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L77DFBH25SOL2 D-Sub Receptacle: Equivalent & Substitute Parts
Part Overview
The L77DFBH25SOL2 is a 25-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This panel-mount, solder-termination connector features female sockets in a DB/B shell size (3) configuration and is actively manufactured. Alternative equivalent parts are available from multiple manufacturers including NorComp Inc. and TE Connectivity AMP Connectors. Substitution may be necessary due to inventory availability, lead time requirements, application-specific compliance mandates, or procurement cost optimization.
Substiute Parts
Key Parameters
| Parameter | L77DFBH25SOL2 |
|---|---|
| Manufacturer | Amphenol ICC (Commercial Products) |
| Connector Type | D-Sub Receptacle, Female Sockets |
| Number of Positions | 25 |
| Shell Size / Layout | 3 (DB, B) |
| Mounting Type | Panel Mount, Through Hole |
| Flange Feature | Board Side (4-40) |
| Termination | Solder |
| Shell Material / Finish | Steel, Tin Plated |
| Contact Finish | Gold (20.0µin / 0.51µm) |
| Contact Material | Copper Alloy |
| Current Rating | 7.5A |
| Voltage Rating | 300V |
| Operating Temperature | -55°C to 125°C |
| Flammability Rating | UL94 V-0 |
| RoHS Status | RoHS Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution compatibility for the L77DFBH25SOL2 is determined by the following mandatory parameters: connector type (receptacle, female sockets), 25-position count, 2-row configuration, DB/B shell size, solder termination, panel mount through-hole mounting, and flange feature specification. Secondary compatibility parameters include shell material finish, contact material, contact finish specifications, current rating capacity, and operating temperature range.
The substitute parts are grouped into two categories based on flange feature alignment and electrical performance:
Category 1: NorComp 172-E Series (172-E25-213R001, 172-E25-213R011, 172-E25-213R031, 172-E25-213R911) — These parts share identical core specifications: 25-position D-Sub receptacle, panel mount through-hole, solder termination, UL94 V-0 rating, and gold-plated contacts. Differences exist in flange feature configuration (board side, mating side, or combined with female screwlock features). These parts operate at 5A current rating and -50°C to 100°C temperature range.
Category 2: TE Connectivity AMPLIMITE Series (2-338315-2, 2-747708-0, 207828-3, 207828-4, 5-338315-2, 5207828-4) — These parts maintain 25-position D-Sub receptacle configuration, solder termination, and UL94 V-0 rating. Core differences include through-hole mounting without panel mount flange (housing/shell flange types), 6A current rating, phosphor bronze contact material, and -55°C to 105°C operating temperature. These parts support board lock features in specified variants.
Parameter Comparison
| Part Number | Manufacturer | Positions | Termination | Shell Finish | Contact Material | Contact Finish | Current Rating (A) | Temperature Range (°C) | Flange Type | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| L77DFBH25SOL2 | Amphenol ICC | 25 | Solder | Steel, Tin | Copper Alloy | Gold (20.0µin) | 7.5 | -55 to 125 | Board Side (4-40) | RoHS Compliant |
| 172-E25-213R001 | NorComp Inc. | 25 | Solder | Steel, Nickel | Brass | Gold (Flash) | 5 | -50 to 100 | Housing/Shell (Unthreaded) | ROHS3 Compliant |
| 172-E25-213R011 | NorComp Inc. | 25 | Solder | Steel, Nickel | Brass | Gold (Flash) | 5 | -50 to 100 | Board Side (4-40) | ROHS3 Compliant |
| 172-E25-213R031 | NorComp Inc. | 25 | Solder | Steel, Nickel | Brass | Gold (Flash) | 5 | -50 to 100 | Mating Side (4-40) | ROHS3 Compliant |
| 172-E25-213R911 | NorComp Inc. | 25 | Solder | Steel, Nickel | Brass | Gold (Flash) | 5 | -50 to 100 | Board Side (4-40) + Mating (4-40) | ROHS3 Compliant |
| 2-338315-2 | TE Connectivity AMP | 25 | Solder | Steel, Tin | Phosphor Bronze | Gold | 6 | -55 to 105 | Housing/Shell (M3) | ROHS3 Compliant |
| 2-747708-0 | TE Connectivity AMP | 25 | Solder | Steel, Tin | Phosphor Bronze | Gold (30.0µin) | 6 | -55 to 105 | Housing/Shell (4-40) | RoHS non-compliant |
| 207828-3 | TE Connectivity AMP | 25 | Solder | Not Specified | Phosphor Bronze | Gold (Flash) | 6 | -55 to 105 | Housing/Shell (Unthreaded) | RoHS non-compliant |
| 207828-4 | TE Connectivity AMP | 25 | Solder | Not Specified | Phosphor Bronze | Gold (30.0µin) | 6 | -55 to 105 | Housing/Shell (Unthreaded) | RoHS non-compliant |
| 5-338315-2 | TE Connectivity AMP | 25 | Solder | Steel, Tin | Phosphor Bronze | Gold | 6 | -55 to 105 | Housing/Shell (Unthreaded) | ROHS3 Compliant |
| 5207828-4 | TE Connectivity AMP | 25 | Solder | Not Specified | Phosphor Bronze | Gold (30.0µin) | 6 | -55 to 105 | Housing/Shell (Unthreaded) | RoHS Compliant |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility): The NorComp 172-E25-213R011 is the most direct equivalent, sharing identical flange feature specification (board side 4-40), solder termination, and panel mount configuration. This part is ROHS3 Compliant and actively manufactured. However, note the reduced current rating (5A versus 7.5A) and narrower operating temperature range (-50°C to 100°C versus -55°C to 125°C). The TE Connectivity 2-338315-2 and 5-338315-2 offer similar current capacity (6A) and extended temperature range (-55°C to 105°C) with ROHS3 compliance, though they use housing/shell flanges rather than board-side mounting.
