L777DFB25P1AMN

Part Overview

The L777DFB25P1AMN is a 25 Position D-Sub Plug connector manufactured by Amphenol ICC (Commercial Products). This connector features male pins, right-angle solder termination, and panel mount through-hole mounting. The product is currently active and widely available in inventory (648 units in stock).

Finding equivalent substitute parts becomes necessary when the primary part is unavailable, when alternative sourcing is required for cost optimization, or when design flexibility is needed across multiple manufacturing facilities. Substitute connectors must maintain electrical and mechanical compatibility with the original design specifications.

Substiute Parts

L777DFB25P1AMN

Amphenol ICC (Commercial Products)In Stock: 748L777DFB25P1AMN Datasheet

Current PartRFQ

DB25P564CTXLF

Amphenol ICC (FCI)In Stock: 902DB25P564CTXLF Datasheet

SimilarRFQ

DB25P564GTXLF

Amphenol ICC (FCI)In Stock: 880DB25P564GTXLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the L777DFB25P1AMN is evaluated based on strict electrical and mechanical parameter matching. All substitute parts must maintain the following critical characteristics:

Core Substitution Criteria:

• Connector Type: D-Sub Plug, Male Pins (25 positions)
• Shell Size and Layout: 3 (DB, B)
• Mounting Configuration: Right Angle, Through Hole compatible
• Termination Method: Solder
• Shell Material and Finish: Steel, Tin Plated
• Operating Temperature: -55°C ~ 125°C
• Material Flammability: UL94 V-0
• Environmental Compliance: RoHS and REACH unaffected status

The identified substitutes (DB25P564CTXLF and DB25P564GTXLF) are qualified alternatives produced by Amphenol ICC (FCI) under the Series D product line. Both parts maintain functional and electrical compatibility within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Current Rating Differential

The L777DFB25P1AMN carries a 7.5A current rating, while both substitute parts (DB25P564CTXLF and DB25P564GTXLF) carry a 5A rating. Applications requiring the full 7.5A per-contact capacity must account for this specification difference during design validation.

Voltage Rating Assessment

DB25P564GTXLF provides explicit 300V voltage rating matching the original part. DB25P564CTXLF does not specify voltage rating in the provided data. Applications with defined voltage requirements should prioritize DB25P564GTXLF.

Mechanical Compatibility

All three connectors employ the same D-Sub Shell Size 3 (DB, B) layout and right-angle through-hole mounting configuration. Minor backset spacing variations (0.406" vs. 0.409") fall within standard D-Sub connector tolerances and do not affect functional interchangeability in standard PCB designs.

Compliance Status

All three parts meet UL94 V-0 flammability standards and maintain RoHS compliance (including ROHS3 for DB25P564CTXLF). All carry MSL 1 (Unlimited) moisture sensitivity ratings suitable for unrestricted storage conditions.

Contact Finish Specification

The original part specifies standard gold plating at 30.0µin thickness. Both substitutes employ GXT™ enhanced gold plating at flash thickness, which provides superior corrosion resistance and improved contact reliability over extended shelf life and operational cycles.

Frequently Asked Questions (FAQ)

Q: Can DB25P564CTXLF and DB25P564GTXLF be used interchangeably in designs currently specifying L777DFB25P1AMN?

A: Electrical and mechanical interchangeability is maintained across all three connectors within the specified parameter envelope. Selection depends on whether your application requires the full 300V rating explicitly stated for DB25P564GTXLF and whether the 5A current rating accommodates your design requirements versus the original 7.5A specification.

Q: How do the backset spacing differences (0.406" vs. 0.409") affect PCB layout?

A: The 0.003" (0.10mm) spacing variation remains within standard D-Sub connector manufacturing tolerances and is accommodated by typical PCB footprint design margins for these connectors. No layout modification is required for standard applications.

Q: What is the difference between standard gold plating and GXT™ contact finish?

A: GXT™ represents an advanced gold plating technology providing enhanced corrosion resistance and improved wetting characteristics. Flash thickness application provides equivalent functional performance to thicker standard plating while reducing material consumption and cost.

Q: Does inventory availability differ significantly between the three parts?

A: DB25P564GTXLF offers the highest availability at 856 units, followed by DB25P564CTXLF at 793 units, with L777DFB25P1AMN at 648 units. Selection based on inventory should align with project procurement timelines.

Q: Are all three parts equally suitable for high-reliability applications?

A: All three connectors meet UL94 V-0 flammability requirements and maintain equivalent environmental compliance ratings. Applications requiring 300V rating specification should select DB25P564GTXLF. Applications with 5A current limit acceptance can utilize either substitute.

Q: What packaging format differences exist between substitutes?

A: L777DFB25P1AMN and DB25P564CTXLF are supplied in Tray packaging. DB25P564GTXLF is supplied in Bulk packaging. Packaging preference may affect handling procedures and storage considerations but does not influence electrical or mechanical function.