ICA-318-SGG DIP Socket 18-Position Equivalent & Substitute Parts

Part Overview

The ICA-318-SGG is an 18-position DIP socket manufactured by Samtec Inc., designed for through-hole mounting of dual inline package integrated circuits. This socket features gold-plated beryllium copper mating contacts with 0.100" (2.54mm) pitch and 0.3" (7.62mm) row spacing. The part is active in production status with RoHS3 compliance and unlimited moisture sensitivity rating.

Equivalent and substitute parts are necessary when the primary part is unavailable, when alternative contact finishes or post materials better suit specific application requirements, or when sourcing from multiple manufacturers is required for supply chain resilience.

Key Parameters

Parameter	Value
Manufacturer Part Number	ICA-318-SGG
Manufacturer	Samtec Inc.
Number of Positions	18 (2 x 9)
Type	DIP, 0.3" (7.62mm) Row Spacing
Pitch - Mating	0.100" (2.54mm)
Contact Finish - Mating	Gold
Contact Material - Mating	Beryllium Copper
Mounting Type	Through Hole
Termination	Solder
Operating Temperature	-55°C ~ 125°C
Current Rating	1 A
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ICA-318-SGG is determined by the following critical parameters:

Core Compatibility Requirements:

Number of positions: 18 (2 x 9)
Pitch - Mating: 0.100" (2.54mm)
Row spacing: 0.3" (7.62mm)
Mounting type: Through Hole
Termination: Solder

Variable Parameters Affecting Substitution:

Contact finish on mating contacts (Gold, Tin, Tin-Lead)
Contact finish on posts (Gold, Tin, Tin-Lead)
Contact finish thickness
Housing material composition
Current rating capability
Post length
Flammability rating
RoHS compliance status

All substitute parts listed maintain identical core compatibility parameters. Variations in contact finish, post material, and current rating represent design alternatives suitable for different application environments and compliance requirements.

Parameter Comparison

Part Number	Manufacturer	Mating Contact Finish	Post Contact Finish	Current Rating (A)	Housing Material	RoHS Status	Inventory (Pcs)
ICA-318-SGG	Samtec Inc.	Gold	Gold	1	Polyester, Glass Filled	ROHS3 Compliant	905
110-13-318-41-001000	Mill-Max Manufacturing Corp.	Gold	Gold	3	PCT, Polyester	ROHS3 Compliant	1222
110-13-318-41-801000	Mill-Max Manufacturing Corp.	Gold	Gold	3	PCT, Polyester	ROHS3 Compliant	1108
110-43-318-41-001000	Mill-Max Manufacturing Corp.	Gold	Tin	3	PCT, Polyester	ROHS3 Compliant	1449
110-43-318-41-605000	Mill-Max Manufacturing Corp.	Gold	Tin	3	PCT, Polyester	ROHS3 Compliant	1196
110-44-318-41-001000	Mill-Max Manufacturing Corp.	Tin	Tin	3	PCT, Polyester	ROHS3 Compliant	1966
110-91-318-41-001000	Mill-Max Manufacturing Corp.	Gold	Tin-Lead	3	PCT, Polyester	RoHS non-compliant	858
110-93-318-41-001000	Mill-Max Manufacturing Corp.	Gold	Tin-Lead	3	PCT, Polyester	RoHS non-compliant	1530
110-99-318-41-001000	Mill-Max Manufacturing Corp.	Tin-Lead	Tin-Lead	3	PCT, Polyester	RoHS non-compliant	2101
111-43-318-41-001000	Mill-Max Manufacturing Corp.	Gold	Tin	3	PCT, Polyester	ROHS3 Compliant	740
18-3518-10	Aries Electronics	Gold	Tin	3	Polyamide (PA46), Nylon 4/6, Glass Filled	ROHS3 Compliant	1411

Engineering Selection Recommendations

For RoHS3 Compliant Applications: Parts 110-13-318-41-001000, 110-13-318-41-801000, 110-43-318-41-001000, 110-43-318-41-605000, 110-44-318-41-001000, 111-43-318-41-001000, and 18-3518-10 all meet ROHS3 compliance requirements. These are suitable for applications subject to RoHS3 regulations.

