L717DFD50P1APN D-Sub 50 Position Plug Connector Equivalent & Substitute Parts

Part Overview

The L717DFD50P1APN is a 50 position D-Sub plug connector manufactured by Amphenol ICC (Commercial Products). This right-angle solder connector features male pins in a 3-row configuration with shell size 5 (DD, D) layout. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance, repairs, and new designs requiring compatible interconnect solutions.

The connector is designed for panel mount, through-hole applications with tin-plated steel shell and gold-plated contacts. Its electrical specifications support 7.5A current rating at 300V, with operating temperature range from -55°C to 155°C.

Key Parameters

Parameter	L717DFD50P1APN
Connector Type	D-Sub Plug, Male Pins
Number of Positions	50
Number of Rows	3
Shell Size, Connector Layout	5 (DD, D)
Mounting Type	Panel Mount, Through Hole, Right Angle
Termination	Solder
Shell Material, Finish	Steel, Tin Plated
Contact Finish	Gold
Current Rating (Amps)	7.5A
Voltage Rating	300V
Operating Temperature	-55°C ~ 155°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the L717DFD50P1APN is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Connector type: D-Sub plug with male pins
Position count: 50 positions
Row configuration: 3 rows
Shell size and layout: 5 (DD, D)
Termination method: Solder
Mounting orientation: Right angle (for most applications)
Flange feature compatibility: Housing/shell unthreaded or equivalent

Secondary Compatibility Parameters:

Current rating: Minimum 5A per contact (L717DFD50P1APN rated 7.5A)
Voltage rating: Minimum 300V
Operating temperature range: Minimum -55°C to 125°C
Material flammability: UL94 V-0
RoHS compliance status

Substitutes are grouped into two categories:

Category A - Direct Right-Angle Substitutes (Preferred): DD50P564TXLF, DD50P564MTXLF, DD50P564GTXLF, DD50P565MTXLF, DDO50P565MTXLF, DDMV50P500

These maintain right-angle mounting orientation and are suitable for direct replacement in panel-mount applications.

Category B - Vertical Mounting Alternative: DDL50P564MTXLF

This connector uses vertical (straight) mounting instead of right-angle orientation. Selection requires mechanical layout verification.

Parameter Comparison

Parameter	L717DFD50P1APN	DD50P564TXLF	DD50P564MTXLF	DD50P564GTXLF	DD50P565MTXLF	DDO50P565MTXLF	DDMV50P500	DDL50P564MTXLF
Connector Type	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins
Number of Positions	50	50	50	50	50	50	50	50
Number of Rows	3	3	3	3	3	3	3	3
Shell Size, Connector Layout	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	Panel Mount, Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Vertical
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shell Material, Finish	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Yellow Cadmium Plated	Steel, Tin Plated
Contact Finish	Gold	Gold, GXT™	Gold or Gold, GXT™	Gold, GXT™	Gold, GXT™	Gold or Gold, GXT™	Gold	Gold or Gold, GXT™
Current Rating (Amps)	7.5A	5A per Contact	5A	5A per Contact	5A per Contact	5A	7.5A per Contact	5A
Voltage Rating	300V	300V	Not Specified	300V	300V	Not Specified	300V	Not Specified
Operating Temperature	-55°C ~ 155°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Material 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	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

For Direct Replacement Applications:

DD50P564TXLF is the primary recommended substitute. This connector is active in production, RoHS3 compliant, and maintains identical mechanical and electrical compatibility with the L717DFD50P1APN. The connector supports 5A per contact at 300V with operating temperature range -55°C to 125°C. The GXT™ gold contact finish provides enhanced durability compared to standard gold plating.

For Applications Requiring Higher Current Capacity:

DDMV50P500 is suitable when the original 7.5A current rating must be maintained. This connector provides 7.5A per contact rating with brass contact material and gold finish. It features a mating-side female screwlock (4-40) flange instead of unthreaded housing. Operating temperature range is -55°C to 125°C. This option is appropriate for high-current signal distribution applications.

For Vertical Mounting Configurations:

DDL50P564MTXLF accommodates vertical (straight) mounting orientation instead of right-angle. This connector is suitable only when mechanical layout permits vertical PCB mounting. It maintains 50-position, 3-row configuration with board-side M3 flange. Current rating is 5A per contact.

