A40-LCG Equivalent & Substitute Parts

Part Overview

The A40-LCG is a 40-position DIP socket manufactured by Assmann WSW Components, designed for IC and transistor applications. This through-hole socket features gold-plated contacts and 0.6" (15.24mm) row spacing, supporting standard DIP package configurations. The part is currently in stock with 721 units available. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and procurement options while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Specification
Number of Positions	40 (2 x 20)
Row Spacing	0.6" (15.24mm)
Pitch - Mating	0.100" (2.54mm)
Contact Finish - Mating	Gold
Mounting Type	Through Hole
Termination	Solder
Operating Temperature Range	-55°C ~ 125°C
Features	Open Frame

Substitute Part Grouping Explanation

Substitute parts for the A40-LCG are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Position Count & Configuration: 40 positions in 2 x 20 arrangement
Row Spacing: 0.6" (15.24mm) center-to-center distance
Mating Pitch: 0.100" (2.54mm) contact spacing
Contact Finish: Gold plating on mating surfaces
Mounting Method: Through-hole solder termination
Operating Temperature: -55°C to 125°C range
Socket Type: DIP open frame configuration

All identified substitutes maintain these core parameters, ensuring direct compatibility with standard 40-pin DIP packages and PCB layouts designed for the A40-LCG.

Parameter Comparison

Parameter	A40-LCG (Assmann)	1-1825109-3 (TE Connectivity)	110-13-640-41-001000 (Mill-Max)
Manufacturer	Assmann WSW Components	TE Connectivity AMP Connectors	Mill-Max Manufacturing Corp.
Number of Positions	40 (2 x 20)	40 (2 x 20)	40 (2 x 20)
Row Spacing	0.6" (15.24mm)	0.6" (15.24mm)	0.6" (15.24mm)
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Finish - Mating	Gold	Gold	Gold
Contact Material - Mating	Not specified	Beryllium Copper	Beryllium Copper
Mounting Type	Through Hole	Through Hole	Through Hole
Features	Open Frame	Open Frame	Open Frame
Termination	Solder	Solder	Solder
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Product Status	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant
Inventory (Pcs)	721	1119	911

Engineering Selection Recommendations

All three parts maintain identical electrical and mechanical specifications for DIP socket applications. Selection should be based on the following factors:

Product Status: All parts are listed as Active, ensuring continued manufacturer support and availability.

Compliance: Both substitute parts (TE Connectivity 1-1825109-3 and Mill-Max 110-13-640-41-001000) are ROHS3 compliant. Compliance status for the A40-LCG is not specified in available documentation.

Availability: The Mill-Max part (110-13-640-41-001000) offers the highest inventory level at 911 units, followed by TE Connectivity at 1119 units, with the Assmann part at 721 units.

Series Designation: TE Connectivity parts are designated as Diplomate DL series, while Mill-Max parts belong to the 110 series. Assmann series information is not provided.

Packaging: Mill-Max supplies the part in tube packaging, while packaging information for other manufacturers is not specified.

Frequently Asked Questions (FAQ)

Q: Are these parts electrically interchangeable with the A40-LCG?

A: Yes. All three parts share identical electrical specifications: 40-position DIP configuration, 0.100" (2.54mm) mating pitch, gold contact finish, and -55°C to 125°C operating temperature range. They are suitable for direct substitution in applications designed for 40-pin DIP sockets.

Q: What determines compatibility between the A40-LCG and its substitutes?

A: Compatibility is determined by position count (40 positions in 2 x 20 configuration), row spacing (0.6" / 15.24mm), mating pitch (0.100" / 2.54mm), contact finish (gold), mounting method (through-hole solder), and operating temperature range (-55°C to 125°C). All identified substitutes maintain these parameters.

Q: Are there differences in contact material between these parts?

A: The TE Connectivity and Mill-Max substitutes specify beryllium copper for mating contacts. Contact material for the A40-LCG is not documented in available specifications.

Q: What is the difference between the TE Connectivity and Mill-Max options?

A: Both parts meet the same electrical and mechanical requirements. The Mill-Max part is supplied in tube packaging and belongs to the 110 series. The TE Connectivity part is designated as Diplomate DL series. Contact finish thickness on the post differs slightly: TE Connectivity specifies 30.0µin (0.76µm) while Mill-Max specifies 10.0µin (0.25µm).

Q: Can I use these parts interchangeably on the same PCB?

A: Yes. All parts feature identical footprints with 0.6" row spacing and 0.100" mating pitch, allowing direct PCB layout compatibility without design modifications.

Q: Are all parts RoHS compliant?

A: The TE Connectivity (1-1825109-3) and Mill-Max (110-13-640-41-001000) parts are ROHS3 compliant. RoHS compliance status for the A40-LCG is not specified in available documentation.

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