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TE Connectivity 747842-2 D-Sub Connector Equivalent & Substitute Parts
Part Overview
The TE Connectivity AMP Connectors 747842-2 is a 25-position D-Sub plug connector with right-angle solder termination, designed for through-hole mounting applications. This connector features male pins, a 3-row shell layout (DB, B size), and operates across a temperature range of -55°C to 105°C with a 125V rating and 6A current capacity.
The 747842-2 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production and field service requirements. Active alternatives with identical or compatible electrical and mechanical parameters are available from multiple manufacturers.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Connector Type | D-Sub Plug, Male Pins |
| Number of Positions | 25 |
| Number of Rows | 2 |
| Shell Size / Layout | 3 (DB, B) |
| Mounting Type | Through Hole, Right Angle |
| Termination Method | Solder |
| Current Rating | 6A |
| Voltage Rating | 125V |
| Operating Temperature Range | -55°C to 105°C |
| Shell Material / Finish | Steel, Tin Plated |
| Contact Finish | Gold |
| Backset Spacing | 0.318" (8.08mm) |
| Flange Feature | Housing/Shell (Unthreaded) |
| Material Flammability Rating | UL94 V-0 |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitution of the 747842-2 is determined by strict equivalence across the following critical parameters:
Primary Substitution Criteria:
- Connector type: D-Sub plug with male pins
- Position count: 25 positions
- Row configuration: 2 rows
- Shell size: 3 (DB, B)
- Mounting orientation: Right angle, through-hole compatible
- Termination: Solder
- Backset spacing: 0.318" (8.08mm)
- Flammability rating: UL94 V-0
Secondary Compatibility Parameters:
- Current rating: 6A or higher
- Voltage rating: 125V or higher
- Operating temperature range: Must encompass -55°C to 105°C
- Contact finish: Gold or equivalent conductive finish
Substitute parts are classified into two categories:
Direct Substitutes: Parts with identical electrical and mechanical specifications, differing only in packaging or product status (obsolete vs. active).
Compatible Substitutes: Parts meeting all critical parameters with variations in shell finish, contact material composition, or flange mounting features that do not compromise functional compatibility in the intended application.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Positions | Connector Type | Mounting | Current Rating (A) | Voltage (V) | Temp Range (°C) | Shell Finish | Contact Finish | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 747842-2 | TE Connectivity | Obsolete | 25 | D-Sub Plug, Male | Through Hole, R/A | 6 | 125 | -55 to 105 | Steel, Tin | Gold | Non-compliant |
| 5747842-2 | TE Connectivity | Active | 25 | D-Sub Plug, Male | Through Hole, R/A | 6 | 125 | -55 to 105 | Steel, Tin | Gold | Compliant |
| 621-025-660-041 | Mercury United Electronics | Active | 25 | D-Sub Plug, Male | Board Edge, Through Hole, R/A | 3 per Contact | — | -55 to 85 | Steel, Nickel | Gold | ROHS3 Compliant |
| 09683635811 | HARTING | Active | 25 | D-Sub Plug, Male | Through Hole, R/A | 6.5 | — | -55 to 125 | Steel | Gold or Gold-Palladium | ROHS3 Compliant |
| 09683635812 | HARTING | Active | 25 | D-Sub Plug, Male | Through Hole, R/A | 6.5 | — | -55 to 125 | Steel | Gold or Gold-Palladium | ROHS3 Compliant |
| 09683635813 | HARTING | Active | 25 | D-Sub Plug, Male | Through Hole, R/A | 6.5 | — | -55 to 125 | Steel | Gold or Gold-Palladium | ROHS3 Compliant |
| 09683637811 | HARTING | Active | 25 | D-Sub Plug, Male | Through Hole, R/A | 6.5 | — | -55 to 125 | Steel | — | ROHS3 Compliant |
| 09683637812 | HARTING | Active | 25 | D-Sub Plug, Male | Through Hole, R/A | 6.5 | — | -55 to 125 | Steel | — | ROHS3 Compliant |
| 09683637813 | HARTING | Active | 25 | D-Sub Plug, Male | Through Hole, R/A | 6.5 | — | -55 to 125 | Steel | — | ROHS3 Compliant |
| 182-025-113R161 | NorComp Inc. | Active | 25 | D-Sub Plug, Male | Panel Mount, Through Hole, R/A | 5 | — | -55 to 105 | Steel, Nickel | Gold | ROHS3 Compliant |
| 182-025-113R171 | NorComp Inc. | Active | 25 | D-Sub Plug, Male | Panel Mount, Through Hole, R/A | 5 | — | -55 to 105 | Steel, Nickel | Gold | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Recommendation: 5747842-2
The 5747842-2 from TE Connectivity AMP Connectors is the direct equivalent to the 747842-2. This part maintains identical electrical and mechanical specifications while offering active product status and RoHS compliance. The 5747842-2 is the preferred choice for new designs and production continuity, as it eliminates supply chain risk associated with obsolete components and meets current regulatory requirements.
