DF1E-4S-2.5C Equivalent & Substitute Parts

Part Overview

The DF1E-4S-2.5C is a 4-position rectangular connector receptacle housing manufactured by Hirose Electric Co Ltd. This connector operates at a 0.098" (2.50mm) pitch with crimp contact termination and latch lock fastening. The part is actively produced and ROHS3 compliant, making it suitable for applications requiring reliable in-line receptacle connections. Substitute parts are identified for inventory availability, extended operating temperature ranges, or alternative packaging configurations while maintaining core electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF1E-4S-2.5C
Manufacturer	Hirose Electric Co Ltd
Category	Rectangular Connectors
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	4
Pitch	0.098" (2.50mm)
Number of Rows	1
Mounting Type	Free Hanging (In-Line)
Contact Termination	Crimp
Fastening Type	Latch Lock
Operating Temperature	-35°C ~ 85°C
Insulation Material	Polyamide (PA), Nylon
Color	White
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the DF1E-4S-2.5C are qualified based on the following critical parameters:

Primary Compatibility Criteria:

Connector Type: Receptacle
Contact Type: Female Socket
Number of Positions: 4
Pitch: 0.098" (2.50mm)
Number of Rows: 1
Mounting Type: Free Hanging (In-Line)
Contact Termination: Crimp
Fastening Type: Latch Lock

Secondary Considerations:

RoHS3 Compliance (all substitutes meet this requirement)
MSL Rating 1 (all substitutes meet this requirement)
Product Status: Active (all substitutes are actively produced)

The substitute parts listed maintain identical electrical and mechanical interfaces. Variations in insulation material, color, operating temperature range, and packaging do not affect connector compatibility when the primary criteria are met.

Parameter Comparison

Parameter	DF1E-4S-2.5C (Hirose)	0351550400 (Molex)	0511030400 (Molex)	2078410004 (Molex)	0050579404 (Molex)
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	4	4	4	4	4
Pitch	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)	0.100" (2.54mm)
Number of Rows	1	1	1	1	1
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Contact Termination	Crimp	Crimp	Crimp	Crimp	Crimp
Fastening Type	Latch Lock	Latch Lock	Latch Lock	Latch Lock	Latch Lock
Operating Temperature	-35°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Insulation Material	Polyamide (PA), Nylon	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBTP)	Polyamide (PA66), Nylon 6/6	Polyester, Glass Filled
Color	White	Natural	White	Black	Black
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active
Packaging	Bulk	Bulk	Bulk	Bag	Bulk

Engineering Selection Recommendations

All substitute parts maintain active product status and ROHS3 compliance. Selection between the DF1E-4S-2.5C and its substitutes depends on specific application requirements:

0351550400 (Molex 35155 Series): Parametric equivalent with identical 0.098" (2.50mm) pitch. Offers extended operating temperature range (-40°C ~ 105°C) and PBT insulation material. Natural color housing.

0511030400 (Molex Mini-Lock 51103 Series): Parametric equivalent with identical 0.098" (2.50mm) pitch and white color matching the main part. Extended operating temperature range (-40°C ~ 105°C) and PBTP insulation material.

2078410004 (Molex L1NK 250 Series): Parametric equivalent with identical 0.098" (2.50mm) pitch. Extended operating temperature range (-40°C ~ 105°C) and PA66 nylon insulation. Supplied in bag packaging rather than bulk.

0050579404 (Molex SL 70066 Series): Manufacturer-recommended substitute with 0.100" (2.54mm) pitch. This represents a pitch deviation from the main part and requires mechanical compatibility verification in the target application. Extended operating temperature range (-40°C ~ 105°C) and glass-filled polyester insulation.

Frequently Asked Questions (FAQ)

Q: Can 0050579404 be used as a direct replacement for DF1E-4S-2.5C?

A: 0050579404 differs in pitch specification (0.100" vs 0.098"). While both are 4-position receptacles with identical contact type and termination, the pitch difference affects mechanical fit with mating connectors and PCB layouts. This substitute is classified as manufacturer-recommended but requires application-specific compatibility assessment.

Q: What is the difference between parametric equivalents and manufacturer-recommended substitutes?

A: Parametric equivalents (0351550400, 0511030400, 2078410004) maintain identical pitch and all primary compatibility criteria. The manufacturer-recommended substitute (0050579404) introduces a pitch variation. Both categories preserve electrical and mechanical interface compatibility within their respective classifications.

Q: Do insulation material differences affect connector performance?

A: Insulation material variations (Polyamide, PBT, PBTP, glass-filled polyester) do not affect electrical interface compatibility. Material selection impacts thermal performance, chemical resistance, and mechanical durability. All listed materials are ROHS3 compliant and rated MSL 1.

Q: Why do substitute parts have higher operating temperature ranges?

A: The DF1E-4S-2.5C operates -35°C ~ 85°C, while Molex substitutes operate -40°C ~ 105°C. Extended ranges reflect different material formulations and design specifications. The main part's narrower range is sufficient for applications within those limits.

Q: Does packaging format (Bulk vs Bag) affect connector compatibility?

A: Packaging format does not affect electrical or mechanical compatibility. 2078410004 is supplied in bag packaging while others are bulk. Packaging selection depends on inventory management and procurement requirements.

Q: Are all substitute parts actively produced?

A: All listed substitute parts maintain active product status with current inventory availability, ensuring supply chain continuity and long-term component availability.

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