Molex 0492250821 Equivalent & Substitute Parts

Part Overview

The Molex 0492250821 is an 11-position (8 + 3) microSD card connector featuring push-push insertion and ejection mechanism with right-angle surface mount configuration. This connector is designed for Secure Digital - microSD™ applications requiring gold-plated contacts and reverse-bottom mounting.

The 0492250821 carries an Obsolete product status, making identification of compatible substitute components essential for ongoing design support, maintenance, and production continuity. Active alternatives with equivalent functional performance are available to ensure uninterrupted supply chain access.

Substiute Parts

0492250821

MolexIn Stock: 9210492250821 Datasheet

Current PartRFQ

5027740891

MolexIn Stock: 3604365027740891 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Molex 5027740891 qualifies as a functional substitute for the 0492250821 based on the following critical parameters:

Matching Parameters:

• Manufacturer: Molex (same manufacturer ensures design compatibility and quality standards)
• Card Type: Secure Digital - microSD™ (identical card interface standard)
• Connector Type: Connector and Ejector (same mechanical ejection mechanism)
• Insertion/Removal Method: Push In, Push Out (identical user interface)
• Mounting Type: Surface Mount, Right Angle (same PCB orientation and installation method)
• Contact Finish: Gold (identical electrical interface material)
• Mounting Feature: Reverse - Bottom (same board-side configuration)
• RoHS Status: ROHS3 Compliant (equivalent environmental compliance)
• Moisture Sensitivity Level: 1 (Unlimited) (identical handling requirements)

Allowable Variation:

• Number of Positions: 10 (8 + 2) vs. 11 (8 + 3) — The substitute contains one fewer position contact, which is acceptable for applications not requiring the additional contact function
• Height Above Board: 0.071" (1.80mm) vs. 0.077" (1.95mm) — The 0.006" (0.15mm) reduction in height is within typical PCB clearance tolerances for surface-mount applications

The 5027740891 carries Active product status, ensuring long-term availability and manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

The Molex 5027740891 is the designated manufacturer substitute for the obsolete 0492250821. Both components maintain ROHS3 compliance and MSL Level 1 classification, ensuring equivalent environmental and handling standards.

The 5027740891 offers the advantage of Active product status, providing assured long-term availability, manufacturing continuity, and technical support. The reduction in contact positions (10 vs. 11) and board height (0.071" vs. 0.077") are within acceptable engineering tolerances for standard microSD card applications and do not compromise functional performance in typical use cases.

Selection of the 5027740891 is appropriate for new designs, production restocking, and field replacements where the 0492250821 is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the Molex 5027740891 directly replace the 0492250821 in existing designs?

A: The 5027740891 is functionally compatible for applications utilizing the standard 8-contact microSD data interface. The reduction from 11 to 10 total positions affects only non-standard contact configurations. If your design uses all 11 positions, compatibility must be evaluated against specific application requirements.

Q: What is the significance of the position count difference (11 vs. 10)?

A: The 11-position configuration includes 8 standard microSD data contacts plus 3 additional positions. The 10-position substitute includes 8 standard data contacts plus 2 additional positions. Standard microSD card operation requires only the 8 data contacts; the additional positions are application-specific and may not be necessary for all designs.

Q: Are there any PCB layout considerations due to the height difference?

A: The 5027740891 is 0.006" (0.15mm) lower than the 0492250821. This reduction typically does not impact PCB clearance or component spacing in standard surface-mount layouts. Verify clearance to adjacent components and enclosure constraints in your specific design.

Q: Why is the 0492250821 listed as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 5027740891 represents the active replacement in Molex's product portfolio, ensuring continued supply chain access and manufacturing support.

Q: Are packaging options different between these parts?

A: The 0492250821 packaging is not specified in available data. The 5027740891 is available in Cut Tape (CT) and Digi-Reel® packaging formats, providing standard component distribution options.

Q: Do both connectors meet the same compliance standards?

A: Both components are ROHS3 compliant and carry MSL Level 1 classification. The 5027740891 additionally specifies REACH Unaffected status. Both share identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications.