TE Connectivity 5748865-3 D-Sub Plug 25 Position Equivalent & Substitute Parts

Part Overview

The TE Connectivity 5748865-3 is a 25 Position D-Sub Plug connector with right-angle solder termination, manufactured under the AMPLIMITE HD-20 series. This connector is classified as a D-shaped connector with male pins, designed for through-hole mounting applications. The part maintains Active product status with 11,308 units in current inventory stock.

D-Sub connectors of this configuration are widely used in industrial control systems, data acquisition equipment, and legacy computing interfaces. Substitute parts become necessary when original inventory is depleted, when alternative sourcing is required for supply chain optimization, or when design flexibility permits the use of functionally equivalent alternatives that meet the same electrical and mechanical specifications.

Substiute Parts

5748865-3

TE Connectivity AMP ConnectorsIn Stock: 114175748865-3 Datasheet

Current PartRFQ

621-025-260-011

Mercury United Electronics, Inc.In Stock: 1142621-025-260-011 Datasheet

SimilarRFQ

621-025-260-012

Mercury United Electronics, Inc.In Stock: 814621-025-260-012 Datasheet

SimilarRFQ

621-025-260-013

Mercury United Electronics, Inc.In Stock: 1179621-025-260-013 Datasheet

SimilarRFQ

A-DS 25 A/KG-T2S

Assmann WSW ComponentsIn Stock: 985A-DS 25 A/KG-T2S Datasheet

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A-DS 25 A/KG-T4S

Assmann WSW ComponentsIn Stock: 1866A-DS 25 A/KG-T4S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 5748865-3 is determined by strict adherence to the following core parameters:

Critical Matching Parameters:

• Connector Type: Plug, Male Pins
• Number of Positions: 25
• Number of Rows: 2
• Shell Size, Connector Layout: 3 (DB, B)
• Mounting Type: Through Hole, Right Angle
• Termination: Solder
• Backset Spacing: 0.318" (8.08mm) or 0.319" (8.10mm)
• Contact Finish: Gold
• Material Flammability Rating: UL94 V-0
• Color: Black

Acceptable Variation Parameters:

• Contact Finish Thickness: Flash or 10.0µin (0.25µm)
• Shell Material Finish: Steel Nickel Plated, Steel Tin Plated, or unspecified
• Contact Material: Brass or Copper Alloy
• Dielectric Material: Polyester Thermoplastic or Polybutylene Terephthalate (PBT), Glass Filled
• Operating Temperature Range: -55°C ~ 85°C or -55°C ~ 105°C
• Voltage Rating: 125V, 250V, or unspecified
• Current Rating: 3A per Contact or unspecified
• Flange Feature: Housing/Shell (4-40), Housing/Shell (Unthreaded), or Mating Side Female Screwlock (4-40)

All identified substitute parts meet these criteria and maintain Active product status with current inventory availability.

Parameter Comparison

Engineering Selection Recommendations

TE Connectivity 5748865-3 (Primary Part)

The TE Connectivity 5748865-3 maintains Active product status with substantial inventory availability (11,308 units). This part is RoHS Compliant and carries an operating temperature range of -55°C to 105°C with a 125V voltage rating. The contact finish thickness specification of 10.0µin (0.25µm) provides defined gold plating parameters. Selection of this part is appropriate when original manufacturer specification is required or when the extended temperature range to 105°C is necessary for the application.

Mercury 621-025-260-011, 621-025-260-012, 621-025-260-013 (Tier 1 Substitutes)

All three Mercury variants are ROHS3 Compliant with Active product status and current inventory (1,059 to 1,071 units). These parts feature steel nickel-plated shells with copper alloy contacts and polyester thermoplastic dielectric material. The operating temperature range is -55°C to 85°C, which is 20°C lower than the primary part. Mercury 621-025-260-012 and 621-025-260-013 feature housing/shell mounted 4-40 fasteners, while 621-025-260-011 uses unthreaded housing. Mercury 621-025-260-013 includes mating-side female screwlock (4-40) fastening. All three parts specify 3A per contact current rating. Selection of Mercury variants is appropriate when the reduced upper temperature limit of 85°C is acceptable for the application and when alternative shell material composition is permissible.

Assmann A-DS 25 A/KG-T4S and A-DS 25 A/KG-T2S (Tier 1 Substitutes)

Both Assmann variants are ROHS3 Compliant with Active product status and substantial inventory (923 to 1,839 units). These parts maintain the extended operating temperature range of -55°C to 105°C, matching the primary part specification. The voltage rating is 250V, exceeding the primary part's 125V specification. Assmann parts feature steel tin-plated shells with brass contacts and polybutylene terephthalate (PBT) glass-filled dielectric material. The backset spacing is 0.319" (8.10mm), representing a 0.01mm variation from the primary part. Assmann A-DS 25 A/KG-T4S features housing/shell mounted 4-40 fasteners, while A-DS 25 A/KG-T2S features mating-side female screwlock (4-40) fasteners. Both specify 3A current rating. Selection of Assmann variants is appropriate when the extended temperature range to 105°C and higher voltage rating of 250V are required, and when the minimal backset spacing variation is acceptable.

