Molex 0878981826 Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Molex 0878981826 is an active-status surface mount rectangular connector header designed for board-to-board or cable applications. This 18-position, single-row connector operates at 0.100" (2.54mm) pitch and features unshrouded, breakaway construction with solder termination. The component is specified for automotive, general purpose, lighting, medical, and telecommunications applications. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility permits equivalent component selection.

Substiute Parts

0878981826

MolexIn Stock: 9730878981826 Datasheet

Current PartRFQ

TSM-118-01-T-SV

Samtec Inc.In Stock: 1146TSM-118-01-T-SV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0878981826 is determined by strict alignment with the following critical parameters:

• Connector Type: Header configuration (breakaway or cuttable variants acceptable)
• Contact Type: Male pin contacts
• Number of Positions: 18 positions
• Number of Rows: Single row
• Pitch - Mating: 0.100" (2.54mm)
• Mounting Type: Surface mount
• Termination: Solder
• Contact Length - Mating: 0.230" (5.84mm)
• Contact Shape: Square
• Fastening Type: Push-Pull
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The Samtec TSM-118-01-T-SV meets all critical substitution criteria and is classified as a manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the Molex 0878981826 and Samtec TSM-118-01-T-SV are active-status products with identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and EAR99 classification. Both components carry UL94 V-0 material flammability ratings and MSL 1 moisture sensitivity levels, indicating equivalent environmental performance.

The primary distinction between these parts lies in contact material composition and insulation material selection. The Molex part uses copper alloy contacts with polyamide nylon insulation, while the Samtec equivalent employs phosphor bronze contacts with liquid crystal polymer insulation. Both configurations maintain the same electrical interface geometry and solder termination method.

Selection between these parts should be based on design-specific requirements regarding contact material performance and insulation material properties, as both satisfy the core functional and compliance requirements for rectangular connector header applications.

Frequently Asked Questions (FAQ)

Q: What makes the Samtec TSM-118-01-T-SV a valid substitute for the Molex 0878981826?

A: The Samtec part matches all critical substitution parameters: 18-position, single-row, 0.100" pitch male pin header with surface mount solder termination, square contacts, push-pull fastening, UL94 V-0 flammability rating, and ROHS3 compliance. Both parts are active-status products with identical moisture sensitivity levels and regulatory classifications.

Q: Are there differences in physical dimensions between these connectors?

A: The insulation height differs slightly: the Molex part measures 0.098" (2.50mm) while the Samtec part measures 0.100" (2.54mm). This 0.002" variance should be evaluated against specific PCB layout and mating component clearance requirements.

Q: What is the difference between "breakaway" and "cuttable" connector types?

A: Both designations describe headers with segmented construction allowing individual positions to be separated. The Molex part is specified as breakaway, while the Samtec part is specified as cuttable. Both configurations provide equivalent functional capability for board-to-board or cable applications.

Q: Do these connectors have different contact material properties?

A: Yes. The Molex part uses copper alloy contacts while the Samtec part uses phosphor bronze contacts. Both are tin-finished. Contact material selection may influence performance in specific electrical or environmental conditions; design requirements should guide material selection.

Q: Are both parts suitable for automotive and medical applications?

A: The Molex 0878981826 is specified for automotive, general purpose, lighting, medical, and telecommunications applications. The Samtec TSM-118-01-T-SV does not list specific applications in the provided data. Application suitability should be confirmed against design specifications and regulatory requirements for the intended end use.