Molex 0010021057 Equivalent & Substitute Parts

Part Overview

The Molex 0010021057 is a rectangular connector header designed for through-hole mounting with 5 positions at 0.200" (5.08mm) pitch. This connector is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part features male pins, solder termination, and push-pull fastening, suitable for board-to-cable applications in automotive, industrial, medical, and telecommunications environments.

Substiute Parts

0010021057

MolexIn Stock: 11760010021057 Datasheet

Current PartRFQ

0010085051

MolexIn Stock: 74270010085051 Datasheet

MFR RecommendedRFQ

FWS-05-01-T-S

Samtec Inc.In Stock: 965FWS-05-01-T-S Datasheet

MFR RecommendedRFQ

FWS-05-02-T-S

Samtec Inc.In Stock: 1041FWS-05-02-T-S Datasheet

MFR RecommendedRFQ

HFWS-05-01-T-S

Samtec Inc.In Stock: 836HFWS-05-01-T-S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Molex 0010021057 is determined by the following critical parameters that must remain constant:

• Pitch - Mating: 0.200" (5.08mm)
• Number of Positions: 5
• Number of Rows: 1
• Connector Type: Header
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Fastening Type: Push-Pull

The substitute parts identified maintain these core electrical and mechanical parameters. Variations in contact length, insulation height, shrouding configuration, contact material, and insulation material are permissible within the scope of functional equivalence, provided the mating pitch and position count remain unchanged.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status, ensuring long-term availability and supply chain stability. The Molex 0010085051 provides the closest form-factor match within the Molex product line, though it introduces shrouding and increased insulation height compared to the original part.

The Samtec FWS series (FWS-05-01-T-S and FWS-05-02-T-S) and HFWS series (HFWS-05-01-T-S) offer cross-manufacturer alternatives with defined operating temperature ranges (-55°C to 105°C), current ratings (11.4A per contact), and voltage ratings (500VAC). These specifications are not provided for the original part, making them suitable for applications requiring explicit thermal and electrical performance documentation.

All substitute parts maintain ROHS3 compliance and EAR99 export classification, consistent with the original part's regulatory status.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0010085051 directly replace the 0010021057?

A: The 0010085051 maintains the critical mating parameters (5.08mm pitch, 5 positions, 1 row, male pins, through-hole solder termination, push-pull fastening). However, it introduces shrouding and increased insulation height (0.375" vs. 0.126"), which may affect board layout and connector clearance. Mechanical fit verification is required.

Q: What are the key differences between Molex and Samtec alternatives?

A: The Molex 0010085051 uses brass contacts with polyamide insulation, matching the original material composition. Samtec alternatives employ phosphor bronze contacts with different insulation materials (polyester glass-filled or liquid crystal polymer). All maintain the 5.08mm pitch and 5-position configuration. Samtec parts provide explicit operating temperature and current ratings.

Q: Are the Samtec FWS-05-01-T-S and FWS-05-02-T-S interchangeable?

A: Both maintain identical mating pitch, position count, and electrical ratings. The primary difference is contact length: FWS-05-01-T-S has 0.470" mating contact length, while FWS-05-02-T-S has 0.520". Selection depends on application-specific mating depth requirements.

Q: What is the difference between FWS and HFWS series?

A: Both series share identical electrical specifications (11.4A per contact, 500VAC) and operating temperature range (-55°C to 105°C). The HFWS-05-01-T-S uses liquid crystal polymer insulation, while FWS series use polyester glass-filled insulation. Insulation material selection depends on application environmental and thermal requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All identified substitute parts maintain ROHS3 compliance, consistent with the original Molex 0010021057.

Q: What packaging options are available?

A: The Molex 0010085051 is supplied in bulk packaging. Samtec alternatives (FWS-05-01-T-S, FWS-05-02-T-S, HFWS-05-01-T-S) are also supplied in bulk packaging.