Equivalent & Substitute Parts for UKZ2A331MHM

Part Overview

The UKZ2A331MHM is a 330 µF, 100 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 1000 hours at 85°C and is designed for audio applications. The product status is obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

UKZ2A331MHM

NichiconIn Stock: 1418UKZ2A331MHM Datasheet

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UCS2D331MHD

NichiconIn Stock: 4389UCS2D331MHD Datasheet

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EKXG201ELL331MMP1S

Chemi-ConIn Stock: 887EKXG201ELL331MMP1S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the UKZ2A331MHM is determined by the following critical parameters:

• Capacitance Value: 330 µF (exact match required)
• Voltage Rating: Minimum 100 V (equal or higher voltage rating is acceptable)
• Tolerance: ±20% (standard tolerance for this category)
• Package Configuration: Radial, can format with identical lead spacing (0.295" / 7.50 mm)
• Physical Dimensions: Compatible footprint with maximum height consideration
• Polarization: Polar (electrolytic capacitor type)
• Mounting: Through-hole technology

The substitute parts listed below meet or exceed these parameters while maintaining mechanical and electrical compatibility with the original UKZ2A331MHM design.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing status, providing long-term availability compared to the obsolete UKZ2A331MHM. Both substitutes are ROHS3 compliant and REACH unaffected, meeting regulatory requirements.

UCS2D331MHD (Nichicon): This substitute maintains the same manufacturer as the original part, providing design continuity. The 200 V voltage rating provides increased safety margin over the 100 V original specification. The height increase of 0.059" (1.50 mm) must be verified against PCB layout constraints. The 10000-hour lifetime at 105°C represents a significant improvement in reliability over the 1000-hour rating of the original.

EKXG201ELL331MMP1S (Chemi-Con): This substitute maintains the original height dimension of 1.398" (35.50 mm), eliminating height-related layout concerns. The 200 V voltage rating and 10000-hour lifetime at 105°C provide equivalent performance improvements to the Nichicon substitute. Manufacturer change from Nichicon to Chemi-Con requires verification of supply chain and procurement procedures.

Frequently Asked Questions (FAQ)

Q: Can I use a 200 V rated capacitor in place of a 100 V rated capacitor?

A: Yes. A higher voltage rating provides increased safety margin and does not negatively affect circuit operation. The capacitor will function correctly in applications designed for 100 V operation.

Q: Are the physical dimensions compatible with the original PCB layout?

A: Lead spacing (0.295" / 7.50 mm) and diameter (0.709" / 18.00 mm) are identical across all parts. The UCS2D331MHD has a maximum height of 1.457" (37.00 mm) compared to the original 1.398" (35.50 mm). The EKXG201ELL331MMP1S maintains the original height of 1.398" (35.50 mm). Verify clearance in your specific application.

Q: What is the difference in ripple current handling between the substitutes?

A: UCS2D331MHD is rated for 1.61 A @ 120 Hz and 3.22 A @ 100 kHz. EKXG201ELL331MMP1S is rated for 1.43 A @ 120 Hz and 3.2175 A @ 100 kHz. Both are suitable for general purpose applications.

Q: Does changing manufacturers affect reliability?

A: Both Nichicon and Chemi-Con are established manufacturers of aluminum electrolytic capacitors. Both substitute parts carry identical compliance certifications (ROHS3, REACH Unaffected) and equivalent lifetime ratings (10000 Hrs @ 105°C).

Q: Why is the original part obsolete?

A: The UKZ2A331MHM is marked as obsolete by the manufacturer. The substitute parts represent current production alternatives with improved specifications and extended availability.