ICO-624-SGT DIP Socket 24-Position Equivalent & Substitute Parts

Part Overview

The ICO-624-SGT is a 24-position DIP socket manufactured by Samtec Inc., designed for through-hole mounting of dual inline package integrated circuits. This connector features gold-plated beryllium copper mating contacts with tin-plated brass posts, operating across the industrial temperature range of -55°C to 125°C. The part is ROHS3 compliant and currently active in production with 930 units in stock.

Equivalent and substitute parts are identified based on matching electrical and mechanical specifications: 24-position DIP configuration, 0.6" row spacing, 0.100" pitch, through-hole termination, and compatible operating temperature range. Substitutes from Mill-Max Manufacturing Corp. provide functionally equivalent alternatives with variations in contact finish specifications and housing materials.

Key Parameters

Parameter	ICO-624-SGT
Manufacturer	Samtec Inc.
Number of Positions	24 (2 x 12)
Type	DIP, 0.6" (15.24mm) Row Spacing
Pitch - Mating	0.100" (2.54mm)
Pitch - Post	0.100" (2.54mm)
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Mounting Type	Through Hole
Operating Temperature	-55°C ~ 125°C
Current Rating	1 A
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following core parameters:

Position Count & Configuration: All substitutes maintain 24-position (2 x 12) DIP layout
Row Spacing & Pitch: All substitutes maintain 0.6" row spacing and 0.100" mating/post pitch
Mounting Method: All substitutes use through-hole solder termination
Operating Temperature: All substitutes operate within -55°C to 125°C range
Contact Material: All substitutes use beryllium copper mating contacts and brass-based post materials

Variations among substitutes include:

Mating Contact Finish: Gold or Tin-Lead options
Post Contact Finish: Tin, Gold, or Tin-Lead options
Housing Material: Polyester glass-filled (main part) versus PCT/Polyester (substitutes)
Frame Design: Open Frame (main part and most substitutes) versus Closed Frame (210-43-624-41-001000)
Current Rating: 1 A (main part) versus 3 A (all substitutes)
RoHS Compliance: ROHS3 compliant (main part, 110-13-624-41-001000, 111-43-624-41-001000, 210-43-624-41-001000) versus RoHS non-compliant (110-91-624-41-001000, 110-93-624-41-001000, 110-93-624-41-801000, 110-99-624-41-001000, 111-93-624-41-001000)

Parameter Comparison

Part Number	Manufacturer	Positions	Row Spacing	Mating Finish	Post Finish	Frame Type	Current Rating	RoHS Status	Inventory
ICO-624-SGT	Samtec Inc.	24 (2x12)	0.6"	Gold	Tin	Open	1 A	ROHS3	930
110-13-624-41-001000	Mill-Max	24 (2x12)	0.6"	Gold	Gold	Open	3 A	ROHS3	1135
110-43-624-41-001000	Mill-Max	24 (2x12)	0.6"	Gold	Tin	Open	3 A	ROHS3	2068
110-44-624-41-001000	Mill-Max	24 (2x12)	0.6"	Tin	Tin	Open	3 A	ROHS3	2240
110-91-624-41-001000	Mill-Max	24 (2x12)	0.6"	Gold	Tin-Lead	Open	3 A	Non-compliant	970
110-93-624-41-001000	Mill-Max	24 (2x12)	0.6"	Gold	Tin-Lead	Open	3 A	Non-compliant	1666
110-93-624-41-801000	Mill-Max	24 (2x12)	0.6"	Gold	Tin-Lead	Open + Decoupling	3 A	Non-compliant	886
110-99-624-41-001000	Mill-Max	24 (2x12)	0.6"	Tin-Lead	Tin-Lead	Open	3 A	Non-compliant	1073
111-43-624-41-001000	Mill-Max	24 (2x12)	0.6"	Gold	Tin	Open	3 A	ROHS3	1177
111-93-624-41-001000	Mill-Max	24 (2x12)	0.6"	Gold	Tin-Lead	Open	3 A	Non-compliant	831
210-43-624-41-001000	Mill-Max	24 (2x12)	0.6"	Gold	Tin	Closed	3 A	ROHS3	1220

Engineering Selection Recommendations

ROHS3 Compliant Substitutes (Recommended for regulated applications):

110-13-624-41-001000: Gold mating and post finish, 3 A rating, open frame
110-43-624-41-001000: Gold mating with tin post finish, 3 A rating, open frame, highest inventory (2068 units)
111-43-624-41-001000: Gold mating with tin post finish, 3 A rating, open frame
210-43-624-41-001000: Gold mating with tin post finish, 3 A rating, closed frame for enhanced shielding

RoHS Non-Compliant Substitutes (Legacy applications only):

110-91-624-41-001000: Gold mating with tin-lead post finish
110-93-624-41-001000: Gold mating with tin-lead post finish
110-93-624-41-801000: Gold mating with tin-lead post finish, includes decoupling capacitor feature
110-99-624-41-001000: Tin-lead mating and post finish
111-93-624-41-001000: Gold mating with tin-lead post finish

Frame Design Consideration:

Open frame design (ICO-624-SGT and most substitutes) provides standard DIP socket functionality
Closed frame design (210-43-624-41-001000) offers mechanical retention and shielding benefits

All substitutes maintain mechanical and electrical compatibility with the ICO-624-SGT within their specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can I use a Mill-Max substitute in place of the Samtec ICO-624-SGT?

A: Yes, provided the substitute matches the required electrical and mechanical specifications. All listed Mill-Max parts maintain 24-position DIP configuration, 0.6" row spacing, 0.100" pitch, and -55°C to 125°C operating range. Verify RoHS compliance requirements for your application before selection.

Q: What is the difference between open frame and closed frame DIP sockets?

A: Open frame sockets (ICO-624-SGT, 110-43-624-41-001000, 111-43-624-41-001000, and others) provide standard DIP package retention. Closed frame sockets (210-43-624-41-001000) feature a housing that fully encloses the socket cavity, providing enhanced mechanical retention and electromagnetic shielding.

Q: Does contact finish affect electrical performance?

A: Contact finish affects corrosion resistance and long-term reliability. Gold finishes provide superior corrosion resistance and are preferred for high-reliability applications. Tin and tin-lead finishes are suitable for standard industrial applications. All finishes specified maintain electrical conductivity within the 1-3 A current rating range.

Q: Why do substitute parts have a 3 A current rating while the ICO-624-SGT is rated at 1 A?

A: The 3 A rating on Mill-Max substitutes reflects their design capability. The ICO-624-SGT's 1 A rating is the specified maximum for that particular design. When substituting, the higher current rating of the replacement part does not create compatibility issues; it simply indicates greater current-handling capacity.

Q: Are all substitutes ROHS3 compliant?

A: No. Only 110-13-624-41-001000, 110-43-624-41-001000, 111-43-624-41-001000, and 210-43-624-41-001000 are ROHS3 compliant. Parts containing tin-lead finishes (110-91-624-41-001000, 110-93-624-41-001000, 110-93-624-41-801000, 110-99-624-41-001000, 111-93-624-41-001000) are RoHS non-compliant. Select compliant parts for applications subject to RoHS regulations.

Q: What is the decoupling capacitor feature in 110-93-624-41-801000?

A: The decoupling capacitor feature integrates a capacitor into the socket housing for power supply noise filtering. This is an additional feature beyond standard socket functionality and may be beneficial in noise-sensitive applications.

Q: Can I mix different substitute parts in the same circuit board design?

A: Yes, provided all selected parts meet your application's electrical, mechanical, and compliance requirements. Ensure consistent contact finish specifications across critical signal paths if noise immunity is a design consideration.

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