3M 100-018-050 DIP IC Socket 18-Position Equivalent & Substitute Parts

Part Overview

The 3M 100-018-050 is an 18-position DIP IC socket with 0.3" row spacing, gold-plated mating contacts, and through-hole solder termination. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The socket accommodates standard 18-pin DIP packages with 0.100" pitch and provides reliable electrical connection through beryllium copper mating contacts with gold finish.

Key Parameters

Parameter	Value
Manufacturer Part Number	100-018-050
Manufacturer	3M
Number of Positions	18 (2 x 9)
Row Spacing	0.3" (7.62mm)
Pitch - Mating	0.100" (2.54mm)
Contact Finish - Mating	Gold
Contact Material - Mating	Beryllium Copper
Mounting Type	Through Hole
Termination	Solder
Operating Temperature	-65°C ~ 125°C
Current Rating	1 A
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 3M 100-018-050 is determined by the following critical parameters:

Position Count & Row Spacing: All substitutes must maintain 18 positions in 2 x 9 configuration with 0.3" row spacing
Pitch: Mating pitch must remain 0.100" (2.54mm) for DIP package compatibility
Contact Material & Finish: Mating contacts must be beryllium copper with gold plating to ensure electrical performance and reliability
Mounting & Termination: Through-hole solder termination is required for PCB assembly compatibility
Operating Temperature Range: Substitutes must support the -55°C to 125°C range (note: original part supports -65°C minimum)
Current Rating: Original part rated at 1 A; substitutes rated at 3 A provide enhanced capability

All Mill-Max Manufacturing Corp. substitutes listed below meet these core requirements. Variations in post finish (gold, tin, or tin-lead), post contact thickness, and housing material do not affect functional compatibility with standard 18-pin DIP packages.

Parameter Comparison

Parameter	3M 100-018-050	Mill-Max 110-11-318-41-001000	Mill-Max 110-13-318-41-801000	Mill-Max 110-41-318-41-001000	Mill-Max 110-43-318-41-801000	Mill-Max 110-44-318-41-001000	Mill-Max 110-91-318-41-001000	Mill-Max 110-93-318-41-001000	Mill-Max 110-93-318-41-801000	Mill-Max 110-99-318-41-001000	Mill-Max 111-41-318-41-001000
Positions	18 (2 x 9)	18 (2 x 9)	18 (2 x 9)	18 (2 x 9)	18 (2 x 9)	18 (2 x 9)	18 (2 x 9)	18 (2 x 9)	18 (2 x 9)	18 (2 x 9)	18 (2 x 9)
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)	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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Tin	Gold	Gold	Gold	Tin-Lead	Gold
Contact Material - Mating	Beryllium Copper	Beryllium Copper	Beryllium Copper	Beryllium Copper	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	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Operating Temperature	-65°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	1 A	3 A	3 A	3 A	3 A	3 A	3 A	3 A	3 A	3 A	3 A
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation for RoHS3 Compliance: Mill-Max 110-11-318-41-001000, 110-13-318-41-801000, 110-41-318-41-001000, 110-43-318-41-801000, 110-44-318-41-001000, and 111-41-318-41-001000 are all active production parts with ROHS3 compliance certification. These are suitable for new designs and applications requiring regulatory compliance.

For Gold Mating Contact Finish (Preferred for Signal Integrity): Select from Mill-Max 110-11-318-41-001000, 110-13-318-41-801000, 110-41-318-41-001000, 110-43-318-41-801000, 110-91-318-41-001000, 110-93-318-41-001000, 110-93-318-41-801000, or 111-41-318-41-001000. All maintain beryllium copper mating contacts with gold plating.

For Tin Mating Contact Finish: Mill-Max 110-44-318-41-001000 provides tin-plated mating contacts with beryllium copper base material.

For Tin-Lead Mating Contact Finish (Legacy Applications): Mill-Max 110-99-318-41-001000 offers tin-lead plating. Note this part is RoHS non-compliant.

For Extended Post Length (0.170" vs. 0.125"): Mill-Max 111-41-318-41-001000 provides longer termination posts suitable for applications requiring deeper PCB penetration or thicker board assemblies.

For Decoupling Capacitor Feature: Mill-Max 110-13-318-41-801000 and 110-43-318-41-801000 include integrated decoupling capacitor functionality.

All substitutes are rated for 3 A current, exceeding the original 1 A specification, providing enhanced electrical capacity for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can I use any of these Mill-Max sockets as a direct replacement for the 3M 100-018-050?

A: Yes. All listed Mill-Max substitutes maintain the critical parameters: 18-position DIP configuration, 0.3" row spacing, 0.100" mating pitch, beryllium copper mating contacts with gold plating, through-hole solder termination, and -55°C to 125°C operating range. The original part's -65°C minimum is not matched by substitutes; verify your application's minimum temperature requirement.

Q: What is the difference between the various Mill-Max 110 series options?

A: Differences exist in post finish (gold, tin, or tin-lead), mating contact finish thickness, housing material, and integrated features. The 110-11, 110-13, 110-41, 110-43, 110-44, 110-91, 110-93, and 110-99 variants provide options for different compliance requirements, contact finishes, and application-specific needs. All maintain identical DIP socket functionality.

Q: Which substitute should I select for new production requiring RoHS compliance?

A: Choose from Mill-Max 110-11-318-41-001000, 110-13-318-41-801000, 110-41-318-41-001000, 110-43-318-41-801000, 110-44-318-41-001000, or 111-41-318-41-001000. All carry ROHS3 Compliant certification.

Q: What is the difference between the 110-13 and 110-43 variants?

A: Both include decoupling capacitor features and maintain identical electrical specifications. The primary difference is post finish: 110-13 has gold-plated posts, while 110-43 has tin-plated posts.

Q: Does the 111-41-318-41-001000 offer any functional advantage?

A: The 111-41 provides extended termination post length (0.170" versus 0.125"), making it suitable for thicker PCB assemblies or applications requiring deeper board penetration. It also carries UL94 V-0 flammability rating and specifies 10mOhm contact resistance.

Q: Are there inventory considerations when selecting a substitute?

A: All listed substitutes are active production parts with current inventory availability. Mill-Max 110-99-318-41-001000 has the highest inventory (2101 pcs), while 110-91-318-41-001000 has the lowest (858 pcs). Verify current stock levels with your supplier for production scheduling.

Q: Can I mix different Mill-Max socket variants on the same PCB?

A: Yes, provided your application does not require uniform contact finish or post material across all sockets. Verify your design specifications for any requirements regarding contact finish consistency or post plating uniformity.

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