Request Quote
(Ships tomorrow)
L77DFBH25STRM5 D-Sub 25 Position Receptacle Connector Equivalent & Substitute Parts
Part Overview
The L77DFBH25STRM5 is a 25 position D-Sub receptacle connector manufactured by Amphenol ICC in the DF series. This panel mount, through hole solder terminated connector features female sockets with board side flange (4-40) in a 3 (DB, B) shell size configuration. The connector is actively produced and widely deployed in applications requiring standard D-Sub interface connectivity. Equivalent and substitute part identification is necessary for procurement flexibility, supply chain continuity, and design iterations where alternative manufacturers or connector configurations may be specified.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Connector Style | D-Sub |
| Connector Type | Receptacle, Female Sockets |
| Number of Positions | 25 |
| Number of Rows | 2 |
| Shell Size, Connector Layout | 3 (DB, B) |
| Mounting Type | Panel Mount, Through Hole |
| Termination | Solder |
| Flange Feature | Board Side (4-40) |
| Shell Material, Finish | Steel, Tin Plated |
| Contact Finish | Gold |
| Material Flammability Rating | UL94 V-0 |
| Current Rating | 7.5A |
| Voltage Rating | 300V |
| Operating Temperature Range | -55°C to 155°C |
| RoHS Status | RoHS Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution of the L77DFBH25STRM5 is determined by strict alignment of the following electrical and mechanical parameters: connector style (D-Sub), connector type (Receptacle, Female Sockets), number of positions (25), number of rows (2), shell size (3/DB, B), mounting type (Panel Mount with Through Hole capability), and termination method (Solder). The primary electrical compatibility factors include current rating (minimum 7.5A required), voltage rating (minimum 300V), operating temperature range (-55°C to 155°C minimum coverage), and contact finish (Gold plated). The mechanical interface requirements include flange feature type and material specifications.
Substitute parts are grouped into three categories:
Category 1: NorComp 172-E Series — These receptacles match the core D-Sub 25 position configuration with identical shell size and through hole solder termination. However, they feature current ratings of 5A (lower than 7.5A), restricted operating temperature range (-50°C to 100°C), and board side or mating side flange configurations. One variant (172-E25-213R911) includes Board Lock feature and female screwlock capability.
Category 2: TE Connectivity AMPLIMITE HDP-20 Series — The 2-338315-2 and 5-338315-2 variants use Through Hole mounting with Housing/Shell flange features rather than Board Side mounting. They provide 6A current rating and operating temperature to 105°C, with the 2-338315-2 including Board Lock feature.
Category 3: TE Connectivity AMPLIMITE HD-20 Series — The 2-747708-0, 207828-3, 207828-4, and 5207828-4 variants feature Through Hole mounting with Housing/Shell flange configurations and 6A current rating. These units have restricted voltage rating specifications (125V maximum) and RoHS non-compliance status (except 5207828-4 which is RoHS Compliant).
Parameter Comparison
| Parameter | L77DFBH25STRM5 (Main) | 172-E25-213R001 | 172-E25-213R011 | 172-E25-213R031 | 172-E25-213R911 | 2-338315-2 | 2-747708-0 | 207828-3 | 207828-4 | 5-338315-2 | 5207828-4 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Amphenol ICC | NorComp Inc. | NorComp Inc. | NorComp Inc. | NorComp Inc. | TE Connectivity | TE Connectivity | TE Connectivity | TE Connectivity | TE Connectivity | TE Connectivity |
| Connector Type | Receptacle, Female | Receptacle, Female | Receptacle, Female | Receptacle, Female | Receptacle, Female | Receptacle, Female | Receptacle, Female | Receptacle, Female | Receptacle, Female | Receptacle, Female | Receptacle, Female |
| Positions / Rows | 25 / 2 | 25 / 2 | 25 / 2 | 25 / 2 | 25 / 2 | 25 / 2 | 25 / 2 | 25 / 2 | 25 / 2 | 25 / 2 | 25 / 2 |
| Shell Size | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) |
| Mounting Type | Panel Mount, Through Hole | Panel Mount, Through Hole | Panel Mount, Through Hole | Panel Mount, Through Hole | Panel Mount, Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Termination | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder |
| Flange Feature | Board Side (4-40) | Housing/Shell (Unthreaded) | Board Side (4-40) | Mating Side (4-40) | Board Side (4-40) + Mating Side (4-40) | Housing/Shell (M3) | Housing/Shell (4-40) | Housing/Shell (Unthreaded) | Housing/Shell (Unthreaded) | Housing/Shell (Unthreaded) | Housing/Shell (Unthreaded) |
| Shell Material, Finish | Steel, Tin Plated | Steel, Nickel Plated | Steel, Nickel Plated | Steel, Nickel Plated | Steel, Nickel Plated | Steel, Tin Plated | Steel, Tin Plated | Not Specified | Not Specified | Steel, Tin Plated | Not Specified |
| Contact Finish | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold |
| Current Rating (Amps) | 7.5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 |
| Voltage Rating | 300V | Not Specified | Not Specified | Not Specified | Not Specified | Not Specified | 125V | 125V | 125V | Not Specified | 125V |
| Operating Temperature Range | -55°C to 155°C | -50°C to 100°C | -50°C to 100°C | -50°C to 100°C | -50°C to 100°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 |
| Contact Material | Copper Alloy | Brass | Brass | Brass | Brass | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze |
| Dielectric Material | Thermoplastic, Glass Filled | Polyamide (PA6T), Nylon 6T | Polyamide (PA6T), Nylon 6T | Polyamide (PA6T), Nylon 6T | Polyamide (PA6T), Nylon 6T | Polyester, Glass Filled | Thermoplastic | Polyester | Polyester | Polyester, Glass Filled | Polyester |
| Material 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 |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS Non-compliant | RoHS Non-compliant | RoHS Non-compliant | ROHS3 Compliant | RoHS Compliant |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility): The 172-E25-213R011 (NorComp) and 2-338315-2 (TE Connectivity) are suitable as substitutes when design tolerances accommodate reduced current ratings. The 172-E25-213R011 maintains Board Side (4-40) flange compatibility with the original and achieves ROHS3 compliance. The 2-338315-2 provides 6A current rating with Board Lock feature and ROHS3 compliance, though it lacks the specified Panel Mount flange designation.
