Molex 0901310921 Equivalent & Substitute Parts

Part Overview

The Molex 0901310921 is a rectangular connector header designed for through-hole mounting in board-to-cable/wire applications. This 2-position, 2-row unshrouded header features male pins with gold-plated mating contacts and tin-plated posts, operating within the C-Grid III 90131 series. The part maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for automotive and general-purpose applications.

Substitute parts become necessary when the original Molex 0901310921 experiences supply constraints, obsolescence of related product lines, or when design requirements permit alternative manufacturers meeting equivalent electrical and mechanical specifications.

Substiute Parts

0901310921

MolexIn Stock: 10730901310921 Datasheet

Current PartRFQ

4-103240-0

TE Connectivity AMP ConnectorsIn Stock: 12794-103240-0 Datasheet

MFR RecommendedRFQ

929665-01-01-I

3MIn Stock: 1419929665-01-01-I Datasheet

MFR RecommendedRFQ

929665-09-01-I

3MIn Stock: 2613929665-09-01-I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0901310921 is determined by the following critical parameters:

Primary Matching Criteria:

• Number of Positions: 2
• Number of Rows: 2
• Row Spacing - Mating: 0.100" (2.54mm)
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Fastening Type: Push-Pull
• Material Flammability Rating: UL94 V-0
• Insulation Color: Black

Secondary Compatibility Factors:

• Contact Finish - Mating: Gold
• Connector Type: Header (with or without Breakaway designation)
• Shrouding: Unshrouded
• Style: Board-to-Board or Board-to-Cable/Wire

The substitute parts listed below satisfy the primary matching criteria. Variations in contact length, insulation height, contact material composition, and post finish are permissible within the scope of rectangular connector substitution standards, provided the mating interface dimensions and electrical characteristics remain compatible.

Parameter Comparison

Engineering Selection Recommendations

3M 929665-01-01-I and 929665-09-01-I (Preferred Substitutes)

Both 3M parts maintain active product status and full RoHS compliance, aligning with the regulatory posture of the original Molex 0901310921. The 929665-01-01-I and 929665-09-01-I differ only in contact post length (0.110" versus 0.145"), with the latter providing extended post engagement suitable for applications requiring deeper board penetration. Both variants carry REACH Unaffected certification and operate across the -40°C to 105°C temperature range. Current rating of 2.5A accommodates standard signal and low-power applications.

TE Connectivity 4-103240-0 (Limited Substitution)

The TE Connectivity 4-103240-0 presents a significant deviation: it is rated for 80 positions rather than 2 positions. While the connector maintains the required 0.100" (2.54mm) row spacing, gold-plated mating contacts, and UL94 V-0 flammability rating, its obsolete product status and RoHS non-compliance create regulatory and supply-chain constraints. This part is not recommended for new designs or applications requiring RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the 3M 929665-01-01-I directly replace the Molex 0901310921 in existing designs?

A: Yes. Both parts share identical position count (2), row configuration (2 rows), row spacing (0.100"/2.54mm), contact type (male pin), mounting method (through-hole solder), and fastening mechanism (push-pull). The primary difference is contact post length: 0.110" (3M) versus 0.114" (Molex). This 0.004" variance is within standard PCB tolerance ranges for through-hole mounting.

Q: What is the difference between 929665-01-01-I and 929665-09-01-I?

A: Both are 3M Series 929 headers with identical electrical and mechanical specifications except for contact post length. The 929665-01-01-I features 0.110" posts, while the 929665-09-01-I provides 0.145" posts. Selection depends on PCB thickness and mounting depth requirements. The extended post length of the 929665-09-01-I accommodates thicker PCBs or applications requiring deeper solder joint engagement.

Q: Why is the TE Connectivity 4-103240-0 listed as a substitute if it has 80 positions?

A: The 4-103240-0 is included in the manufacturer's substitute list but does not meet the primary matching criteria for direct substitution. Its 80-position configuration makes it unsuitable for 2-position applications. This part should only be considered in specialized scenarios where connector modularity or breakaway functionality permits position reduction through selective loading or mechanical modification.

Q: Are there compliance differences between the substitute parts?

A: Yes. The Molex 0901310921 and both 3M parts (929665-01-01-I and 929665-09-01-I) are RoHS3 compliant and REACH unaffected. The TE Connectivity 4-103240-0 is RoHS non-compliant and carries undefined REACH status, making it unsuitable for applications subject to EU environmental regulations or customer RoHS requirements.

Q: What operating temperature range should be considered for substitution?

A: The Molex 0901310921 does not specify an operating temperature range in the provided data. The 3M substitutes operate from -40°C to 105°C, providing a defined thermal envelope for applications requiring temperature-rated components. The TE Connectivity part specifies -65°C to 105°C, offering extended low-temperature capability but with compliance limitations.

Q: Can these connectors be used interchangeably in automotive applications?

A: The Molex 0901310921 is rated for automotive and general-purpose applications. The 3M 929665 series does not specify automotive applications in the provided data. While both maintain UL94 V-0 flammability ratings and identical mechanical interfaces, automotive-specific qualification and testing requirements should be verified with the respective manufacturers before substitution in automotive designs.