ICA-318-SST Equivalent & Substitute Parts Reference

Part Overview

The ICA-318-SST is an 18-position DIP socket manufactured by Samtec Inc., designed for through-hole mounting applications requiring 0.3" (7.62mm) row spacing. This socket features gold-plated beryllium copper mating contacts with tin-plated brass posts, operating across the temperature range of -55°C to 125°C. The component is classified as Active product status with full RoHS3 compliance.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct functional replacement in circuit board designs without redesign requirements.

Key Parameters

Parameter	ICA-318-SST Value
Number of Positions	18 (2 x 9)
Row Spacing	0.3" (7.62mm)
Pitch - Mating	0.100" (2.54mm)
Pitch - Post	0.100" (2.54mm)
Contact Finish - Mating	Gold
Contact Material - Mating	Beryllium Copper
Mounting Type	Through Hole
Termination	Solder
Operating Temperature Range	-55°C ~ 125°C
Current Rating	1 A
Contact Resistance	10mOhm
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

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

Primary Matching Criteria:

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

Secondary Compatibility Parameters:

Contact finish - Mating: Gold
Contact material - Mating: Beryllium Copper
Operating temperature range: -55°C ~ 125°C (minimum requirement)
Material flammability rating: UL94 V-0
RoHS3 compliance status

Parts are classified as Direct Substitutes when all primary and secondary parameters match the main part. Parts are classified as Similar when one or more secondary parameters deviate but primary parameters remain identical, requiring engineering evaluation for specific applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Positions	Row Spacing	Pitch - Mating	Contact Finish - Mating	Contact Material - Mating	Operating Temperature	Current Rating (A)	Contact Resistance (mOhm)	RoHS Status	Product Status
ICA-318-SST	Samtec Inc.	18 (2 x 9)	0.3" (7.62mm)	0.100" (2.54mm)	Gold	Beryllium Copper	-55°C ~ 125°C	1	10	ROHS3 Compliant	Active
110-41-318-41-001000	Mill-Max Manufacturing Corp.	18 (2 x 9)	0.3" (7.62mm)	0.100" (2.54mm)	Gold	Beryllium Copper	-55°C ~ 125°C	3	—	ROHS3 Compliant	Active
110-87-318-41-001101	Preci-Dip	18 (2 x 9)	0.3" (7.62mm)	0.100" (2.54mm)	Gold	Beryllium Copper	-55°C ~ 125°C	1	10	ROHS3 Compliant	Active
18-3518-10	Aries Electronics	18 (2 x 9)	0.3" (7.62mm)	0.100" (2.54mm)	Gold	Beryllium Copper	—	3	—	ROHS3 Compliant	Active
818-AG11D-ESL-LF	TE Connectivity AMP Connectors	18 (2 x 9)	0.3" (7.62mm)	0.100" (2.54mm)	Gold	Beryllium Copper	-55°C ~ 105°C	—	10	RoHS Compliant	Obsolete
AR 18-HZL-TT	Assmann WSW Components	18 (2 x 9)	0.3" (7.62mm)	0.100" (2.54mm)	Tin	Beryllium Copper	-40°C ~ 105°C	3	4	ROHS3 Compliant	Active
110-91-318-41-001000	Mill-Max Manufacturing Corp.	18 (2 x 9)	0.3" (7.62mm)	0.100" (2.54mm)	Gold	Beryllium Copper	-55°C ~ 125°C	3	—	RoHS non-compliant	Active

Engineering Selection Recommendations

Direct Substitutes (Fully Compatible):

110-87-318-41-001101 (Preci-Dip) is the primary direct substitute for ICA-318-SST. This part maintains identical electrical specifications including 1 A current rating, 10mOhm contact resistance, and -55°C to 125°C operating range. Both parts feature gold-plated beryllium copper mating contacts with UL94 V-0 flammability rating and ROHS3 compliance. The part is currently in Active product status with 3255 units in stock.