Conditional Substitutes: The 2-747708-0 and 5207828-4 are viable when voltage requirements do not exceed 125V specification. The 5207828-4 is preferred in this subset due to RoHS Compliant status and higher operating temperature compatibility. The 172-E25-213R031 is suitable for applications where Mating Side (4-40) flange configuration is acceptable.
Substitutes with Design Constraints: The 207828-3 and 207828-4 (AMPLIMITE HD-20) present the greatest electrical constraint with 125V voltage rating and RoHS non-compliance. These are appropriate only for applications where original voltage and compliance specifications can be relaxed.
Not Recommended: The 172-E25-213R001 (Housing/Shell unthreaded flange) and 5-338315-2 (Housing/Shell unthreaded flange) require mechanical redesign at the panel mounting interface and do not maintain mechanical compatibility with the original connector footprint.
Frequently Asked Questions (FAQ)
Q: Can the NorComp 172-E25 series replace the L77DFBH25STRM5 in all applications? A: The 172-E25 series provides full D-Sub 25 position receptacle functionality with through hole solder termination and UL94 V-0 flammability rating. However, the 5A current rating is lower than the 7.5A specification of the original. The 172-E25-213R011 maintains Board Side (4-40) flange compatibility. Applications operating above 5A current or requiring full 300V voltage specification require electrical validation before substitution.
Q: What is the mounting interface difference between the L77DFBH25STRM5 and TE Connectivity alternatives? A: The L77DFBH25STRM5 specifies Panel Mount with Through Hole termination and Board Side (4-40) flange. Most TE Connectivity substitutes (2-747708-0, 207828-3, 207828-4, 5207828-4) feature Housing/Shell or Housing/Shell (Unthreaded) flange configurations. This requires evaluation of the panel cutout and fastening interface. The 2-338315-2 uses Housing/Shell (M3) flange, requiring panel hole diameter adjustment.
Q: Are all substitutes RoHS compliant? A: The L77DFBH25STRM5 is RoHS Compliant. Among substitutes, the NorComp 172-E series and 2-338315-2, 5-338315-2, 5207828-4 achieve ROHS3 Compliant status. The TE Connectivity 2-747708-0, 207828-3, and 207828-4 are RoHS non-compliant and require compliance verification for target application environments.
Q: What operating temperature consideration applies to substitute selection? A: The L77DFBH25STRM5 operates from -55°C to 155°C. The NorComp 172-E series is limited to -50°C to 100°C. The TE Connectivity AMPLIMITE series (both HDP-20 and HD-20) operates to 105°C. For applications requiring the full -55°C to 155°C range, no substitute fully matches the original specification; circuit design or thermal management modifications may be required.
Q: Can the L77DFBH25STRM5 be replaced with a 172-E25-213R031 which has mating side flange instead of board side? A: The 172-E25-213R031 provides identical electrical and core mechanical D-Sub 25 position configuration. However, it features Mating Side (4-40) flange positioning instead of Board Side (4-40). This requires evaluation of the panel interface geometry. If the original design used Board Side fastening holes, mechanical redesign of the mounting interface is necessary for the mating side configuration.
Q: What is the contact material specification difference between the original and substitutes? A: The L77DFBH25STRM5 uses Copper Alloy contacts. NorComp 172-E series uses Brass contacts. TE Connectivity AMPLIMITE series uses Phosphor Bronze contacts. All achieve Gold contact finish specifications. Contact material variation may affect wiping force characteristics and insertion force. Applications with specific contact resistance or force requirements should reference component datasheets for detailed contact material properties.
Q: Are there packaging considerations when selecting substitutes? A: The L77DFBH25STRM5 is supplied in Tray packaging. Substitutes are supplied in various packaging configurations: NorComp 172-E series in Tray; TE Connectivity 2-338315-2 and 5-338315-2 in Bulk; TE Connectivity 2-747708-0, 207828-3, 207828-4, and 5207828-4 in Tube. Packaging format affects shelf storage, handling, and quantity units; no electrical or mechanical impact results from packaging variation.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts