M20-9702445 Equivalent & Substitute Parts

Part Overview

The M20-9702445 is a rectangular connector header manufactured by Harwin Inc., featuring a right-angle, through-hole design with 48 positions at 2.54mm pitch. This connector is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part serves board-to-board connection applications requiring unshrouded, solder-terminated male pin headers with push-pull fastening.

Key Parameters

Parameter	Value
Connector Type	Header, Right Angle
Contact Type	Male Pin
Number of Positions	48
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Current Rating	3A per Contact
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the M20-9702445 is determined by strict alignment with the following critical parameters:

Connector Configuration: 48-position, 2-row header at 0.100" (2.54mm) pitch with matching row spacing
Mounting & Termination: Through-hole, right-angle orientation with solder termination
Electrical Performance: 3A per contact current rating and push-pull fastening mechanism
Environmental Compliance: UL94 V-0 flammability rating and RoHS compliance status
Contact System: Male pin configuration with square contact geometry

All three substitute parts meet these core substitution criteria. Variations in contact material, contact finish specifications, and operating temperature ranges are secondary parameters that do not prevent functional substitution within the defined electrical and mechanical envelope.

Parameter Comparison

Parameter	M20-9702445 (Harwin)	77317-104-48LF (Amphenol ICC)	77317-412-48LF (Amphenol ICC)	892-70-048-20-002101 (Preci-Dip)
Connector Type	Header, Cuttable	Header, Breakaway	Header, Breakaway	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	48	48	48	48
Number of Rows	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Current Rating	3A per Contact	3A per Contact	3A per Contact	3A per Contact
Operating Temperature	-40°C ~ 105°C	-65°C ~ 130°C	-65°C ~ 130°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
Contact Material	Brass	Phosphor Bronze	Phosphor Bronze	Brass
Contact Finish - Mating	Gold	Gold, GXT™	Tin	Gold
Insulation Material	Polyamide (PA6T), Nylon 6T	Thermoplastic	Thermoplastic	Polyamide (PA), Nylon, Glass Filled
Product Status	Obsolete	Active	Active	Active

Engineering Selection Recommendations

77317-104-48LF (Amphenol ICC) and 77317-412-48LF (Amphenol ICC) are active-status alternatives with extended operating temperature ranges (-65°C ~ 130°C) compared to the original part. Both maintain UL94 V-0 compliance and RoHS certification. The primary distinction between these two Amphenol options is contact finish: 77317-104-48LF features gold-plated mating contacts with GXT™ enhancement, while 77317-412-48LF uses tin plating. Selection between these variants depends on application-specific corrosion resistance and contact wear requirements.

892-70-048-20-002101 (Preci-Dip) provides an active-status substitute with brass contact material and gold finish matching the original M20-9702445 specification. This part maintains ROHS3 compliance and UL94 V-0 rating, with an operating temperature range of -55°C ~ 125°C. The glass-filled nylon insulation material offers enhanced mechanical stability compared to standard thermoplastic alternatives.

All three substitute parts are currently in active production status, ensuring long-term availability and supply chain continuity for the obsolete M20-9702445.

Frequently Asked Questions (FAQ)

Q: Can 77317-104-48LF and 77317-412-48LF be used interchangeably with the M20-9702445?

A: Both Amphenol ICC parts meet the core substitution criteria for connector configuration, pitch, position count, mounting type, and electrical ratings. The primary difference is contact finish material. 77317-104-48LF uses gold plating with GXT™ enhancement, while 77317-412-48LF uses tin plating. Selection depends on application requirements for contact resistance and environmental exposure.

Q: What is the difference between the Amphenol ICC BERGSTIK® series and the Preci-Dip 892 series?

A: Both series meet the 48-position, 2.54mm pitch, right-angle through-hole requirements. The Amphenol ICC parts use phosphor bronze contacts with thermoplastic insulation, while the Preci-Dip 892 series uses brass contacts with glass-filled nylon insulation. The Preci-Dip option more closely matches the original M20-9702445 contact material specification.

Q: Are there compliance differences between these substitute parts?

A: All substitute parts maintain UL94 V-0 flammability rating and RoHS compliance. The M20-9702445 and 892-70-048-20-002101 are ROHS3 compliant, while the Amphenol ICC parts are RoHS compliant. Both compliance levels are acceptable for equivalent substitution.

Q: What is the operating temperature impact of selecting a substitute part?

A: The original M20-9702445 operates from -40°C to 105°C. All substitute parts offer extended temperature ranges: Amphenol ICC parts support -65°C to 130°C, and Preci-Dip supports -55°C to 125°C. These extended ranges provide design margin for applications with wider environmental requirements.

Q: How do contact finish specifications affect connector performance?

A: Contact finish affects corrosion resistance, contact wear, and mating force characteristics. Gold-plated contacts (M20-9702445, 77317-104-48LF, 892-70-048-20-002101) provide superior corrosion resistance. Tin-plated contacts (77317-412-48LF) offer cost efficiency with adequate performance in controlled environments. Selection should align with application exposure conditions.

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