Equivalent & Substitute Parts for UVR2AR33MDD

Part Overview

The UVR2AR33MDD is a 0.33 µF, 100 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The UVR series has been superseded, requiring engineers to identify compatible alternatives that maintain electrical and mechanical compatibility with existing circuit designs.

Substiute Parts

UVR2AR33MDD

NichiconIn Stock: 2646UVR2AR33MDD Datasheet

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UKL2AR33KDD

NichiconIn Stock: 1851UKL2AR33KDD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the UVR2AR33MDD is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 0.33 µF (exact match required)
• Voltage Rating: 100 V (minimum requirement; higher ratings acceptable)
• Polarization: Polar (aluminum electrolytic, non-interchangeable with non-polar types)
• Lead Spacing: 0.079" (2.00 mm) (PCB footprint compatibility)
• Package Type: Radial, Can (mechanical fit and mounting compatibility)
• Mounting Type: Through Hole (circuit board assembly method)
• Operating Temperature Range: -40°C ~ 85°C (functional envelope)
• Lifetime Rating: 2000 Hrs @ 85°C (reliability specification)

The UKL2AR33KDD qualifies as a direct substitute based on matching all critical parameters. The primary difference is tolerance specification (±10% versus ±20%), which represents an upgrade in capacitance accuracy without affecting electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The UKL2AR33KDD is a qualified substitute for the UVR2AR33MDD based on electrical and mechanical equivalence. Both components are ROHS3 compliant and maintain identical voltage, capacitance, ripple current, and thermal specifications. The UKL2AR33KDD offers improved tolerance (±10% versus ±20%), which may provide tighter capacitance accuracy in applications requiring stricter component specifications.

The height difference of 0.020" (0.50 mm) between the two parts is within typical PCB clearance tolerances for through-hole radial capacitors and does not present a mechanical constraint for standard circuit board layouts.

Both parts are classified as obsolete. Component selection should prioritize current inventory availability and long-term supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can the UKL2AR33KDD replace the UVR2AR33MDD in existing designs?

A: Yes. The UKL2AR33KDD is electrically and mechanically compatible. Both components share identical capacitance (0.33 µF), voltage rating (100 V), lead spacing (2.00 mm), and package type (radial, can). The UKL2AR33KDD features improved tolerance (±10%), which is a functional upgrade.

Q: What is the significance of the tolerance difference between these parts?

A: The UVR2AR33MDD has ±20% tolerance, while the UKL2AR33KDD has ±10% tolerance. This means the UKL2AR33KDD maintains capacitance value within a tighter range. For applications with strict capacitance requirements, the UKL2AR33KDD provides superior accuracy.

Q: Are there any height clearance issues when substituting these parts?

A: The UKL2AR33KDD is 0.020" (0.50 mm) shorter than the UVR2AR33MDD. This difference is negligible for standard through-hole PCB designs and does not create mechanical interference issues.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the UVR2AR33MDD and UKL2AR33KDD are ROHS3 compliant and REACH unaffected, meeting equivalent environmental and regulatory requirements.

Q: Why are both parts classified as obsolete?

A: Both the UVR and UKL series from Nichicon have been discontinued. Designers requiring 0.33 µF, 100 V radial aluminum electrolytic capacitors should evaluate current production alternatives from active product lines.