L777DFB25PC D-Sub Plug Connector Equivalent & Substitute Parts

Part Overview

The L777DFB25PC is a 25-position D-Sub plug connector manufactured by Amphenol ICC (Commercial Products). This connector features male pins, right-angle mounting, and solder termination, designed for panel mount and through-hole applications. The part is currently active in production with 1146 units in stock. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit component flexibility within specified electrical and mechanical parameters.

Substiute Parts

L777DFB25PC

Amphenol ICC (Commercial Products)In Stock: 1167L777DFB25PC Datasheet

Current PartRFQ

173-E25-113R001

NorComp Inc.In Stock: 1898173-E25-113R001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the L777DFB25PC is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Connector Style: D-Sub
• Connector Type: Plug, Male Pins
• Number of Positions: 25
• Number of Rows: 2
• Shell Size, Connector Layout: 3 (DB, B)
• Mounting Type: Panel Mount, Through Hole, Right Angle
• Termination: Solder
• Contact Type: Signal
• Flange Feature: Housing/Shell (Unthreaded)
• Contact Form: Machined
• Material Flammability Rating: UL94 V-0

The substitute part 173-E25-113R001 manufactured by NorComp Inc. meets all mandatory matching parameters, establishing it as a valid equivalent for the L777DFB25PC within the scope of connector form, fit, and function.

Parameter Comparison

Engineering Selection Recommendations

Both the L777DFB25PC and 173-E25-113R001 are active production parts with equivalent form, fit, and function characteristics. Selection between these parts is based on the following engineering considerations:

L777DFB25PC (Amphenol ICC):

• Current Rating: 7.5A
• Operating Temperature Range: -55°C to 155°C
• Backset Spacing: 0.319" (8.10mm)
• Shell Material Finish: Steel, Tin Plated
• Contact Finish Thickness: 30.0µin (0.76µm)
• Voltage Rating: 300V
• RoHS Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• Inventory: 1146 units

173-E25-113R001 (NorComp Inc.):

• Current Rating: 5A
• Operating Temperature Range: -50°C to 100°C
• Backset Spacing: 0.283" (7.20mm)
• Shell Material Finish: Steel, Nickel Plated
• Contact Finish Thickness: Flash
• Voltage Rating: Not specified
• ROHS3 Compliant
• Moisture Sensitivity Level: Not Applicable
• Inventory: 1812 units

Selection of the appropriate substitute part depends on application-specific requirements for current capacity, operating temperature range, backset spacing, and voltage rating. The L777DFB25PC provides higher current capacity (7.5A versus 5A) and extended operating temperature range (-55°C to 155°C versus -50°C to 100°C). The 173-E25-113R001 offers greater inventory availability and ROHS3 compliance status.

Frequently Asked Questions (FAQ)

Q: Can the 173-E25-113R001 be used as a direct replacement for the L777DFB25PC?

A: The 173-E25-113R001 is mechanically and functionally equivalent to the L777DFB25PC for connector form, fit, and function. However, application-specific electrical parameters must be evaluated. The L777DFB25PC supports 7.5A current rating and 300V voltage rating, while the 173-E25-113R001 supports 5A current rating with unspecified voltage rating. Substitution is valid only when application requirements do not exceed the 173-E25-113R001 electrical specifications.

Q: What are the differences in backset spacing between these parts?

A: The L777DFB25PC has a backset spacing of 0.319" (8.10mm), while the 173-E25-113R001 has a backset spacing of 0.283" (7.20mm). Backset spacing affects the depth of connector insertion into the panel. Design layouts and mechanical clearances must accommodate the specific backset spacing of the selected part.

Q: Are both parts RoHS compliant?

A: Yes. The L777DFB25PC is RoHS Compliant. The 173-E25-113R001 is ROHS3 Compliant. Both parts meet RoHS requirements for restricted substance elimination.

Q: What is the difference in shell material finish?

A: The L777DFB25PC features a steel shell with tin plating. The 173-E25-113R001 features a steel shell with nickel plating. Shell material finish affects corrosion resistance and environmental durability characteristics.

Q: How do the operating temperature ranges compare?

A: The L777DFB25PC operates from -55°C to 155°C, providing a wider temperature range. The 173-E25-113R001 operates from -50°C to 100°C. Applications requiring operation at temperatures below -50°C or above 100°C require the L777DFB25PC.

Q: What is the contact finish thickness difference?

A: The L777DFB25PC specifies a contact finish thickness of 30.0µin (0.76µm). The 173-E25-113R001 specifies a flash contact finish thickness. Flash finish provides minimal plating thickness for cost optimization, while the specified thickness on the L777DFB25PC provides enhanced contact durability and wear resistance.

Q: Are both parts available in the same packaging?

A: Yes. Both the L777DFB25PC and 173-E25-113R001 are supplied in tray packaging.

Q: What is the moisture sensitivity level difference?

A: The L777DFB25PC has a Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no moisture sensitivity restrictions. The 173-E25-113R001 has a Moisture Sensitivity Level listed as Not Applicable, indicating the part does not require moisture sensitivity classification.