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NorComp 683-025-113R171 D-Sub Plug 25 Position Equivalent & Substitute Parts
Part Overview
The NorComp 683-025-113R171 is a 25-position D-Sub plug connector with right-angle solder termination, designed for panel mount and through-hole applications. This connector features a male pin configuration with nickel-plated steel shell and gold-flashed contacts, rated for 5A continuous current and operating temperatures from -55°C to 105°C.
The 683-025-113R171 is classified as obsolete. Equivalent and substitute parts are available from active product lines that maintain the same core electrical and mechanical specifications, enabling direct replacement in existing designs without circuit modification.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Connector Type | D-Sub Plug, Male Pins |
| Number of Positions | 25 |
| Shell Size | 3 (DB, B) |
| Mounting Type | Panel Mount, Through Hole, Right Angle |
| Termination | Solder |
| Shell Material & Finish | Steel, Nickel Plated |
| Contact Finish | Gold, Flash |
| Current Rating | 5A |
| Backset Spacing | 0.590" (14.99mm) |
| Operating Temperature | -55°C to 105°C |
| Flange Feature | Housing/Shell (4-40) |
| Material Flammability | UL94 V-0 |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the 683-025-113R171 is determined by the following critical parameters:
Primary Matching Criteria:
- 25-position D-Sub plug connector with male pins
- Shell size 3 (DB, B) configuration
- Right-angle solder termination
- Backset spacing of 0.590" (14.99mm)
- Housing/Shell (4-40) flange feature
- Operating temperature range -55°C to 105°C
- UL94 V-0 flammability rating
Secondary Compatibility Factors:
- Current rating of 5A or higher
- Gold contact finish
- Nickel or tin-plated steel shell
- ROHS3 or RoHS compliant status
Substitute parts are grouped into two categories based on these parameters:
Category A - Direct Equivalents (Identical Backset Spacing 0.590"): Parts maintaining the exact 0.590" (14.99mm) backset spacing with matching flange configuration and current rating specifications.
Category B - Compatible Alternatives (Different Backset Spacing): Parts with alternative backset spacing that maintain all other critical parameters but require mechanical layout verification.
Parameter Comparison
| Part Number | Manufacturer | Positions | Shell Size | Backset Spacing | Current Rating | Shell Finish | Contact Finish | Flange Feature | Operating Temp | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 683-025-113R171 | NorComp Inc. | 25 | 3 (DB, B) | 0.590" (14.99mm) | 5A | Steel, Nickel | Gold, Flash | Housing/Shell (4-40) | -55°C to 105°C | Obsolete | ROHS3 |
| 5747834-4 | TE Connectivity | 25 | 3 (DB, B) | 0.590" (14.99mm) | 6A | Steel, Tin | Gold | Housing/Shell (4-40) | -55°C to 105°C | Active | ROHS3 |
| 5747834-6 | TE Connectivity | 25 | 3 (DB, B) | 0.590" (14.99mm) | 6A | Steel, Tin | Gold | Mating Side, Female Screwlock (4-40) | -55°C to 105°C | Active | RoHS |
| 5745994-4 | TE Connectivity | 25 | 3 (DB, B) | 0.590" (14.99mm) | 6A | Steel, Tin | Gold, Flash | Housing/Shell (4-40) | -55°C to 105°C | Active | RoHS |
| 625-025-262-042 | Mercury United Electronics | 25 | 3 (DB, B) | 0.584" (14.84mm) | 3A per Contact | Steel, Nickel | Gold, Flash | Housing/Shell (4-40) | -55°C to 85°C | Active | ROHS3 |
| 625-025-662-042 | Mercury United Electronics | 25 | 3 (DB, B) | 0.584" (14.84mm) | 3A per Contact | Steel, Nickel | Gold, 30.0µin | Housing/Shell (4-40) | -55°C to 85°C | Active | ROHS3 |
| 747834-6 | TE Connectivity | 25 | 3 (DB, B) | 0.590" (14.99mm) | 6A | Steel, Tin | Gold | Mating Side, Female Screwlock (4-40) | -55°C to 105°C | Active | RoHS non-compliant |
| FCE17B25PC200 | Amphenol ICC | 25 | 3 (DB, B) | 0.590" (14.99mm) | 5A | Steel, Tin | Gold, 15.0µin | Housing/Shell (Unthreaded) | -40°C to 85°C | Active | RoHS |
| 182-025-113R531 | NorComp Inc. | 25 | 3 (DB, B) | 0.318" (8.08mm) | 5A | Steel, Nickel | Gold, Flash | Housing/Shell (4-40) | -55°C to 105°C | Active | ROHS3 |
| 5745436-3 | TE Connectivity | 25 | 3 (DB, B) | 0.454" (11.53mm) | 6A | Steel, Tin | Gold | Mating Side, Standard Screws | -55°C to 105°C | Active | ROHS3 |
Engineering Selection Recommendations
Recommended Primary Substitutes (Identical Backset Spacing):
The TE Connectivity 5747834-4 and 5745994-4 connectors are the preferred direct replacements for the 683-025-113R171. Both maintain the critical 0.590" (14.99mm) backset spacing and Housing/Shell (4-40) flange configuration. The 5747834-4 is ROHS3 compliant and rated for 6A, providing enhanced current capacity. The 5745994-4 offers identical specifications with RoHS compliance and flash gold contact finish matching the original part.
