M50-4704845 Equivalent & Substitute Parts

Part Overview

The M50-4704845 is a rectangular connector header manufactured by Harwin Inc. as part of the Archer M50 series. This is a through-hole, vertically-mounted connector with 96 positions arranged in 2 rows at 0.050" (1.27mm) pitch. The connector features shrouded 4-wall construction with gold-plated square contacts and solder termination. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and component sourcing.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	96
Number of Rows	2
Pitch - Mating	0.050" (1.27mm)
Row Spacing - Mating	0.050" (1.27mm)
Mounting Type	Through Hole
Shrouding	Shrouded - 4 Wall
Termination	Solder
Fastening Type	Push-Pull
Operating Temperature	-40°C ~ 105°C
Current Rating	1A
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the M50-4704845 is determined by strict equivalence across the following critical parameters:

Connector type (Header) and contact type (Male Pin)
Position count (96) and row configuration (2 rows)
Mating pitch and row spacing (0.050" / 1.27mm)
Mounting method (Through Hole) and shrouding style (Shrouded - 4 Wall)
Termination type (Solder) and fastening mechanism (Push-Pull)
Operating temperature range (-40°C ~ 105°C)
Current rating (1A)
Flammability compliance (UL94 V-0)
RoHS3 compliance status

The substitute part SBH31-NBPB-D48-ST-BK from Sullins Connector Solutions meets all these critical parameters, enabling direct functional equivalence in applications requiring the M50-4704845.

Parameter Comparison

Parameter	M50-4704845 (Harwin)	SBH31-NBPB-D48-ST-BK (Sullins)
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	96	96
Number of Rows	2	2
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)
Row Spacing - Mating	0.050" (1.27mm)	0.050" (1.27mm)
Mounting Type	Through Hole	Through Hole
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold
Contact Finish - Post	Gold	Gold
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Current Rating	1A	1A
Material Flammability Rating	UL94 V-0	UL94 V-0
Insulation Color	Black	Black
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

The SBH31-NBPB-D48-ST-BK is a direct functional equivalent to the obsolete M50-4704845. Both connectors maintain identical electrical and mechanical specifications across all critical parameters. The Sullins part carries Active product status, ensuring ongoing availability and supply chain continuity compared to the Harwin Obsolete designation.

Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for current manufacturing and deployment. The identical UL94 V-0 flammability rating ensures equivalent performance in applications with specific material safety requirements.

Minor variations exist in contact material composition (Copper Alloy vs. Brass) and insulation material formulation (Liquid Crystal Polymer vs. Polyamide 9T), along with slight differences in post contact length (0.091" vs. 0.094") and mated stacking height (6mm vs. 5.8mm). These variations remain within acceptable tolerances for board-to-board connector applications and do not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SBH31-NBPB-D48-ST-BK directly replace the M50-4704845 in existing designs?

A: Yes. Both connectors share identical pitch (0.050" / 1.27mm), position count (96), row configuration (2 rows), mounting type (Through Hole), shrouding (Shrouded - 4 Wall), and electrical ratings (1A, -40°C ~ 105°C). The connectors are mechanically and electrically interchangeable.

Q: What are the differences between these two connector models?

A: The primary differences are contact material (Copper Alloy vs. Brass), insulation material formulation (Liquid Crystal Polymer vs. Polyamide 9T), post contact length (0.091" vs. 0.094"), and mated stacking height (6mm vs. 5.8mm). These variations do not affect functional compatibility in standard board-to-board applications.

Q: Why is the M50-4704845 listed as Obsolete?

A: The M50-4704845 has been discontinued by Harwin Inc. The SBH31-NBPB-D48-ST-BK from Sullins Connector Solutions is an Active product with equivalent specifications, providing a viable path for component sourcing and system support.

Q: Are both connectors RoHS3 compliant?

A: Yes. Both the M50-4704845 and SBH31-NBPB-D48-ST-BK are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for manufacturing and deployment.

Q: What is the packaging format for the substitute part?

A: The SBH31-NBPB-D48-ST-BK is supplied in Tray packaging, suitable for automated assembly and component handling processes.

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