Molex 0677990004 CompactFlash® Memory Connector - Equivalent & Substitute Parts

Part Overview

The Molex 0677990004 is a 50-position CompactFlash® card connector designed for surface mount, right-angle applications. This connector features tin-lead contact finish and is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and component procurement.

The obsolete status of this part necessitates evaluation of active substitute components that maintain electrical and mechanical compatibility while meeting current manufacturing and compliance requirements.

Substiute Parts

0677990004

MolexIn Stock: 8020677990004 Datasheet

Current PartRFQ

693120015011

Würth ElektronikIn Stock: 1170693120015011 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 0677990004 is determined by the following critical parameters:

• Card Type: CompactFlash® standard (electrical and mechanical interface specification)
• Number of Positions: 50 positions (pin count and contact arrangement)
• Mounting Type: Surface mount, right-angle orientation
• Insertion/Removal Method: Push-in, pull-out mechanism
• Connector Type: Card connector for CompactFlash® applications
• RoHS Compliance: ROHS3 Compliant status for regulatory alignment

The Würth Elektronik 693120015011 satisfies all substitution criteria. While contact finish differs (gold versus tin-lead) and height above board shows minor variation (0.248" versus 0.236"), these parameters remain within acceptable tolerance for CompactFlash® card connector applications and do not prevent functional substitution.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 693120015011 is the designated manufacturer-recommended substitute for the Molex 0677990004. Both components maintain ROHS3 compliance and identical moisture sensitivity classification (MSL 1). The substitute part carries active product status, ensuring continued availability and manufacturing support.

The gold contact finish of the substitute provides enhanced corrosion resistance compared to the tin-lead finish of the original part. The height differential of 0.012" (0.30mm) is within standard PCB layout tolerance for CompactFlash® card connector applications and does not compromise mechanical or electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the Würth Elektronik 693120015011 directly replace the Molex 0677990004 in existing designs?

A: Yes. Both connectors maintain identical CompactFlash® card type specification, 50-position pin count, surface mount right-angle mounting, and push-in/pull-out insertion method. The electrical interface and mechanical footprint are compatible.

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

A: The Molex part uses tin-lead finish; the substitute uses gold finish. Gold provides superior corrosion resistance and is standard in current connector manufacturing. This change does not affect electrical performance or CompactFlash® compatibility.

Q: Does the height difference affect PCB layout?

A: The height above board differs by 0.012" (0.30mm). This variation is within standard tolerance for CompactFlash® applications and does not require PCB redesign.

Q: Are both parts RoHS compliant?

A: Yes. Both the Molex 0677990004 and Würth Elektronik 693120015011 are ROHS3 compliant and carry identical moisture sensitivity level (MSL 1).

Q: Why is the Molex part listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The Würth Elektronik substitute maintains active product status and ensures long-term component availability.

Q: What packaging format is available for the substitute part?

A: The Würth Elektronik 693120015011 is supplied in Cut Tape (CT) packaging format.