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TE Connectivity 745392-2 D-Sub 25 Position Receptacle Equivalent & Substitute Parts
Part Overview
The TE Connectivity AMP Connectors 745392-2 is a 25 Position D-Sub Receptacle connector with female sockets, right-angle through-hole solder termination, and gold-plated contacts. This connector belongs to the AMPLIMITE HD-20 series and is classified as obsolete. The part operates across a temperature range of -55°C to 105°C with a 6A current rating and 125V voltage rating.
Due to the obsolete product status of 745392-2, equivalent and substitute parts are necessary for ongoing system maintenance, repair, and new design implementations. Substitute connectors must maintain electrical and mechanical compatibility while meeting current manufacturing and compliance standards.
Substiute Parts
Key Parameters
| Parameter | 745392-2 Specification |
|---|---|
| Connector Type | D-Sub Receptacle, Female Sockets |
| Number of Positions | 25 |
| Shell Size / Layout | 3 (DB, B) |
| Mounting Type | Through Hole, Right Angle |
| Termination Method | Solder |
| Contact Finish | Gold, 30.0µin (0.76µm) |
| Current Rating | 6A |
| Voltage Rating | 125V |
| Operating Temperature Range | -55°C to 105°C |
| Flammability Rating | UL94 V-0 |
| RoHS Status | RoHS Non-Compliant |
| Backset Spacing | 0.318" (8.08mm) |
Substitute Part Grouping Explanation
Substitution logic for the 745392-2 connector is based on the following critical parameters that determine functional and mechanical compatibility:
Primary Compatibility Criteria:
- Connector Type: D-Sub Receptacle, Female Sockets (mandatory match)
- Number of Positions: 25 (mandatory match)
- Shell Size / Layout: 3 (DB, B) (mandatory match)
- Mounting Type: Through Hole, Right Angle (mandatory match)
- Termination Method: Solder (mandatory match)
- Number of Rows: 2 (mandatory match)
Secondary Compatibility Criteria:
- Contact Finish: Gold plating (preferred for signal integrity)
- Flammability Rating: UL94 V-0 (safety compliance)
- Operating Temperature Range: Must encompass or exceed -55°C to 105°C
- Current Rating: Must meet or exceed 6A
- Voltage Rating: Must meet or exceed 125V
Substitute parts are grouped into two categories: Direct Manufacturer Substitutes (TE Connectivity) and Cross-Manufacturer Equivalents (NorComp Inc., Amphenol ICC). All listed substitutes maintain the core D-Sub 25-position receptacle configuration with right-angle through-hole solder termination. Variations in backset spacing, contact material composition, and flange features are noted as secondary design considerations that may affect mechanical fit in specific applications.
Parameter Comparison
| Part Number | Manufacturer | Connector Type | Positions | Shell Size | Mounting | Termination | Contact Finish | Current (A) | Voltage (V) | Temp Range (°C) | RoHS Status | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 745392-2 | TE Connectivity | Receptacle, Female | 25 | 3 (DB, B) | Through Hole, R/A | Solder | Gold 30.0µin | 6 | 125 | -55 to 105 | Non-Compliant | Obsolete |
| 5745392-2 | TE Connectivity | Receptacle, Female | 25 | 3 (DB, B) | Through Hole, R/A | Solder | Gold 30.0µin | 6 | 125 | -55 to 105 | Compliant | Active |
| 174-025-212R141 | NorComp Inc. | Receptacle, Female | 25 | 3 (DB, B) | Panel Mount, Through Hole, R/A | Solder | Gold Flash | 5 | — | -50 to 100 | Compliant | Obsolete |
| DB25S565CTLF | Amphenol ICC (FCI) | Receptacle, Female | 25 | 3 (DB, B) | Through Hole, R/A | Solder | Gold or Gold GXT™ | 5 | — | -55 to 125 | Compliant | Active |
| DBPV25S565GTLF | Amphenol ICC (FCI) | Receptacle, Female | 25 | 3 (DB, B) | Through Hole, R/A | Solder | Gold GXT™ 30.0µin | 7.5 | 1000 | -55 to 125 | Compliant | Active |