Frequently Asked Questions (FAQ)

Q: What are the critical parameters that determine if a part can substitute for the TE Connectivity 5748865-3?

A: The following parameters must match exactly: Connector Type (Plug, Male Pins), Number of Positions (25), Number of Rows (2), Shell Size/Connector Layout (3 DB, B), Mounting Type (Through Hole, Right Angle), Termination (Solder), Backset Spacing (0.318" or 0.319"), Contact Finish (Gold), Material Flammability Rating (UL94 V-0), and Color (Black).

Q: Can I use Mercury 621-025-260-011, 621-025-260-012, or 621-025-260-013 if my application operates at temperatures above 85°C?

A: No. The Mercury variants specify an operating temperature range of -55°C to 85°C, which is 20°C lower than the TE Connectivity 5748865-3 specification of -55°C to 105°C. If your application requires operation above 85°C, use the TE Connectivity 5748865-3 or the Assmann A-DS 25 A/KG-T4S or A-DS 25 A/KG-T2S variants, which both support -55°C to 105°C.

Q: What is the difference between the three Mercury part numbers?

A: All three Mercury parts (621-025-260-011, 621-025-260-012, 621-025-260-013) share identical electrical and mechanical specifications. The differences are in flange features: 621-025-260-011 uses unthreaded housing, 621-025-260-012 uses housing/shell mounted 4-40 fasteners, and 621-025-260-013 uses mating-side female screwlock (4-40) fasteners. Selection depends on the mounting configuration required by your application.

Q: How do the Assmann variants differ from each other?

A: Assmann A-DS 25 A/KG-T4S and A-DS 25 A/KG-T2S are functionally equivalent with identical electrical specifications. The difference is in flange feature: A-DS 25 A/KG-T4S uses housing/shell mounted 4-40 fasteners, while A-DS 25 A/KG-T2S uses mating-side female screwlock (4-40) fasteners. Both support the extended temperature range of -55°C to 105°C and 250V voltage rating.

Q: What is the significance of the backset spacing difference between the primary part and Assmann variants?

A: The TE Connectivity 5748865-3 specifies 0.318" (8.08mm) backset spacing, while the Assmann variants specify 0.319" (8.10mm). This represents a 0.01mm variation. This minimal difference is within typical manufacturing tolerances for D-Sub connectors and does not affect functional compatibility in standard applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. The TE Connectivity 5748865-3 is RoHS Compliant. All substitute parts (Mercury 621-025-260-011, 621-025-260-012, 621-025-260-013, and Assmann A-DS 25 A/KG-T4S and A-DS 25 A/KG-T2S) are ROHS3 Compliant, which exceeds the RoHS Compliant specification.

Q: What is the difference in shell material between the primary part and substitutes?

A: The TE Connectivity 5748865-3 does not specify shell material or finish. Mercury variants use steel with nickel plating. Assmann variants use steel with tin plating. These material compositions are functionally equivalent for D-Sub connector applications and do not affect electrical performance.

Q: Can I use a substitute part with a higher voltage rating than my application requires?

A: Yes. The TE Connectivity 5748865-3 specifies 125V. Mercury variants do not specify voltage rating. Assmann variants specify 250V. Using a connector rated for higher voltage than required does not create a compatibility issue and provides additional safety margin.

Q: What is the difference in contact material between the primary part and substitutes?

A: The TE Connectivity 5748865-3 uses brass contacts. Mercury variants use copper alloy contacts. Assmann variants use brass contacts. Both brass and copper alloy are standard contact materials for D-Sub connectors and are functionally equivalent when combined with gold plating.

Q: Are all parts available in current inventory?

A: Yes. The TE Connectivity 5748865-3 has 11,308 units in stock. Mercury 621-025-260-011 has 1,059 units, Mercury 621-025-260-012 has 763 units, Mercury 621-025-260-013 has 1,071 units, Assmann A-DS 25 A/KG-T2S has 923 units, and Assmann A-DS 25 A/KG-T4S has 1,839 units in current inventory.

Q: What packaging format is each part supplied in?

A: The TE Connectivity 5748865-3 is supplied in Tray packaging. Mercury variants (621-025-260-011, 621-025-260-012, 621-025-260-013) are supplied in Bulk packaging. Assmann variants (A-DS 25 A/KG-T4S and A-DS 25 A/KG-T2S) are supplied in Tray packaging. Packaging format does not affect connector functionality and is determined by procurement and inventory management requirements.