DCMS37P300 D-Sub Plug 37 Position Equivalent & Substitute Parts

Part Overview

The DCMS37P300 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) layout. The connector is rated for 7.5A per contact at 300V and operates across -55°C to 125°C. As an active product with 913 units in stock, equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and termination method while accounting for manufacturing variations and compliance differences.

Key Parameters

Parameter	DCMS37P300 Specification
Connector Type	D-Sub Plug, Male Pins
Number of Positions	37
Number of Rows	2
Shell Size, Connector Layout	4 (DC, C)
Mounting Type	Through Hole
Termination	Solder
Current Rating	7.5A per Contact
Voltage Rating	300V
Operating Temperature	-55°C to 125°C
Contact Material	Brass
Contact Finish	Gold
Shell Material, Finish	Steel, Yellow Cadmium Plated
Dielectric Material	Thermoplastic
Flammability Rating	UL94 V-0
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the DCMS37P300 are identified based on the following critical parameters that determine functional and mechanical compatibility:

Matching Parameters (Required for Substitution):

Connector type: D-Sub Plug with Male Pins
Position count: 37 positions
Row configuration: 2 rows
Shell size and layout: 4 (DC, C)
Mounting method: Through Hole
Termination method: Solder
Contact material: Brass
Contact finish: Gold
Flammability rating: UL94 V-0

Acceptable Variation Parameters:

Current rating: Substitute parts rated at 6A per contact are acceptable where application requirements do not exceed this limit
Voltage rating: Substitute parts rated at 125V are acceptable where application requirements do not exceed this limit
Operating temperature: Substitute parts rated -55°C to 105°C are acceptable where application requirements fall within this range
Shell finish: Steel with Tin Plated or unspecified finish acceptable
Dielectric material: Thermoplastic or Polyester acceptable
Flange feature: Housing/Shell (Unthreaded), Housing/Shell (4-40), or Mating Side Female Screwlock (4-40) acceptable

All identified substitute parts are manufactured by TE Connectivity AMP Connectors in the AMPLIMITE HD-20 or AMPLIMITE HDP-20 series and maintain the core D-Sub 37-position plug configuration with solder termination.

Parameter Comparison

Parameter	DCMS37P300	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
Series	DM HE501	AMPLIMITE HDP-20	AMPLIMITE HD-20	AMPLIMITE HD-20	AMPLIMITE HD-20	AMPLIMITE HD-20	AMPLIMITE HD-20	AMPLIMITE HD-20	AMPLIMITE HD-20	AMPLIMITE HD-20	AMPLIMITE HD-20
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	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	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
Current Rating (Amps)	7.5	6	6	6	6	6	6	6	6	6	6
Voltage Rating (V)	300	125	125	125	125	125	125	125	125	125	125
Operating Temperature	-55°C to 125°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
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
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
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
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
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)

Engineering Selection Recommendations

Compliance Considerations:

The DCMS37P300 is RoHS non-compliant. For applications requiring RoHS3 compliance, the following substitute parts are available: 2-5747705-1, 5208009-1, 5208009-3, 5745074-4, 5747375-2, 5747375-8, and 745054-4. All of these maintain the 37-position D-Sub plug configuration with solder termination and through-hole mounting.

Electrical Rating Derating:

Substitute parts are rated at 6A per contact and 125V maximum, compared to the DCMS37P300 rated at 7.5A per contact and 300V. Applications operating at or below 6A per contact and 125V are electrically compatible. Applications requiring the full 7.5A per contact or 300V rating cannot use these substitutes.

Temperature Range Consideration:

Substitute parts operate to 105°C maximum, compared to the DCMS37P300 rated to 125°C. Applications with maximum operating temperatures at or below 105°C are compatible. Applications requiring operation above 105°C cannot use these substitutes.

REACH Status Variations:

The DCMS37P300 has REACH Unaffected status. Substitute parts show varying REACH status: 208009-1 is REACH Affected; 5745074-1, 5745074-2, 5745074-4, and 5747375-8 are REACH Affected; 2-5747705-1, 5208009-1, 5208009-3, 5747375-2, and 745054-4 have REACH Unaffected or Vendor Undefined status. Applications subject to REACH regulations should select parts with REACH Unaffected status.

Packaging and Inventory:

All substitute parts are supplied in tube packaging. Current inventory levels range from 624 to 1629 units across the substitute part options, providing multiple sourcing alternatives.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part rated at 6A in an application designed for 7.5A?

A: No. The DCMS37P300 is rated at 7.5A per contact. Substitute parts rated at 6A per contact must only be used in applications where the actual current requirement does not exceed 6A per contact. Using a lower-rated part in a higher-current application creates a reliability and safety risk.

Q: What is the difference between the various flange features on substitute parts?

A: Flange features determine the mounting interface. Housing/Shell (Unthreaded) provides a basic shell mounting. Housing/Shell (4-40) includes threaded mounting holes for 4-40 fasteners. Mating Side Female Screwlock (4-40) provides screwlock coupling on the mating connector interface. All are mechanically compatible with the 37-position D-Sub plug configuration but differ in how they mount to the PCB or enclosure.

Q: Are substitute parts with Polyester dielectric material equivalent to the Thermoplastic dielectric in the DCMS37P300?

A: Both Thermoplastic and Polyester dielectric materials meet the UL94 V-0 flammability requirement and are acceptable for D-Sub connector applications. The material difference does not affect electrical compatibility or mechanical fit. Selection between them depends on application-specific environmental or regulatory requirements.

Q: What does RoHS3 Compliant mean compared to RoHS non-compliant?

A: RoHS3 Compliant indicates the part meets the Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. The DCMS37P300 is RoHS non-compliant, meaning it may contain restricted substances. For applications requiring RoHS compliance, select substitute parts marked as ROHS3 Compliant.

Q: Can I substitute a part with a lower voltage rating in a 300V application?

A: No. The DCMS37P300 is rated at 300V. Substitute parts rated at 125V maximum must only be used in applications where the actual voltage does not exceed 125V. Using a lower-rated part in a higher-voltage application creates an electrical safety risk.

Q: Are all substitute parts from the same manufacturer?

A: Yes. All substitute parts are manufactured by TE Connectivity AMP Connectors in the AMPLIMITE HD-20 or AMPLIMITE HDP-20 series. The DCMS37P300 is manufactured by Amphenol ICC (FCI) in the DM HE501 series. Both manufacturers produce industry-standard D-Sub connectors with equivalent mechanical and electrical interfaces.

Q: What is the significance of the contact finish thickness specification?

A: Contact finish thickness affects durability and wear resistance. The DCMS37P300 does not specify thickness. Substitute parts specify either Flash or unspecified thickness. Flash plating provides a thin gold layer suitable for standard applications. Thickness differences do not affect electrical compatibility for standard D-Sub connector applications.

Q: How do I determine which substitute part is best for my application?

A: Verify that your application requirements do not exceed the substitute part's electrical ratings (6A per contact, 125V maximum) and temperature range (-55°C to 105°C maximum). If your application requires 7.5A, 300V, or operation above 105°C, the DCMS37P300 or equivalent higher-rated parts must be used. For RoHS-compliant applications, select from the ROHS3 Compliant options. For REACH-regulated applications, select parts with REACH Unaffected status.

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