M50-4701445 Equivalent & Substitute Parts

Part Overview

The M50-4701445 is a rectangular connector header manufactured by Harwin Inc., part of the Archer M50 series. This is a through-hole, vertically-mounted connector with 28 positions arranged in 2 rows at 0.050" (1.27mm) pitch. The connector features shrouded 4-wall construction with gold-plated copper alloy contacts and solder termination. The product is currently obsolete, making identification of suitable substitute components necessary for ongoing design support and board-level replacements.

Key Parameters

Parameter	Value
Manufacturer Part Number	M50-4701445
Manufacturer	Harwin Inc.
Series	Archer M50
Product Status	Obsolete
Connector Type	Header
Number of Positions	28
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
Contact Type	Male Pin
Termination	Solder
Current Rating	1A per Contact
Operating Temperature	-40°C ~ 105°C
Insulation Material	Liquid Crystal Polymer (LCP)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the M50-4701445 is determined by the following critical parameters:

Manufacturer series compatibility (Archer M50)
Connector type (Header, Board to Board)
Mounting method (Through Hole)
Pitch specification (0.050" / 1.27mm mating pitch and row spacing)
Shrouding configuration (Shrouded - 4 Wall)
Contact material and finish (Gold-plated copper alloy)
Termination method (Solder)
Electrical ratings (1A per contact minimum)
Environmental compliance (ROHS3, UL94 V-0)

The M50-4701545 qualifies as a substitute based on these parameters. The primary difference is the number of positions (30 vs. 28), which represents a higher-capacity variant within the same connector family. Both parts share identical pitch, row spacing, shrouding, contact material, termination method, and environmental ratings.

Parameter Comparison

Parameter	M50-4701445 (Main Part)	M50-4701545 (Substitute)
Manufacturer	Harwin Inc.	Harwin Inc.
Series	Archer M50	Archer M50
Product Status	Obsolete	Active
Connector Type	Header	Header
Number of Positions	28	30
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
Contact Type	Male Pin	Male Pin
Termination	Solder	Solder
Contact Length - Post	0.091" (2.30mm)	0.091" (2.30mm)
Insulation Height	0.224" (5.69mm)	0.224" (5.69mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Finish - Post	Gold	Gold
Contact Material	Copper Alloy	Copper Alloy
Insulation Material	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Insulation Color	Black	Black
Current Rating	1A per Contact	1A per Contact
Mated Stacking Heights	6mm	6mm
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The M50-4701545 is the active production substitute for the obsolete M50-4701445. Both connectors are manufactured by Harwin Inc. within the Archer M50 series and maintain identical electrical, mechanical, and environmental specifications across all critical parameters.

The M50-4701545 carries Active product status, ensuring ongoing availability and manufacturing support. Both parts meet ROHS3 compliance and UL94 V-0 flammability requirements, suitable for industrial and commercial applications.

The primary design consideration is the position count difference: the M50-4701545 provides 30 positions versus 28 positions in the original part. This higher-capacity variant accommodates expanded signal routing requirements while maintaining backward compatibility in terms of pitch, row spacing, mounting footprint, and electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the M50-4701545 be used as a direct replacement for the M50-4701445?

A: The M50-4701545 is mechanically and electrically compatible with the M50-4701445 in applications where the additional 2 positions do not create layout conflicts. Both connectors share identical pitch (0.050"), row spacing (0.050"), mounting type (through-hole), shrouding configuration, and electrical ratings. PCB layout verification is required to confirm that the increased connector length accommodates the design.

Q: What is the physical size difference between these two connectors?

A: The M50-4701545 has 2 additional positions (30 vs. 28) arranged in the same 2-row configuration at 0.050" pitch. This results in a longer connector body. Both maintain identical row spacing (0.050"), insulation height (0.224"), and mated stacking height (6mm).

Q: Are there any electrical performance differences?

A: No. Both connectors maintain identical current ratings (1A per contact), operating temperature range (-40°C to 105°C), contact material (gold-plated copper alloy), and termination method (solder).

Q: Why is the M50-4701445 obsolete?

A: The M50-4701445 has been discontinued by Harwin Inc. The M50-4701545 represents the active production alternative within the Archer M50 series.

Q: Are both parts RoHS compliant?

A: Yes. Both the M50-4701445 and M50-4701545 are ROHS3 compliant and carry UL94 V-0 flammability ratings.

Q: What packaging is available for the substitute part?

A: The M50-4701545 is supplied in Tube packaging.

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