Equivalent & Substitute Parts for UDB1H330MHM

Part Overview

The UDB1H330MHM is a 33 µF, 50 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 part is currently active in production. Alternative equivalent parts may be required due to inventory availability, design phase transitions, or specific application requirements where extended lifetime ratings or different physical dimensions are beneficial.

Substiute Parts

UDB1H330MHM

NichiconIn Stock: 836UDB1H330MHM Datasheet

Current PartRFQ

UVP1H330MPD

NichiconIn Stock: 2487UVP1H330MPD Datasheet

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ECE-A1HN330U

Panasonic Electronic ComponentsIn Stock: 2474ECE-A1HN330U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UDB1H330MHM is determined by the following mandatory parameters:

• Capacitance: 33 µF (exact match required)
• Voltage Rating: 50 V (exact match required)
• Tolerance: ±20% (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Polarization: Bi-Polar (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package Type: Radial, Can (exact match required)
• RoHS Compliance: ROHS3 Compliant (required for regulatory compliance)

The following parts meet all substitution criteria:

• UVP1H330MPD (Nichicon, UVP series): Extended lifetime rating of 2000 hours at 85°C; smaller physical dimensions (0.315" diameter, 0.512" height); reduced ripple current specifications at low frequency (105 mA @ 120 Hz vs. 800 mA @ 600 Hz); product status is Not For New Designs.

• ECE-A1HN330U (Panasonic Electronic Components, SU series): Extended lifetime rating of 2000 hours at 85°C; smaller physical dimensions (0.315" diameter, 0.453" height); reduced ripple current specifications at low frequency (110 mA @ 120 Hz); active product status; REACH Unaffected.

Parameter Comparison

Engineering Selection Recommendations

For Active Production Designs: ECE-A1HN330U (Panasonic) is the preferred substitute. It maintains active product status, provides extended lifetime (2000 hours at 85°C), and is REACH Unaffected. The smaller physical dimensions (0.315" diameter, 0.453" height) allow for more compact board layouts. Lead spacing of 0.138" (4.60mm) requires PCB footprint adjustment from the original 0.295" (7.50mm) spacing.

For Designs Transitioning Away from Production: UVP1H330MPD (Nichicon) is acceptable as a secondary option. Although marked as Not For New Designs, it provides extended lifetime (2000 hours at 85°C) and maintains the same manufacturer as the primary part. The smaller physical dimensions and reduced lead spacing require PCB footprint modification.

For Designs Requiring Maximum Compatibility: UDB1H330MHM remains the primary choice if PCB layout constraints prevent accommodation of smaller substitute dimensions or if the 1000-hour lifetime rating at 85°C is sufficient for the application.

All substitute parts are ROHS3 compliant and maintain the same electrical specifications (33 µF, 50 V, ±20% tolerance, -40°C ~ 85°C operating range, bi-polar configuration).

Frequently Asked Questions (FAQ)

Q: Can UVP1H330MPD or ECE-A1HN330U be used as direct drop-in replacements for UDB1H330MHM?

A: No. While all three parts share identical electrical specifications (33 µF, 50 V, ±20% tolerance), the substitute parts have significantly different physical dimensions and lead spacing. UVP1H330MPD and ECE-A1HN330U measure 0.315" diameter with 0.138" lead spacing, compared to UDB1H330MHM at 0.630" diameter with 0.295" lead spacing. PCB footprint modification is required.

Q: What is the primary advantage of substituting to ECE-A1HN330U?

A: ECE-A1HN330U offers doubled lifetime rating (2000 hours at 85°C versus 1000 hours) and maintains active product status. It is also REACH Unaffected, providing regulatory flexibility. The smaller form factor enables more compact board designs.

Q: Why is UVP1H330MPD marked as Not For New Designs?

A: This designation indicates the part is in mature or declining production phase. While it remains available and functional, Nichicon recommends using alternative parts for new design initiatives. However, it remains suitable for legacy design support or inventory management.

Q: Are there differences in ripple current handling between these parts?

A: Yes. UDB1H330MHM specifies 800 mA ripple current at 600 Hz. UVP1H330MPD and ECE-A1HN330U specify approximately 105-110 mA at 120 Hz and 187-210 mA at 10 kHz. These differences reflect different application profiles (audio versus general purpose). Verify ripple current requirements for your specific circuit topology before substitution.

Q: Do all three parts require the same PCB land pattern?

A: No. UDB1H330MHM requires a 0.295" (7.50mm) lead spacing pattern. Both UVP1H330MPD and ECE-A1HN330U require a 0.138" (4.60mm) lead spacing pattern. PCB redesign is necessary when substituting between these groups.

Q: What compliance certifications apply to all three parts?

A: All three parts are ROHS3 compliant. UDB1H330MHM and UVP1H330MPD are REACH Affected. ECE-A1HN330U is REACH Unaffected. All carry EAR99 ECCN classification and 8532.22.0020 HTSUS code.