DCM37P343 Equivalent & Substitute Parts

Part Overview

The DCM37P343 is a 37-position D-Sub plug connector manufactured by Amphenol ICC (FCI) in the DM HE501 series. This through-hole solder termination connector features male pins with a 2-row configuration in shell size 4 (DC, C) and is designed for signal applications in harsh environments. The part is currently active in production with 859 units in stock.

Substitute parts are necessary when the original DCM37P343 becomes unavailable, when alternative compliance requirements must be met, or when design specifications allow for compatible alternatives from established manufacturers. TE Connectivity AMP Connectors offers multiple equivalent options within the AMPLIMITE HD-20 and AMPLIMITE HDP-20 series that maintain core electrical and mechanical compatibility.

Key Parameters

Parameter	DCM37P343 Specification
Connector Type	Plug, Male Pins
Number of Positions	37
Number of Rows	2
Shell Size, Connector Layout	4 (DC, C)
Mounting Type	Through Hole
Termination	Solder
Contact Type	Signal
Material Flammability Rating	UL94 V-0
Contact Material	Brass
Contact Finish	Gold
Operating Temperature Range	-55°C ~ 125°C
Voltage Rating	300V
Current Rating	7.5A
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the DCM37P343 is determined by the following mandatory parameters:

Connector Type: Must be Plug with Male Pins
Position Count: Must be 37 positions
Row Configuration: Must be 2 rows
Shell Size: Must be 4 (DC, C)
Mounting Type: Must be Through Hole
Termination Method: Must be Solder
Contact Material: Must be Brass
Contact Finish: Must be Gold
Flammability Rating: Must be UL94 V-0
Moisture Sensitivity Level: Must be 1 (Unlimited)

All substitute parts listed below meet these core requirements. Variations in shell material finish, flange feature design, dielectric material, and compliance certifications do not prevent substitution when the above parameters are identical. The substitute parts are grouped by their base product numbers and specific flange configurations.

Parameter Comparison

Parameter	DCM37P343	2-5747705-1	208009-1	5208009-1	5208009-3	5745074-1	5745074-2	5745074-4	5747375-2	5747375-8	745054-4
Manufacturer	Amphenol ICC (FCI)	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP
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	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins
Number of Positions	37	37	37	37	37	37	37	37	37	37	37
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
Shell Size, Connector Layout	4 (DC, C)	4 (DC, C)	4 (DC, C)	4 (DC, C)	4 (DC, C)	4 (DC, C)	4 (DC, C)	4 (DC, C)	4 (DC, C)	4 (DC, C)	4 (DC, C)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Contact Type	Signal	Signal	Signal	Signal	Signal	Signal	Signal	Signal	Signal	Signal	Signal
Contact Material	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
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	UL94 V-0	UL94 V-0	UL94 V-0
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Voltage Rating	300V	125V	125V	125V	125V	125V	125V	125V	125V	125V	125V
Current Rating	7.5A	6A	6A	6A	6A	6A	6A	6A	6A	6A	6A
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical compatibility with the DCM37P343 across core parameters. Selection among substitutes should be based on the following criteria:

RoHS Compliance Requirements: If RoHS3 compliance is mandated, select from 2-5747705-1, 5208009-1, 5208009-3, 5745074-4, 5747375-2, 5747375-8, or 745054-4. If RoHS compliance is not required, 208009-1 remains available. The original DCM37P343 is RoHS non-compliant.

Operating Temperature Considerations: The DCM37P343 operates to 125°C, while all substitute parts operate to 105°C maximum. Applications requiring operation above 105°C cannot use these substitutes.

Electrical Rating Derating: Substitute parts are rated at 6A and 125V compared to the DCM37P343 at 7.5A and 300V. Applications operating at or near the original ratings require design review.

Flange Feature Variations: Substitutes are available with three flange configurations: Housing/Shell (Unthreaded), Mating Side Female Screwlock (4-40), and Housing/Shell (4-40). Flange selection depends on mechanical mounting requirements and mating interface specifications.

Packaging and Inventory: All substitute parts are supplied in tube packaging with active inventory ranging from 624 to 1629 units, compared to the DCM37P343 supplied in trays with 859 units in stock.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a lower voltage rating (125V vs. 300V)? A: Substitution is electrically valid only if your application operates at or below 125V. If your design requires 300V rating, the DCM37P343 or equivalent 300V-rated connector must be used.

Q: What is the difference between the flange features listed for substitute parts? A: Flange features determine the mechanical mounting interface. Housing/Shell (Unthreaded) provides a basic shell without threaded mounting holes. Mating Side Female Screwlock (4-40) includes threaded holes on the mating face for screw-lock retention. Housing/Shell (4-40) includes threaded holes on the shell body. Select based on your mechanical assembly requirements.

Q: Are all substitute parts pin-compatible with the DCM37P343? A: Yes. All substitute parts maintain the same 37-position, 2-row configuration in shell size 4 (DC, C) with identical pin spacing and contact arrangement.

Q: Why do substitute parts have lower current ratings (6A vs. 7.5A)? A: Current rating differences reflect design variations between manufacturers. If your application requires 7.5A, verify that substitute parts at 6A rating meet your actual current requirements through design analysis.

Q: What is the significance of RoHS compliance status? A: RoHS3 compliant parts meet European Union Restriction of Hazardous Substances regulations. If your application or market requires RoHS compliance, select from the compliant options listed. Non-compliant parts may not be acceptable for certain end-use applications or geographic markets.

Q: Can I mix DCM37P343 and substitute parts in the same assembly? A: Yes, provided your application electrical and mechanical specifications fall within the operating ranges of both the original and substitute parts. Ensure voltage, current, and temperature requirements are met by all parts used.

Q: What packaging format do substitute parts use? A: All substitute parts are supplied in tube packaging, compared to the DCM37P343 supplied in trays. Verify that your procurement and assembly processes accommodate tube packaging.

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