Molex 0022235021 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0022235021 is a vertical rectangular connector header designed for through-hole mounting in 2-position, single-row configurations with 0.100" (2.54mm) pitch spacing. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and procurement continuity. The KK254 series connector provides board-to-board or cable interconnection with shrouded single-wall construction and friction lock fastening.

Substiute Parts

0022235021

MolexIn Stock: 9090022235021 Datasheet

Current PartRFQ

0022232021

MolexIn Stock: 2062350022232021 Datasheet

MFR RecommendedRFQ

644874-2

TE Connectivity AMP ConnectorsIn Stock: 5386644874-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0022235021 is determined by strict alignment with the following critical parameters:

• Connector Type & Contact Configuration: Header with male pins
• Pitch Specification: 0.100" (2.54mm) mating pitch
• Position Count & Row Configuration: 2 positions, single row
• Mounting Method: Through-hole termination
• Shrouding Design: Shrouded single-wall construction
• Fastening Mechanism: Friction lock engagement
• Electrical & Environmental Compliance: UL94 V-0 flammability rating, ROHS3 compliance, MSL 1

The identified substitute parts maintain these core parameters while operating within acceptable tolerances for contact geometry, insulation material composition, and contact finish specifications.

Parameter Comparison

Engineering Selection Recommendations

Molex 0022232021 is the primary substitute for the obsolete Molex 0022235021. Both components share identical pitch, position count, mounting configuration, and shrouding design. The 0022232021 maintains active product status with significantly higher inventory availability (206,136 units in stock versus 888 units for the original part). Both parts carry ROHS3 compliance and UL94 V-0 flammability certification. The primary difference is insulation material composition (polyamide/nylon versus polyester/glass-filled) and contact finish thickness (100.0µin versus 60.0µin), which do not affect functional compatibility in standard applications. Packaging is available in bulk format.

TE Connectivity 644874-2 serves as an alternative substitute from a different manufacturer. This MTA-100 series connector maintains the same 2.54mm pitch, 2-position single-row configuration, and through-hole mounting. The TE part provides specified operating temperature range (-55°C to 105°C) and voltage rating (250VAC), which are not documented for the Molex original. Minor geometric variations exist in contact post length (0.125" versus 0.140") and overall contact length (0.520" versus 0.560"), which remain within acceptable mechanical tolerances for standard PCB applications. Contact material differs (copper alloy versus brass), and insulation material is thermoplastic rather than polyester or polyamide. ROHS3 compliance and UL94 V-0 certification are maintained.

Selection between the two substitutes depends on application-specific requirements: the Molex 0022232021 provides closest form-factor alignment, while the TE Connectivity 644874-2 offers documented thermal and electrical specifications suitable for temperature-sensitive or high-voltage applications.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0022232021 be used as a direct replacement for the 0022235021?

A: Yes. Both connectors share identical pitch (0.100"), position count (2), row configuration (1), mounting type (through-hole), shrouding design (shrouded single-wall), and fastening mechanism (friction lock). Differences in insulation material and contact finish thickness do not affect mechanical or electrical compatibility in standard board-to-board or cable interconnection applications.

Q: What are the key differences between the Molex 0022232021 and TE Connectivity 644874-2?

A: Both maintain the critical 2.54mm pitch and 2-position configuration. The TE part features documented operating temperature (-55°C to 105°C) and voltage specifications (250VAC), while the Molex part does not specify these parameters. Contact post length differs slightly (0.125" versus 0.140"), and contact material composition varies (copper alloy versus brass). Insulation material also differs (thermoplastic versus polyamide). These variations remain within acceptable tolerances for standard applications but should be evaluated for temperature-sensitive or high-voltage designs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both the Molex 0022232021 and TE Connectivity 644874-2 carry ROHS3 compliance certification, matching the original Molex 0022235021.

Q: What is the significance of the contact finish thickness difference?

A: The original part specifies 60.0µin (1.52µm) tin finish thickness on mating contacts, while the Molex substitute provides 100.0µin (2.54µm). Thicker plating generally provides enhanced durability and corrosion resistance over extended mating cycles, but both thicknesses meet standard connector performance requirements for general-purpose applications.

Q: Does insulation material affect connector performance?

A: Insulation material composition (polyester/glass-filled, polyamide/nylon, or thermoplastic) affects mechanical properties, temperature stability, and chemical resistance. For standard room-temperature applications with typical environmental exposure, all three materials provide equivalent functional performance. Applications involving elevated temperatures, chemical exposure, or extreme mechanical stress should reference the specific material properties of the selected substitute.

Q: What packaging options are available for the substitute parts?

A: The Molex 0022232021 is available in bulk packaging. The TE Connectivity 644874-2 is also available in bulk packaging. Specific packaging configurations should be confirmed with the supplier based on procurement requirements.