| L177DBF25SC | Amphenol ICC (Commercial) | Receptacle, Female | 25 | 3 (DB, B) | Through Hole, R/A | Solder | Gold 20.0µin | 7.5 | 300 | -55 to 125 | Compliant | Active |
| L177DFB25S1AON | Amphenol ICC (Commercial) | Receptacle, Female | 25 | 3 (DB, B) | Panel Mount, Through Hole, R/A | Solder | Gold 30.0µin | 7.5 | 300 | -55 to 125 | Compliant | Active |
| L177DFB25SAZ4RM6 | Amphenol ICC (Commercial) | Receptacle, Female | 25 | 3 (DB, B) | Panel Mount, Through Hole, R/A | Solder | Gold 30.0µin | 7.5 | 300 | -55 to 125 | Compliant | Active |
| L177DFBF25SA4 | Amphenol ICC (Commercial) | Receptacle, Female | 25 | 3 (DB, B) | Panel Mount, Through Hole, R/A | Solder | Gold 30.0µin | 7.5 | 300 | -55 to 125 | Compliant | Active |
| L177DFBF25SC | Amphenol ICC (Commercial) | Receptacle, Female | 25 | 3 (DB, B) | Panel Mount, Through Hole, R/A | Solder | Gold 30.0µin | 7.5 | 300 | -55 to 125 | Compliant | Active |
| L177DFBH25SAM4 | Amphenol ICC (Commercial) | Receptacle, Female | 25 | 3 (DB, B) | Panel Mount, Through Hole, R/A | Solder | Gold 30.0µin | 7.5 | 300 | -55 to 125 | Compliant | Active |
Engineering Selection Recommendations
Direct Manufacturer Substitute (Recommended Primary Choice):
The 5745392-2 from TE Connectivity AMP Connectors is the direct equivalent to the obsolete 745392-2. This part maintains identical electrical and mechanical specifications while achieving RoHS Compliance status. The 5745392-2 is classified as Active product status, ensuring long-term availability and supply chain stability. This connector is supplied in Bulk packaging and contains 996 units in current inventory. Selection of the 5745392-2 eliminates design re-qualification requirements and provides the highest level of form-fit-function compatibility.
Cross-Manufacturer Active Alternatives:
When TE Connectivity 5745392-2 availability is constrained, the following active cross-manufacturer alternatives provide functional substitution:
Amphenol ICC (FCI) Series - DB25S565CTLF and DBPV25S565GTLF: Both connectors maintain the 25-position D-Sub receptacle configuration with through-hole right-angle solder termination. The DB25S565CTLF operates at 5A current rating with extended temperature range (-55°C to 125°C). The DBPV25S565GTLF provides enhanced specifications with 7.5A per contact current rating, 1000V voltage rating, and Board Lock feature. Both are RoHS Compliant and Active status.
Amphenol ICC (Commercial Products) Series - L177 Family: The L177DBF25SC, L177DFB25S1AON, L177DFB25SAZ4RM6, L177DFBF25SA4, L177DFBF25SC, and L177DFBH25SAM4 connectors provide active alternatives with enhanced electrical performance. These parts feature 7.5A current ratings, 300V voltage ratings, and extended temperature operation (-55°C to 125°C). All are RoHS Compliant with Active product status. Variants include panel mount capability, board lock features, and mounting bracket options. Backset spacing variations (0.319" to 0.406") require mechanical fit verification in existing designs.
NorComp Inc. 174-025-212R141: This connector provides cross-manufacturer compatibility with 25-position D-Sub receptacle configuration. Operating specifications include 5A current rating and -50°C to 100°C temperature range. The part is RoHS Compliant but classified as Obsolete, limiting long-term supply assurance.
Compliance Considerations:
The original 745392-2 is RoHS Non-Compliant. All recommended substitutes (5745392-2, DB25S565CTLF, DBPV25S565GTLF, and L177 series) are RoHS Compliant, meeting current regulatory requirements for new designs and system upgrades. All substitute parts maintain UL94 V-0 flammability rating and EAR99 ECCN classification consistent with the original part.
Frequently Asked Questions (FAQ)
Q: Can the 5745392-2 be used as a direct replacement for the obsolete 745392-2?
