CT3321 Coaxial Connector Adapter - Equivalent & Substitute Parts

Part Overview

The CT3321 is a coaxial connector adapter manufactured by Cal Test Electronics, designed to convert between N Jack (female socket) and SMA Plug (male pin) configurations. This adapter operates at 50 Ohms impedance with a maximum frequency rating of 11 GHz and supports operating temperatures from -55°C to 155°C. The part is currently listed as obsolete, making identification of suitable substitutes essential for ongoing system maintenance and component procurement.

Substiute Parts

CT3321

Cal Test ElectronicsIn Stock: 1174CT3321 Datasheet

Current PartRFQ

CT3321A

Cal Test ElectronicsIn Stock: 1090CT3321A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT3321 is determined by the following critical parameters:

• Adapter Configuration: Conversion between N Jack (female socket) and SMA Plug (male pin)
• Impedance: 50 Ohms
• Frequency Rating: Maximum 11 GHz
• Connector Gender: Female to Male center contact
• Mounting Style: Straight, free hanging (in-line)
• Fastening: Threaded connections
• Material Composition: Brass body with nickel finish, beryllium copper/brass center contact, PTFE dielectric
• Environmental Compliance: ROHS3 Compliant, REACH Unaffected

The CT3321A qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The primary distinction is the reversal of the adapter direction: CT3321A converts from SMA Plug to N Jack, whereas CT3321 converts from N Jack to SMA Plug. Both parts maintain identical impedance, frequency capability, material specifications, and environmental ratings.

Parameter Comparison

Engineering Selection Recommendations

The CT3321A is the designated substitute for the obsolete CT3321. Both parts maintain identical electrical performance characteristics, material specifications, and environmental compliance certifications. The CT3321A holds active product status, ensuring continued availability and supply chain reliability compared to the obsolete CT3321.

Selection between these two parts depends solely on the directional requirements of the application. If the system requires conversion from N Jack to SMA Plug, the CT3321 specification applies. If conversion from SMA Plug to N Jack is required, the CT3321A is the appropriate selection. Both parts are functionally interchangeable within their respective directional configurations and meet all ROHS3 and REACH compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can CT3321A be used as a direct replacement for CT3321?

A: CT3321A qualifies as a substitute only if the adapter direction reversal is compatible with the application. Both parts provide identical electrical performance at 50 Ohms impedance and 11 GHz maximum frequency. The critical difference is the connector orientation: CT3321 converts N Jack to SMA Plug, while CT3321A converts SMA Plug to N Jack.

Q: What are the key compatibility criteria for these adapters?

A: Compatibility is determined by impedance (50 Ohms), frequency rating (11 GHz maximum), connector series (SMA to N), center contact gender (female to male), and mounting style (straight, free hanging). Both parts meet these specifications identically.

Q: Are there packaging differences between CT3321 and CT3321A?

A: CT3321 is supplied in standard packaging, while CT3321A is packaged in bulk. This distinction affects procurement and inventory management but does not impact electrical or mechanical performance.

Q: Do both parts meet environmental and regulatory requirements?

A: Both CT3321 and CT3321A are ROHS3 Compliant and REACH Unaffected. Operating temperature range is -55°C to 155°C for both parts, supporting equivalent environmental performance.

Q: Why is CT3321 listed as obsolete?

A: CT3321 has been discontinued by the manufacturer. CT3321A remains in active production and serves as the current equivalent for ongoing system support and new component procurement.