ICA-320-SST Equivalent & Substitute Parts Reference

Part Overview

The ICA-320-SST is a 20-position DIP socket manufactured by Samtec Inc., designed for through-hole mounting applications requiring gold-plated beryllium copper contacts. This component is classified as an open-frame IC socket with 0.3" (7.62mm) row spacing and 0.100" (2.54mm) pitch mating contacts. The part maintains active product status with 742 units currently in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the socket's critical functional dimensions: position count, row spacing, pitch specifications, contact materials, mounting type, and termination method. Alternative sources provide equivalent performance for applications where the primary part is unavailable or where specific compliance requirements necessitate alternative manufacturing sources.

Key Parameters

Parameter	ICA-320-SST Value
Number of Positions	20 (2 x 10)
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 eligibility is determined by strict equivalence across the following critical parameters:

Position and Spacing Requirements: All substitute parts maintain 20 positions in a 2 x 10 configuration with 0.3" (7.62mm) row spacing and 0.100" (2.54mm) mating pitch. These dimensions ensure mechanical compatibility with standard DIP package footprints.

Contact System: Substitute parts utilize beryllium copper mating contacts with gold plating, maintaining the electrical performance and contact resistance characteristics of the original design. Mating contact finish thickness of 10.0µin (0.25µm) is preserved across direct substitutes.

Mounting and Termination: All parts feature through-hole solder termination with 0.100" (2.54mm) post pitch, ensuring compatibility with standard PCB layouts and assembly processes.

Electrical Performance: Operating temperature range, current rating, and contact resistance specifications determine functional equivalence. Parts are grouped based on whether these parameters meet or exceed the original specification.

Compliance Status: RoHS3 compliance is maintained across active substitute parts. Product status (Active vs. Obsolete) is noted for supply chain planning purposes.

Parameter Comparison

Parameter	ICA-320-SST	110-41-320-41-001000	20-3518-10	820-AG11D-ESL-LF	AR 20-HZL-TT	110-43-320-41-001000	110-91-320-41-001000
Manufacturer	Samtec Inc.	Mill-Max Manufacturing Corp.	Aries Electronics	TE Connectivity AMP Connectors	Assmann WSW Components	Mill-Max Manufacturing Corp.	Mill-Max Manufacturing Corp.
Number of Positions	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)	20 (2 x 10)
Row Spacing	0.3" (7.62mm)	0.3" (7.62mm)	0.3" (7.62mm)	0.3" (7.62mm)	0.3" (7.62mm)	0.3" (7.62mm)	0.3" (7.62mm)
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Pitch - Post	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Finish - Mating	Gold	Gold	Gold	Gold	Tin	Gold	Gold
Contact Finish Thickness - Mating	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	Flash	-	30.0µin (0.76µm)	10.0µin (0.25µm)
Contact Material - Mating	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 125°C	Not specified	-55°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating (Amps)	1 A	3 A	3 A	Not specified	3 A	3 A	3 A
Contact Resistance	10mOhm	Not specified	Not specified	10mOhm	4mOhm	Not specified	Not specified
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant
Product Status	Active	Active	Active	Obsolete	Active	Active	Active
Inventory (Pcs)	742	1149	1622	679	2334	2349	847

Engineering Selection Recommendations

Direct Substitutes (Highest Compatibility):

The parts 110-41-320-41-001000 (Mill-Max) and 20-3518-10 (Aries Electronics) provide direct functional equivalence to the ICA-320-SST. Both maintain identical position count, row spacing, mating pitch, contact material, and mounting specifications. These parts exceed the original current rating (3 A vs. 1 A) and maintain ROHS3 compliance with active product status. The 110-41-320-41-001000 offers 1149 units in inventory, while 20-3518-10 provides 1622 units, ensuring supply availability.

