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TE Connectivity 747052-1 D-Sub 37 Position Receptacle Equivalent & Substitute Parts
Part Overview
The TE Connectivity 747052-1 is a 37 position D-Sub receptacle connector with female sockets, designed for IDC ribbon cable termination in free hanging in-line mounting applications. This connector is part of the AMPLIMITE HDF-20 series and features a steel tin-plated shell with gold-plated phosphor bronze contacts. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations where compatible alternatives are required.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 747052-1 |
| Manufacturer | TE Connectivity AMP Connectors |
| Connector Type | D-Sub Receptacle, Female Sockets |
| Number of Positions | 37 |
| Shell Size / Connector Layout | 4 (DC, C) |
| Mounting Type | Free Hanging (In-Line) |
| Termination Method | IDC, Ribbon Cable |
| Shell Material / Finish | Steel, Tin Plated |
| Contact Material | Phosphor Bronze |
| Contact Finish | Gold, 30.0µin (0.76µm) |
| Current Rating | 1.25A |
| Operating Temperature Range | -55°C to 105°C |
| Flammability Rating | UL94 V-0 |
| Product Status | Obsolete |
| RoHS Status | RoHS Non-Compliant |
Substitute Part Grouping Explanation
Substitution of the TE Connectivity 747052-1 is determined by the following critical parameters that must remain consistent across equivalent parts:
Core Compatibility Parameters:
- Connector type: D-Sub receptacle with female sockets
- Number of positions: 37
- Shell size and layout: 4 (DC, C)
- Termination method: IDC ribbon cable
- Contact type: Signal
- Flange feature: Housing/Shell (4-40)
- Dielectric material: Thermoplastic
- Moisture sensitivity level: 1 (Unlimited)
- Material flammability rating: UL94 V-0
Substitution Categories:
Direct Equivalent (Identical Specifications): The part 1658610-1 from TE Connectivity AMP Connectors is a direct equivalent with identical electrical and mechanical specifications. This part differs only in packaging (bulk versus standard) and includes RoHS compliance and REACH affected status.
Similar Alternatives (Functional Equivalents with Parameter Variations): Parts from 3M (8337 series) and Amphenol ICC (L117DCF series) provide functional equivalence with the following allowable variations:
- Mounting type: Panel mount (3M series) versus free hanging in-line (original and Amphenol series)
- Current rating: 1A to 5A (higher ratings acceptable for same position count)
- Contact finish thickness: 15.0µin (0.38µm) versus 30.0µin (0.76µm)
- Shell material finish: Steel tin-plated, steel nickel-plated, or plastic
- Contact material: Brass or phosphor bronze
- Operating temperature range: -40°C to 125°C (extended range acceptable)
- Voltage rating: 250V (specified in Amphenol parts)
- Product status: Active (preferred over obsolete)
- RoHS compliance: ROHS3 compliant or RoHS compliant (preferred over non-compliant)
Parameter Comparison
| Parameter | 747052-1 (TE) | 1658610-1 (TE) | 8337-6000 (3M) | 8337-6003 (3M) | 8337-6009 (3M) | 8337-8003 (3M) | L117DCFRA37S (Amphenol) | L117DCFRAA37S (Amphenol) | L117DCFRB37S (Amphenol) | L117DCFRBA37S (Amphenol) | L117DCFRCA37S (Amphenol) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Connector Type | D-Sub Receptacle, Female Sockets | D-Sub Receptacle, Female Sockets | D-Sub Receptacle, Female Sockets | D-Sub Receptacle, Female Sockets | D-Sub Receptacle, Female Sockets | D-Sub Receptacle, Female Sockets | D-Sub Receptacle, Female Sockets | D-Sub Receptacle, Female Sockets | D-Sub Receptacle, Female Sockets | D-Sub Receptacle, Female Sockets | D-Sub Receptacle, Female Sockets |
| Number of Positions | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 |
| Shell Size / Layout | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) |
| Mounting Type | Free Hanging (In-Line) | Free Hanging (In-Line) | Panel Mount | Panel Mount | Panel Mount | Panel Mount | Free Hanging (In-Line) | Free Hanging (In-Line) | Free Hanging (In-Line) | Free Hanging (In-Line) | Free Hanging (In-Line) |
