M50-4804445 Equivalent & Substitute Parts

Part Overview

The M50-4804445 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole, right-angle board-to-board applications. This 88-position connector operates at 0.050" (1.27mm) pitch with shrouded 4-wall construction and push-pull fastening. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.050" (1.27mm)
Number of Positions	88
Number of Rows	2
Row Spacing - Mating	0.050" (1.27mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Fastening Type	Push-Pull
Termination	Solder
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 M50-4804445 is determined by strict equivalence across the following critical parameters:

Connector type (Header) and contact type (Male Pin)
Mating pitch of 0.050" (1.27mm) with 2-row configuration
Total position count of 88 with all positions loaded
Board-to-board style with right-angle, through-hole mounting
Shrouded 4-wall construction with push-pull fastening
Solder termination
Operating temperature range of -40°C ~ 105°C
Current rating of 1A
UL94 V-0 flammability compliance
ROHS3 compliance status

The SBH31-NBPB-D44-RA-BK from Sullins Connector Solutions meets all these criteria and is designated as the manufacturer-recommended substitute.

Parameter Comparison

Parameter	M50-4804445 (Harwin)	SBH31-NBPB-D44-RA-BK (Sullins)
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)
Number of Positions	88	88
Number of Rows	2	2
Row Spacing - Mating	0.050" (1.27mm)	0.050" (1.27mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Push-Pull	Push-Pull
Termination	Solder	Solder
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Current Rating	1A	1A
Material Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Contact Finish - Mating	Gold	Gold
Contact Finish - Post	Gold	Gold
Contact Material	Copper Alloy	Brass
Insulation Material	Liquid Crystal Polymer (LCP)	Polyamide (PA9T), Nylon 9T
Insulation Color	Black	Black
Contact Length - Post	0.083" (2.11mm)	0.094" (2.40mm)
Insulation Height	0.222" (5.65mm)	0.211" (5.35mm)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The SBH31-NBPB-D44-RA-BK is the appropriate substitute for the obsolete M50-4804445. Both connectors maintain identical electrical and mechanical specifications across all critical mating parameters, including pitch, position count, row configuration, and fastening mechanism.

The substitute part is currently in active production status with 785 units available in inventory, compared to the obsolete M50-4804445. Both parts carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements.

Minor variations exist in contact material (Copper Alloy versus Brass), insulation material (LCP versus Polyamide PA9T), and post contact length (0.083" versus 0.094"). These differences do not affect functional compatibility for board-to-board interconnection applications within the specified operating temperature range and current rating.

Frequently Asked Questions (FAQ)

Q: Can the SBH31-NBPB-D44-RA-BK directly replace the M50-4804445 in existing designs?

A: Yes. Both connectors share identical mating pitch (0.050"), position count (88), row configuration (2 rows), mounting style (through-hole right-angle), and fastening mechanism (push-pull). Electrical and thermal specifications are equivalent.

Q: What are the differences between these two connectors?

A: The primary differences are contact material (Copper Alloy versus Brass), insulation material (LCP versus Polyamide PA9T), and post contact length (0.083" versus 0.094"). The insulation height also differs slightly (0.222" versus 0.211"). These variations do not affect mating compatibility or performance within the specified operating parameters.

Q: Why is the M50-4804445 obsolete?

A: The M50-4804445 has been discontinued by Harwin Inc. The SBH31-NBPB-D44-RA-BK from Sullins Connector Solutions is the designated active alternative for new designs and system support.

Q: Are both parts RoHS compliant?

A: Yes. Both the M50-4804445 and SBH31-NBPB-D44-RA-BK are ROHS3 compliant and REACH unaffected.

Q: What is the packaging difference?

A: The M50-4804445 packaging information is not specified. The SBH31-NBPB-D44-RA-BK is supplied in Tray packaging.

Q: Do both connectors support the same current and temperature ratings?

A: Yes. Both connectors are rated for 1A current and operate across the temperature range of -40°C to 105°C.

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