Harwin M50-4903045 Equivalent & Substitute Parts

Part Overview

The Harwin M50-4903045 is a surface mount rectangular connector header with 60 positions at 1.27mm pitch, designed for board-to-board applications. This component features a shrouded 4-wall design with solder termination and push-pull fastening. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support, maintenance, and new design implementations where equivalent functionality is required.

Substiute Parts

M50-4903045

Harwin Inc.In Stock: 1124M50-4903045 Datasheet

Current PartRFQ

20021221-00060T4LF

Amphenol ICC (FCI)In Stock: 130320021221-00060T4LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Harwin M50-4903045 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Header
• Contact type: Male Pin
• Mating pitch: 0.050" (1.27mm)
• Number of positions: 60
• Number of rows: 2
• Row spacing: 0.050" (1.27mm)
• Style: Board to Board
• Shrouding: Shrouded - 4 Wall
• Mounting type: Surface Mount
• Termination: Solder
• Fastening type: Push-Pull
• Contact shape: Square
• Contact material: Copper Alloy
• Material flammability: UL94 V-0

The Amphenol ICC (FCI) part number 20021221-00060T4LF satisfies all mandatory parameters and is classified as an equivalent substitute. This part is from the Minitek127® 1.27mm series and maintains functional and mechanical compatibility with the original Harwin component.

Parameter Comparison

Engineering Selection Recommendations

The Amphenol ICC 20021221-00060T4LF is a direct functional equivalent to the obsolete Harwin M50-4903045. Selection of this substitute is supported by the following factors:

Product Status: The substitute part is active and in production, ensuring long-term availability and supply chain continuity compared to the obsolete original component.

Compliance & Certifications: Both parts maintain UL94 V-0 material flammability rating and equivalent RoHS compliance status. The substitute achieves RoHS Compliant status while the original is ROHS3 Compliant, both meeting current regulatory requirements.

Electrical & Mechanical Compatibility: All critical parameters including pitch, position count, row configuration, shrouding, mounting type, termination method, and fastening mechanism are identical. Contact material, shape, and finish specifications match exactly.

Operating Envelope: The substitute part provides an extended operating temperature range (-55°C ~ 125°C) compared to the original (-40°C ~ 105°C), offering improved thermal performance for demanding applications.

Moisture Sensitivity: Both parts share MSL 1 (Unlimited) rating, indicating equivalent moisture handling characteristics.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 20021221-00060T4LF be used as a direct replacement for the Harwin M50-4903045?

A: Yes. The substitute part matches all critical functional and mechanical parameters including connector type, pitch, position count, row spacing, shrouding configuration, mounting type, termination method, and fastening mechanism. Both parts are designed for identical board-to-board applications.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer, series designation, and product status. The Amphenol ICC part is currently active in production, while the Harwin part is obsolete. The substitute offers an extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 105°C) and includes a specified voltage rating of 125VAC. Insulation height differs slightly (0.220" versus 0.224"), and insulation material composition differs (Thermoplastic versus Liquid Crystal Polymer).

Q: Are there any compatibility concerns with PCB layout or footprint?

A: The mating pitch, row spacing, number of positions, and mounting type are identical between both parts. Minor differences in insulation height (0.004" difference) are within typical PCB design tolerances. Verify specific footprint requirements against your PCB design documentation.

Q: What is the packaging difference?

A: The Harwin M50-4903045 packaging is not specified in available documentation. The Amphenol ICC 20021221-00060T4LF is supplied in Tube packaging.

Q: Are both parts RoHS compliant?

A: Yes. The Harwin M50-4903045 is ROHS3 Compliant, and the Amphenol ICC 20021221-00060T4LF is RoHS Compliant. Both meet current regulatory requirements for restricted substance compliance.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions and no special storage or handling requirements.

Q: Can the substitute part handle higher temperatures than the original?

A: Yes. The Amphenol ICC substitute operates across -55°C ~ 125°C, compared to the original -40°C ~ 105°C range. This extended thermal envelope may provide advantages in high-temperature applications.