Gold-Plated Contact Alternatives:

The 110-43-320-41-001000 (Mill-Max) maintains gold mating contact finish with increased thickness (30.0µin vs. 10.0µin), operating temperature range of -55°C ~ 125°C, and 3 A current rating. This part is ROHS3 compliant and active, with 2349 units in stock. The 110-91-320-41-001000 (Mill-Max) provides identical electrical specifications but carries RoHS non-compliant status due to tin-lead post finish, limiting use in regulated applications.

Tin-Plated Alternative:

The AR 20-HZL-TT (Assmann WSW Components) differs in mating contact finish (tin vs. gold) and operating temperature range (-40°C ~ 105°C vs. -55°C ~ 125°C). This part delivers superior contact resistance (4mOhm vs. 10mOhm), 3 A current rating, and ROHS3 compliance. Selection of this part requires confirmation that tin-plated contacts meet application requirements and that the reduced temperature range is acceptable.

Obsolete Part Consideration:

The 820-AG11D-ESL-LF (TE Connectivity) is classified as obsolete. While it maintains mechanical compatibility and gold contact finish, its obsolete status and limited inventory (679 units) make it unsuitable for new designs or long-term supply planning.

Frequently Asked Questions (FAQ)

Q: Can 110-41-320-41-001000 replace ICA-320-SST in all applications?

A: Yes. The 110-41-320-41-001000 maintains identical mechanical and electrical specifications across all critical parameters: 20-position DIP configuration, 0.3" row spacing, 0.100" pitch, beryllium copper contacts with gold plating, through-hole solder termination, and -55°C ~ 125°C operating range. The higher current rating (3 A vs. 1 A) provides additional margin. Both parts are ROHS3 compliant and active.

Q: What is the difference between gold-plated and tin-plated contact finishes?

A: Gold plating provides superior corrosion resistance and lower contact resistance over extended service life. Tin plating offers lower cost but may oxidize under certain environmental conditions. The AR 20-HZL-TT uses tin mating contacts and delivers 4mOhm contact resistance compared to 10mOhm for gold-plated alternatives. Selection depends on application environment and reliability requirements.

Q: Why does 20-3518-10 not specify an operating temperature range?

A: The operating temperature range is not provided in the available technical data for this part. Confirmation of thermal specifications should be obtained from Aries Electronics before selection for temperature-critical applications.

Q: Is 820-AG11D-ESL-LF suitable for new designs?

A: No. This part carries obsolete product status, indicating discontinued manufacturing and limited future availability. New designs should select from active parts: 110-41-320-41-001000, 20-3518-10, AR 20-HZL-TT, 110-43-320-41-001000, or 110-91-320-41-001000.

Q: What compliance considerations apply to part selection?

A: The ICA-320-SST is ROHS3 compliant. Direct substitutes 110-41-320-41-001000, 20-3518-10, 110-43-320-41-001000, and AR 20-HZL-TT maintain ROHS3 compliance. The 110-91-320-41-001000 is RoHS non-compliant due to tin-lead post finish and should not be used in applications requiring RoHS certification.

Q: Can I use AR 20-HZL-TT if my application operates below -40°C?

A: No. The AR 20-HZL-TT operating temperature range is -40°C ~ 105°C. Applications requiring operation below -40°C must use parts with -55°C minimum rating: ICA-320-SST, 110-41-320-41-001000, 110-43-320-41-001000, or 110-91-320-41-001000.

Q: Are all substitute parts available in the same packaging?

A: Most substitute parts are supplied in tube packaging. The 820-AG11D-ESL-LF packaging is not specified. Confirm packaging requirements with your procurement department before finalizing part selection.

Q: What inventory levels should I consider for supply chain planning?

A: Current inventory levels are: AR 20-HZL-TT (2334 units), 110-43-320-41-001000 (2349 units), 20-3518-10 (1622 units), 110-41-320-41-001000 (1149 units), 110-91-320-41-001000 (847 units), 820-AG11D-ESL-LF (679 units), and ICA-320-SST (742 units). For high-volume applications, AR 20-HZL-TT and 110-43-320-41-001000 offer the highest available stock.

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