ICO-632-STT Equivalent & Substitute Parts

Part Overview

The ICO-632-STT is a 32-position DIP socket manufactured by Samtec Inc., designed for through-hole mounting applications requiring low-profile screw machine construction. This socket accommodates 0.100" pitch integrated circuits with 0.6" row spacing and operates across the industrial temperature range of -55°C to 105°C. The part maintains active product status with 829 units in current inventory. Substitute parts are identified to address supply chain requirements, alternative sourcing needs, or specific application constraints where equivalent electrical and mechanical parameters are maintained.

Substiute Parts

ICO-632-STT

Samtec Inc.In Stock: 934ICO-632-STT Datasheet

Current PartRFQ

110-99-632-41-001000

Mill-Max Manufacturing Corp.In Stock: 1297110-99-632-41-001000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICO-632-STT with the Mill-Max 110-99-632-41-001000 is based on strict equivalence of the following critical parameters:

Mechanical Compatibility:

• Identical 32-position DIP configuration (2 x 16)
• Matching 0.6" (15.24mm) row spacing
• Identical 0.100" (2.54mm) mating and post pitch
• Through-hole solder termination on both parts
• Open frame construction on both parts

Electrical Compatibility:

• Beryllium copper mating contacts on both parts
• Brass/brass alloy post materials on both parts
• Contact finish materials compatible within tin and tin-lead specifications

Operational Parameters:

• Both parts rated for -55°C minimum operating temperature
• Both parts maintain active product status
• Both parts classified under identical HTSUS and ECCN codes

The substitute part demonstrates higher current rating (3 A vs. 1 A) and extended upper operating temperature (125°C vs. 105°C), representing performance enhancements rather than deviations from the core substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - ICO-632-STT: Select the ICO-632-STT when RoHS3 compliance is a mandatory requirement for the end application or when operating temperature does not exceed 105°C. This part maintains active status with established inventory levels and meets current environmental compliance standards.

Substitute Selection - 110-99-632-41-001000: The Mill-Max 110-99-632-41-001000 serves as a functional substitute when higher current capacity (3 A vs. 1 A) or extended operating temperature range (-55°C to 125°C) is required. This part is suitable for applications where RoHS non-compliance does not present a constraint. Higher inventory availability (1194 units) may support expedited procurement timelines.

Compliance Considerations: The primary difference between these parts centers on RoHS compliance status. The ICO-632-STT meets ROHS3 requirements, while the Mill-Max substitute does not. Applications subject to RoHS directives must use the Samtec part. Contact finish differences (tin vs. tin-lead) reflect this compliance distinction.

Mechanical and Electrical Equivalence: Both parts maintain identical mechanical footprints, pin configurations, and pitch specifications. Electrical performance is equivalent across the specified operating ranges, with the substitute offering enhanced current handling and thermal tolerance.

Frequently Asked Questions (FAQ)

Q: Can the 110-99-632-41-001000 directly replace the ICO-632-STT in all applications?

A: Direct replacement is possible from a mechanical and electrical standpoint, as both parts share identical 32-position DIP configuration, 0.6" row spacing, and 0.100" pitch specifications. However, RoHS compliance status differs. Applications requiring ROHS3 compliance must use the ICO-632-STT. Applications operating above 105°C or requiring current ratings exceeding 1 A benefit from the Mill-Max substitute's enhanced specifications.

Q: What are the key differences in contact finish between these parts?

A: The ICO-632-STT uses tin contact finish on mating surfaces, while the 110-99-632-41-001000 uses tin-lead finish with specified thickness of 200.0µin (5.08µm). Both finishes are compatible with standard solder termination processes. The tin-lead finish on the substitute reflects its RoHS non-compliant status.

Q: Are the housing materials interchangeable?

A: Both parts use polyester-based housing materials. The ICO-632-STT specifies glass-filled polyester, while the Mill-Max part uses polycyclohexylenedimethylene terephthalate (PCT) polyester. Both materials provide equivalent mechanical support and electrical isolation for through-hole DIP socket applications. Housing material differences do not affect functional substitution.

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

A: The current rating indicates maximum continuous current the socket contacts can safely carry. The ICO-632-STT is rated for 1 A, while the Mill-Max substitute is rated for 3 A. Applications requiring higher current throughput must use the 110-99-632-41-001000. For standard DIP IC applications operating within 1 A limits, both parts perform equivalently.

Q: How do the operating temperature ranges affect part selection?

A: The ICO-632-STT operates from -55°C to 105°C, while the Mill-Max substitute extends to 125°C. Applications in elevated temperature environments (105°C to 125°C) require the substitute part. For standard industrial applications within -55°C to 105°C, both parts are functionally equivalent.

Q: What does "open frame" construction mean for these sockets?

A: Open frame construction indicates the socket lacks a full plastic housing around the contact array. Both parts feature this design, allowing direct access to individual contacts and reducing overall package size. This construction is standard for DIP sockets and does not affect substitution compatibility.

Q: Are there any moisture sensitivity considerations?

A: The Mill-Max substitute specifies Moisture Sensitivity Level (MSL) 1, indicating unlimited moisture tolerance with no special handling requirements. The ICO-632-STT does not specify MSL rating. Both parts are suitable for standard manufacturing and storage environments without moisture control measures.