M20-9751542 Equivalent & Substitute Parts

Part Overview

The Harwin M20-9751542 is a rectangular connector header featuring a right-angle, through-hole mount configuration with 15 positions at 0.100" (2.54mm) pitch. This connector is classified as obsolete, making equivalent substitute parts necessary for ongoing production, maintenance, and design updates. The M20 series header is designed for board-to-board or cable applications requiring push-pull fastening and solder termination.

Key Parameters

Parameter	Value
Connector Type	Header, Cuttable
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	15
Number of Rows	1
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Contact Material	Brass
Insulation Material	Polyamide (PA6T), Nylon 6T
Operating Temperature	-40°C ~ 105°C
Current Rating	3A per Contact
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the M20-9751542 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Compatibility Criteria:

Pitch - Mating: 0.100" (2.54mm)
Number of Positions: 15
Number of Rows: 1
Mounting Type: Through Hole, Right Angle
Contact Type: Male Pin
Fastening Type: Push-Pull
Termination: Solder
Material Flammability Rating: UL94 V-0
Moisture Sensitivity Level: 1 (Unlimited)

All four substitute parts meet these core electrical and mechanical requirements. Variations exist in contact material composition, insulation material type, contact finish specifications, and regulatory compliance status, which are detailed in the parameter comparison table below.

Parameter Comparison

Parameter	M20-9751542 (Harwin)	69191-515 (Amphenol ICC)	69191-615 (Amphenol ICC)	77315-813-15LF (Amphenol ICC)	PRPC015SBAN-M71RC (Sullins)
Manufacturer	Harwin Inc.	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Sullins Connector Solutions
Series	M20	BERGSTIK® II	BERGSTIK® II	BERGSTIK®	-
Product Status	Obsolete	Active	Active	Active	Active
Connector Type	Header, Cuttable	Header	Header	Header, Breakaway	Header, Breakaway
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	15	15	15	15	15
Number of Rows	1	1	1	1	1
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Kinked Pin, Solder	Kinked Pin, Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.228" (5.80mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.225" (5.72mm)	0.230" (5.84mm)
Contact Length - Post	0.118" (3.00mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.136" (3.46mm)	0.120" (3.05mm)
Insulation Height	0.100" (2.54mm)	0.095" (2.41mm)	0.095" (2.41mm)	0.094" (2.40mm)	0.098" (2.50mm)
Contact Shape	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold
Contact Finish - Post	Tin	-	-	Tin	Gold
Contact Material	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Brass
Insulation Material	Polyamide (PA6T), Nylon 6T	-	-	Thermoplastic	Polybutylene Terephthalate (PBT)
Operating Temperature	-40°C ~ 105°C	-	-	-65°C ~ 125°C	-40°C ~ 105°C
Current Rating	3A per Contact	-	-	3A per Contact	3A per Contact
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Black
RoHS Status	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For RoHS3 Compliant Applications: Select either 77315-813-15LF (Amphenol ICC) or PRPC015SBAN-M71RC (Sullins Connector Solutions). Both parts maintain ROHS3 compliance matching the original M20-9751542. The 77315-813-15LF offers an extended operating temperature range of -65°C ~ 125°C, suitable for demanding thermal environments. The PRPC015SBAN-M71RC maintains the original operating temperature range of -40°C ~ 105°C with brass contact material identical to the M20-9751542.

For Legacy System Compatibility: The 69191-515 and 69191-615 (Amphenol ICC BERGSTIK® II series) are functionally compatible but carry RoHS non-compliant status. These parts are suitable only for applications where RoHS compliance is not required. Both use phosphor bronze contact material and kinked pin termination, differing from the original brass construction.

For Extended Temperature Range: The 77315-813-15LF supports -65°C ~ 125°C operation, exceeding the original M20-9751542 specification of -40°C ~ 105°C. This part is appropriate for applications requiring broader thermal performance.

For Identical Material Composition: The PRPC015SBAN-M71RC maintains brass contact material and matches the original operating temperature range, providing the closest material-based equivalence to the M20-9751542.

Frequently Asked Questions (FAQ)

Q: Can I use 69191-515 or 69191-615 as direct replacements for the M20-9751542?

A: These parts are mechanically and electrically compatible in terms of pitch, position count, mounting type, and fastening method. However, they are RoHS non-compliant, whereas the M20-9751542 is ROHS3 compliant. Use these substitutes only in applications where RoHS compliance is not a requirement.

Q: What is the difference between 69191-515 and 69191-615?

A: Both are Amphenol ICC BERGSTIK® II series headers with identical mechanical and electrical specifications. The primary difference is contact finish thickness on the mating surface: 69191-515 has 15.0µin (0.38µm) gold plating, while 69191-615 has 30.0µin (0.76µm) gold plating. The thicker plating on 69191-615 provides enhanced durability in high-cycle mating applications.

Q: Does the 77315-813-15LF have any advantages over the original M20-9751542?

A: Yes. The 77315-813-15LF offers an extended operating temperature range of -65°C ~ 125°C compared to the M20-9751542's -40°C ~ 105°C. It is also RoHS compliant. However, it features a breakaway connector type and uses phosphor bronze contacts instead of brass.

Q: Is the PRPC015SBAN-M71RC the closest equivalent to the M20-9751542?

A: The PRPC015SBAN-M71RC is functionally equivalent and maintains ROHS3 compliance. It uses brass contact material matching the original and operates within the same temperature range (-40°C ~ 105°C). The primary difference is the insulation material: polybutylene terephthalate (PBT) instead of polyamide (PA6T).

Q: What are the implications of contact material differences between brass and phosphor bronze?

A: Both brass and phosphor bronze are suitable for 2.54mm pitch connectors with 3A per contact current rating. Phosphor bronze offers slightly higher spring force and wear resistance, while brass provides excellent electrical conductivity. The choice depends on application-specific requirements for contact retention and durability.

Q: Are all substitute parts available in the same packaging as the M20-9751542?

A: The M20-9751542 packaging is listed as "-" (not specified). All substitute parts are available in bulk packaging. Confirm packaging requirements with your procurement department before finalizing part selection.

Q: Can I mix different substitute parts in the same assembly?

A: All substitute parts meet the core compatibility criteria for pitch, position count, mounting type, and fastening method. However, mixing parts with different contact materials, insulation materials, or operating temperature ranges may introduce inconsistencies in assembly performance. Standardize on a single substitute part number per design.

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