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TE Connectivity 745783-3 D-Sub 25 Position Receptacle Equivalent & Substitute Parts
Part Overview
The TE Connectivity 745783-3 is a 25 position D-Sub receptacle connector with right-angle solder termination, part of the AMPLIMITE HD-20 series. This connector features female sockets, through-hole mounting, and is designed for signal applications with a 6A current rating and 125V voltage rating. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The connector utilizes a steel tin-plated shell with gold-flashed phosphor bronze contacts and operates across a temperature range of -55°C to 105°C.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Connector Type | D-Sub Receptacle, Female Sockets |
| Number of Positions | 25 |
| Number of Rows | 2 |
| Shell Size / Layout | 3 (DB, B) |
| Mounting Type | Through Hole, Right Angle |
| Termination | Solder |
| Current Rating | 6A |
| Voltage Rating | 125V |
| Operating Temperature | -55°C to 105°C |
| Shell Material / Finish | Steel, Tin Plated |
| Contact Material | Phosphor Bronze |
| Contact Finish | Gold, Flash |
| Backset Spacing | 0.318" (8.08mm) |
| Flange Feature | Housing/Shell (4-40) |
| Dielectric Material | Thermoplastic |
| Material Flammability Rating | UL94 V-0 |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of D-Sub 25 position receptacle connectors is determined by strict alignment of electrical and mechanical parameters. The following criteria establish compatibility:
Primary Substitution Criteria:
- Connector type: Receptacle with female sockets
- Position count: 25 positions in 2-row configuration
- Shell size and layout: 3 (DB, B)
- Mounting orientation: Right-angle through-hole
- Termination method: Solder
- Backset spacing: 0.318" (8.08mm)
- Current rating: Minimum 5A (main part rated 6A)
- Operating temperature range: Minimum -55°C to 105°C coverage
- Flange feature: Housing/Shell with 4-40 mounting
Secondary Compatibility Factors:
- Shell material finish (tin-plated or nickel-plated acceptable)
- Contact material (phosphor bronze or brass acceptable)
- Contact finish (gold acceptable)
- Dielectric material (thermoplastic or polyamide acceptable)
- Compliance certifications (RoHS status, REACH status)
Substitutes are grouped into direct equivalents (identical specifications) and similar alternatives (minor parameter variations within acceptable engineering tolerances).
Parameter Comparison
| Part Number | Manufacturer | Positions | Mounting Type | Shell Finish | Current Rating (A) | Operating Temp (°C) | Contact Material | Backset (mm) | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| 745783-3 | TE Connectivity | 25 | Through Hole, Right Angle | Tin Plated | 6 | -55 to 105 | Phosphor Bronze | 8.08 | Obsolete | Non-compliant |
| 5745783-3 | TE Connectivity | 25 | Through Hole, Right Angle | Tin Plated | 6 | -55 to 105 | Phosphor Bronze | 8.08 | Active | Compliant |
| 622-025-260-012 | Mercury United Electronics | 25 | Through Hole, Right Angle | Not Specified | Not Specified | Not Specified | Not Specified | 8.08 | Not Specified | Not Specified |
| 174-025-212R141 | NorComp Inc. | 25 | Panel Mount, Through Hole, Right Angle | Tin Plated | 5 | -50 to 100 | Brass | 9.40 | Obsolete | ROHS3 Compliant |
| 174-E25-213R001 | NorComp Inc. | 25 | Panel Mount, Through Hole, Right Angle | Nickel Plated | 5 | -50 to 100 | Brass | 9.40 | Active | ROHS3 Compliant |
| 174-E25-213R141 | NorComp Inc. | 25 | Panel Mount, Through Hole, Right Angle | Nickel Plated | 5 | -50 to 100 | Brass | 9.40 | Active | ROHS3 Compliant |
| 182-025-213R451 | NorComp Inc. | 25 | Panel Mount, Through Hole, Right Angle | Nickel Plated | 5 | -55 to 105 | Not Specified | 8.08 | Active | ROHS3 Compliant |
| 182-025-213R531 | NorComp Inc. | 25 | Panel Mount, Through Hole, Right Angle | Nickel Plated | 5 | -55 to 105 | Not Specified | 8.08 | Active | ROHS3 Compliant |
| 622-025-260-043 | Mercury United Electronics | 25 | Board Edge, Through Hole, Right Angle | Nickel Plated | 3 | -55 to 85 | Copper Alloy | 8.08 | Active | ROHS3 Compliant |
| 6E17D025SAJ120 | Amphenol ICC | 25 | Through Hole, Right Angle | Nickel Plated | 5 | -55 to 105 | Copper Alloy | 8.08 | Active | Compliant |
| D25S33E4GL00 | Amphenol ICC (FCI) | 25 | Through Hole, Right Angle | Tin Plated | 5 | -55 to 125 | Phosphor Bronze | 8.08 | Active | Non-compliant |
Engineering Selection Recommendations
Direct Equivalent (Recommended Primary Substitute):
The TE Connectivity 5745783-3 is the direct equivalent to the 745783-3. Both parts share identical electrical and mechanical specifications, including 25 positions, 6A current rating, 125V voltage rating, 0.318" backset spacing, phosphor bronze contacts with gold flash finish, and -55°C to 105°C operating temperature range. The 5745783-3 differs only in product status (active versus obsolete) and RoHS compliance (compliant versus non-compliant). This part is the preferred substitute for direct replacement applications.
