PT01E8-4S-SR Equivalent & Substitute Parts

Part Overview

The PT01E8-4S-SR is a 4-position circular connector receptacle manufactured by Amphenol Industrial Operations. This female socket connector features solder cup termination and is designed for free-hanging, in-line mounting applications. The connector is compliant with MIL-DTL-26482 Series I specifications and is actively produced. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory constraints require component alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

PT01E8-4S-SR

Amphenol Industrial OperationsIn Stock: 1159PT01E8-4S-SR Datasheet

Current PartRFQ

MSW01E8-4S-SR

Milspecwest, LLCIn Stock: 815MSW01E8-4S-SR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PT01E8-4S-SR is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: Receptacle, Female Sockets
• Number of Positions: 4
• Shell Size - Insert: 8-4
• Mounting Type: Free Hanging (In-Line)
• Fastening Type: Bayonet Lock
• Operating Temperature Range: -55°C ~ 125°C
• Ingress Protection: Environment Resistant

Allowable Variation Parameters:

• Termination Type: Solder Cup or Solder (functionally equivalent for wire attachment)
• Shell Material: Aluminum (consistent across all candidates)
• Voltage Rating: Equal to or greater than 600VAC
• Current Rating: Specified where available
• Shell Finish: Cadmium or Olive Drab Cadmium (both provide corrosion resistance)
• Contact Finish: Gold or Cadmium (both acceptable for mating surfaces)

The MSW01E8-4S-SR meets all mandatory matching parameters and operates within allowable variation ranges, qualifying it as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

PT01E8-4S-SR (Amphenol Industrial Operations):

• Primary selection for applications requiring MIL-DTL-26482 Series I strict compliance
• Gold-plated mating contacts provide enhanced corrosion resistance and contact reliability
• Olive Drab Chromate over Cadmium finish meets military specification requirements
• Active production status with 1114 units in stock
• Suitable for aerospace, communication systems, and instrumentation applications

MSW01E8-4S-SR (Milspecwest, LLC):

• Qualified substitute when primary part availability is constrained
• Higher voltage rating (800V vs. 600VAC) accommodates applications with elevated voltage requirements
• Specified current rating of 7.5A provides defined electrical performance parameters
• Cadmium finish and cadmium contact finish meet 26482 style connector specifications
• Active production status with 744 units in stock
• Suitable for military applications

Both parts are non-compliant with RoHS directives and share identical mechanical compatibility, operating temperature ranges, and environmental resistance ratings. Selection between these parts depends on specific application voltage requirements, contact finish preferences, and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can MSW01E8-4S-SR be used as a direct replacement for PT01E8-4S-SR?

A: Yes. Both connectors share identical shell size (8-4), position count (4), mounting type (free hanging in-line), fastening mechanism (bayonet lock), and operating temperature range (-55°C ~ 125°C). The MSW01E8-4S-SR meets all mandatory mechanical and electrical compatibility requirements for substitution.

Q: What is the difference in contact finish between these two parts?

A: The PT01E8-4S-SR features gold-plated mating contacts, while the MSW01E8-4S-SR uses cadmium-plated contacts. Both finishes are acceptable for electrical mating surfaces. Gold plating typically provides superior corrosion resistance and lower contact resistance in high-reliability applications. Cadmium plating meets military specifications and is suitable for standard industrial and military environments.

Q: Does the higher voltage rating of MSW01E8-4S-SR (800V vs. 600VAC) affect compatibility?

A: No. A higher voltage rating indicates the substitute part can safely operate at or above the original part's voltage specification. The MSW01E8-4S-SR is fully compatible with applications rated for 600VAC and can accommodate applications requiring up to 800V operation.

Q: Are the termination types interchangeable?

A: Yes. Both parts use solder termination methods. The PT01E8-4S-SR specifies "Solder Cup" termination, while the MSW01E8-4S-SR specifies "Solder" termination. Both methods provide equivalent wire attachment and electrical connection reliability for this connector category.

Q: What is the significance of the shell finish difference?

A: The PT01E8-4S-SR uses Olive Drab Chromate over Cadmium finish, which is the standard military specification finish. The MSW01E8-4S-SR uses Cadmium finish. Both finishes provide corrosion resistance suitable for environment-resistant applications. The Olive Drab Chromate finish is preferred for strict military specification compliance, while Cadmium finish meets 26482 style connector requirements.

Q: Are both parts currently in production?

A: Yes. Both the PT01E8-4S-SR and MSW01E8-4S-SR maintain active production status. The PT01E8-4S-SR has 1114 units in stock, and the MSW01E8-4S-SR has 744 units in stock.

Q: What applications are these connectors suitable for?

A: The PT01E8-4S-SR is specified for aerospace, communication systems, industrial, instrumentation, and mass transit applications. The MSW01E8-4S-SR is specified for military applications. Both connectors are suitable for environments requiring environment-resistant circular connectors with bayonet locking mechanisms.

Q: Do both parts comply with RoHS regulations?

A: No. Both the PT01E8-4S-SR and MSW01E8-4S-SR are RoHS non-compliant. Applications requiring RoHS compliance cannot use either of these connectors.