Molex 0873813874 38-Position Rectangular Connector Equivalent & Substitute Parts

Part Overview

The Molex 0873813874 is a 38-position receptacle connector from the Milli-Grid 87381 series, designed for board-to-board applications with surface mount termination. This connector features a 0.079" (2.00mm) pitch, gold-plated mating contacts, and push-pull fastening. The part is active in production with 927 units currently in stock.

Equivalent and substitute parts are identified when they maintain functional compatibility across critical electrical and mechanical parameters, including connector type, position count, pitch, mounting method, and contact ratings. Substitutes enable design flexibility, supply chain alternatives, and application-specific performance optimization.

Substiute Parts

0873813874

MolexIn Stock: 9610873813874 Datasheet

Current PartRFQ

SMM-119-02-SM-D

Samtec Inc.In Stock: 1086SMM-119-02-SM-D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the Molex 0873813874 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Receptacle
• Contact type: Female socket
• Number of positions: 38
• Pitch - mating: 0.079" (2.00mm)
• Number of rows: 2
• Row spacing - mating: 0.079" (2.00mm)
• Mounting type: Surface mount
• Termination: Solder
• Fastening type: Push-pull

Allowable Variation Parameters:

• Contact finish thickness - mating: May vary (original 15.0µin; substitute up to 30.0µin)
• Insulation height: May vary (original 0.177"; substitute 0.140")
• Operating temperature: May extend (original -55°C ~ 105°C; substitute -55°C ~ 125°C)
• Current rating: May increase (original 1.9A; substitute 3.2A per contact)
• Voltage rating: May increase (original 125V; substitute 350VAC)
• Contact material: May vary (original unspecified; substitute Beryllium Copper)
• Insulation material: May vary (original unspecified; substitute Liquid Crystal Polymer)
• Material flammability rating: May be specified (original unspecified; substitute UL94 V-0)

The Samtec SMM-119-02-SM-D meets all mandatory matching parameters and provides enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the Molex 0873813874 and Samtec SMM-119-02-SM-D are active production parts with established supply availability. Selection between these parts is based on application requirements and compliance needs.

The Molex 0873813874 is ROHS3 compliant and suitable for applications requiring documented regulatory compliance. The Samtec SMM-119-02-SM-D provides enhanced electrical performance with higher current rating (3.2A per contact versus 1.9A), extended operating temperature range (-55°C ~ 125°C versus -55°C ~ 105°C), and higher voltage rating (350VAC versus 125V). The Samtec part also features UL94 V-0 material flammability rating and Beryllium Copper contact material.

Both parts maintain identical mechanical compatibility: 38-position receptacle configuration, 0.079" (2.00mm) pitch, 2-row layout, surface mount termination, and push-pull fastening. Substitution is mechanically and electrically valid for applications within the Molex part's original electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can the Samtec SMM-119-02-SM-D directly replace the Molex 0873813874 in existing designs?

A: Yes. Both parts share identical connector type, position count, pitch, row configuration, mounting method, and termination. The Samtec part provides equal or superior electrical performance across all rated parameters. Physical board layout compatibility requires verification of the 0.037" (0.94mm) difference in insulation height (Molex 0.177" versus Samtec 0.140").

Q: What are the key differences between these two parts?

A: The Samtec SMM-119-02-SM-D offers higher current rating (3.2A per contact versus 1.9A), extended operating temperature range (to 125°C versus 105°C), higher voltage rating (350VAC versus 125V), and UL94 V-0 material flammability rating. The Molex part is documented as ROHS3 compliant. Contact finish thickness on the Samtec part is doubled (30.0µin versus 15.0µin).

Q: Are there packaging differences?

A: Yes. The Molex 0873813874 is supplied in bulk packaging, while the Samtec SMM-119-02-SM-D is supplied in tube packaging. Both formats are suitable for automated assembly processes.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. For applications requiring documented ROHS3 compliance, the Molex part is specified. For applications requiring higher current capacity, extended temperature operation, or higher voltage rating, the Samtec part is specified. Both parts are active in production with adequate inventory availability.

Q: Are there mechanical clearance considerations?

A: The insulation height difference of 0.037" (0.94mm) between parts may affect board-level clearance in space-constrained designs. PCB layout and mating connector positioning must be verified for the selected substitute part.