L17DBFRB25PC309

Part Overview

The L17DBFRB25PC309 is a 25 Position D-Sub Plug connector manufactured by Amphenol ICC (Commercial Products), featuring male pins with IDC ribbon cable termination. This free-hanging, in-line mounted connector is designed for signal distribution applications requiring 5A current capacity and 250V voltage rating. The connector is currently in active production status and is RoHS Compliant with UL94 V-0 flammability certification.

Alternative equivalent parts are necessary when managing supply chain constraints, obsolescence planning, or when specific mounting requirements or operational temperature ranges differ from design specifications.

Key Parameters

Parameter	Value
Connector Type	D-Sub Plug, Male Pins
Number of Positions	25
Shell Size, Connector Layout	3 (DB, B)
Mounting Type	Free Hanging (In-Line)
Termination	IDC, Ribbon Cable
Current Rating	5A
Voltage Rating	250V
Operating Temperature Range	-25°C ~ 85°C
Shell Material, Finish	Steel, Nickel Plated
Contact Finish	Gold, 30.0µin (0.76µm)
Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution compatibility for the L17DBFRB25PC309 is determined by the following critical parameters: 25-position D-Sub connector configuration, male pin orientation, IDC ribbon cable termination, and DB/B shell size layout. The primary differentiator between the main part and substitutes is the mounting type. The L17DBFRB25PC309 features free hanging (in-line) mounting, whereas all identified substitutes from 3M (8225 series) employ panel mount configuration. This fundamental difference restricts direct mechanical substitution without redesign of mounting interface.

Additional variation parameters include current rating (main part rated 5A; substitutes rated 1A), operating temperature range (-25°C ~ 85°C for main part versus -55°C ~ 105°C for substitutes), and shell material finish (nickel plated versus tin plated). These variations must be evaluated against specific application requirements.

The Assmann WSW Components part (A-DSF 25 LPIII/Z-UNC) provides functional equivalency with free-hanging in-line mounting matching the main part, though it features a 4-40 flange, flash gold contact finish, and 3A current rating.

Parameter Comparison

Parameter	L17DBFRB25PC309	8225-6000	8225-6003	8225-6009	8225-7000	8225-7003	8225-8000	A-DSF 25 LPIII/Z-UNC
Manufacturer	Amphenol ICC	3M	3M	3M	3M	3M	3M	Assmann WSW
Connector Type	Plug, Male Pins	Plug, Male Pins	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	25	25
Shell Size Layout	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	Free Hanging (In-Line)	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Free Hanging (In-Line)
Termination	IDC, Ribbon Cable	IDC, Ribbon Cable	IDC, Ribbon Cable	IDC, Ribbon Cable	IDC, Ribbon Cable	IDC, Ribbon Cable	IDC, Ribbon Cable	IDC, Ribbon Cable
Current Rating (Amps)	5A	1A	1A	1A	1A	1A	1A	3A
Voltage Rating	250V	-	-	-	-	-	-	250V
Operating Temperature	-25°C ~ 85°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Shell Material, Finish	Steel, Nickel Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated
Contact Finish	Gold, 30.0µin	Gold, 30.0µin	Gold, 30.0µin	Gold, 30.0µin	Gold, 30.0µin	Gold, 30.0µin	Gold, 30.0µin	Gold, Flash
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
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Obsolete	Obsolete	Active	Active

Engineering Selection Recommendations

The L17DBFRB25PC309 maintains active product status and full RoHS compliance with UL94 V-0 certification, supporting continued procurement for new designs.

For applications requiring panel-mount configuration, the 3M 8225 series (8225-6000, 8225-6003, 8225-6009, 8225-8000) offers equivalent electrical and signal integrity performance. However, current rating reduction from 5A to 1A and the absence of voltage rating specification in 3M parts necessitate verification against application load requirements. The 8225-7000 and 8225-7003 carry obsolete product status and should not be selected for new designs.

The Assmann WSW A-DSF 25 LPIII/Z-UNC provides the closest functional equivalency, maintaining free-hanging in-line mounting and 250V voltage rating. The 3A current rating and flash gold contact finish require evaluation against circuit protection and environmental exposure specifications.

Substitution decisions must prioritize product status, current and voltage ratings, and mounting interface compatibility with existing printed circuit board or cable harness assemblies.

Frequently Asked Questions (FAQ)

Q: Can 3M 8225 series connectors directly replace the L17DBFRB25PC309 in existing designs? A: Direct mechanical replacement is not possible without redesign of the mounting interface. The L17DBFRB25PC309 is free-hanging (in-line) mounted, whereas 3M 8225 series parts are panel-mount only. Additionally, the current rating reduction from 5A to 1A must be verified against application power distribution requirements.

Q: What is the primary electrical difference between the main part and 3M substitutes? A: The L17DBFRB25PC309 is rated for 5A current and 250V voltage. The 3M 8225 series is rated for 1A current with no specified voltage rating. Applications requiring higher current capacity cannot use 3M parts without verification of circuit protection and load calculations.

Q: Why do substitutes have wider operating temperature ranges? A: The L17DBFRB25PC309 operates from -25°C to 85°C, while substitute parts operate from -55°C to 105°C. The wider range in substitutes does not indicate superior performance for the main part application; rather, it reflects different design specifications. Selection should be based on actual environmental exposure, not maximum rated capability.

Q: Are the obsolete 3M parts (8225-7000 and 8225-7003) available for selection? A: No. Obsolete parts should not be selected for new designs or existing production. Current product options are 8225-6000, 8225-6003, 8225-6009, 8225-8000, and the Assmann A-DSF 25 LPIII/Z-UNC.

Q: What is the difference between nickel-plated and tin-plated shell finishes? A: The L17DBFRB25PC309 uses nickel-plated steel shells, while substitute parts use tin-plated steel. Both finishes provide corrosion protection suitable for sealed environments. Tin plating is more cost-effective and is standard in the 3M 8225 series. Application-specific corrosion exposure or contact resistance requirements may influence selection.

Q: Can the Assmann WSW A-DSF 25 LPIII/Z-UNC be used as a direct substitute? A: The Assmann part maintains free-hanging in-line mounting matching the L17DBFRB25PC309 mechanical interface. However, the 3A current rating (versus 5A) and flash gold contact finish (versus 30.0µin plated gold) require verification against application specifications. The 250V voltage rating is compatible.

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