Rubycon 63ST155MC44532 Film Capacitor - Equivalent & Substitute Parts

Part Overview

The Rubycon 63ST155MC44532 is a 1.5 µF film capacitor rated for 63V DC with acrylic metallized dielectric construction in 1812 (4532 metric) surface mount package. This component is designed for DC link and DC filtering applications. The part is currently obsolete, making identification of compatible substitutes essential for ongoing system support and component procurement.

Substiute Parts

63ST155MC44532

RubyconIn Stock: 94963ST155MC44532 Datasheet

Current PartRFQ

63MU155MC44532

RubyconIn Stock: 94263MU155MC44532 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 63ST155MC44532 is determined by strict equivalence across the following parameters:

• Capacitance value: 1.5 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage rating: 63V DC minimum (exact match required)
• Dielectric material: Acrylic, Metallized (exact match required)
• Package: 1812 (4532 Metric) surface mount (exact match required)
• Operating temperature range: -55°C ~ 125°C (exact match required)
• Termination: Solder pads (exact match required)

The Rubycon 63MU155MC44532 meets all substitution criteria as a direct equivalent, differing only in series designation (MU vs. ST) and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The Rubycon 63MU155MC44532 is the direct substitute for the obsolete 63ST155MC44532. Both parts are manufactured by Rubycon and maintain identical electrical specifications, dielectric composition, and package dimensions. The substitute part carries Active product status, ensuring continued availability and supply chain support.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and legacy system support. The maximum seated height difference of 0.008" (0.20mm) between the two parts is within typical PCB assembly tolerances and does not affect functional performance or board layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 63MU155MC44532 be used as a direct replacement for the 63ST155MC44532?

A: Yes. Both parts share identical electrical ratings (1.5 µF, ±20%, 63V DC), dielectric material (acrylic metallized), package dimensions (1812/4532 metric), and operating temperature range (-55°C ~ 125°C). The parts differ only in series designation and product status.

Q: What is the significance of the series designation change from ST to MU?

A: The series designation indicates internal product line classification within Rubycon's PMLCAP® family. This does not affect electrical performance or mechanical compatibility. The MU series represents the current active production line.

Q: Are there any height considerations when substituting these parts?

A: The substitute part (63MU155MC44532) has a maximum seated height of 0.110" (2.80mm) compared to 0.102" (2.60mm) for the original part. This 0.008" (0.20mm) difference is within standard PCB assembly tolerances and does not impact board layout or component clearance in typical applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 63ST155MC44532 and 63MU155MC44532 are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Q: What packaging options are available for the substitute part?

A: The 63MU155MC44532 is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.