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L77DBH25P1AMN D-Sub 25 Position Right Angle Solder Plug Connector
Part Overview
The L77DBH25P1AMN is a 25 position D-Sub plug connector manufactured by Amphenol ICC (Commercial Products) with male pins, right angle mounting, and solder termination. This connector is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing procurement and design applications. The connector features a DB shell size (3), board-side flange with 4-40 mounting, and is rated for 7.5A at 300V with operating temperatures from -55°C to 125°C. Current inventory of 1,130 pieces is available as new original stock.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | L77DBH25P1AMN |
| Manufacturer | Amphenol ICC (Commercial Products) |
| Category | D-Sub, D-Shaped Connectors |
| Connector Type | Plug, Male Pins |
| Number of Positions | 25 |
| Number of Rows | 2 |
| Shell Size, Connector Layout | 3 (DB, B) |
| Mounting Type | Through Hole, Right Angle |
| Termination | Solder |
| Flange Feature | Board Side (4-40) |
| Shell Material, Finish | Steel, Tin Plated |
| Contact Finish | Gold |
| Contact Finish Thickness | 8.00µin (0.203µm) |
| Current Rating (Amps) | 7.5A |
| Voltage Rating | 300V |
| Operating Temperature | -55°C ~ 125°C |
| Contact Material | Brass |
| Dielectric Material | Thermoplastic, Glass Filled |
| Material Flammability Rating | UL94 V-0 |
| RoHS Status | RoHS Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the L77DBH25P1AMN is determined by strict equivalence across the following critical parameters: connector type (plug with male pins), number of positions (25), number of rows (2), shell size (3, DB layout), mounting type (through hole, right angle), termination method (solder), and operating temperature range (-55°C to 125°C). All substitute parts must maintain these core specifications to ensure mechanical and electrical compatibility within the same circuit board footprint and mating interface.
Parametric equivalents are parts that match all critical parameters and are manufactured by the same supplier (Amphenol ICC Commercial Products). These parts differ only in product status (active versus obsolete) and packaging configuration, making them direct functional replacements.
Similar parts are manufactured by Amphenol ICC (FCI) division and share the same connector type, position count, shell size, and mounting configuration. However, these parts exhibit variations in specific parameters including flange feature design (housing/shell unthreaded versus board side 4-40), contact finish specifications (GXT™ gold flash versus standard gold plating), current rating (5A versus 7.5A), and backset spacing (0.409" versus 0.406"). These variations require engineering evaluation for application-specific compatibility.
Parameter Comparison
| Parameter | L77DBH25P1AMN | L717DBH25P1APN | L717DBH25P1AUNA196 | L717DBH25P1BPN | DB25P564CTXLF | DB25P564GTXLF |
|---|---|---|---|---|---|---|
| Manufacturer | Amphenol ICC (Commercial Products) | Amphenol ICC (Commercial Products) | Amphenol ICC (Commercial Products) | Amphenol ICC (Commercial Products) | Amphenol ICC (FCI) | Amphenol ICC (FCI) |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| Connector Type | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins |
| Number of Positions | 25 | 25 | 25 | 25 | 25 | 25 |
| Number of Rows | 2 | 2 | 2 | 2 | 2 | 2 |
| Shell Size, Connector Layout | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) | 3 (DB, B) |
| Mounting Type | Through Hole, Right Angle | Through Hole, Right Angle | Through Hole, Right Angle | Through Hole, Right Angle | Through Hole, Right Angle | Through Hole, Right Angle |
| Termination | Solder | Solder | Solder | Solder | Solder | Solder |
| Flange Feature | Board Side (4-40) | Board Side (4-40) | Board Side (4-40) | Board Side (4-40) | Housing/Shell (Unthreaded) | Housing/Shell (Unthreaded) |
| Shell Material, Finish | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated |
| Contact Finish | Gold | Gold | Gold | Gold | Gold, GXT™ | Gold, GXT™ |
| Contact Finish Thickness | 8.00µin (0.203µm) | 8.00µin (0.203µm) | 8.00µin (0.203µm) | 8.00µin (0.203µm) | Flash | Flash |
| Current Rating (Amps) | 7.5A | 7.5A | 7.5A | 7.5A | 5A | 5A per Contact |
| Voltage Rating | 300V | 300V | 300V | 300V | Not Specified | 300V |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| Contact Material | Brass | Brass | Brass | Brass | Copper Alloy | Copper Alloy |
| Dielectric Material | Thermoplastic, Glass Filled | Thermoplastic, Glass Filled | Thermoplastic, Glass Filled | Thermoplastic, Glass Filled | Thermoplastic | Thermoplastic |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 |
| RoHS Status | RoHS Compliant | RoHS Compliant | RoHS Compliant | RoHS Compliant | ROHS3 Compliant | RoHS Compliant |
| Backset Spacing | 0.406" (10.30mm) | 0.406" (10.30mm) | 0.406" (10.30mm) | 0.406" (10.30mm) | 0.409" (10.40mm) | 0.409" (10.40mm) |
| Inventory (Pcs) | 1130 | 907 | 804 | 675 | 793 | 856 |
Engineering Selection Recommendations
Parametric Equivalents (Amphenol ICC Commercial Products)
The parts L717DBH25P1APN, L717DBH25P1AUNA196, and L717DBH25P1BPN are parametric equivalents manufactured by Amphenol ICC (Commercial Products). These parts maintain identical electrical and mechanical specifications to the L77DBH25P1AMN, including 7.5A current rating, 8.00µin gold contact finish thickness, board-side 4-40 flange configuration, and 0.406" backset spacing. All three parts carry active product status and RoHS compliance certification. Selection among these three equivalents is determined by packaging requirements (Tray) and specific application needs. These parts are direct functional replacements suitable for new designs and legacy system maintenance.
