M52-5052145 Equivalent & Substitute Parts

Part Overview

The M52-5052145 is a 21-position receptacle connector manufactured by Harwin Inc., designed for board-to-board surface mount applications. This connector features 0.050" (1.27mm) pitch mating, gold-plated female socket contacts, and operates across -40°C to 105°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design and procurement requirements.

Substiute Parts

M52-5052145

Harwin Inc.In Stock: 1111M52-5052145 Datasheet

Current PartRFQ

M52-5052045

Harwin Inc.In Stock: 1963M52-5052045 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M52-5052145 is determined by the following critical parameters:

• Connector Type: Receptacle
• Contact Type: Female Socket
• Style: Board to Board
• Pitch - Mating: 0.050" (1.27mm)
• Mounting Type: Surface Mount
• Current Rating: 1A
• Operating Temperature Range: -40°C ~ 105°C
• Contact Finish - Mating: Gold
• Insulation Material: Polyamide (PA6T), Nylon 6T
• Material Flammability Rating: UL94 V-0

The M52-5052045 qualifies as a substitute based on matching all critical electrical and mechanical parameters. The primary difference is the number of positions: the substitute provides 20 positions versus the original 21 positions. This difference requires circuit-level evaluation to determine applicability for specific designs.

Parameter Comparison

Engineering Selection Recommendations

The M52-5052045 is available as an active product with full manufacturing support, whereas the M52-5052145 is obsolete. Both parts maintain identical electrical specifications, thermal ratings, and compliance certifications (ROHS3, REACH Unaffected, UL94 V-0). The substitute part is packaged in tube format and maintains equivalent mechanical and environmental performance characteristics.

Selection of the M52-5052045 as a replacement requires validation that the 20-position configuration meets circuit requirements. All other parameters—including current capacity, operating temperature range, contact materials, and regulatory compliance—are functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can the M52-5052045 directly replace the M52-5052145 in existing designs?

A: Direct replacement depends on circuit requirements. The substitute provides 20 positions instead of 21. If the design uses all 21 positions, circuit modification is necessary. If one position is unused or can be eliminated, the substitute is compatible.

Q: Are the electrical and thermal specifications identical?

A: Yes. Both parts operate at 1A current rating across -40°C to 105°C, use gold-plated phosphor bronze contacts, and maintain identical pitch (0.050"), mounting type (surface mount), and fastening mechanism (push-pull).

Q: What are the compliance differences?

A: Both parts are ROHS3 compliant, REACH unaffected, and rated UL94 V-0. Regulatory compliance is equivalent.

Q: Does packaging differ between the parts?

A: The M52-5052045 is supplied in tube packaging. Verify packaging requirements for your procurement and assembly processes.

Q: Are the physical dimensions compatible?

A: Both parts share identical insulation height (0.224"), mated stacking heights (8.5mm, 9.77mm), and board-to-board spacing. Physical compatibility is maintained.

Q: What is the primary reason for substitution?

A: The M52-5052145 is obsolete. The M52-5052045 is an active product with ongoing manufacturing support and inventory availability.