Active Status Substitutes with Matching Backset Spacing (0.318" / 8.08mm):
The 182-025-213R451 and 182-025-213R531 from NorComp Inc. maintain the critical 0.318" backset spacing and -55°C to 105°C operating temperature range. Both are active products with ROHS3 compliance. The 182-025-213R531 includes board lock features. Current rating is reduced to 5A. These parts are suitable for applications where the lower current rating is acceptable.
The 6E17D025SAJ120 from Amphenol ICC provides active status and RoHS compliance with matching backset spacing and operating temperature range. Current rating is 5A. This part includes shielding features and nickel-plated steel shell.
Substitutes with Altered Backset Spacing (0.370" / 9.40mm):
The NorComp 174-E25-213R001 and 174-E25-213R141 offer active status and ROHS3 compliance but feature 0.370" backset spacing, which differs from the original 745783-3. Operating temperature range is reduced to -50°C to 100°C, and current rating is 5A. These parts require mechanical redesign to accommodate the different backset spacing.
Substitutes with Reduced Current Rating or Operating Temperature:
The 622-025-260-043 from Mercury United Electronics features 3A per contact current rating and -55°C to 85°C operating temperature, both reduced from the original specifications. This part includes board lock and mounting bracket features but is suitable only for applications with lower current and temperature requirements.
Compliance Considerations:
For applications requiring RoHS compliance, the 5745783-3, 174-E25-213R001, 174-E25-213R141, 182-025-213R451, 182-025-213R531, and 6E17D025SAJ120 are compliant options. The original 745783-3 and D25S33E4GL00 are non-compliant.
Frequently Asked Questions (FAQ)
Q: Can the 5745783-3 be used as a direct replacement for the 745783-3?
A: Yes. The 5745783-3 is electrically and mechanically identical to the 745783-3. Both are 25 position D-Sub receptacles with 6A current rating, 125V voltage rating, 0.318" backset spacing, and -55°C to 105°C operating temperature. The 5745783-3 is active and RoHS compliant, making it the preferred substitute.
Q: What is the significance of backset spacing in D-Sub connector substitution?
A: Backset spacing determines the distance from the mounting flange to the mating face of the connector. The original 745783-3 has 0.318" (8.08mm) backset spacing. Substitutes with different backset spacing (such as the NorComp 174 series at 0.370") require mechanical redesign of the mounting interface and cannot be used as direct drop-in replacements.
Q: Are there active product alternatives that maintain the same backset spacing as the 745783-3?
A: Yes. The 182-025-213R451, 182-025-213R531, and 6E17D025SAJ120 all maintain the 0.318" (8.08mm) backset spacing and are active products. However, the 182 series parts have reduced current rating (5A versus 6A) and the 6E17D025SAJ120 also has 5A current rating.
Q: What is the difference between the 182-025-213R451 and 182-025-213R531?
A: Both parts are NorComp 182 series 25 position D-Sub receptacles with identical electrical specifications. The primary difference is that the 182-025-213R531 includes board lock features, while the 182-025-213R451 does not. Both maintain 0.318" backset spacing and -55°C to 105°C operating temperature.
Q: Can the 622-025-260-043 be used in applications requiring 6A current?
A: No. The 622-025-260-043 is rated for 3A per contact, which is insufficient for applications requiring the original 6A rating. Additionally, its operating temperature range is limited to -55°C to 85°C, compared to the original -55°C to 105°C. This part is suitable only for lower current and temperature applications.
Q: What mounting type differences exist among the substitute parts?
A: The original 745783-3 specifies through-hole right-angle mounting. Most substitutes (5745783-3, 182 series, 6E17D025SAJ120, D25S33E4GL00) maintain through-hole right-angle mounting. The NorComp 174 series adds panel mount capability. The 622-025-260-043 specifies board edge mounting in addition to through-hole. Mounting type differences may require mechanical redesign.
Q: Are there RoHS compliant alternatives available?
A: Yes. The 5745783-3, 174-E25-213R001, 174-E25-213R141, 182-025-213R451, 182-025-213R531, and 6E17D025SAJ120 are all RoHS compliant. The original 745783-3 and D25S33E4GL00 are non-compliant.
Q: What is the difference between tin-plated and nickel-plated shell finishes?
A: The original 745783-3 features a tin-plated steel shell. Substitutes with nickel-plated shells (182 series, 6E17D025SAJ120) offer different corrosion resistance characteristics. The D25S33E4GL00 maintains tin-plated finish. Shell finish selection depends on environmental exposure requirements.
Q: Can the D25S33E4GL00 be used as a substitute despite being RoHS non-compliant?
A: The D25S33E4GL00 maintains many specifications of the original 745783-3, including 25 positions, 0.318" backset spacing, phosphor bronze contacts, and tin-plated shell. However, it is RoHS non-compliant and has a reduced current rating (5A versus 6A). It is suitable only for applications where RoHS compliance is not required and lower current rating is acceptable.
Q: What is the operating temperature range difference between the 745783-3 and NorComp 174 series?
A: The original 745783-3 operates from -55°C to 105°C. The NorComp 174 series (174-025-212R141, 174-E25-213R001, 174-E25-213R141) operates from -50°C to 100°C. This represents a 5°C reduction at both the lower and upper temperature limits, which may be significant for extreme environment applications.
Q: Are there packaging differences among the substitute parts?
A: Yes. The original 745783-3 packaging is not specified. The 5745783-3 is packaged in trays. The 6E17D025SAJ120 is packaged in boxes. The NorComp 174 and 182 series parts are packaged in trays. Packaging differences do not affect electrical or mechanical compatibility but may impact inventory and handling procedures.
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