Secondary Substitutes: NorComp 172-E25-213R001 (unthreaded housing flange) and 172-E25-213R031 (mating-side flange) provide functional equivalency but require design accommodation for flange configuration differences. TE Connectivity 2-747708-0 delivers extended temperature range and current capacity but is RoHS non-compliant, limiting use in regulated applications. Parts 207828-3, 207828-4, and 5207828-4 from TE Connectivity offer similar electrical performance but with material and compliance variations.
Compliance Considerations: All parts share UL94 V-0 flammability rating. The L77DFBH25SOL2 main part is RoHS Compliant. NorComp substitutes are ROHS3 Compliant. TE Connectivity parts 2-338315-2, 5-338315-2, and 5207828-4 are compliant or ROHS3 compliant; parts 2-747708-0, 207828-3, and 207828-4 are RoHS non-compliant and REACH Affected, restricting use in restricted substance applications.
Frequently Asked Questions (FAQ)
Q: Can I substitute a NorComp 172-E25-213R011 for the Amphenol L77DFBH25SOL2? A: The 172-E25-213R011 shares the same position count (25), shell size (DB/B), flange type (board side 4-40), and solder termination. However, the current rating is lower (5A versus 7.5A) and the operating temperature range is narrower (-50°C to 100°C versus -55°C to 125°C). Substitution is acceptable only if the application does not exceed 5A current or require operation below -50°C or above 100°C.
Q: What is the primary difference between NorComp and TE Connectivity options? A: NorComp 172-E series parts maintain panel-mount compatibility with various flange options but operate at 5A with a -50°C to 100°C range. TE Connectivity AMPLIMITE series parts provide higher current capacity (6A) and extended temperature range (-55°C to 105°C) but use housing/shell flanges, requiring board-level design changes from the panel-mount configuration of the original part.
Q: Are all substitute parts RoHS compliant? A: No. NorComp 172-E series (all four variants) are ROHS3 Compliant. Among TE Connectivity options, 2-338315-2, 5-338315-2, and 5207828-4 are RoHS or ROHS3 Compliant. Parts 2-747708-0, 207828-3, and 207828-4 are RoHS non-compliant. Verify compliance requirements before selecting a substitute.
Q: Does the contact material difference (Copper Alloy versus Brass versus Phosphor Bronze) affect compatibility? A: All three contact materials (Copper Alloy, Brass, and Phosphor Bronze) are standard for D-Sub receptacles and maintain electrical performance for signal transmission. Material selection does not affect pin compatibility; however, contact finish specifications and plating thickness affect connector reliability and should be matched to application voltage and frequency requirements.
Q: Which substitute offers the closest electrical performance to the original L77DFBH25SOL2? A: The TE Connectivity 5-338315-2 most closely matches electrical performance with 6A current rating (versus 7.5A), extended operating temperature to 105°C, and ROHS3 compliance. However, it uses an unthreaded housing/shell flange rather than board-side panel mount, necessitating PCB layout modification.
Q: Can I use TE Connectivity parts that are RoHS non-compliant? A: RoHS non-compliant parts (2-747708-0, 207828-3, 207828-4) are restricted in applications subject to EU RoHS Directive or equivalent regulations. These parts are acceptable only in non-regulated applications or legacy systems where existing standards permit restricted substance usage. Verify regulatory requirements before substitution.
Q: How do flange feature differences affect mechanical installation? A: The original L77DFBH25SOL2 uses board-side 4-40 flange for panel mounting with board-level retention. NorComp variants offer board-side (213R011, 213R911), mating-side (213R031), and unthreaded housing (213R001) flanges. TE Connectivity parts use housing/shell flanges (M3, 4-40, or unthreaded). Mechanical installation compatibility depends on panel aperture design and board layout; flange type changes require design verification.
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