For Gold-Plated Mating Contacts: Parts 110-13-318-41-001000, 110-13-318-41-801000, 110-43-318-41-001000, 110-43-318-41-605000, 110-91-318-41-001000, 110-93-318-41-001000, 111-43-318-41-001000, and 18-3518-10 maintain gold mating contact finish matching the ICA-318-SGG specification.

For Higher Current Capacity: All Mill-Max and Aries Electronics substitute parts are rated for 3 A, compared to the ICA-318-SGG rating of 1 A. This increased current capacity provides design margin for applications requiring higher signal integrity or power delivery through the socket.

For Post Finish Compatibility:

Gold posts: 110-13-318-41-001000, 110-13-318-41-801000
Tin posts: 110-43-318-41-001000, 110-43-318-41-605000, 111-43-318-41-001000, 18-3518-10
Tin-Lead posts: 110-91-318-41-001000, 110-93-318-41-001000, 110-99-318-41-001000

For Legacy or Non-Compliant Applications: Parts 110-91-318-41-001000, 110-93-318-41-001000, and 110-99-318-41-001000 are RoHS non-compliant and contain Tin-Lead finishes. These are suitable only for applications where RoHS compliance is not required.

Frequently Asked Questions (FAQ)

Q: Can I substitute the ICA-318-SGG with any of the listed Mill-Max parts?

A: Yes, all listed Mill-Max parts (110 and 111 series) maintain the same 18-position DIP configuration, 0.100" pitch, and 0.3" row spacing. The primary differences are contact finish materials and current ratings. Verify that your application's compliance requirements and contact finish specifications align with the substitute part selected.

Q: What is the difference between gold and tin post finishes?

A: Post finish affects solder joint reliability and long-term performance. Gold posts (110-13 series) provide corrosion resistance and are preferred for high-reliability applications. Tin posts (110-43, 111-43, 18-3518-10) offer cost efficiency and are suitable for standard commercial applications. Tin-Lead posts (110-91, 110-93, 110-99) are legacy finishes for non-RoHS applications.

Q: Why does the ICA-318-SGG have a 1 A current rating while substitutes are rated for 3 A?

A: Current rating reflects the socket's design capability for signal and power delivery. The higher 3 A rating of substitute parts indicates enhanced contact design or material selection. For applications requiring only 1 A or less, either rating is acceptable. For applications approaching or exceeding 1 A, the higher-rated substitutes provide additional margin.

Q: Are the Mill-Max 110-13-318-41-001000 and 110-13-318-41-801000 interchangeable?

A: Yes. Both parts are identical in electrical and mechanical specifications. The difference in part number suffix (001000 vs. 801000) reflects internal Mill-Max manufacturing or packaging variations. Both are ROHS3 compliant with gold mating and post contacts.

Q: What is the significance of the 111-43-318-41-001000 having a longer post length (0.170" vs. 0.125")?

A: The longer post length accommodates thicker printed circuit boards or applications requiring deeper solder penetration. This part is otherwise electrically and mechanically equivalent to the ICA-318-SGG and shorter-post alternatives. Verify PCB thickness compatibility before selection.

Q: Can I use the Aries Electronics 18-3518-10 as a direct replacement?

A: Yes. The 18-3518-10 maintains all core compatibility parameters: 18 positions, 0.100" pitch, 0.3" row spacing, through-hole mounting, and solder termination. It is ROHS3 compliant with gold mating contacts and tin posts. The housing material differs (Polyamide vs. Polyester), but this does not affect electrical performance or mechanical fit.

Q: Which substitute part should I use for a new design?

A: For new designs, select from ROHS3-compliant parts: 110-13-318-41-001000, 110-43-318-41-001000, 110-43-318-41-605000, 110-44-318-41-001000, 111-43-318-41-001000, or 18-3518-10. Among these, 110-13-318-41-001000 provides the closest electrical match to the ICA-318-SGG with gold mating and post contacts and full RoHS3 compliance.

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