M40-3021046 Equivalent & Substitute Parts

Part Overview

The M40-3021046 is a surface mount rectangular connector header manufactured by Harwin Inc., featuring 20 positions at 1.00mm pitch with shrouded 4-wall design and solder termination. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity. Substitute parts must maintain electrical and mechanical compatibility across pitch, position count, mounting type, and termination method.

Substiute Parts

M40-3021046

Harwin Inc.In Stock: 1087M40-3021046 Datasheet

Current PartRFQ

M40-3021046R

Harwin Inc.In Stock: 4261M40-3021046R Datasheet

MFR RecommendedRFQ

5011902017

MolexIn Stock: 32765011902017 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M40-3021046 is determined by the following critical parameters:

• Pitch - Mating: 0.039" (1.00mm) — must match exactly
• Number of Positions: 20 — must match exactly
• Number of Rows: 2 — must match exactly
• Mounting Type: Surface Mount — must match exactly
• Termination: Solder — must match exactly
• Connector Type: Header — must match exactly
• Contact Type: Male Pin — must match exactly
• Shrouding: Shrouded - 4 Wall — must match exactly

The M40-3021046R (Harwin Inc., active status) and 5011902017 (Molex, active status) both satisfy these core substitution criteria. Both parts maintain the required 20-position, 2-row configuration at 1.00mm pitch with surface mount solder termination and shrouded design.

Parameter Comparison

Engineering Selection Recommendations

M40-3021046R is the primary substitute for the obsolete M40-3021046. Both parts are manufactured by Harwin Inc. within the M40 series, share identical electrical ratings (1A at 50V), identical operating temperature range (-25°C ~ 85°C), and identical insulation material (LCP, halogen free). The M40-3021046R maintains active product status with higher inventory availability (4238 units) and is supplied in Tape & Reel packaging suitable for automated assembly. Both parts carry UL94 V-0 flammability rating and ROHS3 compliance.

The 5011902017 (Molex Pico-Clasp 501190 series) is a secondary substitute that meets all core substitution criteria: 20-position, 2-row, 1.00mm pitch surface mount header with solder termination and shrouded design. However, this part exhibits differences in fastening mechanism (latch holder versus detent lock), insulation height (5.40mm versus 4.35mm), contact geometry (square versus rectangular), contact material (phosphor bronze versus copper alloy), and contact finish (gold versus tin). The 5011902017 does not specify current or voltage ratings in the provided data. Selection of the Molex alternative requires confirmation that these parameter variations are compatible with the target application.

Frequently Asked Questions (FAQ)

Q: Can M40-3021046R directly replace M40-3021046 without design modification?

A: Yes. The M40-3021046R is a direct substitute manufactured by the same supplier (Harwin Inc.) with identical pitch (1.00mm), position count (20), row configuration (2), mounting type (surface mount), termination method (solder), and electrical ratings (1A, 50V). Both parts feature identical insulation material (LCP, halogen free) and operating temperature range (-25°C ~ 85°C). No design modification is required.

Q: What are the key differences between M40-3021046R and 5011902017?

A: The primary differences are: (1) fastening mechanism — M40-3021046R uses detent lock while 5011902017 uses latch holder; (2) insulation height — M40-3021046R is 4.35mm while 5011902017 is 5.40mm; (3) contact geometry — M40-3021046R has rectangular contacts while 5011902017 has square contacts; (4) contact material — M40-3021046R uses copper alloy while 5011902017 uses phosphor bronze; (5) contact finish — M40-3021046R is tin-plated while 5011902017 is gold-plated. The 5011902017 does not specify electrical ratings in available documentation.

Q: Is the Molex 5011902017 suitable for applications requiring 1A at 50V?

A: The 5011902017 does not provide current or voltage ratings in the supplied technical data. Confirmation of electrical suitability requires direct consultation with Molex technical documentation or application engineering support.

Q: What packaging options are available for these substitutes?

A: M40-3021046R is supplied in Tape & Reel (TR) packaging. The 5011902017 is supplied in Cut Tape (CT) and Digi-Reel® packaging. Both packaging formats are suitable for automated pick-and-place assembly.

Q: Are all three parts RoHS3 compliant?

A: Yes. M40-3021046, M40-3021046R, and 5011902017 are all ROHS3 compliant with UL94 V-0 flammability rating and moisture sensitivity level 1 (unlimited).