Secondary Recommendations: HARTING Series (09683635811, 09683635812, 09683635813, 09683637811, 09683637812, 09683637813)
The HARTING D-Sub connectors meet all critical substitution parameters with the following considerations:
- Current rating of 6.5A exceeds the 6A requirement of the 747842-2
- Operating temperature range extends to 125°C, providing additional thermal margin
- ROHS3 compliance and REACH unaffected status support regulatory requirements
- Variations in flange features (M3, 4-40, female screwlock) accommodate different mounting configurations
- Contact material composition (copper alloy) and finish (gold or gold-palladium) provide equivalent electrical performance
Tertiary Recommendations: NorComp 182 Series (182-025-113R161, 182-025-113R171)
The NorComp 182 series connectors provide functional compatibility with the following distinctions:
- Current rating of 5A is lower than the 747842-2 specification; suitable only for applications not requiring the full 6A capacity
- Operating temperature range matches the 747842-2 (-55°C to 105°C)
- ROHS3 compliance and REACH unaffected status meet regulatory standards
- Panel mount capability provides additional mounting flexibility
- Nickel-plated steel shell with gold contact finish ensures reliable performance
Alternative Consideration: Mercury United Electronics 621-025-660-041
The 621-025-660-041 offers compatibility with the following limitations:
- Current rating of 3A per contact is significantly lower than the 747842-2 specification; suitable only for low-current signal applications
- Operating temperature range of -55°C to 85°C does not fully encompass the 747842-2 specification
- Board edge mounting capability provides design flexibility
- ROHS3 compliance and REACH unaffected status meet regulatory standards
Frequently Asked Questions (FAQ)
Q: Can the 5747842-2 be used as a direct replacement for the 747842-2?
A: Yes. The 5747842-2 is electrically and mechanically identical to the 747842-2. The primary difference is product status (active vs. obsolete) and RoHS compliance. The 5747842-2 is the recommended direct substitute.
Q: What is the difference between the HARTING 09683635811, 09683635812, and 09683635813 models?
A: These three HARTING models differ in flange mounting features. The 09683635811 features an M3 housing/shell mount, the 09683635812 features a 4-40 housing/shell mount, and the 09683635813 features a mating side female screwlock (4-40) mount. All three maintain identical electrical specifications and are functionally compatible with the 747842-2 for applications not requiring specific flange configurations.
Q: Are the HARTING 09683637811, 09683637812, and 09683637813 models equivalent to the 09683635811, 09683635812, and 09683635813 models?
A: The 09683637811, 09683637812, and 09683637813 models share identical electrical and mechanical specifications with their 09683635 counterparts. The primary distinction is contact finish specification; the 09683637 series does not specify contact finish in the provided data, while the 09683635 series specifies gold or gold-palladium finish. Both series are functionally compatible with the 747842-2.
Q: Can NorComp 182-025-113R161 or 182-025-113R171 be used in applications requiring 6A current capacity?
A: No. The NorComp 182 series connectors are rated for 5A maximum current. These parts are suitable only for applications where the current requirement does not exceed 5A. For applications requiring the full 6A capacity of the 747842-2, use the 5747842-2 or HARTING alternatives rated at 6.5A.
Q: What is the difference between the NorComp 182-025-113R161 and 182-025-113R171 models?
A: Both models are functionally identical in electrical and thermal specifications. The 182-025-113R161 features an unthreaded housing/shell flange, while the 182-025-113R171 features a 4-40 threaded housing/shell flange. Selection depends on the specific mounting requirements of the application.
Q: Is the Mercury United Electronics 621-025-660-041 suitable for high-current applications?
A: No. The 621-025-660-041 is rated for 3A per contact, which is significantly lower than the 747842-2 specification of 6A. This part is suitable only for low-current signal applications. For applications requiring 6A capacity, use the 5747842-2 or HARTING alternatives.
Q: What packaging options are available for substitute parts?
A: The 5747842-2 is supplied in tray packaging. HARTING models are supplied in bulk packaging. NorComp 182 series models are supplied in tray packaging. Mercury United Electronics 621-025-660-041 is supplied in tray packaging. Packaging selection should be coordinated with procurement and inventory management requirements.
Q: Are all substitute parts RoHS compliant?
A: The 747842-2 is RoHS non-compliant. The 5747842-2 is RoHS compliant. All HARTING models (09683635811, 09683635812, 09683635813, 09683637811, 09683637812, 09683637813) are ROHS3 compliant. All NorComp 182 series models are ROHS3 compliant. The Mercury United Electronics 621-025-660-041 is ROHS3 compliant. For applications subject to RoHS requirements, select from the compliant alternatives.
Q: What is the operating temperature range for each substitute option?
A: The 747842-2 and 5747842-2 operate from -55°C to 105°C. HARTING models operate from -55°C to 125°C, providing extended thermal capability. NorComp 182 series models operate from -55°C to 105°C, matching the 747842-2 specification. Mercury United Electronics 621-025-660-041 operates from -55°C to 85°C, which does not fully encompass the 747842-2 range.
Q: Can shell finish differences affect connector performance?
A: Shell finish differences (tin-plated vs. nickel-plated steel) do not affect electrical performance in standard applications. Both finishes provide corrosion resistance and reliable grounding. Selection may be driven by specific environmental requirements, cost considerations, or design specifications. The 747842-2 uses tin-plated steel; alternatives use tin-plated or nickel-plated steel.
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