189-037-313R481 D-Sub Connector Equivalent & Substitute Parts

Part Overview

The 189-037-313R481 is a 37-position D-Sub stacked connector manufactured by NorComp Inc., configured as a plug with male pins and receptacle with female sockets. This connector features right-angle panel mount through-hole termination with solder attachment and is designed for signal applications requiring shielded, grounded connections. The part is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	189-037-313R481
Manufacturer	NorComp Inc.
Category	D-Sub, D-Shaped Connectors
Number of Positions	37, 37
Connector Style	D-Sub - Stacked
Connector Type	Plug, Male Pins; Receptacle, Female Sockets
Mounting Type	Panel Mount, Through Hole, Right Angle
Shell Size, Connector Layout	4 (DC, C)
Termination	Solder
Shell Material, Finish	Steel, Nickel Plated
Contact Finish	Gold, Flash Thickness
Current Rating	5A
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 189-037-313R481 is determined by strict equivalence across the following critical parameters:

Connector Configuration: 37-position D-Sub stacked format with plug (male pins) and receptacle (female sockets) pairing
Mechanical Interface: Panel mount, through-hole, right-angle orientation with shell size 4 (DC, C) layout
Electrical Characteristics: 5A current rating, signal contact type, gold-plated flash finish contacts
Termination Method: Solder attachment
Environmental Compliance: UL94 V-0 flammability rating, ROHS3 compliance, operating range -55°C to 105°C
Physical Construction: Steel shell with nickel plating, brass contacts, polyamide (PA9T) nylon 9T dielectric

The substitute part 189-037-313R571 maintains identical specifications across all critical parameters while differing only in packaging format and product status classification.

Parameter Comparison

Parameter	189-037-313R481	189-037-313R571	Match Status
Manufacturer	NorComp Inc.	NorComp Inc.	Identical
Category	D-Sub, D-Shaped Connectors	D-Sub, D-Shaped Connectors	Identical
Number of Positions	37, 37	37, 37	Identical
Connector Style	D-Sub - Stacked	D-Sub - Stacked	Identical
Connector Type	Plug, Male Pins; Receptacle, Female Sockets	Plug, Male Pins; Receptacle, Female Sockets	Identical
Mounting Type	Panel Mount, Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle	Identical
Shell Size, Connector Layout	4 (DC, C)	4 (DC, C)	Identical
Termination	Solder	Solder	Identical
Shell Material, Finish	Steel, Nickel Plated	Steel, Nickel Plated	Identical
Contact Finish	Gold, Flash	Gold, Flash	Identical
Current Rating	5A	5A	Identical
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	Identical
Material Flammability Rating	UL94 V-0	UL94 V-0	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Contact Material	Brass	Brass	Identical
Dielectric Material	Polyamide (PA9T), Nylon 9T	Polyamide (PA9T), Nylon 9T	Identical
Features	Grounding Indents, Shielded	Board Lock, Grounding Indents, Shielded	Functionally Compatible
Product Status	Obsolete	Active	Substitute Available
Packaging	Not Specified	Tray	Different

Engineering Selection Recommendations

The 189-037-313R571 is a direct functional equivalent to the 189-037-313R481 for all electrical, mechanical, and environmental applications. Selection between these parts is determined by availability and procurement requirements:

189-037-313R481: Obsolete status indicates end-of-life classification. Use only when existing inventory must be maintained or when legacy system documentation explicitly specifies this part number.

189-037-313R571: Active product status with current manufacturing support. This part is the preferred selection for new designs, system upgrades, and ongoing procurement. The addition of board lock feature provides enhanced mechanical retention without compromising electrical or thermal performance. Tray packaging is standard for production environments.

Both parts maintain identical compliance certifications (ROHS3, UL94 V-0) and operational specifications across the full temperature range (-55°C to 105°C) and current rating (5A).

Frequently Asked Questions (FAQ)

Q: Can 189-037-313R571 directly replace 189-037-313R481 in existing assemblies?

A: Yes. Both connectors are mechanically and electrically identical across all functional parameters. The board lock feature on the 189-037-313R571 provides additional mechanical stability without affecting pin configuration, contact spacing, or electrical performance.

Q: What is the difference between the two part numbers?

A: The primary differences are product status and packaging. The 189-037-313R481 is obsolete with unspecified packaging, while the 189-037-313R571 is active with tray packaging. The 189-037-313R571 includes a board lock feature for enhanced mechanical retention.

Q: Are there any compatibility concerns with the board lock feature on 189-037-313R571?

A: No. The board lock feature is a mechanical enhancement that does not affect electrical characteristics, pin layout, contact spacing, or mating interface. It is fully compatible with existing receptacle designs.

Q: What packaging format should be specified for new orders?

A: Specify 189-037-313R571 with tray packaging for production environments. This part number is actively manufactured and supported by NorComp Inc.

Q: Do both parts meet the same compliance standards?

A: Yes. Both 189-037-313R481 and 189-037-313R571 are ROHS3 compliant, UL94 V-0 rated, and REACH unaffected. Operating temperature range and current ratings are identical.

Q: Is the gold contact finish specification identical on both parts?

A: Yes. Both parts feature gold-plated contacts with flash thickness finish, providing identical electrical conductivity and corrosion resistance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message