Secondary Substitutes (Mechanical Layout Verification Required):
The Mercury United Electronics 625-025-262-042 and 625-025-662-042 maintain nickel-plated steel shells and ROHS3 compliance but feature a 0.584" (14.84mm) backset spacing. These parts are suitable only when mechanical layout accommodates the 0.15mm spacing variance. Both are rated for 3A per contact, which is lower than the original 5A specification.
The Amphenol ICC FCE17B25PC200 maintains the 0.590" (14.99mm) backset spacing and 5A current rating but features an unthreaded housing flange and operates to 85°C maximum, limiting use in applications requiring the full -55°C to 105°C temperature range.
Not Recommended:
The TE Connectivity 747834-6 is RoHS non-compliant and should not be selected for new designs or applications requiring regulatory compliance documentation.
The NorComp 182-025-113R531 and TE Connectivity 5745436-3 feature non-standard backset spacing (0.318" and 0.454" respectively) and require complete mechanical redesign for panel mounting.
Frequently Asked Questions (FAQ)
Q: Can the 5747834-6 be used as a direct replacement for the 683-025-113R171?
A: The 5747834-6 maintains identical backset spacing (0.590"), current rating (6A), and operating temperature range (-55°C to 105°C). However, it features a Mating Side Female Screwlock flange instead of the Housing/Shell (4-40) configuration. This difference affects mating interface design and requires verification that the mating connector accommodates the screwlock feature. The part is RoHS compliant.
Q: What is the significance of backset spacing in D-Sub connector substitution?
A: Backset spacing defines the distance from the connector mounting face to the rear of the shell. The 683-025-113R171 specifies 0.590" (14.99mm). Substitutes with identical spacing mount directly into existing panel cutouts and bracket assemblies without modification. Parts with different spacing (such as the 182-025-113R531 at 0.318") require mechanical redesign and are not direct replacements.
Q: Why do some substitutes have higher current ratings than the original part?
A: The TE Connectivity AMPLIMITE HD-20 series (5747834-4, 5747834-6, 5745994-4) are rated for 6A versus the original 5A specification. Higher current ratings indicate enhanced contact design and material composition. These parts are fully backward compatible for applications requiring 5A or less and provide additional capacity margin for future design iterations.
Q: Are Mercury United Electronics 625 series connectors suitable replacements?
A: The 625-025-262-042 and 625-025-662-042 maintain ROHS3 compliance and nickel-plated steel shells matching the original part. However, they feature 0.584" (14.84mm) backset spacing versus the required 0.590", creating a 0.15mm variance. Additionally, the 3A per contact rating is lower than the original 5A specification. These parts are suitable only when mechanical layout tolerances accommodate the spacing variance and current requirements do not exceed 3A per contact.
Q: What is the difference between flash gold and standard gold contact finishes?
A: Flash gold is a thin electroplated layer (typically 0.1-0.5µm) applied over a base metal. Standard gold finish may be thicker or applied differently. Both provide equivalent electrical performance and corrosion resistance for signal-level applications. The 683-025-113R171 specifies flash gold; substitutes with standard gold finish (such as 5747834-6) are electrically equivalent.
Q: Can the Amphenol ICC FCE17B25PC200 be used in applications requiring -55°C operation?
A: No. The FCE17B25PC200 operates from -40°C to 85°C, which does not meet the original specification of -55°C to 105°C. This part is suitable only for applications with operating temperature requirements within the -40°C to 85°C range.
Q: What does ROHS3 compliance mean for connector selection?
A: ROHS3 (Restriction of Hazardous Substances Directive 3) compliance certifies that the connector meets European Union restrictions on lead, cadmium, mercury, and other hazardous substances. The 683-025-113R171 is ROHS3 compliant. Substitutes with ROHS3 or RoHS compliance maintain regulatory alignment for applications subject to these requirements. The 747834-6 is RoHS non-compliant and should not be used in regulated applications.
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