L17TF2500111 D-Sub Receptacle 25 Position Equivalent & Substitute Parts

Part Overview

The L17TF2500111 is a 25 position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This through-hole mounted, press-fit female socket connector operates across -55°C to 125°C with a 300V rating and 3A current capacity per contact. The connector features a tin-plated steel shell, gold-flashed phosphor bronze contacts, and board lock functionality. Product status is Active with RoHS compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the primary part becomes unavailable, when design requirements shift toward higher current ratings, or when alternative shell finishes and flange configurations better suit specific application needs.

Substiute Parts

L17TF2500111

Amphenol ICC (Commercial Products)In Stock: 888L17TF2500111 Datasheet

Current PartRFQ

D25S90C6GX00LF

Amphenol ICC (FCI)In Stock: 912D25S90C6GX00LF Datasheet

SimilarRFQ

D25S91C4GV00LF

Amphenol ICC (FCI)In Stock: 1600D25S91C4GV00LF Datasheet

SimilarRFQ

D25S91C4PX00LF

Amphenol ICC (FCI)In Stock: 1170D25S91C4PX00LF Datasheet

SimilarRFQ

D25S93C6PA00LF

Amphenol ICC (FCI)In Stock: 752D25S93C6PA00LF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the L17TF2500111 is determined by the following critical parameters:

Core Compatibility Requirements:

• Connector style must be D-Sub
• Connector type must be Receptacle, Female Sockets
• Position count must be 25
• Row configuration must be 2
• Shell size and layout must be 3 (DB, B)
• Mounting type must be Through Hole
• Termination method must be Press-Fit
• Voltage rating must be 300V or higher
• Operating temperature range must encompass -55°C to 125°C
• Material flammability rating must be UL94 V-0
• RoHS compliance status must be maintained

Allowable Variations:

• Current rating per contact may exceed 3A (higher ratings are acceptable)
• Shell material finish may differ (tin-plated versus tin-nickel plated)
• Contact finish thickness specifications may vary (flash versus specific micron ratings)
• Flange feature configuration may differ (Housing/Shell threaded versus unthreaded, or mating side screwlock)
• Dielectric material composition may vary (thermoplastic glass-filled versus polybutylene terephthalate)
• Color designation may differ
• Board lock feature presence may vary

All four substitute parts meet these core compatibility requirements while offering variations in current capacity, shell finish, and flange configurations.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts maintain Active product status and RoHS compliance, ensuring continued availability and regulatory alignment with the L17TF2500111.

D25S90C6GX00LF provides a direct functional upgrade with 5A per contact current capacity and tin-nickel plated shell finish. The 30.0µin contact finish thickness offers enhanced durability compared to flash plating. Housing/Shell flange configuration with 4-40 threading matches the original design approach. Board lock feature is retained.

D25S91C4GV00LF delivers 5A per contact capacity with mating side female screwlock flange configuration, providing enhanced connector retention during mating cycles. Tin-nickel plated shell and flash gold contact finish maintain compatibility. Board lock feature is included.

D25S91C4PX00LF offers 5A per contact current rating with Housing/Shell 4-40 threaded flange, directly paralleling the original mounting interface. Tin-nickel plated shell and flash contact finish are specified. Board lock feature is absent in this variant.

D25S93C6PA00LF provides 5A per contact capacity with unthreaded Housing/Shell flange configuration, suitable for applications requiring simplified mounting without threaded fasteners. Tin-nickel plated shell and 30.0µin contact finish thickness are specified. REACH Affected status applies to this part.

Selection between substitutes depends on specific flange mounting requirements, desired current capacity, and contact finish durability specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can D25S90C6GX00LF, D25S91C4GV00LF, D25S91C4PX00LF, or D25S93C6PA00LF be used as direct replacements for L17TF2500111?

A: All four parts are functionally compatible as substitutes. They maintain identical connector style, position count, row configuration, shell size, mounting type, termination method, voltage rating, and operating temperature range. The primary differences are current rating (5A versus 3A per contact), shell finish (tin-nickel versus tin-plated), flange configuration, and contact finish thickness. Selection depends on application-specific requirements for these parameters.

Q: What is the difference between Housing/Shell threaded and unthreaded flange configurations?

A: Housing/Shell threaded flanges (4-40) accept threaded fasteners for mechanical retention to the PCB or mounting surface. Housing/Shell unthreaded flanges rely on press-fit or alternative mechanical retention methods. Mating side female screwlock flanges provide connector-integrated locking during mating with compatible plugs. Selection depends on the mechanical interface design of the target application.

Q: Does the higher current rating of substitute parts affect compatibility?

A: No. A 5A per contact rating is fully compatible with applications designed for 3A per contact. The higher rating indicates increased current-carrying capacity without reducing performance at lower current levels. This represents a capability upgrade suitable for applications requiring higher current density.

Q: What is the significance of contact finish thickness differences?

A: Flash gold plating provides minimal thickness for contact protection and signal integrity. 30.0µin (0.76µm) thickness offers enhanced durability and wear resistance for high-cycle mating applications. Both finishes meet the 300V voltage requirement and maintain gold contact properties. Selection depends on expected connector mating cycles and environmental exposure.

Q: Are all substitute parts available in equivalent packaging quantities?

A: All parts are supplied in Tray packaging. Inventory levels vary: D25S90C6GX00LF (855 pcs), D25S91C4GV00LF (1492 pcs), D25S91C4PX00LF (1079 pcs), and D25S93C6PA00LF (692 pcs). The original L17TF2500111 has 827 pcs in stock. Availability should be confirmed for production requirements.

Q: What is the difference between tin-plated and tin-nickel plated shell finishes?

A: Tin plating provides basic corrosion resistance and solderability. Tin-nickel plating offers enhanced corrosion resistance and improved contact reliability in harsh environments. Both finishes are compatible with the connector's electrical specifications. Selection depends on environmental exposure and long-term reliability requirements.

Q: Does the presence or absence of board lock feature affect electrical performance?

A: Board lock features provide mechanical retention of the connector to the PCB during assembly and operation. They do not affect electrical performance, signal integrity, or current-carrying capacity. Selection depends on mechanical assembly requirements and vibration resistance specifications.

Q: Is the dielectric material difference between thermoplastic glass-filled and polybutylene terephthalate (PBT) significant?

A: Both materials meet UL94 V-0 flammability requirements and maintain the specified operating temperature range. PBT offers superior chemical resistance and dimensional stability. The material difference does not affect electrical performance or compatibility. Selection depends on environmental chemical exposure and long-term dimensional stability requirements.

Q: What does REACH Affected status mean for D25S93C6PA00LF?

A: REACH Affected status indicates the part contains substances of concern under European REACH regulations. This does not affect electrical performance or compatibility. Applications subject to REACH compliance requirements should verify regulatory alignment before selection.