DF3-7S-2R28(05) Equivalent & Substitute Parts

Part Overview

The DF3-7S-2R28(05) is a 7-position rectangular receptacle connector manufactured by Hirose Electric Co Ltd, designed for IDC (Insulation Displacement Contact) termination with 28 AWG discrete wire. This connector features tin contact finish, closed-end housing, and is classified as obsolete. Due to its obsolete status, identifying compatible substitute parts is essential for ongoing system maintenance, repair, and component sourcing.

Substiute Parts

DF3-7S-2R28(05)

Hirose Electric Co LtdIn Stock: 738DF3-7S-2R28(05) Datasheet

Current PartRFQ

DF3-7S-2C

Hirose Electric Co LtdIn Stock: 1419DF3-7S-2C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DF3-7S-2R28(05) is determined by the following critical parameters:

• Series Compatibility: Both parts must belong to the DF3 series
• Connector Configuration: Receptacle type with 7 positions
• Pitch Specification: 0.079" (2.00mm) pitch for mechanical alignment
• Contact Type: Female socket contacts
• Mounting Style: Free hanging (in-line) orientation
• Electrical Compliance: RoHS compliance status

The substitute part DF3-7S-2C shares all critical mechanical and electrical parameters with the main part. However, the termination method differs: the main part uses IDC termination, while the substitute uses crimp termination. This distinction affects the assembly process and wire preparation requirements.

Parameter Comparison

Engineering Selection Recommendations

The DF3-7S-2C is the manufacturer-recommended substitute for the obsolete DF3-7S-2R28(05). Both connectors maintain identical mechanical compatibility through matching series designation, position count, and 2.00mm pitch specification. The substitute part carries active product status and meets ROHS3 compliance, providing improved regulatory alignment compared to the original RoHS Compliant designation.

The primary technical distinction is the termination method: IDC versus crimp. This change requires different assembly tooling and wire preparation procedures. The DF3-7S-2C housing is supplied without contacts included, necessitating separate procurement of compatible crimp contacts for the 7-position configuration.

Frequently Asked Questions (FAQ)

Q: Can DF3-7S-2C directly replace DF3-7S-2R28(05) in existing assemblies?

A: Mechanical and electrical compatibility is confirmed through matching pitch, position count, and connector type. However, the termination method change from IDC to crimp requires process modification and different tooling. Wire preparation and assembly procedures must be updated accordingly.

Q: What is the significance of the termination method difference?

A: IDC termination pierces insulation without stripping wire, while crimp termination requires pre-stripped wire and dedicated crimping equipment. These are distinct assembly processes with different labor and tooling requirements.

Q: Are contacts included with the DF3-7S-2C?

A: No. The DF3-7S-2C is supplied as a housing only. Compatible crimp contacts must be sourced separately for the 7-position configuration.

Q: Does the substitute part meet current regulatory requirements?

A: Yes. The DF3-7S-2C carries ROHS3 compliance status, meeting current regulatory standards. The original part is RoHS Compliant, which is also acceptable but represents an earlier compliance designation.

Q: Are there any differences in operating temperature or environmental specifications?

A: The DF3-7S-2C specifies an operating temperature range of -55°C to 105°C. Both parts share MSL 1 (Unlimited) moisture sensitivity classification.