DDM50PN 50 Position D-Sub Plug Equivalent & Substitute Parts

Part Overview

The DDM50PN is a 50 position D-Sub plug connector manufactured by Amphenol ICC (FCI) with male pins and solder cup termination. This connector is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The DDM50PN features a 3-row configuration in shell size 5 (DD, D) with free hanging in-line mounting and gold-plated machined contacts rated for 7.5A per contact at 300V.

Key Parameters

Parameter	DDM50PN Specification
Connector Type	D-Sub Plug, Male Pins
Number of Positions	50
Number of Rows	3
Shell Size	5 (DD, D)
Mounting Type	Free Hanging (In-Line)
Termination	Solder Cup
Shell Material/Finish	Steel, Yellow Cadmium Plated
Contact Finish	Gold
Current Rating	7.5A per Contact
Voltage Rating	300V
Operating Temperature	-55°C to 155°C
Contact Form	Machined
Dielectric Material	Thermoplastic
Contact Material	Brass
Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the DDM50PN is determined by strict alignment of the following critical parameters:

Core Compatibility Parameters:

Connector type (D-Sub Plug, Male Pins)
Number of positions (50)
Number of rows (3)
Shell size (5, DD, D)
Termination method (Solder Cup)
Flange feature configuration
Mounting type

Electrical Performance Parameters:

Current rating (minimum 5A per contact acceptable for most applications; DDM50PN rated 7.5A)
Voltage rating (minimum 250V acceptable; DDM50PN rated 300V)
Contact finish (Gold required)
Contact material (Brass or Copper Alloy)

Environmental Parameters:

Operating temperature range (must encompass or match DDM50PN range of -55°C to 155°C)
Flammability rating (UL94 V-0 required)
Moisture sensitivity level

Substitute parts are grouped by mounting type and flange feature configuration, as these determine physical fit and installation compatibility. Free hanging in-line connectors (DDM50P, L717SDD50PC309, L717SDD50PVFC309, L717SDD50PVFMC309, L717SDDG50P) maintain identical mounting characteristics. Panel mount variants (171-050-102L001, 171-050-103L001, 171-050-103L011, 171-050-103L021) represent functional alternatives for applications where panel mounting is acceptable.

Parameter Comparison

Parameter	DDM50PN	DDM50P	171-050-102L001	171-050-103L001	L717SDD50PC309	L717SDD50PVFC309	L717SDD50PVFMC309	L717SDDG50P
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
Positions	50	50	50	50	50	50	50	50
Rows	3	3	3	3	3	3	3	3
Shell Size	5 (DD, D)	5 (DD, D)	5 (DD, D)	5 (DD, D)	5 (DD, D)	5 (DD, D)	5 (DD, D)	5 (DD, D)
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Panel Mount	Panel Mount	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Termination	Solder Cup	Solder Cup	Solder Cup	Solder Cup	Solder Cup	Solder Cup	Solder Cup	Solder Cup
Shell Material/Finish	Steel, Yellow Cadmium Plated	Steel, Yellow Chromate Plated Zinc	Steel, Tin Plated	Steel, Nickel Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness	Not specified	30.0µin (0.76µm)	Flash	Flash	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	Flash
Current Rating (Amps)	7.5A per Contact	5A	5A	5A	3A	3A	3A	3A
Voltage Rating	300V	Not specified	Not specified	Not specified	250V	250V	250V	250V
Contact Form	Machined	Machined	Stamped	Stamped	Stamped	Stamped	Stamped	Stamped
Dielectric Material	Thermoplastic	Diallyl Phthalate (DAP), Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled	Thermoplastic, Glass Filled	Thermoplastic, Glass Filled	Thermoplastic, Glass Filled	Thermoplastic, Glass Filled
Contact Material	Brass	Brass	Copper Alloy	Copper Alloy	Brass	Brass	Brass	Brass
Operating Temperature	-55°C to 155°C	-65°C to 125°C	-50°C to 100°C	-50°C to 100°C	-55°C to 105°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
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 non-compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Product Status	Obsolete	Active	Obsolete	Active	Active	Active	Active	Active

Engineering Selection Recommendations

For Free Hanging In-Line Mounting Applications:

DDM50P (Cinch Connectivity Solutions) provides the closest functional equivalent to DDM50PN with active product status. Both maintain machined contact form and identical mounting configuration. DDM50P operates at reduced current rating (5A versus 7.5A) and lower maximum temperature (125°C versus 155°C), requiring verification that application requirements do not exceed these limits.

