D25P91C4PL00LF Equivalent & Substitute Parts

Part Overview

The D25P91C4PL00LF is a 25-position D-Sub plug connector manufactured by Amphenol ICC (FCI) in the Delta D series. This through-hole mounted, press-fit connector features male pins with a vertical orientation and is designed for signal applications requiring robust electrical connectivity. The part is currently active in production with 1,080 units in stock. Substitute parts are necessary when specific mounting requirements, flange configurations, or supply chain considerations necessitate alternative connector options that maintain electrical and mechanical compatibility.

Substiute Parts

D25P91C4PL00LF

Amphenol ICC (FCI)In Stock: 1135D25P91C4PL00LF Datasheet

Current PartRFQ

191-025-123R001

NorComp Inc.In Stock: 915191-025-123R001 Datasheet

MFR RecommendedRFQ

5748146-4

TE Connectivity AMP ConnectorsIn Stock: 8705748146-4 Datasheet

MFR RecommendedRFQ

5748146-6

TE Connectivity AMP ConnectorsIn Stock: 10125748146-6 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the D25P91C4PL00LF is determined by the following critical parameters:

Core Compatibility Requirements:

• Connector type: D-Sub plug with male pins
• Position count: 25 positions
• Shell size: 3 (DB, B)
• Termination method: Press-fit
• Number of rows: 2

Acceptable Variations:

• Mounting type: Through-hole or panel-mount configurations
• Flange feature: Different housing/shell attachment methods (M3 threads, unthreaded, 4-40 screwlock)
• Shell material finish: Steel with nickel, tin-nickel, or tin plating
• Contact material: Phosphor bronze or copper alloy
• Operating temperature range: Minimum -55°C, maximum 105°C or higher
• Dielectric material: PBT or polyester thermoplastic
• RoHS compliance: RoHS Compliant or ROHS3 Compliant

Non-Substitutable Parameters:

• Connector style, type, and pin configuration
• Position count and shell size
• Press-fit termination requirement

Parameter Comparison

Engineering Selection Recommendations

191-025-123R001 (NorComp Inc.): This substitute is suitable for applications requiring panel-mount configuration instead of through-hole mounting. It maintains identical position count, shell size, and press-fit termination. Operating temperature range matches the main part at -55°C to 125°C. ROHS3 compliance exceeds RoHS requirements. The unthreaded flange differs from the M3 threaded design of the main part, requiring mechanical redesign of the mounting interface.

5748146-4 (TE Connectivity AMP Connectors): This substitute maintains through-hole mounting compatibility with the main part. It shares identical shell size, position count, and press-fit termination. The 4-40 threaded flange differs from the M3 design. Operating temperature range is reduced to -55°C to 105°C, which is acceptable for most applications but represents a 20°C reduction at the upper limit. RoHS compliance is maintained. Packaging is bulk rather than tray.

5748146-6 (TE Connectivity AMP Connectors): This substitute is functionally equivalent to 5748146-4 with the addition of a mating-side female screwlock feature. Through-hole mounting, shell size, position count, and press-fit termination are maintained. The same 4-40 threaded flange and reduced operating temperature range (-55°C to 105°C) apply. ROHS3 compliance is provided. The screwlock feature adds mechanical retention capability not present in the main part.

Frequently Asked Questions (FAQ)

Q: Can 191-025-123R001 be used as a direct replacement for D25P91C4PL00LF?

A: 191-025-123R001 is electrically and mechanically compatible but requires PCB redesign. The main difference is mounting type: 191-025-123R001 is panel-mount while D25P91C4PL00LF is through-hole. The unthreaded flange of 191-025-123R001 differs from the M3-threaded flange of the main part, necessitating different mechanical fastening approaches.

Q: What is the impact of the reduced operating temperature range in the TE Connectivity substitutes?

A: Both 5748146-4 and 5748146-6 operate to 105°C maximum, compared to 125°C for the main part. This 20°C reduction is acceptable for most industrial and commercial applications. Applications requiring sustained operation above 105°C must use the main part or 191-025-123R001.

Q: Are the TE Connectivity parts 5748146-4 and 5748146-6 interchangeable?

A: Both parts share identical electrical specifications, shell size, position count, and mounting type. The primary difference is that 5748146-6 includes a mating-side female screwlock feature for enhanced mechanical retention. Selection depends on whether the screwlock feature is required for the application.

Q: What packaging differences exist among these parts?

A: D25P91C4PL00LF and 191-025-123R001 are supplied in trays. Both TE Connectivity parts (5748146-4 and 5748146-6) are supplied in bulk packaging. Bulk packaging may require additional handling and organization for production environments accustomed to tray packaging.

Q: Do all substitute parts meet the same compliance standards?

A: All parts are UL94 V-0 rated and RoHS or ROHS3 compliant. D25P91C4PL00LF and 5748146-4 are RoHS Compliant. 191-025-123R001 and 5748146-6 are ROHS3 Compliant, which represents an enhanced compliance level. All parts are EAR99 classified and REACH unaffected or vendor-undefined, suitable for unrestricted distribution.