Molex 0510210330 Rectangular Connector Housing - Equivalent & Substitute Parts

Part Overview

The Molex 0510210330 is a 3-position receptacle housing for the PicoBlade 51021 series rectangular connector system, designed for applications requiring 1.25mm pitch interconnections. This component is classified as obsolete, necessitating identification of active equivalent parts to maintain supply chain continuity and ensure long-term component availability for new designs and production support.

Substiute Parts

0510210330

MolexIn Stock: 7290510210330 Datasheet

Current PartRFQ

0510210300

MolexIn Stock: 1182960510210300 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 0510210330 is determined by strict equivalence across the following critical parameters:

• Connector type: Receptacle housing
• Contact type: Female socket
• Number of positions: 3
• Pitch specification: 0.049" (1.25mm)
• Number of rows: 1
• Mounting configuration: Free hanging (in-line)
• Contact termination method: Crimp
• Operating temperature range: -40°C to 105°C
• Series compatibility: PicoBlade 51021

The substitute part 0510210300 maintains identical electrical and mechanical specifications across all these parameters, differing only in packaging format and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0510210330 is classified as obsolete. The recommended active substitute is Molex 0510210300, which maintains full electrical and mechanical compatibility while offering active product status and significantly higher inventory availability (118,281 pieces in stock versus 696 pieces for the obsolete variant).

Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The substitute part is available in bulk packaging, whereas the original was supplied in tape and reel format. This packaging difference does not affect functional compatibility or performance characteristics.

For new designs and ongoing production requirements, the 0510210300 should be specified to ensure long-term supply chain stability and component availability.

Frequently Asked Questions (FAQ)

Q: Are the 0510210330 and 0510210300 electrically and mechanically interchangeable?

A: Yes. Both parts are identical in connector type, contact configuration, pitch, number of positions, mounting method, and operating temperature range. They are direct functional equivalents within the PicoBlade 51021 series.

Q: What is the primary difference between these two parts?

A: The 0510210330 is obsolete and supplied in tape and reel packaging, while the 0510210300 is an active product available in bulk packaging. Functionally, they are equivalent.

Q: Does the packaging difference affect compatibility?

A: No. Packaging format does not impact electrical or mechanical performance. The housing specifications, contact termination method, and dimensional characteristics remain identical.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the 0510210330 and 0510210300 are ROHS3 compliant and REACH unaffected.

Q: Why should I transition from the 0510210330 to the 0510210300?

A: The 0510210330 is obsolete with limited remaining inventory. The 0510210300 is an active product with substantially higher stock levels, ensuring reliable supply for current and future production needs.

Q: Can I use the 0510210300 in existing designs that specify the 0510210330?

A: Yes. The parts are functionally equivalent across all critical parameters. No design modifications are required for substitution.