Compliance Considerations:

All substitute parts maintain UL94 V-0 flammability rating and RoHS compliance. DD50P564TXLF carries ROHS3 certification, indicating compliance with the most current RoHS directive revision. All substitutes are classified as active products with current manufacturing support.

Temperature Derating:

The L717DFD50P1APN operates to 155°C, while all substitute parts are rated to 125°C maximum. Applications requiring operation above 125°C require design review and alternative component selection.

Frequently Asked Questions (FAQ)

Q: Can DD50P564TXLF directly replace L717DFD50P1APN in existing designs?

A: Yes, for applications operating at or below 125°C. Both connectors share identical 50-position, 3-row D-Sub configuration with shell size 5 (DD, D), right-angle solder termination, and 300V rating. The primary difference is operating temperature range: L717DFD50P1APN extends to 155°C while DD50P564TXLF is rated to 125°C. Verify application temperature requirements before substitution.

Q: What is the difference between DD50P564TXLF and DD50P564MTXLF?

A: Both connectors share identical electrical and mechanical specifications: 50 positions, 3 rows, right-angle mounting, 5A per contact, 300V rating, and -55°C to 125°C operating range. The primary difference is flange feature: DD50P564TXLF has unthreaded housing/shell, while DD50P564MTXLF includes mounting brackets. Select based on mechanical mounting requirements.

Q: Why is DDMV50P500 listed as a substitute if it has different flange features?

A: DDMV50P500 maintains core electrical and mechanical compatibility: 50 positions, 3 rows, right-angle mounting, shell size 5 (DD, D), and solder termination. It differs in flange design (mating-side female screwlock 4-40 instead of unthreaded housing) and provides higher current capacity (7.5A per contact matching the original). It is suitable for applications where the flange difference is mechanically compatible and higher current capacity is beneficial.

Q: Is DDL50P564MTXLF compatible with existing L717DFD50P1APN installations?

A: DDL50P564MTXLF is electrically compatible but mechanically different. It uses vertical (straight) mounting instead of right-angle orientation. This connector is suitable only for new designs or retrofits where PCB layout permits vertical mounting. Existing right-angle panel-mount installations cannot accommodate this connector without mechanical redesign.

Q: What does GXT™ contact finish mean, and does it affect substitution?

A: GXT™ is an enhanced gold plating process providing improved durability and contact reliability. Connectors with GXT™ finish (DD50P564TXLF, DD50P564GTXLF, DD50P565MTXLF, DDO50P565MTXLF, DDL50P564MTXLF) are functionally compatible with the standard gold-plated L717DFD50P1APN. GXT™ finish is a performance enhancement and does not prevent substitution.

Q: Are all substitute parts RoHS compliant?

A: Yes, all listed substitute parts are RoHS compliant. DD50P564TXLF carries ROHS3 certification (most current revision). Others carry standard RoHS compliance. All meet environmental regulatory requirements for lead-free and restricted substance elimination.

Q: What is the significance of the L717DFD50P1APN being classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Amphenol ICC (Commercial Products). Substitute parts listed are all active products with current manufacturing support, ensuring long-term availability for system maintenance and new production builds. Transition to active substitute parts is recommended for new designs.

Q: Can I use DD50P564GTXLF as a substitute?

A: Yes, DD50P564GTXLF is functionally compatible. It maintains 50 positions, 3 rows, right-angle mounting, 5A per contact, 300V rating, and -55°C to 125°C operating range. It features GXT™ gold contact finish and is active in production. Packaging is bulk format. Select based on procurement and inventory requirements.

Q: What is the backset spacing difference between L717DFD50P1APN and substitute parts?

A: L717DFD50P1APN has 0.406" (10.30mm) backset spacing. Most substitute parts (DD50P564TXLF, DD50P564MTXLF, DD50P564GTXLF, DD50P565MTXLF, DDO50P565MTXLF) have 0.409" (10.40mm) backset spacing. This 0.003" (0.10mm) difference is within standard connector tolerance and does not affect mechanical or electrical compatibility in typical applications.

Q: Is contact material (brass vs. copper alloy) significant for substitution?

A: L717DFD50P1APN uses brass contacts; most substitutes use copper alloy. Both materials provide adequate electrical conductivity and contact reliability for signal applications. Brass offers slightly higher corrosion resistance in certain environments. For standard signal distribution applications, copper alloy substitutes are functionally equivalent. Applications with specific corrosion exposure requirements should specify DDMV50P500 (brass contacts).

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