MQ115-4PA-2A(21) Equivalent & Substitute Parts

Part Overview

The MQ115-4PA-2A(21) is a 4-position rectangular connector manufactured by Hirose Electric Co Ltd, designed for through-hole mounting applications. This connector is classified as obsolete, which necessitates identification of active equivalent models to maintain design continuity and ensure component availability for production and field service applications.

Substiute Parts

MQ115-4PA-2A(21)

Hirose Electric Co LtdIn Stock: 1077MQ115-4PA-2A(21) Datasheet

Current PartRFQ

MQ115-4PA-2A(71)

Hirose Electric Co LtdIn Stock: 894MQ115-4PA-2A(71) Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MQ115-4PA-2A(21) is based on the following critical parameters:

• Series Compatibility: Both parts belong to the MQ115 series, ensuring mechanical and electrical compatibility
• Position Count: Both connectors feature 4 positions, maintaining pin-to-pin compatibility
• Connector Type: Both are receptacle connectors with male pin contact type
• Mounting Configuration: Through-hole mounting is preserved in the substitute part
• Electrical Ratings: Current rating of 2A and voltage rating of 250VAC are maintained
• Compliance: Both parts meet ROHS3 compliance and MSL Level 1 requirements
• Termination Method: Solder termination is consistent across both parts

The MQ115-4PA-2A(71) serves as an active equivalent within the same product series, offering identical functional specifications with the advantage of current production status and ongoing availability.

Parameter Comparison

Engineering Selection Recommendations

The MQ115-4PA-2A(71) is the appropriate substitute for the obsolete MQ115-4PA-2A(21) based on the following criteria:

• Product Status: The substitute part maintains active production status, ensuring long-term component availability and supply chain continuity
• Series Alignment: Both connectors are members of the MQ115 series, guaranteeing mechanical interchangeability and electrical performance equivalence
• Compliance Certification: Both parts satisfy ROHS3 compliance requirements and carry identical MSL Level 1 ratings, meeting environmental and reliability standards
• Functional Equivalence: The 4-position configuration, receptacle type, male pin contact design, and solder termination are preserved, enabling direct substitution in existing designs
• Electrical Performance: The substitute part provides specified current and voltage ratings (2A, 250VAC) consistent with the original connector's intended application

Frequently Asked Questions (FAQ)

Q: Can the MQ115-4PA-2A(71) be used as a direct replacement for the MQ115-4PA-2A(21)?

A: Yes. Both connectors share the same series designation, position count, connector type, and termination method. The substitute part is mechanically and electrically compatible with the original part.

Q: What is the primary difference between these two connector variants?

A: The MQ115-4PA-2A(71) features a right-angle mounting configuration, whereas the original part number designation does not specify this detail. Both maintain identical electrical specifications and pin configurations.

Q: Are there any compliance or certification differences between the two parts?

A: No. Both parts meet ROHS3 compliance standards and carry MSL Level 1 ratings. There are no compliance or certification gaps between the original and substitute parts.

Q: Why is the MQ115-4PA-2A(21) listed as obsolete?

A: The original part number has been discontinued by the manufacturer. The MQ115-4PA-2A(71) represents the current active production variant within the same product series.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by series membership (MQ115), position count (4), connector type (receptacle), contact type (male pin), mounting method (through-hole), and termination type (solder). All these parameters are identical between the two parts.

Q: Is the solder termination process identical for both connectors?

A: Yes. Both connectors utilize solder termination, ensuring compatibility with existing PCB assembly processes and design layouts.