680-044-113R021 D-Sub High Density Connector Equivalent & Substitute Parts

Part Overview

The 680-044-113R021 is a 44-position D-Sub high-density plug connector manufactured by NorComp Inc. in the Seal-D 680 series. This connector features male pins, panel mount through-hole termination, and is designed for signal applications with IP66 ingress protection. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system maintenance, repairs, and legacy equipment support.

Key Parameters

Parameter	Value
Connector Type	D-Sub, High Density Plug, Male Pins
Number of Positions	44
Number of Rows	3
Shell Size / Layout	3 (DB, B) High Density
Mounting Type	Panel Mount, Through Hole
Termination	Solder
Current Rating	5A
Operating Temperature	-50°C ~ 100°C
Shell Material / Finish	Steel, Nickel Plated
Contact Finish	Gold, Flash
Ingress Protection	IP66 - Dust Tight, Water Resistant
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 680-044-113R021 is determined by the following critical parameters:

Connector Configuration: 44-position D-Sub, high-density, male pins plug
Physical Interface: Panel mount, through-hole solder termination
Shell Geometry: 3-row (DB, B) high-density layout
Electrical Performance: 5A current rating, signal contact type
Environmental Compliance: RoHS3 compliance, operating temperature range

Substitute parts must maintain identical or compatible values across these parameters to ensure mechanical fit, electrical performance, and regulatory compliance. The following parts meet these substitution criteria:

Active Status Substitute:

180-M44-113R021 (NorComp Inc., M Series) — Active product with extended operating temperature range

Mercury United Electronics 637 Series Substitutes:

637-044-230-041, 637-044-230-042, 637-044-230-043, 637-044-230-046, 637-044-230-047, 637-044-230-048
637-044-330-041, 637-044-330-042, 637-044-330-043

All listed substitutes maintain the 44-position, high-density D-Sub plug configuration with panel mount through-hole termination and 5A current rating.

Parameter Comparison

Parameter	680-044-113R021	180-M44-113R021	637-044-230-041	637-044-230-042	637-044-230-043	637-044-230-046	637-044-230-047	637-044-230-048	637-044-330-041	637-044-330-042	637-044-330-043
Manufacturer	NorComp Inc.	NorComp Inc.	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.
Connector Type	D-Sub HD Plug, Male Pins	D-Sub HD 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	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins
Number of Positions	44	44	44	44	44	44	44	44	44	44	44
Number of Rows	3	3	3	3	3	3	3	3	3	3	3
Shell Size / Layout	3 (DB, B) HD	3 (DB, B) HD	3 (DB, B)	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	Panel Mount, Through Hole	Panel Mount, Through Hole	Vertical, Through Hole	Vertical, Through Hole	Vertical, Through Hole	Vertical, Through Hole	Vertical, Through Hole	Vertical, Through Hole	Vertical, Through Hole	Vertical, Through Hole	Vertical, Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Current Rating (Amps)	5A	5A	5A	5A	5A	5A	5A	5A	5A	5A	5A
Shell Material / Finish	Steel, Nickel Plated	Steel, Nickel Plated	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified
Contact Finish	Gold, Flash	Gold, Flash	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified
Operating Temperature	-50°C ~ 100°C	-50°C ~ 125°C	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified
Product Status	Obsolete	Active	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified

Engineering Selection Recommendations

Primary Recommendation: 180-M44-113R021

The 180-M44-113R021 is the preferred substitute for the obsolete 680-044-113R021. Both parts are manufactured by NorComp Inc. and maintain identical connector configuration, pin count, shell geometry, and electrical ratings. The 180-M44-113R021 offers the following advantages:

Active product status with ongoing availability
Extended operating temperature range (-50°C ~ 125°C vs. -50°C ~ 100°C)
ROHS3 compliance maintained
Identical 5A current rating and solder termination
Shielded feature for enhanced EMI protection

Secondary Recommendations: Mercury United Electronics 637 Series

The Mercury United Electronics 637 series connectors (637-044-230-041 through 637-044-330-043) provide functional equivalence for 44-position D-Sub plug applications. These parts maintain the critical electrical and mechanical parameters:

44-position, 3-row D-Sub configuration
5A current rating
Solder termination
Through-hole mounting

Selection among the 637 series variants should be based on specific mounting orientation requirements (vertical vs. panel mount) and availability. All listed 637 series parts maintain sufficient inventory for production and service applications.

Frequently Asked Questions (FAQ)

Q: Can the 180-M44-113R021 directly replace the 680-044-113R021?

A: Yes. Both connectors share identical 44-position, high-density D-Sub plug configuration, 3-row layout, 5A current rating, and solder termination. The 180-M44-113R021 is the direct NorComp equivalent with active product status.

Q: What is the difference between panel mount and vertical mounting in the 637 series?

A: Panel mount connectors are designed for perpendicular board-to-panel installation, while vertical mounting positions the connector parallel to the PCB. The mounting designation affects physical orientation and board layout compatibility. Verify your application's mounting requirements before selection.

Q: Are the Mercury 637 series connectors RoHS3 compliant?

A: RoHS compliance status for the 637 series is not specified in the provided data. Confirm RoHS3 compliance requirements with the manufacturer or supplier before final selection if regulatory compliance is mandatory for your application.

Q: Does the extended temperature range of the 180-M44-113R021 affect compatibility?

A: No. The extended operating range (-50°C ~ 125°C) of the 180-M44-113R021 is a performance enhancement that maintains full backward compatibility with the original 680-044-113R021 specification (-50°C ~ 100°C).

Q: What inventory levels are available for these substitute parts?

A: The 180-M44-113R021 has 763 units in stock. Mercury 637 series inventory ranges from 686 to 1,149 units across the listed variants. Verify current availability with your supplier for production quantities.

Q: Can I use the 637 series connectors in applications requiring IP66 ingress protection?

A: IP66 rating is specified only for the 680-044-113R021. The 637 series ingress protection rating is not provided in the available data. If IP66 protection is required, confirm this specification with the manufacturer before substitution.

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