TE Connectivity 205857-1 D-Sub Plug 25 Position Right Angle Solder Connector

Part Overview

The TE Connectivity 205857-1 is a 25-position D-Sub plug connector with right-angle solder termination, designed for through-hole mounting applications. This connector belongs to the AMPLIMITE HDP-20 series and features a male pin configuration with a DB/B shell size (Size 3). The part is currently active in production with 762 units in stock.

Equivalent and substitute parts are necessary when the original TE Connectivity 205857-1 becomes unavailable, when alternative compliance certifications are required, or when design specifications allow for compatible connector variants from other manufacturers that meet the same electrical and mechanical requirements.

Substiute Parts

205857-1

TE Connectivity AMP ConnectorsIn Stock: 831205857-1 Datasheet

Current PartRFQ

5205857-1

TE Connectivity AMP ConnectorsIn Stock: 10965205857-1 Datasheet

DirectRFQ

183-025-113R161

NorComp Inc.In Stock: 1683183-025-113R161 Datasheet

SimilarRFQ

183-025-113R171

NorComp Inc.In Stock: 2225183-025-113R171 Datasheet

SimilarRFQ

183-025-113R181

NorComp Inc.In Stock: 1180183-025-113R181 Datasheet

SimilarRFQ

183-025-113R531

NorComp Inc.In Stock: 1471183-025-113R531 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 205857-1 is determined by the following critical parameters:

Mandatory 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
• Contact Material: Brass
• Contact Finish: Gold
• Flammability Rating: UL94 V-0
• Operating Temperature Range: -55°C to 105°C

Allowable Variation Parameters:

• Current Rating: 5A to 6A (substitutes may have lower current ratings)
• Voltage Rating: 125V or unspecified (substitutes may not specify voltage)
• Shell Material Finish: Yellow Chromate Plated Zinc or Nickel Plated (both acceptable)
• Dielectric Material: Thermoplastic or Polyamide (PA) variants
• Backset Spacing: 0.545" (13.84mm) or 0.590" (14.99mm)
• Flange Feature: Mating Side Standard Screws, Housing/Shell, or Mating Side Female Screw Lock
• RoHS Status: Non-compliant or ROHS3 Compliant
• Packaging: Bulk or Tray

Substitutes are grouped by manufacturer and specific flange feature configuration, as these variations affect mechanical installation but do not compromise electrical compatibility within the allowed parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same Manufacturer):

The 5205857-1 is the direct equivalent to the 205857-1 from TE Connectivity. Both connectors share identical electrical specifications, mounting configuration, and mechanical dimensions. The primary difference is that 5205857-1 carries ROHS3 compliance certification, whereas 205857-1 is RoHS non-compliant. Selection of 5205857-1 is appropriate for applications requiring RoHS3 compliance or when the original part becomes unavailable. Both parts are produced by TE Connectivity AMP Connectors and maintain active product status.

Cross-Manufacturer Alternatives (NorComp Inc.):

The NorComp 183 series connectors (183-025-113R161, 183-025-113R171, 183-025-113R181, 183-025-113R531) are functionally compatible substitutes. All NorComp variants carry ROHS3 compliance and are REACH unaffected. Key differences from the original 205857-1 include:

• Current rating reduced from 6A to 5A (acceptable for applications not requiring full 6A capacity)
• Backset spacing increased from 0.545" to 0.590" (affects PCB layout and mechanical fit)
• Shell finish changed from Yellow Chromate Plated Zinc to Nickel Plated (both provide corrosion protection)
• Dielectric material upgraded to Polyamide (PA9T) Nylon 9T (enhanced thermal and mechanical properties)
• Flange feature variations available (Housing/Shell unthreaded, Housing/Shell with 4-40 threads, or Mating Side Female Screw Lock)

NorComp substitutes are suitable for applications where the reduced current rating and modified backset spacing are compatible with the circuit design and PCB layout.

