ULD2W100MPD Equivalent & Substitute Parts

Part Overview

The ULD2W100MPD is a 10 µF, 450 V aluminum electrolytic capacitor in radial through-hole configuration manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in Nichicon's product portfolio. Finding equivalent substitute parts is necessary to maintain design continuity for existing applications, ensure supply chain availability, and support legacy system maintenance where this capacitor type is specified.

Substiute Parts

ULD2W100MPD

NichiconIn Stock: 770ULD2W100MPD Datasheet

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EKXF451ELL100MJ20S

Chemi-ConIn Stock: 7161EKXF451ELL100MJ20S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ULD2W100MPD is determined by strict equivalence across the following critical parameters:

• Capacitance value: 10 µF (exact match required)
• Voltage rating: 450 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime specification: 20000 Hrs @ 105°C (exact match required)
• Operating temperature range: -40°C ~ 105°C (exact match required)
• Polarization: Polar (exact match required)
• Mounting type: Through Hole (exact match required)
• Package configuration: Radial, Can (exact match required)
• Lead spacing: 0.197" (5.00 mm) (exact match required)
• Case diameter: 0.394" (10.00 mm) (exact match required)

The EKXF451ELL100MJ20S from Chemi-Con meets all these criteria and qualifies as a direct electrical and mechanical equivalent.

Parameter Comparison

Engineering Selection Recommendations

The EKXF451ELL100MJ20S is a qualified substitute for the ULD2W100MPD based on the following factors:

• Both components meet identical electrical specifications across capacitance, voltage rating, tolerance, and thermal lifetime requirements.
• Both components are ROHS3 compliant, ensuring regulatory alignment for new and existing applications.
• The EKXF451ELL100MJ20S carries Active product status, indicating ongoing manufacturer support and supply availability, whereas the ULD2W100MPD is Not For New Designs.
• Physical dimensions are compatible for through-hole PCB mounting, with the substitute part featuring a marginally reduced seated height (21.50 mm vs. 22.00 mm), which presents no functional constraint for standard board layouts.
• The substitute part demonstrates higher ripple current capability at high frequency (230 mA @ 100 kHz vs. 174.8 mA @ 100 kHz), providing enhanced performance margin in switching applications.

Frequently Asked Questions (FAQ)

Q: Can the EKXF451ELL100MJ20S be used as a direct replacement for the ULD2W100MPD in existing designs?

A: Yes. Both components share identical electrical ratings (10 µF, 450 V, ±20%, 20000 Hrs @ 105°C) and mechanical compatibility (through-hole, radial can, 5.00 mm lead spacing, 10.00 mm diameter). The 0.50 mm difference in seated height does not affect PCB assembly or circuit performance.

Q: What is the primary reason to transition from ULD2W100MPD to EKXF451ELL100MJ20S?

A: The ULD2W100MPD is classified as Not For New Designs, indicating Nichicon has discontinued active support. The EKXF451ELL100MJ20S maintains Active status with Chemi-Con, ensuring long-term supply chain stability and manufacturer support.

Q: Are there any compliance differences between these two parts?

A: Both components are ROHS3 compliant. The ULD2W100MPD is REACH Affected, while the EKXF451ELL100MJ20S is REACH Unaffected. Both carry EAR99 ECCN classification and identical HTSUS codes (8532.22.0020).

Q: Does the higher ripple current rating of the substitute part affect circuit design?

A: No. The EKXF451ELL100MJ20S provides higher ripple current capability (230 mA @ 100 kHz vs. 174.8 mA @ 100 kHz), which represents an improvement over the original specification and does not require design modification.

Q: Are there any thermal or operating condition differences?

A: No. Both components operate across the identical temperature range (-40°C ~ 105°C) and maintain the same 20000-hour lifetime specification at 105°C.