Molex 0452802203 Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Molex 0452802203 is a Micro-Fit 3.0 series rectangular connector header designed for through-hole mounting in board-to-board or cable applications. This connector features 22 positions arranged in 2 rows with 0.118" (3.00mm) pitch and shrouded 4-wall construction. The part is currently classified as obsolete, making identification of active equivalent components essential for ongoing design support and procurement.

Substiute Parts

0452802203

MolexIn Stock: 8950452802203 Datasheet

Current PartRFQ

0452802253

MolexIn Stock: 8000452802253 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Molex 0452802253 qualifies as a direct substitute for the 0452802203 based on the following critical parameters:

• Identical series designation (Micro-Fit 3.0 BMI CPI 45280)
• Matching connector type, contact type, and gender (Header, Male Pin)
• Identical position count and row configuration (22 positions, 2 rows)
• Identical mating pitch and row spacing (0.118" / 3.00mm)
• Identical mounting method (Through Hole)
• Identical shrouding configuration (Shrouded - 4 Wall)
• Identical fastening type (Push-Pull)
• Identical insulation material and flammability rating (Polyamide/Nylon Glass Filled, UL94 V-0)
• Identical contact material (Copper Alloy)
• Identical applications scope (General Purpose, Medical, Military, Telecommunications)

The primary distinction between these parts is product status and compliance certification, not functional or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0452802253 is the active production equivalent of the obsolete 0452802203. Both connectors share identical electrical and mechanical specifications within the Micro-Fit 3.0 series, ensuring direct functional compatibility in board-to-board and cable applications.

The primary advantage of selecting the 0452802253 is its active product status and ROHS3 compliance certification. The original 0452802203 is classified as RoHS non-compliant, which may present procurement and regulatory challenges in applications subject to RoHS directives.

A secondary difference exists in post contact finish: the 0452802203 features Tin-Lead plating (100.0µin / 2.54µm thickness), while the 0452802253 uses Tin plating (10.0µin / 0.25µm thickness). Both finishes are compatible with standard solder processes and do not affect mating performance.

The 0452802253 is supplied in Tray packaging, whereas packaging information for the 0452802203 is not specified. This distinction may affect handling and storage procedures but does not impact connector functionality.

Frequently Asked Questions (FAQ)

Q: Are the 0452802203 and 0452802253 mechanically interchangeable?

A: Yes. Both connectors share identical dimensions, pitch specifications, mounting methods, and shrouding configurations. They are mechanically interchangeable in all board-to-board and cable applications.

Q: What is the difference in contact finish between these parts?

A: The 0452802203 uses Tin-Lead plating on the post contacts, while the 0452802253 uses Tin plating. Both finishes are compatible with standard solder reflow and wave soldering processes. The thickness difference (100.0µin vs. 10.0µin) does not affect electrical performance or reliability.

Q: Why is the 0452802203 classified as obsolete?

A: The 0452802203 has been superseded by the 0452802253 in Molex's active product portfolio. The newer part maintains full compatibility while offering improved compliance certifications.

Q: Does the RoHS compliance difference affect compatibility?

A: No. RoHS compliance is a regulatory and procurement consideration, not a functional one. Both connectors are electrically and mechanically compatible. However, the ROHS3-compliant 0452802253 is recommended for applications subject to RoHS directives.

Q: Are there any differences in mating performance between these connectors?

A: No. Both connectors feature identical mating pitch (0.118" / 3.00mm), row spacing, contact geometry, and blind mating capabilities. Mating performance is equivalent.

Q: What packaging options are available?

A: The 0452802253 is supplied in Tray packaging. Packaging information for the 0452802203 is not specified in available documentation.

Q: Can these connectors be used in medical and military applications?

A: Yes. Both connectors are rated for General Purpose, Medical, Military, and Telecommunications applications and meet UL94 V-0 flammability requirements.