M20-9753146 Equivalent & Substitute Parts

Part Overview

The M20-9753146 is a rectangular connector header manufactured by Harwin Inc., designed for through-hole, right-angle mounting applications. This 31-position connector operates at 0.100" (2.54mm) pitch and supports 3A per contact with an operating temperature range of -40°C to 105°C. The part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement planning.

Substiute Parts

M20-9753146

Harwin Inc.In Stock: 1023M20-9753146 Datasheet

Current PartRFQ

M20-9753646

Harwin Inc.In Stock: 1668M20-9753646 Datasheet

MFR RecommendedRFQ

PREC031SBAN-M71RC

Sullins Connector SolutionsIn Stock: 988PREC031SBAN-M71RC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M20-9753146 is determined by the following critical parameters:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly for mechanical and electrical compatibility
• Mounting Type: Through Hole, Right Angle — connector orientation and board interface must be identical
• Contact Type: Male Pin — gender compatibility is required
• Current Rating: 3A per Contact — electrical capacity must meet or exceed the original specification
• Operating Temperature Range: -40°C ~ 105°C — thermal performance must cover the specified range
• Material Flammability Rating: UL94 V-0 — safety certification must be maintained
• RoHS Status: ROHS3 Compliant — regulatory compliance must be preserved

Two substitute parts meet these criteria:

1. M20-9753646 (Harwin Inc.) — Same manufacturer, same series, same pitch and mounting type. Differs in position count (36 vs. 31) but maintains all critical electrical and thermal parameters.

2. PREC031SBAN-M71RC (Sullins Connector Solutions) — Different manufacturer, identical position count (31), same pitch and mounting type. Maintains all critical electrical and thermal parameters with minor dimensional variations within tolerance.

Parameter Comparison

Engineering Selection Recommendations

M20-9753646 is the manufacturer-recommended substitute. As an active product from the same manufacturer and series, it provides direct design continuity. The 36-position configuration offers expanded capacity while maintaining identical pitch, mounting type, and electrical specifications. This part is suitable for applications where additional connector positions provide design flexibility without compromising compatibility with existing mating connectors.

PREC031SBAN-M71RC is a cross-manufacturer equivalent from Sullins Connector Solutions. With identical position count (31) and pitch (2.54mm), it provides a direct functional replacement. Minor dimensional variations in contact length and insulation height fall within standard connector tolerances. The breakaway connector type offers mechanical flexibility compared to the cuttable design of the original part. This substitute is appropriate for applications requiring alternative sourcing or where Sullins components are preferred within the supply chain.

Both substitutes maintain ROHS3 compliance and UL94 V-0 flammability rating, ensuring regulatory and safety requirements are preserved.

Frequently Asked Questions (FAQ)

Q: Can M20-9753646 be used as a direct replacement for M20-9753146?

A: M20-9753646 is functionally compatible for applications requiring 31 or fewer positions. The 36-position configuration accommodates the original 31-position requirement while providing additional capacity. All critical parameters—pitch, mounting type, current rating, and operating temperature—are identical. The connector can be used with existing mating components designed for 0.100" (2.54mm) pitch headers.

Q: What is the difference between "Cuttable" and "Breakaway" connector types?

A: Cuttable connectors allow individual pins to be separated by cutting the connector body, providing design flexibility for custom pin configurations. Breakaway connectors feature pre-scored sections that allow individual pins or groups of pins to be separated by hand or simple mechanical action. Both types maintain the same electrical and mechanical interface when fully assembled.

Q: Are there dimensional compatibility concerns when substituting PREC031SBAN-M71RC?

A: Contact length and insulation height variations between PREC031SBAN-M71RC and M20-9753146 are minimal (0.002" to 0.004" differences). These variations fall within standard connector manufacturing tolerances and do not affect mating compatibility with standard 0.100" (2.54mm) pitch receptacles. The insulation material difference (PBT vs. Nylon 6T) does not impact electrical or thermal performance within the specified operating range.

Q: Why is the original M20-9753146 marked as obsolete?

A: Obsolete status indicates the part is no longer in active production. M20-9753646 from the same manufacturer and series is the recommended replacement, offering continued design support and active inventory availability.

Q: Can these substitutes be used interchangeably in existing designs?

A: Yes, for applications using 31 or fewer positions. Both substitutes maintain the same pitch (2.54mm), mounting type (through-hole right-angle), contact type (male pin), current rating (3A per contact), and operating temperature range (-40°C to 105°C). Existing PCB layouts and mating connectors designed for M20-9753146 are compatible with both substitute parts.

Q: What compliance certifications are maintained across all three parts?

A: All three parts maintain ROHS3 compliance and UL94 V-0 flammability rating. Moisture sensitivity level is 1 (Unlimited) for all parts, indicating no special handling requirements during storage or assembly.