L717SDD50PC309, L717SDD50PVFC309, L717SDD50PVFMC309, and L717SDDG50P (Amphenol ICC Commercial Products) are active alternatives with RoHS compliance. These parts feature stamped contacts and reduced current rating (3A), suitable for lower-power signal applications. Operating temperature ranges extend to 125°C for most variants. Flange feature variations (Housing/Shell unthreaded, Mating Side Female Screwlock, Cable Side) determine mechanical fit and must align with application requirements.

For Panel Mount Applications:

171-050-103L001 and 171-050-103L031 (NorComp Inc.) are active ROHS3 compliant alternatives with panel mount configuration. These parts feature stamped copper alloy contacts and operate within -50°C to 100°C range. Wire gauge specification (20-28 AWG) is provided. Flange feature variants (Housing/Shell unthreaded, Cable Side 4-40, Mating Side 4-40) accommodate different mechanical mounting requirements.

171-050-102L001 (NorComp Inc.) is obsolete but available in inventory. 171-050-103L011 and 171-050-103L021 are active variants with identical electrical specifications but different flange configurations.

Compliance Considerations:

DDM50PN is RoHS non-compliant. Amphenol ICC Commercial Products variants (L717 series) and NorComp 171-050-103 series provide RoHS compliant alternatives for applications requiring environmental compliance. Selection between RoHS compliant and non-compliant parts depends on regulatory requirements and system design constraints.

Frequently Asked Questions (FAQ)

Q: Can DDM50P directly replace DDM50PN in all applications?

A: DDM50P maintains identical connector geometry, mounting type, and shell size. However, current rating is reduced from 7.5A to 5A per contact, and maximum operating temperature is 125°C versus 155°C for DDM50PN. Applications operating at or near these limits require verification that DDM50P specifications are acceptable.

Q: What is the difference between free hanging in-line and panel mount variants?

A: Free hanging in-line connectors (DDM50PN, DDM50P, L717 series) are designed for cable-to-cable or cable-to-board connections without panel mounting. Panel mount variants (171-050 series) include flanges for direct panel installation. These are not interchangeable without mechanical redesign.

Q: Why do L717 series parts have lower current ratings (3A) compared to DDM50PN (7.5A)?

A: L717 series parts feature stamped contacts versus machined contacts in DDM50PN. Stamped contact geometry results in lower current carrying capacity. Applications requiring 7.5A per contact must use DDM50P or equivalent machined contact designs.

Q: Are RoHS compliant alternatives electrically equivalent to DDM50PN?

A: RoHS compliant alternatives (L717 series, 171-050-103 series) maintain electrical compatibility through identical connector type, position count, shell size, and termination method. Material composition changes (elimination of cadmium plating, use of alternative dielectric materials) do not affect electrical performance for signal applications within specified voltage and current ratings.

Q: What flange feature options are available, and how do they affect installation?

A: Flange features determine mechanical attachment points. Housing/Shell unthreaded provides basic shell protection. Cable Side and Mating Side options with threaded holes (4-40 or M3) enable screw-lock attachment. Selection depends on mechanical mounting requirements and cable strain relief specifications.

Q: Can 171-050-102L001 be used as a substitute despite obsolete status?

A: 171-050-102L001 is obsolete but currently in inventory (1125 pcs available). Use is acceptable for maintenance applications where existing stock is available. For new designs, active alternatives (171-050-103L001, 171-050-103L031) are recommended to ensure long-term supply availability.

Q: What is the significance of contact finish thickness specifications?

A: Contact finish thickness (30.0µin/0.76µm or Flash) affects contact durability and mating cycle life. Flash plating provides minimal coverage suitable for limited mating cycles. 30.0µin thickness provides enhanced durability for higher mating cycle applications. DDM50PN does not specify thickness; application requirements determine acceptable alternatives.

Q: Are there temperature range limitations when substituting DDM50PN?

A: DDM50PN operates -55°C to 155°C. Most active substitutes operate within -55°C to 125°C range. Applications requiring operation above 125°C are limited to DDM50P (-65°C to 125°C) or L717SDD50PVFC309/L717SDD50PVFMC309 (-55°C to 125°C). Panel mount alternatives (171-050 series) are limited to -50°C to 100°C.

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