Compliance Considerations:

Applications subject to RoHS3 regulations should utilize 5205857-1 or any NorComp variant. Applications requiring REACH compliance should select NorComp alternatives, as 205857-1 is REACH affected and 5205857-1 has undefined REACH status.

Frequently Asked Questions (FAQ)

Q: Can the 5205857-1 be used as a direct replacement for the 205857-1?

A: Yes. The 5205857-1 is electrically and mechanically identical to the 205857-1. Both are 25-position D-Sub plugs with right-angle solder termination, 6A current rating, and identical mounting configurations. The primary distinction is RoHS3 compliance status. Selection depends on regulatory requirements for the end application.

Q: What is the significance of the backset spacing difference between TE Connectivity and NorComp connectors?

A: Backset spacing is the distance from the mounting plane to the rear of the connector body. The TE Connectivity 205857-1 and 5205857-1 have 0.545" (13.84mm) backset spacing, while NorComp 183 series connectors have 0.590" (14.99mm) spacing. This 0.045" difference affects PCB layout and mechanical clearance. Substitution requires verification that the increased backset spacing does not create interference with adjacent components or violate design constraints.

Q: Are the NorComp 183 series connectors electrically equivalent to the TE Connectivity 205857-1?

A: The NorComp connectors are functionally compatible for signal transmission. All variants maintain the same 25-position configuration, male pin type, solder termination, and operating temperature range (-55°C to 105°C). The reduced current rating (5A versus 6A) is the primary electrical difference. Applications operating below 5A current levels experience no functional limitation. Applications requiring the full 6A capacity must remain with TE Connectivity parts.

Q: What are the flange feature differences among the NorComp substitutes?

A: The NorComp 183 series offers three flange configurations: 183-025-113R161 features an unthreaded housing/shell flange; 183-025-113R171 and 183-025-113R531 feature housing/shell flanges with 4-40 threaded holes; 183-025-113R181 features a mating side female screw lock with 4-40 threads. Selection depends on the mating connector type and mechanical fastening requirements of the application.

Q: Does the change in shell finish from Yellow Chromate Plated Zinc to Nickel Plated affect performance?

A: Both finishes provide corrosion protection suitable for standard industrial environments. Yellow Chromate Plated Zinc and Nickel Plated shells are functionally equivalent for electrical and mechanical performance. Selection may depend on environmental exposure conditions or specific application requirements for corrosion resistance in harsh environments.

Q: What is the difference between the dielectric materials used in these connectors?

A: The TE Connectivity 205857-1 uses Thermoplastic dielectric material, while 5205857-1 uses Polyamide (PA) Nylon Glass Filled, and NorComp variants use Polyamide (PA9T) Nylon 9T. All materials meet UL94 V-0 flammability requirements and support the full operating temperature range (-55°C to 105°C). Polyamide variants offer enhanced thermal stability and mechanical strength compared to standard thermoplastic.

Q: Are there packaging differences between the main part and substitutes?

A: Yes. The TE Connectivity 205857-1 is supplied in Bulk packaging, while 5205857-1 is also Bulk packaged. All NorComp 183 series connectors are supplied in Tray packaging. Packaging differences do not affect connector performance but may influence inventory management and handling procedures.

Q: Which substitute should be selected for new designs?

A: For new designs requiring RoHS3 compliance, the 5205857-1 is the preferred choice as it maintains full compatibility with the original 205857-1 specification. For applications where backset spacing and current rating variations are acceptable, NorComp 183 series connectors provide ROHS3 and REACH compliance alternatives with enhanced dielectric materials.

Q: Can the 205857-1 and its substitutes be intermixed in the same assembly?

A: Intermixing is not recommended. While all parts are electrically compatible, the backset spacing difference (0.545" versus 0.590") between TE Connectivity and NorComp variants may create mechanical inconsistencies in PCB layout and mounting. Assemblies should standardize on a single connector variant to ensure consistent mechanical fit and assembly procedures.