Similar Parts (Amphenol ICC FCI Division)
The parts DB25P564CTXLF and DB25P564GTXLF are manufactured by Amphenol ICC (FCI) and share the same connector type, position count, shell size, and mounting configuration. These parts differ in the following parameters:
Current Rating: DB25P564CTXLF and DB25P564GTXLF are rated at 5A per contact, compared to 7.5A for the main part. Applications requiring the full 7.5A rating cannot use these substitutes.
Flange Feature: Both FCI parts feature housing/shell unthreaded design, whereas the main part and parametric equivalents feature board-side 4-40 threaded flanges. This difference affects mechanical mounting and requires board layout verification.
Contact Finish: FCI parts utilize GXT™ gold flash finish, whereas the main part specifies 8.00µin standard gold plating. Flash finish provides thinner gold coverage suitable for different contact wear profiles.
Backset Spacing: FCI parts specify 0.409" (10.40mm) backset spacing compared to 0.406" (10.30mm) for the main part. This 0.003" difference may affect mating connector alignment in tightly constrained board layouts.
Voltage Rating: DB25P564CTXLF does not specify a voltage rating, whereas DB25P564GTXLF specifies 300V matching the main part.
Selection of FCI parts requires verification that the 5A current rating meets application requirements and that the unthreaded flange design is compatible with the target board mounting scheme.
Frequently Asked Questions (FAQ)
Q: Can L717DBH25P1APN, L717DBH25P1AUNA196, and L717DBH25P1BPN be used interchangeably with L77DBH25P1AMN?
A: Yes. These three parts are parametric equivalents with identical electrical and mechanical specifications. They differ only in packaging configuration (all supplied in Tray) and product status (all active). Selection among these three is based on packaging requirements and inventory availability.
Q: What is the primary difference between the Amphenol ICC (Commercial Products) parts and the Amphenol ICC (FCI) parts?
A: The Commercial Products parts (L717DBH25P1APN, L717DBH25P1AUNA196, L717DBH25P1BPN) maintain full parametric equivalence with the original part, including 7.5A current rating and board-side 4-40 flange configuration. The FCI parts (DB25P564CTXLF, DB25P564GTXLF) have reduced current rating (5A), different flange design (unthreaded housing/shell), and different contact finish specification (GXT™ flash gold). FCI parts require engineering evaluation for application compatibility.
Q: Can DB25P564CTXLF or DB25P564GTXLF be used in applications requiring 7.5A current rating?
A: No. DB25P564CTXLF and DB25P564GTXLF are rated at 5A per contact. Applications requiring 7.5A current rating must use the parametric equivalents (L717DBH25P1APN, L717DBH25P1AUNA196, or L717DBH25P1BPN) or the original part.
Q: What does the 0.003" difference in backset spacing between the main part and FCI parts mean for board design?
A: Backset spacing defines the distance from the connector flange to the solder tail entry point. The 0.003" difference (0.406" versus 0.409") affects the connector's position relative to the board surface and mating connector alignment. Boards designed for 0.406" spacing may experience alignment issues with 0.409" spacing connectors. Board layout verification is required before substituting FCI parts.
Q: What is the significance of the GXT™ gold flash finish on FCI parts compared to the 8.00µin gold plating on the main part?
A: GXT™ gold flash finish provides a thin gold coating over the contact base material, whereas 8.00µin (0.203µm) standard gold plating provides thicker coverage. Flash finish is suitable for applications with lower contact wear cycles, while standard plating provides enhanced durability for high-cycle mating applications. Application contact cycle requirements determine which finish is appropriate.
Q: Are all substitute parts RoHS compliant?
A: Yes. The main part (L77DBH25P1AMN) and all parametric equivalents (L717DBH25P1APN, L717DBH25P1AUNA196, L717DBH25P1BPN) are RoHS Compliant. DB25P564CTXLF is ROHS3 Compliant, and DB25P564GTXLF is RoHS Compliant. All parts meet RoHS requirements.
Q: What is the difference between board-side 4-40 flange and housing/shell unthreaded flange?
A: Board-side 4-40 flange features threaded mounting holes (4-40 thread specification) on the connector flange for mechanical fastening to the circuit board. Housing/shell unthreaded flange does not include threaded mounting holes and relies on alternative mounting methods such as solder-only attachment or board-edge retention. Board mounting method must be verified before substituting parts with different flange designs.
Q: Can the L77DBH25P1AMN be restocked, or must a substitute be used?
A: The L77DBH25P1AMN is classified as obsolete. While 1,130 pieces are currently available as new original stock, long-term procurement should transition to active equivalents. The parametric equivalents L717DBH25P1APN, L717DBH25P1AUNA196, and L717DBH25P1BPN are active products suitable for ongoing procurement and new designs.
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