SS-103-T-38 Equivalent & Substitute Parts

Part Overview

The SS-103-T-38 is a 3-position receptacle connector manufactured by Samtec Inc., designed for board-to-board applications with 0.100" (2.54mm) pitch through-hole mounting. This connector features gold-plated mating contacts and tin-plated posts for reliable solder termination. The product is active and widely used in standard rectangular connector applications requiring push-pull fastening and compact form factors.

Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate specific application requirements where alternative manufacturers' components meet the same electrical and mechanical specifications.

Substiute Parts

SS-103-T-38

Samtec Inc.In Stock: 1189SS-103-T-38 Datasheet

Current PartRFQ

311-93-103-61-001000

Mill-Max Manufacturing Corp.In Stock: 1138311-93-103-61-001000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 311-93-103-61-001000 (Mill-Max Manufacturing Corp.) qualifies as an equivalent based on the following critical parameters:

• Connector Type & Contact Configuration: Both are 3-position female socket receptacles with identical mating pitch of 0.100" (2.54mm)
• Mounting & Termination: Both use through-hole solder termination with push-pull fastening
• Contact Material & Mating Finish: Both employ beryllium copper contacts with gold-plated mating surfaces at 30.0µin (0.76µm) thickness
• Operating Temperature: Both rated for -55°C ~ 125°C operation
• Board-to-Board Style: Both designed for identical application context

Substitution is valid where the minor dimensional and material variations listed in the parameter comparison do not conflict with specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

Both the SS-103-T-38 and 311-93-103-61-001000 are active products suitable for equivalent application use. Selection between these parts should be based on:

• RoHS/REACH Compliance Requirements: The SS-103-T-38 carries ROHS3 compliance certification. The 311-93-103-61-001000 is REACH unaffected. Verify compliance requirements for your specific application and regulatory jurisdiction.

• Post Finish Specification: The SS-103-T-38 uses tin-plated posts, while the 311-93-103-61-001000 uses tin-lead plating. This difference may impact soldering characteristics and environmental compliance depending on application constraints.

• Dimensional Tolerance: Minor variations exist in insulation height (0.010" difference) and contact post length (0.010" difference). Confirm these tolerances do not conflict with PCB layout, stacking height requirements, or mating component specifications.

• Inventory & Lead Time: Both parts are in active stock. Selection may be driven by supply chain availability and procurement timelines.

Frequently Asked Questions (FAQ)

Q: Can the 311-93-103-61-001000 be used as a direct replacement for the SS-103-T-38?

A: Yes, for applications where the dimensional and material variations do not create conflicts. The core electrical and mechanical specifications are equivalent. Verify insulation height and post length compatibility with your specific PCB design and mating components.

Q: What is the significance of the tin-lead versus tin post finish difference?

A: The SS-103-T-38 uses pure tin plating, while the 311-93-103-61-001000 uses tin-lead plating. This affects soldering characteristics and environmental compliance. Confirm your assembly process and regulatory requirements support the selected finish type.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both parts are rated for -55°C ~ 125°C operation and use identical contact materials and mating finishes, ensuring equivalent thermal performance.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is valid when the following parameters match: connector type (receptacle), contact type (female socket), number of positions (3), mating pitch (0.100"), mounting type (through hole), termination method (solder), fastening type (push-pull), contact material (beryllium copper), and mating contact finish (gold). Minor dimensional variations and post finish differences are acceptable if they do not conflict with application-specific constraints.

Q: How do the insulation materials differ between these parts?

A: The SS-103-T-38 uses polybutylene terephthalate (PBT) glass-filled material, while the 311-93-103-61-001000 uses polycyclohexylenedimethylene terephthalate (PCT) polyester. Both materials provide adequate insulation performance for standard rectangular connector applications. Material selection may influence mechanical properties and environmental resistance in specific use cases.

Q: Are there any compliance or certification differences I should consider?

A: The SS-103-T-38 is ROHS3 compliant. The 311-93-103-61-001000 is REACH unaffected. Verify your application's regulatory requirements to ensure the selected part meets all necessary compliance standards for your target market and industry.