Equivalent & Substitute Parts for RFS-35V330MH3#5

Part Overview

The RFS-35V330MH3#5 is a 33 µF, 35 V aluminum electrolytic capacitor in radial, can package manufactured by Elna America as part of the RFS SILMIC II series. This component is rated for 1000 hours at 85°C and is designed for audio applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance, repair, and new design implementations where the original component is no longer available from the manufacturer.

Substiute Parts

RFS-35V330MH3#5

Elna AmericaIn Stock: 860RFS-35V330MH3#5 Datasheet

Current PartRFQ

UKZ1H330MPM

NichiconIn Stock: 1995UKZ1H330MPM Datasheet

UpgradeRFQ

EEU-FC2A330

Panasonic Electronic ComponentsIn Stock: 953EEU-FC2A330 Datasheet

SimilarRFQ

UFG1V330MEM

NichiconIn Stock: 4818UFG1V330MEM Datasheet

SimilarRFQ

UFW1V330MDD

NichiconIn Stock: 13560UFW1V330MDD Datasheet

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UKW1V330MDD

NichiconIn Stock: 7123UKW1V330MDD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RFS-35V330MH3#5 is determined by the following criteria:

Primary Substitution Parameters:

• Capacitance: 33 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Package Type: Radial, Can (exact match required)
• Mounting Type: Through Hole (exact match required)
• Lead Spacing: 0.197" (5.00mm) (exact match required for direct PCB compatibility)

Secondary Substitution Parameters (Allowable Variations):

• Voltage Rating: Equal to or greater than 35 V
• Lifetime @ Temperature: Equal to or greater than 1000 Hrs @ 85°C
• Operating Temperature Range: Equal to or greater than -40°C ~ 85°C
• Physical Dimensions: Must accommodate the original mounting footprint

Substitute parts are classified into two categories:

Upgrade Parts: Higher voltage rating or extended lifetime while maintaining identical physical dimensions and lead spacing.

Similar Parts: Identical electrical specifications and physical dimensions but from different manufacturers or series.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Identical Footprint):

The UKZ1H330MPM (Nichicon) is the primary upgrade substitute for the RFS-35V330MH3#5. This part maintains identical lead spacing (0.197" / 5.00mm), physical diameter (0.394" / 10.00mm), and height (0.492" / 12.50mm), ensuring direct PCB compatibility without layout modifications. The UKZ1H330MPM provides a higher voltage rating of 50 V while maintaining the same capacitance, tolerance, and operating temperature range. Both parts are ROHS3 compliant and rated for 1000 hours at 85°C.

Active Product Alternative:

The EEU-FC2A330 (Panasonic Electronic Components) is the only active product in the substitute list and is recommended for new designs or long-term availability requirements. This part maintains identical lead spacing, physical diameter, and height as the original RFS-35V330MH3#5. The EEU-FC2A330 offers significant performance improvements: 100 V voltage rating, extended lifetime of 3000 hours at 105°C, expanded operating temperature range (-55°C ~ 105°C), and AEC-Q200 automotive qualification. ROHS3 compliance is maintained.

Dimensional Constraint Considerations:

The UFG1V330MEM, UFW1V330MDD, and UKW1V330MDD are electrically compatible but feature different lead spacing and physical dimensions. These parts are suitable only for applications where PCB layout modifications are acceptable or where the original footprint is not a constraint.

Frequently Asked Questions (FAQ)

Q: Can the UKZ1H330MPM be used as a direct replacement for the RFS-35V330MH3#5?

A: Yes. The UKZ1H330MPM maintains identical lead spacing (5.00mm), can diameter (10.00mm), and height (12.50mm). No PCB layout modifications are required. The higher voltage rating (50 V vs. 35 V) provides additional design margin without affecting circuit operation.

Q: What is the difference between the UKZ1H330MPM and EEU-FC2A330?

A: Both parts are direct footprint replacements with identical lead spacing and physical dimensions. The primary differences are: EEU-FC2A330 has a 100 V rating (vs. 50 V), extended lifetime of 3000 hours at 105°C (vs. 1000 hours at 85°C), wider operating temperature range (-55°C ~ 105°C vs. -40°C ~ 85°C), and AEC-Q200 automotive qualification. The EEU-FC2A330 is an active product, while the UKZ1H330MPM is obsolete.

Q: Why do UFG1V330MEM, UFW1V330MDD, and UKW1V330MDD have different lead spacing?

A: These parts represent different product series from Nichicon with varying mechanical designs. UFG1V330MEM uses 2.50mm lead spacing, while UFW1V330MDD and UKW1V330MDD use 2.00mm spacing. These differences require PCB layout modifications and are suitable only when footprint constraints can be accommodated.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts, including the original RFS-35V330MH3#5, are ROHS3 compliant and REACH unaffected.

Q: Which substitute part is recommended for new designs?

A: The EEU-FC2A330 is recommended for new designs due to its active product status, extended lifetime, wider operating temperature range, and automotive qualification. This ensures long-term availability and superior performance characteristics.

Q: Can the UFW1V330MDD or UKW1V330MDD be used if PCB modification is possible?

A: Yes. Both parts are electrically compatible with the RFS-35V330MH3#5 and offer extended lifetime (2000 hours at 85°C vs. 1000 hours). However, their different lead spacing (2.00mm vs. 5.00mm) and smaller physical dimensions require PCB layout changes. These parts are suitable only when design flexibility permits such modifications.