ICO-318-SST DIP Socket Equivalent & Substitute Parts

Part Overview

The ICO-318-SST is an 18-position DIP socket manufactured by Samtec Inc., designed for through-hole mounting applications requiring gold-plated mating contacts and tin-plated termination posts. This socket accommodates dual inline package (DIP) integrated circuits with 0.3" (7.62mm) row spacing and 0.100" (2.54mm) pitch. The product maintains active status with 759 units in current inventory. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling component procurement flexibility and supply chain continuity.

Substiute Parts

ICO-318-SST

Samtec Inc.In Stock: 841ICO-318-SST Datasheet

Current PartRFQ

110-91-318-41-001000

Mill-Max Manufacturing Corp.In Stock: 875110-91-318-41-001000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ICO-318-SST is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Number of Positions: 18 (2 x 9)
• Row Spacing: 0.3" (7.62mm)
• Pitch - Mating: 0.100" (2.54mm)
• Contact Finish - Mating: Gold
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C ~ 125°C

Allowable Variation Parameters:

• Contact Finish Thickness - Mating: 10.0µin (0.25µm) tolerance
• Contact Material - Mating: Beryllium Copper (consistent across substitutes)
• Housing Material: Polyester or equivalent polymer variants
• Current Rating: May exceed main part specification
• Contact Resistance: Specification-dependent; lower values acceptable
• Termination Post specifications: Variation permitted within through-hole assembly compatibility
• RoHS Status: Compliance status may differ based on application requirements

The substitute part 110-91-318-41-001000 (Mill-Max Manufacturing Corp.) satisfies all mandatory matching parameters and maintains functional equivalence for standard DIP socket applications.

Parameter Comparison

Engineering Selection Recommendations

ICO-318-SST Selection Criteria:

• Applications requiring ROHS3 compliance
• Specifications demanding 10mOhm contact resistance verification
• Designs with 1 A current rating requirement
• Tin-plated post finish preference

110-91-318-41-001000 Selection Criteria:

• Applications where RoHS non-compliance is acceptable
• Designs benefiting from 3 A current rating capability
• Tin-Lead post finish compatibility with existing assembly processes
• Higher termination post thickness (200.0µin) for enhanced mechanical durability

Both parts maintain identical mechanical compatibility with 18-position DIP packages at 0.3" row spacing and 0.100" pitch. Selection between these substitutes depends on regulatory compliance requirements, current load specifications, and post finish material compatibility with PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 110-91-318-41-001000 directly replace the ICO-318-SST in existing designs?

A: Physical and electrical compatibility exists for standard DIP socket applications. The primary consideration is RoHS compliance status: the ICO-318-SST is ROHS3 compliant while the 110-91-318-41-001000 is RoHS non-compliant. Verify compliance requirements for your application before substitution.

Q: What is the significance of the different current ratings (1 A vs. 3 A)?

A: The ICO-318-SST is rated for 1 A maximum current, while the 110-91-318-41-001000 is rated for 3 A. The higher rating of the Mill-Max part provides additional margin for applications with higher current demands. Both parts are suitable for standard DIP socket applications where current requirements do not exceed their respective ratings.

Q: Are the post finish materials interchangeable?

A: The ICO-318-SST features tin-plated posts while the 110-91-318-41-001000 features tin-lead plated posts. Both are suitable for solder termination through-hole assembly. Verify compatibility with your specific PCB assembly process and solder specifications.

Q: Does the difference in housing material affect performance?

A: Both housing materials (polyester glass-filled versus polycyclohexylenedimethylene terephthalate) are equivalent polymers suitable for DIP socket applications. Operating temperature range remains identical at -55°C ~ 125°C for both parts.

Q: What does the contact finish thickness difference mean?

A: The mating contact finish thickness is identical at 10.0µin (0.25µm) for both parts. The post finish thickness differs: the ICO-318-SST specification is not provided, while the 110-91-318-41-001000 specifies 200.0µin (5.08µm). This variation does not affect functional compatibility for standard applications.

Q: Are both parts available in the same packaging format?

A: Yes, both the ICO-318-SST and 110-91-318-41-001000 are supplied in tube packaging, enabling equivalent handling and storage procedures.