110-41-318-41-001000 (Mill-Max Manufacturing Corp.) is a direct substitute with identical mechanical and electrical compatibility. This part exceeds the current rating specification at 3 A versus the 1 A requirement of ICA-318-SST, maintaining full temperature range and gold contact finish specifications. ROHS3 compliance is confirmed. Product status is Active with 1989 units available.

Conditional Substitutes (Application-Dependent):

18-3518-10 (Aries Electronics) provides mechanical and contact material compatibility with identical pin configuration and pitch specifications. Operating temperature range is not specified in available documentation. Current rating is rated at 3 A. This part is packaged in Bulk format rather than Tube. ROHS3 compliance is confirmed. Use this substitute only when operating temperature specifications are not critical to the application.

Not Recommended:

818-AG11D-ESL-LF (TE Connectivity AMP Connectors) is classified as Obsolete product status. Operating temperature range is limited to -55°C to 105°C, which does not meet the full -55°C to 125°C specification of ICA-318-SST. This part should not be selected for new designs.

AR 18-HZL-TT (Assmann WSW Components) features tin mating contact finish instead of gold, and operating temperature range is limited to -40°C to 105°C. These deviations from the main part specification make this substitute unsuitable for applications requiring the full temperature range or gold contact reliability.

110-91-318-41-001000 (Mill-Max Manufacturing Corp.) is classified as RoHS non-compliant, which disqualifies it from applications requiring RoHS3 compliance certification.

Frequently Asked Questions (FAQ)

Q: Can 110-41-318-41-001000 be used as a direct replacement for ICA-318-SST?

A: Yes. Both parts share identical mechanical dimensions (18 positions, 0.3" row spacing, 0.100" pitch), identical contact materials (beryllium copper mating contacts), identical contact finish (gold), and identical operating temperature range (-55°C to 125°C). The 110-41-318-41-001000 has a higher current rating (3 A versus 1 A), which does not create incompatibility. Both parts are ROHS3 compliant and in Active product status.

Q: What is the difference between Direct Substitutes and Similar substitutes?

A: Direct Substitutes match all critical electrical and mechanical parameters of the main part, including current rating, contact resistance, operating temperature range, and contact finish specifications. Similar substitutes maintain primary mechanical compatibility but deviate in one or more secondary parameters such as current rating, contact resistance, or operating temperature range. Similar substitutes require engineering evaluation to confirm suitability for specific applications.

Q: Why is AR 18-HZL-TT not recommended as a substitute?

A: AR 18-HZL-TT features tin mating contact finish instead of gold, and its operating temperature range (-40°C to 105°C) does not extend to the full -55°C to 125°C specification of ICA-318-SST. Applications requiring the full temperature range or gold contact reliability cannot use this part.

Q: Does packaging format affect substitution compatibility?

A: Packaging format (Tube versus Bulk) does not affect electrical or mechanical compatibility. However, packaging format may impact procurement, handling, and assembly processes. 18-3518-10 is supplied in Bulk format while ICA-318-SST is supplied in Tube format. Verify that bulk packaging meets your assembly and storage requirements before selection.

Q: Can 110-91-318-41-001000 be used in applications requiring RoHS3 compliance?

A: No. 110-91-318-41-001000 is classified as RoHS non-compliant. This part cannot be used in applications or markets requiring RoHS3 certification. Select 110-41-318-41-001000 or 110-87-318-41-001101 for RoHS3-compliant applications.

Q: What is the significance of contact resistance specifications?

A: Contact resistance directly affects signal integrity and power dissipation in high-frequency or high-current applications. ICA-318-SST specifies 10mOhm contact resistance. Direct substitutes 110-87-318-41-001101 and 818-AG11D-ESL-LF maintain this specification. AR 18-HZL-TT offers lower contact resistance at 4mOhm, which is advantageous but represents a different design specification.

Q: Is 818-AG11D-ESL-LF suitable for new product designs?

A: No. 818-AG11D-ESL-LF is classified as Obsolete product status. New product designs should not incorporate obsolete components. Select from Active status parts: 110-87-318-41-001101, 110-41-318-41-001000, or 18-3518-10.

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