Molex 0901200927 Equivalent & Substitute Parts

Part Overview

The Molex 0901200927 is a rectangular connector header designed for through-hole mounting applications. This 7-position, 2.54mm pitch connector features male pins with gold-plated mating contacts and tin-plated posts, suitable for board-to-board or cable interconnections. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are necessary when addressing design flexibility, supply chain optimization, or when the original manufacturer part becomes unavailable.

Substiute Parts

0901200927

MolexIn Stock: 10060901200927 Datasheet

Current PartRFQ

4-103239-0

TE Connectivity AMP ConnectorsIn Stock: 37784-103239-0 Datasheet

MFR RecommendedRFQ

M20-9990745

Harwin Inc.In Stock: 11701M20-9990745 Datasheet

MFR RecommendedRFQ

M20-9990746

Harwin Inc.In Stock: 13543M20-9990746 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0901200927 is determined by the following critical parameters:

Primary Matching Criteria:

• Pitch - Mating: 0.100" (2.54mm)
• Number of Positions: 7
• Number of Rows: 1
• Connector Type: Header
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Fastening Type: Push-Pull

Secondary Compatibility Factors:

• Operating Temperature Range (must encompass or match the original range)
• Material Flammability Rating: UL94 V-0
• Contact Shape: Square
• Insulation Color: Black
• Moisture Sensitivity Level: 1 (Unlimited)

The identified substitute parts meet these core electrical and mechanical parameters. Variations in contact finish specifications, insulation material composition, and connector style (breakaway vs. cuttable) do not preclude functional substitution when the primary mating and mounting characteristics align.

Parameter Comparison

Engineering Selection Recommendations

Harwin M20-9990745 and M20-9990746 are functionally equivalent substitutes for the Molex 0901200927 based on matching electrical and mechanical specifications. Both parts maintain Active product status and full RoHS3 compliance.

Key Considerations:

The Harwin M20 series connectors operate within a narrower temperature range (-40°C ~ 105°C) compared to the Molex part (-55°C ~ 125°C). Applications requiring operation below -40°C or above 105°C must retain the original Molex specification.

The Harwin parts feature cuttable connector design versus the Molex breakaway style. This distinction affects mechanical handling during assembly but does not impact electrical performance or mating compatibility.

M20-9990745 provides gold-plated mating contacts matching the original Molex finish. M20-9990746 features tin-plated mating contacts, which may be selected based on cost optimization or specific application requirements where contact finish is not a critical parameter.

Both Harwin substitutes specify 3A per contact current rating, whereas the Molex part does not provide this specification. Applications with defined current requirements should reference the Harwin current rating as a design constraint.

Frequently Asked Questions (FAQ)

Q: Can M20-9990745 and M20-9990746 be used interchangeably with the Molex 0901200927?

A: Yes, both Harwin parts are mechanically and electrically compatible substitutes. The primary difference is contact finish: M20-9990745 has gold-plated mating contacts; M20-9990746 has tin-plated mating contacts. Selection depends on application requirements and cost considerations.

Q: What is the difference between breakaway and cuttable connector styles?

A: Breakaway connectors feature pre-scored sections for mechanical separation. Cuttable connectors require cutting to individual positions. Both styles provide identical electrical and mechanical mating characteristics. The distinction affects assembly methodology only.

Q: Are there temperature limitations when substituting with Harwin parts?

A: Yes. The Harwin M20 series operates from -40°C to 105°C, while the Molex 0901200927 operates from -55°C to 125°C. Applications requiring operation outside the Harwin temperature range must use the original Molex part.

Q: Does the contact finish difference affect connector performance?

A: Contact finish affects corrosion resistance and cost. Gold plating (M20-9990745) provides superior corrosion resistance in harsh environments. Tin plating (M20-9990746) is suitable for standard applications. Both finishes support equivalent electrical performance in normal operating conditions.

Q: What is the significance of the 3A per contact current rating on Harwin parts?

A: The Harwin specification provides explicit current handling capacity. The Molex part does not specify current rating. For applications with defined current requirements, the Harwin 3A per contact rating establishes a design constraint that must be observed.

Q: Are all three parts RoHS3 compliant?

A: Yes. The Molex 0901200927 and both Harwin M20 series parts are ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing.