CT3351 N-Type Coaxial Connector Adapter - Equivalent & Substitute Parts

Part Overview

The CT3351 is a coaxial connector adapter manufactured by Cal Test Electronics, designed for RF applications requiring N-type plug-to-plug connections with 50-ohm impedance. This adapter provides male-to-male pin conversion in a straight, free-hanging configuration suitable for inline mounting.

The CT3351 is classified as obsolete, making identification of active equivalent parts essential for procurement and system continuity. The CT3351A serves as the direct active substitute, maintaining identical electrical and mechanical specifications while offering current availability.

Substiute Parts

CT3351

Cal Test ElectronicsIn Stock: 1157CT3351 Datasheet

Current PartRFQ

CT3351A

Cal Test ElectronicsIn Stock: 843CT3351A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT3351 is determined by strict equivalence across the following critical parameters:

• Adapter Configuration: Plug-to-plug topology with N-type connectors
• Gender Configuration: Male-to-male center pin conversion
• Impedance Matching: 50-ohm characteristic impedance
• Electrical Performance: Maximum frequency of 11 GHz and insertion loss of 0.05 dB
• Physical Form Factor: Straight orientation with free-hanging inline mounting
• Material Compatibility: PTFE dielectric and gold-plated center contacts
• Environmental Compliance: ROHS3 compliance and REACH unaffected status

The CT3351A maintains complete equivalence across all specified parameters, differing only in product status (active versus obsolete) and body finish options (silver and white bronze versus white bronze alone).

Parameter Comparison

Engineering Selection Recommendations

The CT3351A is the direct equivalent substitute for the obsolete CT3351. Both parts maintain identical electrical specifications, mechanical form factors, and regulatory compliance certifications. Selection between these parts is determined by availability and product lifecycle status:

• CT3351: Suitable for applications where existing inventory is available and obsolescence risk is acceptable for legacy system support.
• CT3351A: Recommended for new designs and ongoing procurement due to active product status and current manufacturing support.

Both parts satisfy ROHS3 compliance and REACH regulatory requirements, making them interchangeable from a regulatory standpoint. The body finish variation (silver and white bronze options in CT3351A versus white bronze in CT3351) does not affect electrical performance or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can CT3351A directly replace CT3351 in existing assemblies?

A: Yes. The CT3351A maintains complete electrical and mechanical equivalence to the CT3351 across all specified parameters, including impedance, frequency response, insertion loss, connector geometry, and mounting configuration.

Q: What is the difference between CT3351 and CT3351A?

A: The primary difference is product status: CT3351 is obsolete while CT3351A is active. The CT3351A also offers additional body finish options (silver and white bronze) compared to the CT3351 (white bronze only). Electrical and mechanical specifications are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical ROHS3 compliance and REACH unaffected status, with matching ECCN and HTSUS classifications.

Q: What are the critical parameters for N-type coaxial adapter substitution?

A: Substitution requires matching adapter type (plug-to-plug), connector series (N-to-N), center gender (male-to-male), impedance (50 ohms), frequency capability (11 GHz maximum), insertion loss (0.05 dB), and dielectric material (PTFE).

Q: Is the operating temperature range specification critical for substitution?

A: The CT3351 specifies -55°C to 155°C operating range. The CT3351A does not provide an explicit operating temperature specification in available documentation. Applications requiring confirmed temperature range specifications should reference the CT3351 datasheet or contact the manufacturer for CT3351A temperature ratings.