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L77DBG25SOL2RM5 D-Sub 25 Position Receptacle Equivalent & Substitute Parts
Part Overview
The L77DBG25SOL2RM5 is a 25 position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This through-hole solder termination connector features female sockets in a vertical orientation with board-side M3 flange mounting. The connector is classified as Active product status and is RoHS compliant with unlimited moisture sensitivity level (MSL 1).
Substitute parts are identified for applications requiring alternative mounting configurations, flange features, shell finishes, or compliance certifications while maintaining core electrical and mechanical compatibility within the D-Sub 25 position receptacle category.
Substiute Parts
Key Parameters
| Parameter | L77DBG25SOL2RM5 Specification |
|---|---|
| Connector Type | Receptacle, Female Sockets |
| Number of Positions | 25 |
| Shell Size / Layout | 3 (DB, B) |
| Mounting Type | Through Hole |
| Termination | Solder |
| Current Rating | 7.5A |
| Voltage Rating | 300V |
| Operating Temperature Range | -55°C to 125°C |
| Shell Material / Finish | Steel, Tin Plated |
| Contact Material | Brass |
| Contact Finish | Gold (8.00µin / 0.203µm) |
| Flange Feature | Board Side (M3) |
| Dielectric Material | Thermoplastic, Glass Filled |
| Flammability Rating | UL94 V-0 |
| RoHS Status | RoHS Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution logic for D-Sub 25 position receptacle connectors is determined by the following critical parameters:
Core Compatibility Parameters (Must Match):
- Connector Type: Receptacle, Female Sockets
- Number of Positions: 25
- Shell Size / Layout: 3 (DB, B)
- Mounting Type: Through Hole
- Termination: Solder
Variable Parameters (Determine Substitution Category):
- Flange Feature (Board Side M3, Board Side 4-40, Housing/Shell Unthreaded, Mating Side configurations)
- Shell Material / Finish (Steel Tin Plated, Steel Nickel Plated, Steel unspecified)
- Contact Material (Brass, Copper Alloy)
- Contact Finish (Gold, unspecified)
- Current Rating (5A to 7.5A range)
- Voltage Rating (100V to 300V range)
- Operating Temperature Range (-20°C to 125°C, -50°C to 100°C, -55°C to 125°C)
- Dielectric Material (Thermoplastic Glass Filled, PCT, PBT Polyester, Polyamide PA6T)
- Product Status (Active, Obsolete)
- RoHS Compliance Generation (RoHS Compliant, ROHS3 Compliant)
Substitute parts are grouped by flange configuration and shell finish characteristics, as these determine physical mounting compatibility and environmental performance.
Parameter Comparison
| Part Number | Manufacturer | Connector Type | Positions | Shell Size | Mounting Type | Termination | Current Rating (A) | Voltage Rating (V) | Operating Temp (°C) | Shell Material / Finish | Contact Material | Flange Feature | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L77DBG25SOL2RM5 | Amphenol ICC | Receptacle, Female Sockets | 25 | 3 (DB, B) | Through Hole | Solder | 7.5 | 300 | -55 to 125 | Steel, Tin Plated | Brass | Board Side (M3) | Active | RoHS Compliant |
| 09643127210 | HARTING | Receptacle, Female Sockets | 25 | 3 (DB, B) | Through Hole | Solder | 7.5 | 100 | -20 to 125 | Steel | Copper Alloy | Housing/Shell (Unthreaded) | Active | ROHS3 Compliant |
| 09643127230 | HARTING | Receptacle, Female Sockets | 25 | 3 (DB, B) | Through Hole | Solder | 7.5 | 100 | -20 to 125 | Steel | Copper Alloy | Housing/Shell (Unthreaded) | Active | ROHS3 Compliant |
| 09643127240 | HARTING | Receptacle, Female Sockets | 25 | 3 (DB, B) | Through Hole | Solder | 7.5 | 100 | -20 to 125 | Steel | Copper Alloy | Housing/Shell (Unthreaded) | Active | ROHS3 Compliant |
| 09663556513 | HARTING | Receptacle, Female Sockets | 25 | 3 (DB, B) | Through Hole | Solder | 6.5 | Not Specified | -55 to 125 | Steel | Copper Alloy | Mating Side, Female Screwlock (4-40) | Active | ROHS3 Compliant |
| 172-025-212R011 | NorComp Inc. | Receptacle, Female Sockets | 25 | 3 (DB, B) | Panel Mount, Through Hole | Solder | 5 | Not Specified | -50 to 100 | Steel, Tin Plated | Brass | Board Side (4-40) | Obsolete | ROHS3 Compliant |
| 172-025-212R021 | NorComp Inc. | Receptacle, Female Sockets | 25 | 3 (DB, B) | Panel Mount, Through Hole | Solder | 5 | Not Specified | -50 to 100 | Steel, Tin Plated | Brass | Board Side (4-40) | Obsolete | ROHS3 Compliant |
| 172-025-212R911 | NorComp Inc. | Receptacle, Female Sockets | 25 | 3 (DB, B) | Panel Mount, Through Hole | Solder | 5 | Not Specified | -50 to 100 | Steel, Tin Plated | Brass | Board Side (4-40), Mating Side, Female Screwlock (4-40) | Obsolete | ROHS3 Compliant |
| 172-E25-213R001 | NorComp Inc. | Receptacle, Female Sockets | 25 | 3 (DB, B) | Panel Mount, Through Hole | Solder | 5 | Not Specified | -50 to 100 | Steel, Nickel Plated | Brass | Housing/Shell (Unthreaded) | Active | ROHS3 Compliant |
| 172-E25-213R011 | NorComp Inc. | Receptacle, Female Sockets | 25 | 3 (DB, B) | Panel Mount, Through Hole | Solder | 5 | Not Specified | -50 to 100 | Steel, Nickel Plated | Brass | Board Side (4-40) | Active | ROHS3 Compliant |
| 172-E25-213R031 | NorComp Inc. | Receptacle, Female Sockets | 25 | 3 (DB, B) | Panel Mount, Through Hole | Solder | 5 | Not Specified | -50 to 100 | Steel, Nickel Plated | Brass | Mating Side (4-40) | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Active Status Substitutes (Recommended for New Designs):
HARTING 09643127210, 09643127230, and 09643127240 are active products suitable for applications where housing/shell unthreaded flange configuration is acceptable. These parts maintain 7.5A current rating and UL94 V-0 flammability compliance. Operating temperature minimum of -20°C differs from the L77DBG25SOL2RM5 specification of -55°C; applications requiring extended low-temperature operation below -20°C must use the primary part or HARTING 09663556513.