| Termination Method | IDC, Ribbon Cable | IDC, Ribbon Cable | IDC, Ribbon Cable | IDC, Ribbon Cable | IDC, Ribbon Cable | IDC, Ribbon Cable | IDC, Ribbon Cable | IDC, Ribbon Cable | IDC, Ribbon Cable | IDC, Ribbon Cable | IDC, Ribbon Cable |
| Shell Material / Finish | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Nickel Plated | Plastic | Steel, Nickel Plated | Steel, Nickel Plated |
| Contact Material | Phosphor Bronze | Phosphor Bronze | Copper Alloy | Copper Alloy | Copper Alloy | Copper Alloy | Brass | Phosphor Bronze | Brass | Phosphor Bronze | Phosphor Bronze |
| Contact Finish | Gold, 30.0µin | Gold, 30.0µin | Gold, 30.0µin | Gold, 30.0µin | Gold, 30.0µin | Gold, 30.0µin | Gold, 15.0µin | Gold, 15.0µin | Gold, 15.0µin | Gold, 15.0µin | Gold, 15.0µin |
| Current Rating (Amps) | 1.25A | 1.25A | 1A | 1A | 1A | 1A | 3A | 5A | 3A | 5A | 5A |
| Operating Temperature Range | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -40°C to 125°C | -55°C to 105°C | -40°C to 125°C | -40°C to 125°C |
| Voltage Rating | Not Specified | Not Specified | Not Specified | Not Specified | Not Specified | Not Specified | 250V | 250V | 250V | 250V | 250V |
| Flammability Rating | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 |
| Product Status | Obsolete | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | RoHS Non-Compliant | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant |
Engineering Selection Recommendations
Primary Recommendation: 1658610-1 (TE Connectivity)
The 1658610-1 is the direct equivalent to the 747052-1 with identical electrical and mechanical specifications. This part maintains all core parameters including 37 positions, shell size 4 (DC, C), free hanging in-line mounting, IDC ribbon cable termination, steel tin-plated shell, phosphor bronze contacts with 30.0µin gold plating, 1.25A current rating, and -55°C to 105°C operating temperature range. The primary advantage is RoHS compliance and REACH affected status, making it suitable for new designs and applications requiring regulatory compliance. Inventory availability is 3405 pieces.
Secondary Recommendations for Active Product Status:
For applications where active product status is required, the following alternatives provide functional equivalence:
Amphenol ICC L117DCF Series (Free Hanging In-Line Mounting):
- L117DCFRA37S: 3A current rating, brass contacts, 15.0µin gold plating, 250V voltage rating
- L117DCFRAA37S: 5A current rating, phosphor bronze contacts, extended temperature range (-40°C to 125°C), female screwlock mating side
- L117DCFRB37S: 3A current rating, brass contacts, plastic shell, 15.0µin gold plating
- L117DCFRBA37S: 5A current rating, phosphor bronze contacts, extended temperature range, cable side M3 screwlock
- L117DCFRCA37S: 5A current rating, phosphor bronze contacts, extended temperature range, mating side 4-40 screwlock
All Amphenol parts feature strain relief, RoHS compliance, and active product status. Current ratings exceed the original 1.25A specification, providing design margin for signal integrity and thermal performance.
3M 8300 Series (Panel Mount Alternative):
- 8337-6000, 8337-6003, 8337-6009, 8337-8003: All feature panel mount configuration with 1A current rating, copper alloy contacts, 15.0µin gold plating, and active product status with ROHS3 compliance.
Panel mount variants are suitable for applications requiring fixed panel installation rather than free hanging in-line configuration. Current rating of 1A is lower than the original 1.25A specification and should be evaluated against application requirements.
Compliance Considerations:
The original 747052-1 is RoHS non-compliant. For new designs or applications subject to RoHS regulations, 1658610-1, all Amphenol L117DCF variants, and all 3M 8337 variants provide RoHS compliance. REACH compliance status varies: 1658610-1 is REACH affected, 3M 8337-6003 and 8337-8003 are REACH affected, while 3M 8337-6000 and 8337-6009 are REACH unaffected. Amphenol parts do not specify REACH status in provided data.
