Equivalent & Substitute Parts for 150684J630WF

Part Overview

The 150684J630WF is a 0.68 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 630V DC operation with ±5% tolerance. This component features a polyester metallized dielectric in an axial through-hole package and is designed for general-purpose applications across industrial and electronic equipment.

The 150684J630WF is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and production requirements for legacy systems and equipment utilizing this capacitor specification.

Substiute Parts

150684J630WF

Cornell Dubilier Electronics (CDE)In Stock: 1121150684J630WF Datasheet

Current PartRFQ

WMF6P68K-F

Cornell Dubilier Electronics (CDE)In Stock: 899WMF6P68K-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 150684J630WF is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance value: 0.68 µF
• Voltage rating: 630V DC minimum
• Dielectric material: Polyester
• Mounting type: Through Hole Axial
• Termination style: PC Pins

Allowable Variation Parameters:

• Tolerance: May increase from ±5% to ±10% (wider tolerance acceptable for general-purpose applications)
• Physical dimensions: May vary within package constraints
• Voltage rating: May exceed 630V DC (higher ratings are backward compatible)

The WMF6P68K-F qualifies as a substitute based on matching capacitance, voltage rating, dielectric material, mounting type, and termination style. The tolerance widens to ±10%, which remains acceptable for general-purpose circuit applications where the original ±5% specification is not a critical design constraint.

Parameter Comparison

Engineering Selection Recommendations

The WMF6P68K-F is an active production substitute for the obsolete 150684J630WF. Both components are manufactured by Cornell Dubilier Electronics and maintain identical capacitance and voltage ratings with matching operating temperature ranges and compliance certifications.

The primary differences are:

Tolerance: The substitute exhibits ±10% tolerance compared to the original ±5%. This wider tolerance is acceptable in general-purpose applications where capacitance precision is not a critical design parameter.

Physical Dimensions: The WMF6P68K-F is larger (26.20mm diameter × 50.80mm length versus 17.50mm diameter × 33.00mm length). PCB layout and mechanical clearance must be verified before substitution.

Product Status: The WMF6P68K-F is in active production, ensuring long-term availability and supply chain continuity compared to the obsolete 150684J630WF.

Both components maintain ROHS3 compliance and REACH unaffected status, supporting regulatory requirements for modern manufacturing and deployment environments.

Frequently Asked Questions (FAQ)

Q: Can the WMF6P68K-F directly replace the 150684J630WF in all applications?

A: The WMF6P68K-F matches all critical electrical parameters (capacitance, voltage rating, dielectric material, operating temperature). However, physical dimensions differ significantly. PCB layout, component spacing, and mechanical clearance must be evaluated for each specific application before substitution.

Q: What is the impact of the tolerance change from ±5% to ±10%?

A: The tolerance change affects capacitance accuracy. In general-purpose applications, ±10% tolerance is acceptable. In precision circuits where capacitance value is critical to circuit performance (such as timing circuits, filters, or resonant applications), the wider tolerance may introduce unacceptable performance variation. Application-specific circuit analysis is required.

Q: Are there compliance or regulatory differences between these parts?

A: Both components are ROHS3 compliant and REACH unaffected. No regulatory or compliance barriers exist for substitution from an environmental or hazardous substance perspective.

Q: Why is the substitute part physically larger?

A: The WMF6P68K-F belongs to the active WMF series, which uses different manufacturing specifications and packaging geometry than the obsolete 150 series. Larger physical dimensions do not indicate inferior performance; they reflect current production standards for this capacitor family.

Q: Is the AC voltage rating difference significant?

A: The original part specifies 220V AC rating; the substitute does not specify an AC rating. For DC-only applications, this difference is not relevant. For AC or mixed AC/DC applications, the 630V DC rating provides adequate margin for typical AC voltage levels, but application-specific voltage analysis is required.

Q: What inventory considerations apply?

A: The 150684J630WF has 1,027 pieces in stock (obsolete status). The WMF6P68K-F has 853 pieces in stock (active production). For long-term supply requirements, the active production status of the WMF6P68K-F provides superior availability assurance.