171-037-212-021 D-Sub 37 Position Receptacle Connector

Part Overview

The 171-037-212-021 is a 37 position D-Sub receptacle connector manufactured by NorComp Inc., featuring female sockets with panel mount, through-hole solder termination. This connector is classified as active product status and serves as a standard interface component for applications requiring multi-pin signal distribution in industrial and commercial equipment.

Equivalent and substitute parts are necessary when original inventory is unavailable, when alternative manufacturers offer improved lead times, or when design requirements permit functional alternatives that meet the same electrical and mechanical specifications.

Key Parameters

Parameter	Specification
Manufacturer Part Number	171-037-212-021
Manufacturer	NorComp Inc.
Connector Style	D-Sub
Connector Type	Receptacle, Female Sockets
Number of Positions	37
Number of Rows	2
Shell Size, Connector Layout	4 (DC, C)
Mounting Type	Panel Mount, Through Hole
Termination	Solder
Shell Material, Finish	Steel, Nickel Plated
Contact Type	Signal
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 171-037-212-021 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Connector Style: D-Sub
Connector Type: Receptacle, Female Sockets
Number of Positions: 37
Number of Rows: 2
Shell Size, Connector Layout: 4 (DC, C)
Termination: Solder
Material Flammability Rating: UL94 V-0
RoHS Status: ROHS3 Compliant or RoHS Compliant

Functionally Compatible Parameters (may vary within acceptable ranges):

Mounting Type: Panel Mount or Through Hole configurations
Shell Material Finish: Steel with Nickel or equivalent protective plating
Contact Finish: Gold or equivalent conductive coating
Current Rating: 3A to 7.5A per contact
Operating Temperature: -50°C to 125°C range
Dielectric Material: Polyamide, Polybutylene Terephthalate, or Liquid Crystal Polymer

Substitute parts listed below meet all mandatory parameters and fall within acceptable ranges for functionally compatible parameters.

Parameter Comparison

Part Number	Manufacturer	Connector Type	Positions	Mounting Type	Termination	Shell Material, Finish	Current Rating (Amps)	Operating Temperature	RoHS Status	Inventory (Pcs)
171-037-212-021	NorComp Inc.	Receptacle, Female Sockets	37	Panel Mount, Through Hole	Solder	Steel, Nickel Plated	5A	-50°C ~ 100°C	ROHS3 Compliant	672
171-037-213R021	NorComp Inc.	Receptacle, Female Sockets	37	Panel Mount, Through Hole	Solder	Steel, Nickel Plated	5A	-50°C ~ 100°C	ROHS3 Compliant	838
09664516511	HARTING	Receptacle, Female Sockets	37	Through Hole	Solder	Steel	6.5A	-55°C ~ 125°C	ROHS3 Compliant	892
09664516512	HARTING	Receptacle, Female Sockets	37	Through Hole	Solder	Steel	6.5A	-55°C ~ 125°C	ROHS3 Compliant	954
09664517511	HARTING	Receptacle, Female Sockets	37	Through Hole	Solder	Steel	6.5A	-55°C ~ 125°C	ROHS3 Compliant	1011
09670374755	HARTING	Receptacle, Female Sockets	37	Through Hole	Solder	Steel	7.5A	-55°C ~ 125°C	ROHS3 Compliant	820
628-037-220-014	Mercury United Electronics, Inc.	Receptacle, Female Sockets	37	Through Hole	Solder	Steel, Nickel Plated	5A	-55°C ~ 85°C	ROHS3 Compliant	670
D37S24A6RX09LF	Amphenol ICC (FCI)	Receptacle, Female Sockets	37	Through Hole	Solder Paste	Steel, Nickel Plated	5A per Contact	-55°C	RoHS Compliant	640
SDCB-37S(55)	Hirose Electric Co Ltd	Receptacle, Female Sockets	37	Panel Mount, Through Hole	Solder	Steel, Nickel Plated	3A	Not Specified	ROHS3 Compliant	1060

Engineering Selection Recommendations

Direct Equivalent (Same Manufacturer): 171-037-213R021 from NorComp Inc. is the primary direct substitute, offering identical electrical and mechanical specifications with higher inventory availability (838 pcs vs. 672 pcs). Both parts carry ROHS3 Compliant certification and identical operating temperature ranges.

Cross-Manufacturer Alternatives (HARTING): Parts 09664516511, 09664516512, 09664517511, and 09670374755 from HARTING meet all mandatory substitution criteria. These alternatives provide extended operating temperature range (-55°C to 125°C) and higher current ratings (6.5A to 7.5A), making them suitable for applications with more demanding thermal or power requirements. All carry ROHS3 Compliant certification.

Cross-Manufacturer Alternatives (Mercury United Electronics): 628-037-220-014 provides functional equivalence with identical current rating (5A) and nickel-plated steel shell. Operating temperature range is -55°C to 85°C. ROHS3 Compliant certification applies.

Cross-Manufacturer Alternatives (Amphenol ICC/FCI): D37S24A6RX09LF from the Delta D series meets core substitution requirements with RoHS Compliant status. Termination method is Solder Paste rather than standard solder. Minimum operating temperature is -55°C with 5A per contact rating and 300V voltage rating.

Limited Current Application (Hirose): SDCB-37S(55) from Hirose Electric provides panel mount configuration matching the original part. Current rating is reduced to 3A, limiting use to lower-power signal applications. ROHS3 Compliant certification applies.

Frequently Asked Questions (FAQ)

Q: Can I substitute 171-037-213R021 for 171-037-212-021 without design changes? A: Yes. Both parts are NorComp Inc. 37-position D-Sub receptacles with identical electrical specifications, mounting configuration, and compliance certifications. The substitution requires no design modifications.

Q: What is the difference between HARTING parts 09664516511, 09664516512, and 09664517511? A: All three HARTING parts share identical electrical specifications (6.5A current rating, -55°C to 125°C operating range). Differences exist in flange features: 09664516511 and 09664517511 use Housing/Shell mounting (M3 and unthreaded respectively), while 09664516512 uses Housing/Shell (4-40) mounting. Selection depends on mechanical mounting requirements.

Q: Why does 09670374755 have a higher current rating (7.5A) than the original part (5A)? A: 09670374755 uses machined contacts rather than stamped contacts, providing improved current-carrying capacity. This part is suitable as a substitute when higher current capability is beneficial or required by application demands.

Q: Can I use D37S24A6RX09LF if my assembly process uses solder paste instead of wave soldering? A: D37S24A6RX09LF is specifically designed for solder paste termination. If your process requires standard solder wave soldering, use alternative parts with standard solder termination specifications.

Q: Is SDCB-37S(55) suitable for all applications using 171-037-212-021? A: SDCB-37S(55) is suitable only for applications where signal current does not exceed 3A per contact. The original part and most alternatives support 5A or higher, making SDCB-37S(55) a limited-use substitute for lower-power applications only.

Q: Do all substitute parts meet RoHS compliance requirements? A: All listed substitute parts carry either ROHS3 Compliant or RoHS Compliant certification, meeting current regulatory requirements for restricted substances.

Q: What packaging formats are available for these substitute parts? A: Substitute parts are available in Tray, Bulk, or unspecified packaging. Verify packaging requirements with your procurement process, as packaging format may affect handling, storage, and assembly procedures.

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