UPB1H331MPD Equivalent & Substitute Parts

Part Overview

The UPB1H331MPD is a 330 µF, 50 V aluminum electrolytic capacitor in radial can package manufactured by Nichicon. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The UPB series provides general-purpose energy storage with a rated lifetime of 7000 hours at 105°C and operates across the temperature range of -40°C to 105°C.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Lifetime @ 105°C	7000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)

Substitute Part Grouping Explanation

Substitution for the UPB1H331MPD is determined by strict equivalence in the following parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 50 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Case Diameter: 0.394" (10.00 mm) (exact match required)

Substitute parts are grouped into three categories based on product status and availability:

Direct Substitutes (Equivalent Performance): Parts with identical electrical and mechanical specifications that serve as direct replacements.

Similar Substitutes (Functional Equivalents): Parts meeting all core electrical and mechanical requirements but with variations in lifetime rating or height that do not affect circuit functionality.

Upgrade Options (Enhanced Performance): Parts exceeding the original specifications in lifetime or ripple current capacity while maintaining full mechanical and electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Operating Temp	Lead Spacing	Height (Max)	Product Status
UPB1H331MPD	Nichicon	330 µF	50 V	±20%	7000 Hrs	-40°C ~ 105°C	0.197" (5.00 mm)	0.846" (21.50 mm)	Obsolete
UHW1H331MPD	Nichicon	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	0.197" (5.00 mm)	0.846" (21.50 mm)	Not For New Designs
UHD1H331MPD	Nichicon	330 µF	50 V	±20%	4000 Hrs	-40°C ~ 105°C	0.197" (5.00 mm)	1.063" (27.00 mm)	Not For New Designs
UHE1H331MPD	Nichicon	330 µF	50 V	±20%	7000 Hrs	-40°C ~ 105°C	0.197" (5.00 mm)	0.984" (25.00 mm)	Not For New Designs
50YXF330MEFC10X20	Rubycon	330 µF	50 V	±20%	7000 Hrs	-40°C ~ 105°C	0.197" (5.00 mm)	0.866" (22.00 mm)	Last Time Buy
50ZLJ330M10X20	Rubycon	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	0.197" (5.00 mm)	0.866" (22.00 mm)	Active
EKZN500ELL331MJ20S	Chemi-Con	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	0.197" (5.00 mm)	0.846" (21.50 mm)	Active
50YXJ330M10X20	Rubycon	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	0.197" (5.00 mm)	0.866" (22.00 mm)	Active
50ZLH330MEFC10X20	Rubycon	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	0.197" (5.00 mm)	0.866" (22.00 mm)	Active
B41888C6337M000	EPCOS - TDK Electronics	330 µF	50 V	±20%	7000 Hrs	-55°C ~ 105°C	0.197" (5.00 mm)	0.866" (22.00 mm)	Active
EEU-EB1H331	Panasonic Electronic Components	330 µF	50 V	±20%	10000 Hrs	-40°C ~ 105°C	0.197" (5.00 mm)	0.866" (22.00 mm)	Active

Engineering Selection Recommendations

For General-Purpose Applications: EKZN500ELL331MJ20S (Chemi-Con) and EEU-EB1H331 (Panasonic) are active products with 10000-hour lifetime ratings and identical height to the original UPB1H331MPD, providing direct mechanical and electrical compatibility with extended service life.

For Active Product Preference: 50ZLJ330M10X20 (Rubycon) and 50YXJ330M10X20 (Rubycon) are both active products with 10000-hour lifetimes and meet all electrical and mechanical requirements. These parts offer current availability and long-term supply continuity.

For Automotive Applications: B41888C6337M000 (EPCOS - TDK Electronics) is an active product with AEC-Q200 rating and extended operating temperature range (-55°C to 105°C), suitable for automotive-grade requirements while maintaining all core electrical specifications.

For Nichicon Ecosystem: UHW1H331MPD (Nichicon) provides a direct Nichicon alternative with identical height and improved 10000-hour lifetime, though classified as "Not For New Designs."

Height Considerations: Parts with heights of 0.866" (22.00 mm) or 0.984" (25.00 mm) require PCB layout verification to confirm clearance compatibility. The original UPB1H331MPD height is 0.846" (21.50 mm).

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different height? A: Height differences must be evaluated against PCB layout constraints and available clearance. Parts with greater height (0.984" or 1.063") may require design verification. Parts with similar height (0.866") are preferred for direct mechanical compatibility.

Q: What is the significance of "Product Status" in the selection process? A: Product Status indicates supply availability and manufacturer support. Active products offer current availability and long-term supply assurance. "Not For New Designs" parts are available but not recommended for new circuit designs. "Obsolete" and "Last Time Buy" parts have limited availability.

Q: Are all substitute parts RoHS3 compliant? A: All substitute parts listed are RoHS3 compliant. The original UPB1H331MPD does not specify RoHS status.

Q: What is the difference between a direct substitute and an upgrade? A: Direct substitutes maintain identical specifications including lifetime rating. Upgrades exceed the original specifications, typically offering extended lifetime (10000 hours versus 7000 hours) while maintaining full electrical and mechanical compatibility.

Q: Can I use a part with a lower lifetime rating? A: UHD1H331MPD has a 4000-hour lifetime, which is lower than the original 7000-hour rating. This part is functionally compatible but provides reduced service life and is not recommended for applications requiring the original lifetime specification.

Q: Which substitute offers the best long-term availability? A: Active products (50ZLJ330M10X20, 50YXJ330M10X20, 50ZLH330MEFC10X20, EKZN500ELL331MJ20S, B41888C6337M000, and EEU-EB1H331) offer the best long-term supply continuity and are preferred for new designs and ongoing production.

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