HARTING 09663556513 provides operating temperature range of -55°C to 125°C matching the primary part, with mating side female screwlock flange configuration. Current rating is 6.5A versus 7.5A on the primary part. This part is suitable for applications requiring extended temperature range with mating-side connector retention.
NorComp 172-E25 series (213R001, 213R011, 213R031) are active products with nickel-plated steel shells and brass contacts. These parts feature panel mount through-hole configuration and 5A current rating. Operating temperature range is -50°C to 100°C. Flange configurations vary: unthreaded housing (213R001), board side 4-40 (213R011), and mating side 4-40 (213R031). These parts are suitable for panel-mounted applications with reduced current and temperature requirements.
Obsolete Status Substitutes (Legacy Applications Only):
NorComp 172-025 series (212R011, 212R021, 212R911) are classified as obsolete. These parts feature panel mount through-hole configuration, 5A current rating, and tin-plated steel shells with brass contacts. Operating temperature range is -50°C to 100°C. These parts are available in inventory but are not recommended for new designs.
Compliance Considerations:
All substitute parts listed are RoHS compliant (either RoHS Compliant or ROHS3 Compliant) and REACH unaffected. All parts carry UL94 V-0 flammability rating. Moisture sensitivity level is MSL 1 (unlimited) for all parts.
Frequently Asked Questions (FAQ)
Q: Can HARTING 09643127210 directly replace L77DBG25SOL2RM5?
A: HARTING 09643127210 is electrically and mechanically compatible as a 25 position D-Sub receptacle with through-hole solder termination. Key differences are: flange feature (housing/shell unthreaded versus board side M3), shell finish (steel unspecified versus tin plated), contact material (copper alloy versus brass), voltage rating (100V versus 300V), and operating temperature minimum (-20°C versus -55°C). Substitution is valid for applications not requiring board-side M3 mounting, 300V voltage rating, or operation below -20°C.
Q: What is the difference between board-side and mating-side flange configurations?
A: Board-side flange mounts to the printed circuit board surface with threaded holes (M3 or 4-40). Mating-side flange provides connector retention at the mating interface with female screwlock threads. Housing/shell unthreaded configuration provides no integral flange retention. Selection depends on mechanical mounting requirements and connector retention strategy.
Q: Why do NorComp 172-E25 series parts have lower current rating (5A) than the primary part (7.5A)?
A: Current rating is determined by contact design, material composition, and thermal characteristics. The 5A rating on NorComp parts reflects their specific contact geometry and material properties. Applications requiring 7.5A current capacity must use parts rated for that specification.
Q: Are obsolete parts suitable for new product designs?
A: Obsolete parts (NorComp 172-025 series) are not recommended for new designs. While currently in inventory, obsolete classification indicates discontinued manufacturing and potential future unavailability. New designs should use active status parts: HARTING series or NorComp 172-E25 series.
Q: What is the significance of operating temperature range differences?
A: Operating temperature range defines the thermal environment in which the connector maintains specified electrical and mechanical performance. L77DBG25SOL2RM5 operates from -55°C to 125°C. HARTING 09643127210/230/240 operate from -20°C to 125°C, limiting use in applications below -20°C. Applications requiring -55°C operation must use L77DBG25SOL2RM5 or HARTING 09663556513.
Q: How do shell material and finish affect connector performance?
A: Shell material and finish provide electromagnetic shielding and environmental protection. Tin plating (L77DBG25SOL2RM5) provides corrosion resistance and solderability. Nickel plating (NorComp 172-E25 series) provides enhanced corrosion resistance in harsh environments. Steel without specified finish (HARTING parts) requires evaluation for specific environmental conditions. Contact finish (gold on primary part) provides low-resistance contact surfaces; unspecified contact finish on some substitutes may affect contact reliability.
Q: What packaging differences exist between substitute parts?
A: L77DBG25SOL2RM5 is supplied in tray packaging. HARTING parts are supplied in bulk packaging. NorComp parts are supplied in tray packaging. Packaging affects handling, storage, and component placement in manufacturing. Bulk packaging may require additional processing for automated assembly.
Q: Can I use HARTING 09663556513 in applications requiring board-side M3 mounting?
A: HARTING 09663556513 features mating-side female screwlock (4-40) flange configuration, not board-side M3. This part is not suitable for applications requiring board-side M3 mounting. For board-side mounting with extended temperature range (-55°C to 125°C), the primary part L77DBG25SOL2RM5 is required.
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