TE Connectivity AMP Connectors 1050903-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 1050903-1 is an SMA Connector Jack, Female Socket rated for 50 Ohms impedance with solder termination. This coaxial RF connector is designed for free hanging (in-line) applications with a maximum frequency rating of 12.4 GHz and operating temperature range of -65°C to 125°C. The connector is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing procurement and system integration requirements.

Substiute Parts

1050903-1

TE Connectivity AMP ConnectorsIn Stock: 8171050903-1 Datasheet

Current PartRFQ

2903-6001

Amphenol SV MicrowaveIn Stock: 12272903-6001 Datasheet

DirectRFQ

142-0303-011

Cinch Connectivity Solutions JohnsonIn Stock: 984142-0303-011 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity AMP Connectors 1050903-1 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Connector Style: SMA
• Connector Type: Jack, Female Socket
• Impedance: 50 Ohms
• Mounting Type: Free Hanging (In-Line)
• Fastening Type: Threaded
• Frequency - Max: 12.4 GHz (minimum requirement)
• Number of Ports: 1
• Dielectric Material: Polytetrafluoroethylene (PTFE)

Secondary Compatibility Parameters:

• Operating Temperature Range: Must accommodate -65°C minimum
• Voltage Rating: 250 V minimum
• Mating Cycles: 500 minimum
• Center Contact Plating: Gold
• RoHS Compliance Status

The substitute parts identified maintain electrical and mechanical compatibility through matching impedance, connector geometry, frequency rating, and environmental specifications. Variations in contact termination method (solder versus crimp) and body material composition are permissible when all primary criteria are satisfied and the substitute part is in active product status.

Parameter Comparison

Engineering Selection Recommendations

Cinch Connectivity Solutions Johnson 142-0303-011:

The 142-0303-011 is classified as a similar substitute part and represents the primary replacement option for the obsolete 1050903-1. This part maintains identical SMA Jack, Female Socket configuration with matching 50 Ohm impedance, 12.4 GHz frequency rating, and threaded fastening. The 142-0303-011 offers dual termination capability (crimp or solder), providing flexibility for integration into existing solder-based assembly processes. The part is in active product status with ROHS3 compliance certification. Operating temperature range extends to 165°C, exceeding the original specification. Center contact material remains Beryllium Copper with gold plating, ensuring electrical performance equivalence. Voltage rating and mating cycle specifications match the original part.

Amphenol SV Microwave 2903-6001:

The 2903-6001 is classified as a direct substitute part but presents a critical functional difference: it is configured as an SMA Plug, Male Pin connector rather than a Jack, Female Socket. This part is suitable only for applications requiring male pin termination and cannot serve as a direct replacement in circuits designed for female socket reception. The 2903-6001 maintains 50 Ohm impedance, 12.4 GHz frequency rating, and threaded fastening. Termination is crimp-based. The part is in active product status with ROHS3 compliance. This connector is appropriate for complementary mating applications or system redesigns that accommodate male pin configuration.

Recommendation Summary:

For direct functional replacement of the obsolete 1050903-1, select Cinch Connectivity Solutions Johnson 142-0303-011. This part satisfies all primary substitution criteria while maintaining active product status and enhanced environmental specifications. The Amphenol SV Microwave 2903-6001 serves complementary applications requiring male pin configuration and is not suitable as a direct substitute without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the Cinch 142-0303-011 be used as a direct replacement for the TE Connectivity 1050903-1?

A: Yes. Both connectors are SMA Jack, Female Socket configurations with 50 Ohm impedance, 12.4 GHz frequency rating, and threaded fastening. The 142-0303-011 supports both crimp and solder termination, accommodating the original solder-based assembly method. All critical electrical and mechanical parameters align.

Q: Why is the Amphenol 2903-6001 listed as a substitute if it is a male pin connector?

A: The 2903-6001 is listed as a direct substitute in the source data but functions as a complementary connector type. It is suitable for applications requiring SMA Plug, Male Pin configuration and cannot serve as a direct replacement for female socket applications without system redesign.

Q: What are the key differences between solder and crimp termination in these connectors?

A: The 1050903-1 uses solder termination for cable attachment, while the 142-0303-011 offers both crimp and solder options. Solder termination involves melting solder to bond the cable to the connector contact. Crimp termination uses mechanical pressure to compress the connector onto the cable. The 142-0303-011 supports both methods, providing flexibility for existing solder-based processes.

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

A: Yes. The original 1050903-1 operates from -65°C to 125°C. The Cinch 142-0303-011 extends the upper limit to 165°C. Both maintain the -65°C minimum. Applications requiring operation above 125°C benefit from the 142-0303-011 specification.

Q: Do all three connectors meet RoHS compliance requirements?

A: Yes. The original 1050903-1 is RoHS Compliant. Both substitute parts (142-0303-011 and 2903-6001) are ROHS3 Compliant, representing the current RoHS standard. All three parts carry EAR99 ECCN classification and 8536.69.4010 HTSUS code.

Q: What is the significance of the Beryllium Copper center contact material in the 1050903-1 and 142-0303-011?

A: Beryllium Copper provides superior electrical conductivity and spring characteristics compared to brass, enhancing contact reliability and signal integrity. The 142-0303-011 maintains this material specification. The 2903-6001 uses brass, which is acceptable for 50 Ohm applications but offers different mechanical properties.

Q: Can the 1050903-1 be repaired or refurbished rather than replaced?

A: The 1050903-1 is classified as obsolete, indicating discontinued manufacturing and limited support availability. Procurement of active substitute parts is the standard engineering approach for system maintenance and new designs.

Q: What cable groups are compatible with the 142-0303-011?

A: The 142-0303-011 supports RG-161, RG-174, RG-188, and RG-316 cable groups. The original 1050903-1 specifies RG-188. The 142-0303-011 provides broader cable compatibility while maintaining RG-188 support.