M20-7824042 Equivalent & Substitute Parts

Part Overview

The M20-7824042 is a 40-position receptacle connector manufactured by Harwin Inc., featuring 0.100" (2.54mm) pitch through-hole mounting with gold-plated mating contacts. This connector is classified as obsolete, making equivalent substitute parts necessary for ongoing system support and new design implementations. The part serves general purpose, industrial, and telecommunications applications requiring board-to-board or cable connectivity with push-pull fastening.

Substiute Parts

M20-7824042

Harwin Inc.In Stock: 966M20-7824042 Datasheet

Current PartRFQ

75915-340LF

Amphenol ICC (FCI)In Stock: 84375915-340LF Datasheet

MFR RecommendedRFQ

75915-440LF

Amphenol ICC (FCI)In Stock: 74775915-440LF Datasheet

MFR RecommendedRFQ

801-43-040-10-001000

Mill-Max Manufacturing Corp.In Stock: 722801-43-040-10-001000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M20-7824042 is determined by the following critical parameters: 40-position count, 0.100" (2.54mm) mating pitch, receptacle connector type with female socket contacts, through-hole solder termination, push-pull fastening mechanism, and UL94 V-0 flammability rating. The substitute parts are grouped into two categories based on contact finish specifications:

Category 1 - Gold Mating Contact Finish: Parts 75915-340LF and 801-43-040-10-001000 maintain gold-plated mating contacts, providing direct electrical and mechanical compatibility with the original M20-7824042 specification.

Category 2 - Tin Mating Contact Finish: Part 75915-440LF features tin-plated mating contacts instead of gold, representing a contact finish variation while maintaining all other critical mechanical and electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

75915-340LF (Amphenol ICC): This substitute provides the closest functional equivalence to the M20-7824042, maintaining gold mating contact finish and identical pitch and position specifications. The part is active in production status with RoHS compliance certification. The insulation height matches the original specification at 0.335" (8.51mm). This part is suitable for direct replacement in applications where the original M20-7824042 was specified.

75915-440LF (Amphenol ICC): This variant maintains mechanical and electrical compatibility but substitutes tin plating for the mating contact finish. The part is active in production with RoHS compliance. Selection of this part is appropriate only when tin contact finish is acceptable for the application's electrical and environmental requirements.

801-43-040-10-001000 (Mill-Max): This substitute maintains gold mating contact finish and is ROHS3 compliant, matching the original part's compliance status. The insulation height differs at 0.276" (7.00mm) compared to the original 0.335" (8.51mm), which may affect mechanical fit in space-constrained applications. This part is active in production and suitable for applications where the reduced insulation height does not create mechanical interference.

Frequently Asked Questions (FAQ)

Q: Can 75915-340LF directly replace M20-7824042 in existing designs? A: Yes. The 75915-340LF maintains identical mating pitch (0.100"), position count (40), contact type (female socket), mounting method (through-hole solder), fastening mechanism (push-pull), and mating contact finish (gold). The insulation height is identical at 0.335" (8.51mm). Direct substitution is mechanically and electrically compatible.

Q: What is the difference between 75915-340LF and 75915-440LF? A: The primary difference is the mating contact finish. The 75915-340LF features gold-plated mating contacts, while the 75915-440LF features tin-plated mating contacts. All other mechanical and electrical parameters are identical. Selection depends on application requirements for contact finish material.

Q: Why does 801-43-040-10-001000 have a different insulation height? A: The 801-43-040-10-001000 has an insulation height of 0.276" (7.00mm) compared to the original 0.335" (8.51mm). This dimensional difference is inherent to the Mill-Max design. Verify that this reduced height does not create mechanical interference in your PCB layout or connector housing before selection.

Q: Are all substitute parts RoHS compliant? A: Yes. The M20-7824042 is ROHS3 compliant. The 75915-340LF and 75915-440LF are RoHS compliant. The 801-43-040-10-001000 is ROHS3 compliant. All parts meet RoHS requirements for new designs.

Q: What is the packaging format for substitute parts? A: The 75915-340LF, 75915-440LF, and 801-43-040-10-001000 are supplied in tube packaging, suitable for automated assembly processes and manual component handling.

Q: Can I use 801-43-040-10-001000 if space is limited on my PCB? A: The reduced insulation height of 801-43-040-10-001000 (0.276" versus 0.335") may provide space advantages in constrained layouts. However, verify that the different contact material (beryllium copper versus phosphor bronze in the original) and contact shape (circular versus square) do not affect your mating connector compatibility before implementation.