PT01A8-4S-SR Equivalent & Substitute Parts

Part Overview

The PT01A8-4S-SR is a 4-position circular connector receptacle manufactured by Amphenol Industrial Operations. This connector features female sockets with solder cup termination, designed for free-hanging in-line mounting applications. The connector is part of the MIL-DTL-26482 Series I product line and is currently in active production status with 773 units in stock.

Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable, when inventory constraints exist, or when equivalent performance specifications are required for system integration across multiple suppliers.

Substiute Parts

PT01A8-4S-SR

Amphenol Industrial OperationsIn Stock: 875PT01A8-4S-SR Datasheet

Current PartRFQ

MSW01A8-4S-SR

Milspecwest, LLCIn Stock: 1267MSW01A8-4S-SR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The MSW01A8-4S-SR manufactured by Milspecwest, LLC qualifies as a substitute for the PT01A8-4S-SR based on the following critical parameters:

Matching Parameters:

• 4-position circular connector receptacle configuration
• Female socket contact arrangement
• Shell size 8-4 designation
• Bayonet lock fastening mechanism
• Free-hanging in-line mounting orientation
• Aluminum shell construction
• Solder termination method
• Operating temperature range of -55°C to 125°C
• MIL-DTL-26482 series compliance (26482 Style Connectors)
• RoHS non-compliant status

Allowable Variations:

• Voltage rating differential (800V substitute vs. 600VAC main part)
• Current rating specification (7.5A provided for substitute only)
• Shell finish composition (Cadmium vs. Olive Drab Chromate over Cadmium)
• Contact finish (Cadmium vs. Gold)
• Packaging format (Bag vs. unspecified)

These variations remain within acceptable substitution parameters for circular connector receptacles in this category.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The PT01A8-4S-SR remains the preferred selection when available. This part carries active product status with established aerospace, communication systems, industrial, instrumentation, and mass transit application history. The gold contact finish provides superior corrosion resistance and electrical performance characteristics in demanding environments.

Substitute Part Selection: The MSW01A8-4S-SR is suitable for applications where the PT01A8-4S-SR is unavailable. Both parts maintain identical mechanical compatibility, identical operating temperature specifications, and equivalent MIL-DTL-26482 series compliance. The substitute part provides higher voltage rating capability (800V vs. 600VAC), which accommodates applications with elevated voltage requirements.

Compliance Considerations: Both parts carry RoHS non-compliant status and EAR99 export classification. Selection between these parts does not introduce additional compliance constraints. Both parts are classified as Moisture Sensitivity Level 1 (unlimited) or Not Applicable, indicating no special moisture handling requirements during storage or installation.

Inventory Availability: The MSW01A8-4S-SR currently maintains higher inventory levels (1164 units) compared to the PT01A8-4S-SR (773 units), which may influence sourcing decisions based on delivery timeline requirements.

Frequently Asked Questions (FAQ)

Q: Can the MSW01A8-4S-SR directly replace the PT01A8-4S-SR in existing assemblies?

A: Yes. Both connectors share identical mechanical dimensions (shell size 8-4), identical pin configurations (4 positions), identical fastening mechanisms (bayonet lock), and identical mounting orientation (free-hanging in-line). The connectors are mechanically and functionally interchangeable.

Q: What is the significance of the voltage rating difference between these parts?

A: The PT01A8-4S-SR is rated for 600VAC operation, while the MSW01A8-4S-SR is rated for 800V operation. The substitute part accommodates higher voltage applications. For systems operating at or below 600VAC, both parts perform equivalently. For systems requiring operation above 600VAC, the MSW01A8-4S-SR is the appropriate selection.

Q: How do the contact finish specifications affect part selection?

A: The PT01A8-4S-SR features gold-plated mating contacts, while the MSW01A8-4S-SR features cadmium-plated contacts. Gold plating provides enhanced corrosion resistance and lower contact resistance in high-reliability applications. Cadmium plating is suitable for standard industrial and military applications. Contact finish selection depends on environmental exposure and electrical performance requirements specific to the application.

Q: Are there any temperature-related limitations when substituting these parts?

A: No. Both connectors operate across the identical temperature range of -55°C to 125°C. Temperature performance is equivalent between the two parts.

Q: What packaging differences exist between these parts?

A: The PT01A8-4S-SR packaging specification is not provided in the technical data. The MSW01A8-4S-SR is supplied in bag packaging. Packaging format does not affect connector performance or compatibility.

Q: Do both parts comply with the same military standards?

A: Yes. Both connectors comply with MIL-DTL-26482 series specifications. The PT01A8-4S-SR is designated as Series I, PT, while the MSW01A8-4S-SR is designated as 26482 Style Connectors. Both designations reference the same military standard for circular connector design and performance.

Q: Which part should be selected for new design implementations?

A: For new designs, either part is acceptable based on application requirements. If voltage operation exceeds 600VAC, the MSW01A8-4S-SR is required. If gold contact finish is specified for enhanced reliability, the PT01A8-4S-SR is appropriate. If inventory availability is the primary constraint, the MSW01A8-4S-SR currently maintains higher stock levels.