TE Connectivity AMP Connectors 221629-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 221629-4 is a terminator coaxial connector plug with male pin configuration, designed for 50 Ohm RF applications. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing procurement and system integration. The part features a BNC connector style with nickel-plated brass body and gold-plated brass contacts, suitable for free-hanging and cap mounting applications.

Substiute Parts

221629-4

TE Connectivity AMP ConnectorsIn Stock: 1086221629-4 Datasheet

Current PartRFQ

46650-51

Amphenol RFIn Stock: 109646650-51 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity AMP Connectors 221629-4 is determined by the following critical parameters:

Connector Interface Compatibility:

• Connector Style: BNC
• Connector Type: Plug, Male Pin
• Mounting Type: Free Hanging, Cap

Electrical Performance:

• Impedance: 50 Ohms (primary specification for RF terminator applications)
• Dielectric Material: Polyethylene (PE) or equivalent RF-grade dielectric

Physical and Material Specifications:

• Body Material: Brass
• Body Finish: Nickel
• Contact Material: Brass
• Contact Finish: Gold or Silver (both acceptable for RF termination)

Regulatory and Environmental:

• Moisture Sensitivity Level: 1 (Unlimited)
• ECCN: EAR99

The Amphenol RF 46650-51 qualifies as a functional substitute based on matching connector style, type, mounting configuration, and core RF performance characteristics. Minor impedance variation (51 Ohms versus 50 Ohms) and dielectric material difference (PTFE versus PE) represent acceptable engineering tolerances within RF terminator applications. The substitute part offers improved compliance status (ROHS3 Compliant versus RoHS non-compliant) and active product availability.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Part Replacement:

The Amphenol RF 46650-51 serves as the primary substitute for the TE Connectivity AMP Connectors 221629-4. Selection of this substitute is supported by:

1. Product Status Alignment: The substitute part maintains active product status, ensuring long-term availability and supply chain continuity compared to the obsolete original part.

2. Regulatory Compliance: The Amphenol RF 46650-51 achieves ROHS3 compliance, addressing modern regulatory requirements that the non-compliant original part does not satisfy.

3. Functional Equivalence: Both parts maintain identical BNC plug male pin configuration, free-hanging cap mounting, and MSL 1 environmental rating, ensuring direct functional compatibility in RF terminator applications.

4. Electrical Performance: The 1 Ohm impedance variance (51 Ohms versus 50 Ohms) and dielectric material substitution (PTFE for PE) remain within acceptable RF engineering tolerances for terminator applications.

5. Material and Finish Compatibility: Nickel-plated brass body construction is preserved. Silver contact finish in the substitute part provides equivalent RF performance to the gold-plated original.

For Legacy System Maintenance:

Existing inventory of TE Connectivity 221629-4 parts (1030 units in stock) remains available for direct replacement in systems requiring exact original specifications. Transition to the Amphenol RF 46650-51 is recommended for new designs and long-term system support.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol RF 46650-51 directly replace the TE Connectivity 221629-4 in existing RF systems?

A: Yes. Both parts share identical BNC connector style, male pin configuration, and free-hanging cap mounting. The 1 Ohm impedance difference (51 Ohms versus 50 Ohms) and dielectric material variation (PTFE versus PE) are within acceptable RF engineering tolerances for terminator applications. Functional compatibility is established.

Q: What is the significance of the impedance difference between 50 Ohms and 51 Ohms?

A: Both impedance values fall within standard RF terminator specifications. The 1 Ohm variance represents a 2% difference and does not compromise RF performance in terminator applications where impedance matching tolerances are typically ±5%.

Q: Why does the substitute part use PTFE dielectric instead of polyethylene?

A: PTFE (Polytetrafluoroethylene) is a higher-performance RF dielectric material offering superior frequency response and temperature stability compared to polyethylene. This substitution represents an engineering improvement while maintaining functional compatibility.

Q: What is the difference between gold and silver contact finishes in RF applications?

A: Both gold and silver finishes provide excellent RF conductivity and corrosion resistance. Silver offers marginally superior electrical conductivity, while gold provides enhanced corrosion resistance. For RF terminator applications, both finishes deliver equivalent performance.

Q: Is the ROHS3 compliance of the substitute part a requirement for my application?

A: ROHS3 compliance is mandatory for products sold in the European Union and many other regulated markets. If your application or supply chain requires RoHS compliance, the Amphenol RF 46650-51 is the appropriate selection. Legacy systems using non-compliant components may continue operation with existing inventory.

Q: Are there packaging differences between the original and substitute parts?

A: The original TE Connectivity part packaging is not specified in available documentation. The Amphenol RF substitute is supplied in bulk packaging. Confirm packaging requirements with your procurement department for order processing.

Q: What is the MSL rating and why is it relevant?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. These components do not require special moisture-controlled storage or handling procedures, simplifying inventory management and deployment.