Mounting Type: Panel Mount with Bulkhead feature
• Fastening Type: Bayonet Lock mechanism
• Style: Straight orientation

Allowable Variation Parameters:

• Frequency - Max: Substitute may exceed 1 GHz specification
• Operating Temperature: Substitute may extend beyond -40°C ~ 165°C range
• Center Contact Plating: Material variation permitted (Gold, Silver)
• Body Material: Material variation permitted (Brass, other)
• Dielectric Material: Material variation permitted (PTFE, PPO)
• Insertion Loss: Specification variation permitted
• Mating Cycles: Equal or greater cycles acceptable

The substitute part 31-4803 (Amphenol RF) meets all mandatory matching parameters and provides enhanced performance in frequency range (4 GHz vs. 1 GHz) and extended operating temperature (-65°C ~ 165°C vs. -40°C ~ 165°C).

Parameter Comparison

Engineering Selection Recommendations

Primary Part: 335R544 (Winchester Interconnect)

Select the 335R544 when:

• Frequency operation is limited to 1 GHz maximum
• Operating environment remains within -40°C to 165°C range
• Gold-plated center contact is specified for corrosion resistance
• PTFE dielectric material is required for specific application performance
• Winchester Interconnect sourcing is preferred or contractually mandated
• Insertion loss specification of 0.20 dB is critical to system design

Substitute Part: 31-4803 (Amphenol RF)

Select the 31-4803 when:

• Frequency operation extends to 4 GHz or higher
• Extended low-temperature operation to -65°C is required
• Silver-plated center contact is acceptable for the application
• PPO dielectric material meets application requirements
• Amphenol RF sourcing is preferred or contractually mandated
• Bulk packaging with included hardware (lockwasher, nut) is advantageous
• RoHS3 compliance certification is required
• Higher inventory availability (1863 units vs. 966 units) supports procurement timeline

Both parts maintain identical mechanical interface, electrical impedance, and mating cycle specifications, ensuring direct functional substitution within the specified parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can the 31-4803 directly replace the 335R544 in all applications?

A: The 31-4803 is electrically and mechanically compatible with the 335R544 for applications operating at 1 GHz or below. The 31-4803 provides enhanced frequency capability (4 GHz) and extended temperature range (-65°C to 165°C), making it suitable for broader application requirements. Both parts maintain identical 50-ohm impedance, BNC jack-to-jack configuration, female-to-female center gender, and bayonet locking mechanism.

Q: What are the key differences between these two adapters?

A: The primary differences are: (1) Maximum frequency: 335R544 operates to 1 GHz, while 31-4803 operates to 4 GHz; (2) Operating temperature: 335R544 range is -40°C to 165°C, while 31-4803 extends to -65°C; (3) Center contact plating: 335R544 uses gold, 31-4803 uses silver; (4) Dielectric material: 335R544 uses PTFE, 31-4803 uses PPO; (5) Packaging: 31-4803 includes lockwasher and nut; (6) Compliance: 31-4803 carries RoHS3 certification.

Q: Are there any insertion loss differences between the two parts?

A: The 335R544 specifies insertion loss of 0.20 dB. The 31-4803 insertion loss specification is not provided in the technical data. For applications where insertion loss is a critical design parameter, the 335R544 specification should be verified against system requirements before substitution.

Q: What is the significance of the different dielectric materials (PTFE vs. PPO)?

A: PTFE (Polytetrafluoroethylene) in the 335R544 and PPO (Polyphenylene Oxide) in the 31-4803 are both suitable dielectric materials for RF coaxial connectors. Material selection affects frequency response, temperature stability, and moisture absorption characteristics. Both materials are acceptable for 50-ohm RF applications within their respective frequency and temperature ranges.

Q: Does the 31-4803 include any additional components?

A: Yes. The 31-4803 is supplied with three components: the connector, one lockwasher, and one nut. The 335R544 packaging information is not specified. This inclusion may affect installation procedures and total cost of ownership.

Q: Are both parts RoHS compliant?

A: The 31-4803 is explicitly RoHS3 compliant. RoHS compliance status for the 335R544 is not specified in the provided technical data. For applications requiring RoHS certification, the 31-4803 meets this requirement.

Q: What is the significance of MSL Level 1 for both parts?

A: Moisture Sensitivity Level (MSL) 1 indicates unlimited shelf life with no special moisture control requirements during storage or handling. Both the 335R544 and 31-4803 carry MSL 1 classification, meaning standard storage conditions are acceptable without desiccant packaging or controlled humidity environments.