A: Yes. The 5745392-2 is the direct equivalent with identical connector type, position count, shell size, mounting configuration, and termination method. The primary difference is RoHS Compliance status and Active product availability. No design modifications are required for substitution.
Q: What is the significance of backset spacing differences among substitute parts?
A: Backset spacing defines the distance from the connector mounting face to the contact insertion point. The 745392-2 specifies 0.318" (8.08mm). Substitute parts vary between 0.319" (8.10mm) and 0.409" (10.40mm). Variations within 0.001" tolerance are generally compatible with standard D-Sub receptacle plugs. Larger variations (0.409") may require mechanical fit verification in space-constrained applications. Consult mechanical drawings and test fit procedures for critical applications.
Q: Are the Amphenol ICC L177 series connectors compatible with existing 745392-2 installations?
A: The L177 series maintains core D-Sub 25-position receptacle compatibility with through-hole right-angle solder termination. However, several L177 variants include panel mount capability and board lock features not present in the 745392-2. Backset spacing variations and flange feature differences require mechanical fit assessment. Electrical performance is enhanced (7.5A vs. 6A current rating, 300V vs. 125V voltage rating). These parts are suitable for new designs and upgrades where mechanical envelope permits.
Q: What is the difference between gold contact finish specifications (30.0µin vs. 20.0µin)?
A: Contact finish thickness is specified in microinches (µin). The 745392-2 specifies 30.0µin (0.76µm) gold plating. The L177DBF25SC specifies 20.0µin (0.51µm). Both thicknesses provide adequate corrosion protection and electrical conductivity for signal-level applications. The 30.0µin specification provides additional durability for high-cycle mating applications. Selection between these options depends on application mating cycle requirements and environmental exposure.
Q: Can I use a substitute with higher current rating (7.5A) in place of the 6A rated 745392-2?
A: Yes. Higher current ratings indicate greater current-carrying capacity. A 7.5A rated connector can safely carry 6A loads. This substitution is appropriate for applications where the original 6A rating is adequate. However, the system design must still limit current to the original 6A specification. Higher-rated connectors do not permit exceeding the original system current limits.
Q: What is the impact of RoHS Compliance on part selection?
A: The original 745392-2 is RoHS Non-Compliant, containing lead or other restricted substances. All recommended substitutes are RoHS Compliant, meeting EU Directive 2011/65/EU and equivalent regulations. For new designs, system upgrades, and applications subject to regulatory compliance requirements, RoHS Compliant substitutes (5745392-2, L177 series, DB25S565 series) are mandatory. For legacy system maintenance where RoHS compliance is not required, the original 745392-2 remains functional if available.
Q: How do I select between TE Connectivity 5745392-2 and Amphenol ICC alternatives?
A: The TE Connectivity 5745392-2 is the preferred primary choice due to direct form-fit-function equivalence and elimination of design re-qualification. Select Amphenol ICC alternatives when TE Connectivity 5745392-2 availability is constrained or when enhanced electrical specifications (higher current/voltage ratings, extended temperature range) are beneficial. Verify mechanical compatibility (backset spacing, flange features) for existing installations. All alternatives are RoHS Compliant and Active status, ensuring supply chain continuity.
Q: Are there any temperature range limitations when substituting parts?
A: The 745392-2 operates -55°C to 105°C. Most substitute parts (5745392-2, L177 series, DB25S565CTLF, DBPV25S565GTLF) extend the upper limit to 125°C, providing enhanced thermal margin. The NorComp 174-025-212R141 operates -50°C to 100°C, which is slightly more restrictive. For applications operating near the original -55°C to 105°C limits, verify that substitute part temperature ratings encompass the required operating envelope.
Q: What packaging options are available for substitute parts?
A: The 745392-2 original packaging is not specified. Substitute parts are supplied in Bulk, Tray, or unspecified packaging. The 5745392-2 is supplied in Bulk (996 units). Amphenol ICC L177 series and NorComp parts are supplied in Tray packaging. Packaging selection affects unit cost, handling, and storage requirements. Consult procurement specifications for packaging requirements in your supply chain.
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