UPS1H331MPD Equivalent & Substitute Parts

Part Overview

The Nichicon UPS1H331MPD is a 330 µF, 50 V aluminum electrolytic capacitor in radial, can package with a rated lifetime of 2000 hours at 105°C. This component carries a "Not For New Designs" product status, indicating it is obsolete or being phased out. Finding equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and potentially improve performance characteristics such as extended lifetime, lower impedance, or enhanced reliability ratings.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00mm)
Diameter	0.394" (10.00mm)
Height	0.866" (22.00mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UPS1H331MPD is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria (Must Match):

Capacitance: 330 µF
Voltage Rating: 50 V (or higher)
Tolerance: ±20%
Polarization: Polar
Mounting Type: Through Hole
Package Type: Radial, Can
Operating Temperature Range: -55°C ~ 105°C

Secondary Compatibility Factors:

Lead Spacing: 0.197" (5.00mm) for direct footprint compatibility
Diameter: 0.394" (10.00mm) for board layout fit
Height: Must not exceed available PCB clearance

Performance Enhancement Parameters:

Lifetime @ 105°C: Extended lifetimes (5000 Hrs or 7000 Hrs) provide improved reliability
Impedance: Lower values indicate better high-frequency performance
Ripple Current Capability: Higher ratings support increased current handling

Substitute parts are grouped into two categories: Direct Equivalents (matching all mechanical dimensions and electrical specifications) and Upgrades (higher voltage ratings or extended lifetimes with compatible footprints).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ 105°C	Impedance (mOhms)	Lead Spacing	Diameter	Height	Product Status
UPS1H331MPD	Nichicon	330 µF	50 V	2000 Hrs	150	0.197" (5.00mm)	0.394" (10.00mm)	0.866" (22.00mm)	Not For New Designs
UPJ1H331MHD6	Nichicon	330 µF	50 V	5000 Hrs	78	0.295" (7.50mm)	0.630" (16.00mm)	0.650" (16.50mm)	Not For New Designs
UPJ1H331MPD	Nichicon	330 µF	50 V	5000 Hrs	72	0.197" (5.00mm)	0.394" (10.00mm)	1.299" (33.00mm)	Not For New Designs
UPM1H331MHD6	Nichicon	330 µF	50 V	5000 Hrs	60	0.295" (7.50mm)	0.630" (16.00mm)	0.669" (17.00mm)	Not For New Designs
UPW1H331MPD	Nichicon	330 µF	50 V	5000 Hrs	90	0.197" (5.00mm)	0.394" (10.00mm)	0.787" (20.00mm)	Not For New Designs
63PX330MEFC10X20	Rubycon	330 µF	63 V	2000 Hrs	—	0.197" (5.00mm)	0.394" (10.00mm)	0.846" (21.50mm)	Active
B41858C6337M000	EPCOS - TDK Electronics	330 µF	50 V	5000 Hrs	118	0.197" (5.00mm)	0.394" (10.00mm)	0.866" (22.00mm)	Active
B41888C6337M000	EPCOS - TDK Electronics	330 µF	50 V	7000 Hrs	75	0.197" (5.00mm)	0.394" (10.00mm)	0.866" (22.00mm)	Active
ECA-1JHG331	Panasonic Electronic Components	330 µF	63 V	2000 Hrs	—	0.197" (5.00mm)	0.394" (10.00mm)	0.866" (22.00mm)	Active
ECA-1JHG331E	Panasonic Electronic Components	330 µF	63 V	2000 Hrs	—	0.197" (5.00mm)	0.394" (10.00mm)	0.866" (22.00mm)	Active
EKMQ630ELL331MJ20S	Chemi-Con	330 µF	63 V	2000 Hrs	—	0.197" (5.00mm)	0.394" (10.00mm)	0.846" (21.50mm)	Active

Engineering Selection Recommendations

Direct Footprint Replacement (Same Lead Spacing and Diameter):

For applications requiring identical PCB layout compatibility with the UPS1H331MPD, the UPW1H331MPD (Nichicon) provides a direct mechanical fit with improved performance: 5000-hour lifetime at 105°C versus 2000 hours, and lower impedance (90 mOhms versus 150 mOhms). However, height differs slightly (0.787" versus 0.866"), requiring clearance verification.

Active Product Status with 50 V Rating:

The B41858C6337M000 and B41888C6337M000 (EPCOS - TDK Electronics) are active products with identical electrical specifications (330 µF, 50 V, ±20% tolerance) and matching footprints (0.197" lead spacing, 0.394" diameter, 0.866" height). The B41888C6337M000 offers superior performance with 7000-hour lifetime and 75 mOhms impedance, plus AEC-Q200 automotive qualification. Both are ROHS3 compliant.

Voltage Upgrade Options:

For applications tolerating higher voltage ratings, the ECA-1JHG331 (Panasonic), ECA-1JHG331E (Panasonic), 63PX330MEFC10X20 (Rubycon), and EKMQ630ELL331MJ20S (Chemi-Con) provide 63 V ratings with identical mechanical footprints (0.197" lead spacing, 0.394" diameter). These are all active products with ROHS3 compliance. The 63 V rating provides additional design margin for voltage transients.

Nichicon Series Alternatives:

Within the Nichicon product line, UPJ1H331MPD offers 5000-hour lifetime and lower impedance (72 mOhms) but requires height clearance of 1.299" (33.00mm). UPJ1H331MHD6 and UPM1H331MHD6 feature different lead spacing (0.295") and larger diameters (0.630"), requiring PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can I use a 63 V rated capacitor in place of the 50 V UPS1H331MPD?

A: Yes. A higher voltage rating is electrically compatible and provides additional safety margin. The 63 V alternatives (ECA-1JHG331, 63PX330MEFC10X20, EKMQ630ELL331MJ20S) maintain identical capacitance (330 µF), tolerance (±20%), and footprint dimensions (0.197" lead spacing, 0.394" diameter). Verify PCB layout clearance for height variations.

Q: What is the significance of impedance differences between substitute parts?

A: Impedance (measured in mOhms) indicates the capacitor's resistance to alternating current at specific frequencies. Lower impedance values (such as 60-75 mOhms in UPM1H331MHD6 and B41888C6337M000) provide better high-frequency filtering and reduced voltage ripple compared to the original 150 mOhms. This is beneficial for noise-sensitive applications.

Q: Why do some substitutes have different heights?

A: Capacitor height varies based on internal construction and lifetime rating. The UPW1H331MPD (0.787" height) and B41858C6337M000 / B41888C6337M000 (0.866" height) are compatible with the original 0.866" specification. The UPJ1H331MPD (1.299" height) requires verification of available PCB clearance above the component.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original UPS1H331MPD specification.

Q: Which substitute offers the best reliability upgrade?

A: The B41888C6337M000 (EPCOS - TDK Electronics) combines the longest lifetime (7000 hours at 105°C), lowest impedance (75 mOhms), AEC-Q200 automotive qualification, and identical footprint to the original part. It is an active product suitable for new designs.

Q: Can I substitute parts with different lead spacing?

A: No. Parts with different lead spacing (such as UPJ1H331MHD6 and UPM1H331MHD6 at 0.295" spacing) require PCB redesign and cannot be used as direct drop-in replacements. Stick to parts with 0.197" (5.00mm) lead spacing for direct compatibility.

Q: What does "Not For New Designs" mean?

A: This status indicates the part is obsolete or being discontinued by the manufacturer. New designs should use active products such as B41858C6337M000, B41888C6337M000, ECA-1JHG331, or EKMQ630ELL331MJ20S to ensure long-term supply availability and manufacturer support.

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