Molex 0702871256 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0702871256 is a through-hole rectangular connector header with 26 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This component is classified as an active product and serves as a board-to-board or cable interface in applications spanning automotive, general purpose, lighting, medical, and telecommunications sectors. Equivalent and substitute parts are identified based on matching electrical and mechanical specifications that ensure functional compatibility in the target application.

Substiute Parts

0702871256

MolexIn Stock: 11350702871256 Datasheet

Current PartRFQ

6-146252-3

TE Connectivity AMP ConnectorsIn Stock: 645426-146252-3 Datasheet

MFR RecommendedRFQ

892-18-026-10-002101

Preci-DipIn Stock: 746892-18-026-10-002101 Datasheet

MFR RecommendedRFQ

A1-26PA-2.54DSA(71)

Hirose Electric Co LtdIn Stock: 767A1-26PA-2.54DSA(71) Datasheet

MFR RecommendedRFQ

M20-9761346

Harwin Inc.In Stock: 4767M20-9761346 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Molex 0702871256 are qualified based on the following critical parameters:

• Pitch - Mating: 0.100" (2.54mm) — determines PCB footprint compatibility
• Number of Positions: 26 — ensures signal count matching
• Number of Rows: 2 — maintains physical layout compatibility
• Row Spacing - Mating: 0.100" (2.54mm) — ensures proper mating alignment
• Connector Type: Header configuration with male pins
• Mounting Type: Through Hole — PCB assembly method
• Contact Shape: Square — mechanical fit requirement
• Material Flammability Rating: UL94 V-0 — safety compliance
• RoHS Status: ROHS3 Compliant — environmental regulation compliance

All identified substitute parts meet these core parameters. Variations in contact length, insulation height, contact finish thickness, and operating temperature ranges are secondary parameters that may differ between substitutes while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and comply with ROHS3 or RoHS standards. The Molex 0702871256, TE Connectivity 6-146252-3, Preci-Dip 892-18-026-10-002101, Hirose A1-26PA-2.54DSA(71), and Harwin M20-9761346 are functionally equivalent based on core electrical and mechanical parameters.

Selection between these parts should be based on:

• Availability and inventory levels at the time of procurement
• Packaging format requirements (Bulk or Tray)
• Specific operating temperature range requirements for the application
• Contact finish preference (Gold mating surface vs. Tin)
• Insulation material compatibility with assembly processes
• Supply chain and lead time considerations

All parts carry UL94 V-0 flammability ratings and unlimited moisture sensitivity levels, making them suitable for the stated applications in automotive, general purpose, lighting, medical, and telecommunications sectors.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0702871256 be directly replaced with the TE Connectivity 6-146252-3?

A: Yes. Both parts share identical pitch (0.100"), position count (26), row configuration (2 rows), and row spacing (0.100"). Both are through-hole mounted headers with square male pin contacts and UL94 V-0 flammability ratings. The primary difference is termination style (Molex uses kinked pins; TE Connectivity uses standard solder pins) and contact finish thickness on the mating surface.

Q: What is the significance of contact finish differences between substitutes?

A: Contact finish affects mating durability and electrical performance. The Molex 0702871256 and TE Connectivity 6-146252-3 feature gold-plated mating surfaces, while the Harwin M20-9761346 uses tin finish. Gold provides superior corrosion resistance and lower contact resistance over extended mating cycles. Tin finish is suitable for applications with limited mating cycles.

Q: Are there packaging differences between these substitute parts?

A: Yes. The Molex 0702871256, TE Connectivity 6-146252-3, Preci-Dip 892-18-026-10-002101, and Harwin M20-9761346 are supplied in Bulk packaging. The Hirose A1-26PA-2.54DSA(71) is supplied in Tray packaging. Packaging format may affect handling, storage, and assembly line integration.

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

A: All parts are ROHS3 Compliant or RoHS Compliant and carry UL94 V-0 flammability ratings. All are classified as EAR99 for export control purposes and share the same HTSUS code (8536.69.4040). Moisture sensitivity level is 1 (Unlimited) for all parts.

Q: What are the operating temperature ranges for each substitute?

A: The Molex 0702871256 does not specify an operating temperature range. The TE Connectivity 6-146252-3 operates from -65°C to 105°C. The Preci-Dip 892-18-026-10-002101 operates from -55°C to 125°C. The Hirose A1-26PA-2.54DSA(71) operates from -55°C to 85°C. The Harwin M20-9761346 operates from -40°C to 105°C. Application temperature requirements should guide selection.

Q: Can these headers be used interchangeably in automotive applications?

A: All identified parts list automotive as an application area and meet UL94 V-0 flammability requirements. However, specific automotive standards (such as AEC-Q200) are not provided in the technical data. Verification against specific automotive qualification requirements is necessary before final selection.

Q: What is the difference between "Breakaway" and "Cuttable" connector types?

A: Breakaway headers (Molex, TE Connectivity) are designed to separate individual rows or sections along predetermined break points. Cuttable headers (Harwin M20-9761346) allow custom sectioning by cutting the connector body. Both provide flexibility for custom pin configurations, but the implementation method differs.