Frequently Asked Questions (FAQ)
Q: Can the 1658610-1 be used as a direct replacement for the 747052-1?
A: Yes. The 1658610-1 is a direct equivalent with identical specifications for connector type, position count, shell size, mounting type, termination method, shell material finish, contact material, contact finish thickness, current rating, operating temperature range, and flammability rating. The primary differences are packaging format (bulk versus standard) and improved RoHS compliance status.
Q: What is the key difference between the TE Connectivity parts and the Amphenol ICC parts?
A: The Amphenol L117DCF series provides higher current ratings (3A to 5A versus 1.25A), thinner gold plating (15.0µin versus 30.0µin), specified voltage rating (250V), and strain relief features. Amphenol parts maintain free hanging in-line mounting identical to the original. Contact material varies between brass and phosphor bronze depending on specific part number. Operating temperature range extends to 125°C on selected variants.
Q: Why would I choose a 3M part over the TE Connectivity or Amphenol alternatives?
A: The 3M 8337 series is appropriate when panel mount configuration is required instead of free hanging in-line mounting. All 3M variants feature active product status and ROHS3 compliance. However, the 1A current rating is lower than the original 1.25A specification and should be evaluated against application signal and power requirements. The 3M series uses copper alloy contacts rather than phosphor bronze or brass.
Q: Are there any compatibility issues with the different shell material finishes?
A: Shell material finish variations (steel tin-plated, steel nickel-plated, or plastic) do not affect electrical compatibility or mating interface. Selection should be based on application environmental requirements, corrosion resistance needs, and electromagnetic shielding requirements. Steel tin-plated and steel nickel-plated shells provide superior shielding and corrosion resistance compared to plastic shells.
Q: What does the contact finish thickness difference mean for part selection?
A: The original 747052-1 specifies 30.0µin (0.76µm) gold plating, while Amphenol parts specify 15.0µin (0.38µm). Both thicknesses meet industry standards for signal integrity and contact durability. Thicker plating (30.0µin) provides extended contact life in high-cycle mating applications. Thinner plating (15.0µin) is acceptable for applications with moderate mating cycles and is standard in modern connector designs.
Q: Can I use an Amphenol part with a higher current rating in place of the original 1.25A part?
A: Yes. Higher current ratings (3A to 5A) are acceptable substitutes for the original 1.25A specification. The higher rating indicates the connector can safely handle greater current without exceeding temperature limits. This provides design margin and does not create compatibility issues with existing cable or termination equipment designed for 1.25A operation.
Q: What is the significance of the "Feed Through" feature listed for all parts?
A: The feed through feature indicates that the connector allows signal pass-through capability, enabling daisy-chaining or intermediate connection points in ribbon cable applications. This feature is consistent across all listed parts and does not affect substitution compatibility.
Q: Are there any packaging considerations when selecting a substitute part?
A: Yes. The original 747052-1 is listed with unspecified packaging. The 1658610-1 is supplied in bulk packaging. Amphenol parts are supplied in tray packaging. The 3M parts are supplied in either tray or bulk packaging depending on specific part number. Packaging format affects handling, storage, and ordering quantities but does not affect electrical or mechanical compatibility. Verify packaging requirements with your procurement process.
Q: Which substitute part should I select for a new design requiring maximum regulatory compliance?
A: The 1658610-1 provides the best regulatory compliance profile with RoHS compliance and REACH affected status. For applications requiring REACH unaffected status, the 3M 8337-6000 or 8337-6009 are suitable alternatives, though they feature panel mount configuration and 1A current rating. All Amphenol L117DCF variants provide RoHS compliance but do not specify REACH status in available data.
Q: What is the difference between the various Amphenol L117DCF part numbers?
A: The Amphenol variants differ in flange feature configuration (unthreaded housing, female screwlock mating side, cable side screwlock, or mating side 4-40 screwlock), shell material finish (steel tin-plated, steel nickel-plated, or plastic), contact material (brass or phosphor bronze), current rating (3A or 5A), and operating temperature range (-55°C to 105°C or -40°C to 125°C). All maintain 37 positions, shell size 4 (DC, C), free hanging in-line mounting, and IDC ribbon cable termination. Select the specific variant based on mechanical mounting requirements and environmental operating conditions.
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