ICO-143-S8A-T Equivalent & Substitute Parts

Part Overview

The ICO-143-S8A-T is a 14-position DIP socket manufactured by 3M, designed for through-hole mounting of dual inline package integrated circuits. This connector features tin-plated phosphor bronze contacts with 0.100" (2.54mm) pitch and 0.3" (7.62mm) row spacing. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	ICO-143-S8A-T
Manufacturer	3M
Number of Positions	14 (2 x 7)
Type	DIP, 0.3" (7.62mm) Row Spacing
Pitch - Mating	0.100" (2.54mm)
Contact Finish - Mating	Tin
Contact Material - Mating	Phosphor Bronze
Mounting Type	Through Hole
Termination	Solder
Operating Temperature	-65°C ~ 105°C
Current Rating	1 A
Housing Material	Polyester, Glass Filled
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the ICO-143-S8A-T is determined by strict electrical and mechanical compatibility across the following parameters:

Primary Compatibility Criteria:

Number of Positions: 14 (2 x 7)
Pitch - Mating: 0.100" (2.54mm)
Row Spacing: 0.3" (7.62mm)
Mounting Type: Through Hole
Termination: Solder

Secondary Compatibility Considerations:

Contact Finish - Mating (Tin or Gold acceptable for signal integrity)
Contact Material - Mating (Phosphor Bronze or Beryllium Copper acceptable)
Operating Temperature Range (substitute must meet or exceed application requirements)
Current Rating (substitute must meet or exceed 1 A requirement)
Housing Material (Polyester or PCT acceptable)

Substitutes are grouped into two categories: direct 3M equivalents (4800 series) and alternative manufacturer options (Mill-Max 110 series). All listed substitutes maintain identical mechanical footprint and electrical interface compatibility with the original ICO-143-S8A-T.

Parameter Comparison

Part Number	Manufacturer	Positions	Pitch (Mating)	Row Spacing	Contact Finish (Mating)	Contact Material (Mating)	Operating Temp	Current Rating	Product Status	RoHS Status
ICO-143-S8A-T	3M	14 (2 x 7)	0.100" (2.54mm)	0.3" (7.62mm)	Tin	Phosphor Bronze	-65°C ~ 105°C	1 A	Obsolete	Non-compliant
4814-3004-CP	3M	14 (2 x 7)	0.100" (2.54mm)	0.3" (7.62mm)	Tin	Phosphor Bronze	-25°C ~ 85°C	1 A	Active	Compliant
4814-3000-CP	3M	14 (2 x 7)	0.100" (2.54mm)	0.3" (7.62mm)	Tin	Phosphor Bronze	-25°C ~ 85°C	1 A	Active	Compliant
101-93-314-41-560000	Mill-Max	14 (2 x 7)	0.100" (2.54mm)	0.3" (7.62mm)	Gold	Beryllium Copper	-55°C ~ 125°C	3 A	Active	ROHS3 Compliant
110-13-314-41-001000	Mill-Max	14 (2 x 7)	0.100" (2.54mm)	0.3" (7.62mm)	Gold	Beryllium Copper	-55°C ~ 125°C	3 A	Active	ROHS3 Compliant
110-13-314-41-801000	Mill-Max	14 (2 x 7)	0.100" (2.54mm)	0.3" (7.62mm)	Gold	Beryllium Copper	-55°C ~ 125°C	3 A	Active	ROHS3 Compliant
110-41-314-41-001000	Mill-Max	14 (2 x 7)	0.100" (2.54mm)	0.3" (7.62mm)	Gold	Beryllium Copper	-55°C ~ 125°C	3 A	Active	ROHS3 Compliant
110-43-314-41-001000	Mill-Max	14 (2 x 7)	0.100" (2.54mm)	0.3" (7.62mm)	Gold	Beryllium Copper	-55°C ~ 125°C	3 A	Active	ROHS3 Compliant
110-43-314-41-605000	Mill-Max	14 (2 x 7)	0.100" (2.54mm)	0.3" (7.62mm)	Gold	Beryllium Copper	-55°C ~ 125°C	3 A	Active	ROHS3 Compliant
110-43-314-41-801000	Mill-Max	14 (2 x 7)	0.100" (2.54mm)	0.3" (7.62mm)	Gold	Beryllium Copper	-55°C ~ 125°C	3 A	Active	ROHS3 Compliant
110-44-314-41-001000	Mill-Max	14 (2 x 7)	0.100" (2.54mm)	0.3" (7.62mm)	Tin	Beryllium Copper	-55°C ~ 125°C	3 A	Active	ROHS3 Compliant

