Molex 5042811700 FPC Connector - Equivalent & Substitute Parts

Part Overview

The Molex 5042811700 is a 17-position FPC (Flat Flexible) connector with 0.30mm pitch, designed for surface mount right-angle applications. This connector features top and bottom contacts for dual-sided connectivity in compact form factors. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing design support and component sourcing.

Substiute Parts

5042811700

MolexIn Stock: 9975042811700 Datasheet

Current PartRFQ

5035661702

MolexIn Stock: 6835035661702 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for FPC connectors is determined by strict alignment of electrical and mechanical parameters. The primary criteria are:

• Number of positions (17 required)
• Pitch specification (0.30mm mandatory)
• Mounting configuration (surface mount, right angle)
• Voltage and current ratings (must meet or exceed 50V, 0.3A)
• Operating temperature range (must support -40°C to 85°C minimum)
• Contact material and finish (phosphor bronze with gold plating)
• Housing material (LCP, glass filled)
• RoHS and compliance status

The Molex 5035661702 qualifies as a substitute based on matching position count, pitch, mounting type, voltage rating, and compliance certifications. However, differences in contact configuration, current rating, and operating temperature range must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The Molex 5035661702 is an active product with current manufacturing support, making it suitable for new designs and ongoing component availability. Both parts maintain ROHS3 compliance and identical MSL ratings, ensuring equivalent environmental and regulatory standing.

Key considerations for substitution:

The 5035661702 operates across an extended temperature range (-40°C to 105°C versus -40°C to 85°C), providing broader thermal performance. However, the current rating is reduced from 0.3A to 0.2A, requiring verification that application current demands do not exceed 0.2A. The contact configuration differs—the substitute provides bottom contacts only, whereas the original part features top and bottom contacts. This architectural difference necessitates PCB layout and mechanical assembly evaluation.

Both connectors share identical pitch, position count, mounting orientation, voltage rating, and material specifications, supporting direct mechanical and electrical compatibility at the connector interface level.

Frequently Asked Questions (FAQ)

Q: Can the 5035661702 directly replace the 5042811700 in existing designs?

A: Direct replacement requires verification of three factors: (1) application current does not exceed 0.2A, (2) PCB layout accommodates bottom-contact-only configuration, and (3) operating temperature remains within -40°C to 105°C. Mechanical mounting and pitch alignment are compatible.

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

A: The original part provides both top and bottom contacts for dual-sided connectivity. The substitute provides bottom contacts only. This affects signal routing, ground plane connectivity, and PCB layer stackup. Design review is required to confirm functional equivalence.

Q: Are there compliance or supply chain advantages to using the active substitute?

A: The 5035661702 is an active product with ongoing manufacturing support, whereas the 5042811700 is obsolete. Active status ensures continued availability, manufacturing consistency, and compliance documentation updates. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings.

Q: What is the impact of the reduced current rating?

A: The substitute is rated for 0.2A maximum continuous current, compared to 0.3A for the original part. Applications requiring current above 0.2A per contact cannot use this substitute. Verify actual application current draw before substitution.

Q: Are the operating temperature ranges interchangeable?

A: The substitute supports a wider range (-40°C to 105°C) compared to the original (-40°C to 85°C). Applications operating within the original range are fully compatible. Applications requiring operation above 85°C benefit from the extended range of the substitute.