ICO-318-STT Equivalent & Substitute Parts

Part Overview

The ICO-318-STT is an 18-position DIP socket manufactured by Samtec Inc., designed for through-hole mounting applications. This socket features a 0.3" (7.62mm) row spacing with 0.100" (2.54mm) pitch contacts, tin-plated beryllium copper mating contacts, and brass posts. The component operates across a temperature range of -55°C to 105°C and is rated for 1 A current with 10mOhm contact resistance. The ICO-318-STT maintains active product status and is ROHS3 compliant. Equivalent substitute parts are identified based on matching electrical specifications, mechanical dimensions, and mounting characteristics to ensure functional interchangeability in DIP socket applications.

Substiute Parts

ICO-318-STT

Samtec Inc.In Stock: 1087ICO-318-STT Datasheet

Current PartRFQ

110-99-318-41-001000

Mill-Max Manufacturing Corp.In Stock: 2137110-99-318-41-001000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ICO-318-STT are identified based on strict alignment with the following critical parameters:

Mechanical Compatibility:

• 18-position configuration (2 x 9 arrangement)
• 0.3" (7.62mm) row spacing
• 0.100" (2.54mm) pitch for both mating and post contacts
• Through-hole mounting type
• Open frame design

Electrical Compatibility:

• Beryllium copper mating contacts
• Brass or brass alloy post contacts
• Solder termination
• Contact resistance specifications within acceptable range

Environmental Specifications:

• Operating temperature range overlap
• Material flammability rating compliance
• RoHS or equivalent compliance status

The substitute part 110-99-318-41-001000 (Mill-Max Manufacturing Corp.) meets these core substitution criteria through identical mechanical dimensions, compatible contact materials, and matching mounting characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - ICO-318-STT (Samtec Inc.): Select the ICO-318-STT for applications requiring ROHS3 compliance. This part maintains active product status with confirmed inventory availability (1068 pcs). The tin contact finish and specified 10mOhm contact resistance provide defined electrical characteristics for standard DIP socket applications. Operating temperature range of -55°C to 105°C covers typical industrial and commercial environments.

Substitute Selection - 110-99-318-41-001000 (Mill-Max Manufacturing Corp.): The 110-99-318-41-001000 serves as a functional substitute where higher current capacity (3 A versus 1 A) and extended operating temperature range (-55°C to 125°C) are required. This part is active with higher inventory availability (2101 pcs). The tin-lead contact finish and brass alloy posts provide equivalent mechanical and electrical performance for DIP socket applications. Note that this substitute is RoHS non-compliant; selection depends on regulatory requirements for the end application.

Both parts share identical mechanical dimensions, pitch specifications, and mounting characteristics, ensuring direct interchangeability in PCB layouts and component footprints.

Frequently Asked Questions (FAQ)

Q: What determines if the 110-99-318-41-001000 can replace the ICO-318-STT?

A: Substitution is valid based on matching mechanical specifications: 18-position configuration, 0.3" row spacing, 0.100" pitch, through-hole mounting, and open frame design. Both parts use beryllium copper mating contacts and brass-based post materials with solder termination. The substitute provides higher current rating (3 A) and extended temperature range (-55°C to 125°C), making it suitable for more demanding applications.

Q: Are there differences in contact finish between these parts?

A: Yes. The ICO-318-STT uses tin plating on both mating and post contacts. The 110-99-318-41-001000 uses tin-lead plating with specified thickness of 200.0µin (5.08µm) on both contact surfaces. Both finishes are compatible with standard solder termination processes.

Q: What is the impact of RoHS compliance differences?

A: The ICO-318-STT is ROHS3 compliant, meeting current regulatory requirements for lead-free and restricted substance compliance. The 110-99-318-41-001000 is RoHS non-compliant due to tin-lead plating. Selection between these parts depends on end-product regulatory requirements and customer specifications.

Q: Can the higher current rating of the substitute part affect circuit performance?

A: The 110-99-318-41-001000 is rated for 3 A compared to the ICO-318-STT's 1 A rating. This higher rating does not negatively affect performance in applications requiring 1 A or less. The substitute part provides additional margin for current-carrying capacity without changing electrical characteristics or signal integrity.

Q: Are the post lengths identical between these parts?

A: The ICO-318-STT post length is not specified in the provided data. The 110-99-318-41-001000 specifies a termination post length of 0.125" (3.18mm). Verify post length compatibility with PCB thickness and solder joint requirements for your specific application.

Q: What is the difference in operating temperature ranges?

A: The ICO-318-STT operates from -55°C to 105°C. The 110-99-318-41-001000 operates from -55°C to 125°C, providing a 20°C extended upper temperature limit. For applications in elevated temperature environments, the substitute part offers improved thermal performance.