Engineering Selection Recommendations

3M 4800 Series (Direct Manufacturer Equivalents): 4814-3004-CP and 4814-3000-CP are active production equivalents from the original manufacturer. Both maintain identical mechanical and electrical specifications to the ICO-143-S8A-T with the exception of operating temperature range (-25°C ~ 85°C versus -65°C ~ 105°C). These parts are RoHS compliant and suitable for applications within the reduced temperature specification. Inventory availability is high (3313 and 4751 units respectively).

Mill-Max 110 Series (Alternative Manufacturer Options): The Mill-Max 110 series sockets provide enhanced electrical performance with higher current ratings (3 A versus 1 A) and extended operating temperature range (-55°C ~ 125°C). These parts are ROHS3 compliant and feature beryllium copper mating contacts with gold plating, offering superior contact reliability compared to tin-plated phosphor bronze. Selection within the 110 series depends on specific contact finish requirements:

110-13-314-41-001000 and 110-13-314-41-801000: Gold mating contacts with gold post finish
110-41-314-41-001000: Gold mating contacts with tin post finish
110-43-314-41-001000, 110-43-314-41-605000, 110-43-314-41-801000: Gold mating contacts with tin post finish; 110-43-314-41-605000 includes decoupling capacitor feature and specified contact resistance of 10mOhm
110-44-314-41-001000: Tin mating contacts with tin post finish

Mill-Max 101 Series: 101-93-314-41-560000 provides gold mating contacts with tin-lead post finish and extended temperature range. This option is suitable for applications requiring maximum thermal performance and superior contact durability.

Frequently Asked Questions (FAQ)

Q: Can I use a Mill-Max socket as a direct replacement for the ICO-143-S8A-T? A: Yes. All listed Mill-Max substitutes maintain identical 14-position DIP configuration, 0.100" (2.54mm) pitch, and 0.3" (7.62mm) row spacing. Mechanical and electrical interfaces are fully compatible. The primary differences are enhanced current rating (3 A versus 1 A), extended operating temperature range, and improved contact materials.

Q: What is the difference between tin and gold contact finishes? A: Tin-plated contacts (ICO-143-S8A-T, 4814 series, 110-44-314-41-001000) provide cost-effective performance for standard applications. Gold-plated contacts (Mill-Max 101 and 110 series) offer superior corrosion resistance and lower contact resistance, beneficial for high-reliability applications or environments with corrosive exposure.

Q: Does the operating temperature range difference matter? A: The ICO-143-S8A-T operates from -65°C to 105°C. The 3M 4814 series operates from -25°C to 85°C, which is narrower. Mill-Max alternatives operate from -55°C to 125°C, which exceeds the original specification. Selection depends on your application's actual temperature requirements.

Q: What is the difference between phosphor bronze and beryllium copper contacts? A: Both materials are acceptable for DIP socket applications. Phosphor bronze (original part) provides standard performance. Beryllium copper (Mill-Max alternatives) offers superior spring characteristics and contact durability, particularly beneficial for high-cycle insertion applications.

Q: Are all substitutes RoHS compliant? A: The original ICO-143-S8A-T is RoHS non-compliant. The 3M 4814 series is RoHS compliant. All Mill-Max alternatives are ROHS3 compliant. Compliance requirements depend on your application and regional regulations.

Q: What does the packaging designation mean? A: The ICO-143-S8A-T has no specified packaging. The 3M 4814 series is supplied in tubes. Mill-Max parts are supplied in tubes. Tube packaging provides organized component handling and is standard for production environments.

Q: Can I substitute a tin-finish socket with a gold-finish socket? A: Yes. Gold-finish sockets are electrically and mechanically compatible with tin-finish applications. The upgrade provides enhanced contact reliability and corrosion resistance without affecting circuit function.

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