Molex 0761559603 Equivalent & Substitute Parts

Part Overview

The Molex 0761559603 is a 192-position backplane connector header designed for through-hole PCB mounting with press-fit termination. This Impact series connector features male pins in a 12×16 configuration with 0.053" (1.35mm) pitch and gold-plated contacts rated for 30V operation across -55°C to 85°C. The part is Active status and RoHS3 compliant with MSL 1 rating. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when packaging requirements differ.

Substiute Parts

0761559603

MolexIn Stock: 11380761559603 Datasheet

Current PartRFQ

1934316-1

TE Connectivity AMP ConnectorsIn Stock: 11281934316-1 Datasheet

MFR RecommendedRFQ

1934318-1

TE Connectivity AMP ConnectorsIn Stock: 23051934318-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The identified substitute parts (TE Connectivity 1934316-1 and 1934318-1) share the following critical parameters with the main part: 192-position count, 12×16 row/column configuration, through-hole mounting, press-fit termination, gold contact finish (30.0µin), UL94 V-0 flammability rating, MSL 1 rating, and RoHS compliance. These parameters establish functional and mechanical compatibility for backplane connector applications.

The substitute parts differ in pitch specification (0.075" / 1.90mm versus 0.053" / 1.35mm), voltage rating (250V versus 30V), current rating (0.5A versus unspecified), and operating temperature range (-65°C to 90°C versus -55°C to 85°C). These differences must be evaluated against specific application requirements before substitution.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status with full RoHS compliance and MSL 1 rating, supporting long-term availability and environmental regulatory adherence. The Molex 0761559603 operates within a 30V specification with a tighter pitch of 0.053" (1.35mm), suitable for high-density PCB layouts. The TE Connectivity alternatives (1934316-1 and 1934318-1) provide higher voltage headroom at 250V with a wider 0.075" (1.90mm) pitch and specified 0.5A current rating, accommodating applications requiring greater electrical margin or lower-density spacing.

Selection between substitute parts depends on PCB layout constraints and electrical requirements. The 1934316-1 is packaged in Bulk format, while the 1934318-1 is supplied in Tube packaging. Both TE Connectivity parts are functionally equivalent to each other and differ only in packaging configuration.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity parts directly replace the Molex 0761559603 on existing PCBs?

A: Direct PCB replacement is not possible due to pitch difference. The Molex part uses 0.053" (1.35mm) pitch while TE Connectivity substitutes use 0.075" (1.90mm) pitch. PCB footprint redesign is required for substitution.

Q: What is the significance of the pitch difference between these parts?

A: Pitch determines the physical spacing between connector pins and corresponding PCB holes. The 0.053" pitch of the Molex part enables higher-density layouts, while the 0.075" pitch of TE Connectivity parts requires wider spacing on the PCB. This is a mechanical constraint that cannot be overcome through electrical equivalence alone.

Q: Are the voltage and current ratings interchangeable?

A: The Molex part is rated for 30V with unspecified current. The TE Connectivity substitutes are rated for 250V at 0.5A. Higher ratings provide additional safety margin but do not indicate the parts are interchangeable for all applications. Application voltage and current requirements must be verified against the selected part's ratings.

Q: What is the difference between the two TE Connectivity substitute parts?

A: The 1934316-1 and 1934318-1 are electrically and mechanically identical. The only difference is packaging: 1934316-1 is supplied in Bulk format while 1934318-1 is supplied in Tube format. Selection depends on procurement and handling requirements.

Q: Do all three parts meet the same compliance standards?

A: All three parts are UL94 V-0 rated, MSL 1, and RoHS compliant. The Molex part is RoHS3 compliant, while the TE Connectivity 1934316-1 is RoHS compliant and the 1934318-1 is RoHS3 compliant. All meet current environmental and safety standards for backplane connector applications.