Molex 0430451421 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0430451421 is an active-status rectangular connector header designed for through-hole, right-angle board-to-cable/wire applications. This 14-position, 2-row shrouded header with 3.00mm pitch serves general purpose, automotive, industrial, medical, and telecommunications applications. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

0430451421

MolexIn Stock: 15330430451421 Datasheet

Current PartRFQ

4-794677-4

TE Connectivity AMP ConnectorsIn Stock: 14204-794677-4 Datasheet

MFR RecommendedRFQ

DML-14-A-H-T-A-SBL

Adam TechIn Stock: 857DML-14-A-H-T-A-SBL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0430451421 is determined by strict alignment of the following critical parameters:

• Connector type (Header)
• Contact type (Male Pin)
• Position count (14 positions)
• Row configuration (2 rows)
• Mating pitch (0.118" / 3.00mm)
• Row spacing (0.118" / 3.00mm)
• Mounting style (Through Hole, Right Angle)
• Shrouding configuration (Shrouded - 4 Wall)
• Termination method (Solder)
• Fastening mechanism (Locking Ramp)
• Contact shape (Square)
• Contact material (Brass)
• Contact finish (Tin on both mating and post surfaces)
• Insulation height (0.290" / 7.37mm)
• Insulation color (Black)
• Flammability rating (UL94 V-0)
• Operating temperature range (-40°C ~ 105°C)
• RoHS3 compliance status

The identified substitute parts meet these core electrical and mechanical requirements. Variations in secondary parameters such as insulation material composition, contact finish thickness, voltage rating, current rating specification method, and packaging format do not preclude functional substitution within the defined application scope.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and ROHS3 compliance. The Molex 0430451421 and TE Connectivity 4-794677-4 are supplied in tray packaging, while the Adam Tech DML-14-A-H-T-A-SBL is supplied in bulk packaging. Selection between these parts should account for voltage and current rating requirements specific to the application circuit. The Molex part specifies 600V and 8A ratings, while both substitute parts specify 250V ratings with current varying by wire gauge. For applications requiring the full 600V specification, the Molex 0430451421 is the appropriate selection. For applications operating within 250V specifications, either substitute part provides functional equivalence. Packaging format and inventory availability may influence procurement decisions based on assembly volume and supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 4-794677-4 be used as a direct replacement for the Molex 0430451421?

A: The TE Connectivity 4-794677-4 meets all critical electrical and mechanical parameters for connector header substitution, including pitch, position count, row configuration, mounting style, shrouding, termination, and fastening. However, the voltage rating differs (250V versus 600V). Substitution is valid only for applications operating within 250V specifications.

Q: What are the key differences between the Molex and Adam Tech parts?

A: The Adam Tech DML-14-A-H-T-A-SBL matches the Molex 0430451421 on all critical connector parameters. Differences include insulation material composition (thermoplastic versus LCP glass-filled), packaging format (bulk versus tray), voltage rating (250V versus 600V), and operating temperature specification (not provided for Adam Tech part). The contact post length is 0.126" (3.20mm) for Adam Tech versus 0.125" (3.18mm) for Molex, a 0.01mm variation within typical manufacturing tolerance.

Q: Are there compatibility concerns with mating connectors?

A: All three parts share identical mating pitch (0.118" / 3.00mm), row spacing (0.118" / 3.00mm), and shrouding configuration (4-wall shrouded). Mating connectors designed for the Molex 0430451421 will interface with the TE Connectivity and Adam Tech headers without mechanical incompatibility.

Q: How does packaging format affect part selection?

A: The Molex and TE Connectivity parts are supplied in tray packaging, suitable for automated assembly processes. The Adam Tech part is supplied in bulk packaging, which may require manual handling or repackaging for automated placement equipment. Packaging selection depends on assembly process requirements and volume considerations.

Q: What compliance certifications apply to all three parts?

A: All three parts are ROHS3 compliant, carry UL94 V-0 flammability ratings, and maintain MSL 1 (Unlimited) moisture sensitivity levels. These certifications are consistent across all substitute options.

Q: Can current rating differences affect substitution decisions?

A: The Molex 0430451421 specifies 8A current rating. The TE Connectivity and Adam Tech parts specify current ratings that vary by wire gauge. For applications requiring the full 8A specification independent of wire gauge, the Molex part is the appropriate selection. For applications where current is wire-gauge dependent, the substitute parts provide functional equivalence.