URZ1A331MPD Equivalent & Substitute Parts

Part Overview

The URZ1A331MPD is a 330 µF, 10 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This part operates across a temperature range of -55°C to 105°C with a rated lifetime of 1000 hours at 105°C. The URZ series is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Substitute parts must maintain the same capacitance value, voltage rating, and mechanical compatibility while meeting current availability and compliance requirements.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Package Type	Radial, Can
Mounting Type	Through Hole
Operating Temperature Range	-55°C to 105°C
Lifetime @ 105°C	1000 Hrs
Lead Spacing	0.138" (4.60mm)
Diameter	0.315" (8.00mm)
Height (Max)	0.413" (10.50mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the URZ1A331MPD is determined by strict adherence to the following parameters:

Primary Substitution Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 10 V (exact match required)
Tolerance: ±20% (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: 0.138" (4.60mm) (exact match required)
Diameter: 0.315" (8.00mm) (exact match required)

Secondary Considerations:

Height may vary within mechanical envelope constraints
Lifetime at 105°C may exceed minimum requirement
Ripple current ratings may differ based on series design
Impedance characteristics may vary

Parts are grouped into three categories: direct equivalents (same series characteristics), similar substitutes (same electrical specifications with different series), and upgrades (higher voltage rating with same capacitance).

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Lead Spacing	Diameter	Height (Max)	Product Status	Mounting
URZ1A331MPD	Nichicon	URZ	330 µF	10 V	±20%	1000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.413" (10.50mm)	Obsolete	Through Hole
UPM1A331MPD	Nichicon	UPM	330 µF	10 V	±20%	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Not For New Designs	Through Hole
UPV1A331MGD	Nichicon	UPV	330 µF	10 V	±20%	5000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Not For New Designs	Through Hole
UPW1A331MPD	Nichicon	UPW	330 µF	10 V	±20%	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.453" (11.50mm)	Not For New Designs	Through Hole
UVZ1A331MED	Nichicon	UVZ	330 µF	10 V	±20%	1000 Hrs	0.098" (2.50mm)	0.248" (6.30mm)	0.492" (12.50mm)	Obsolete	Through Hole
UWT1A331MNL1GS	Nichicon	UWT	330 µF	10 V	±20%	1000 Hrs	—	0.315" (8.00mm)	0.394" (10.00mm)	Active	Surface Mount
16WXA330MEFCCE8X9	Rubycon	WXA	330 µF	16 V	±20%	2000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.413" (10.50mm)	Active	Through Hole
ECA-1AHG331I	Panasonic	NHG-A	330 µF	10 V	±20%	1000 Hrs	0.098" (2.50mm)	0.248" (6.30mm)	0.480" (12.20mm)	Active	Through Hole
ECA-1AHG331B	Panasonic	NHG-A	330 µF	10 V	±20%	1000 Hrs	0.197" (5.00mm)	0.248" (6.30mm)	0.480" (12.20mm)	Active	Through Hole

Engineering Selection Recommendations

Direct Mechanical Substitutes (Same Lead Spacing and Diameter):

UPM1A331MPD, UPV1A331MGD, and UPW1A331MPD are direct mechanical substitutes with identical lead spacing (0.138" / 4.60mm) and diameter (0.315" / 8.00mm). These parts differ only in height and lifetime rating. UPW1A331MPD offers the closest height match at 0.453" (11.50mm) versus the original 0.413" (10.50mm). All three are ROHS3 compliant. UPM1A331MPD carries AEC-Q200 automotive qualification, suitable for applications requiring automotive-grade reliability.

Compact Footprint Alternatives (Smaller Diameter):

UVZ1A331MED and ECA-1AHG331I/B feature reduced diameter (0.248" / 6.30mm) and different lead spacing. These are mechanically incompatible with the original PCB layout but electrically equivalent. ECA-1AHG331I is currently active and carries AEC-Q200 qualification. ECA-1AHG331B uses 0.197" (5.00mm) lead spacing, requiring PCB redesign.

Surface Mount Alternative:

UWT1A331MNL1GS is a surface mount variant with identical capacitance and voltage. This part requires different PCB land pattern and assembly process, suitable only for designs transitioning to surface mount technology.

Voltage Upgrade Option:

16WXA330MEFCCE8X9 (Rubycon) provides 16 V rating with identical mechanical dimensions and lead spacing. This upgrade maintains full backward compatibility while providing increased voltage margin. AEC-Q200 qualified for automotive applications.

Recommended Selection Path:

For direct replacement in existing designs: UPW1A331MPD (best height match, active status pending). For automotive applications: ECA-1AHG331I (active, AEC-Q200 qualified, compact). For voltage margin improvement: 16WXA330MEFCCE8X9 (active, same footprint, higher voltage).

Frequently Asked Questions (FAQ)

Q: Can UPM1A331MPD directly replace URZ1A331MPD on the PCB?

A: Yes. Both parts share identical lead spacing (0.138" / 4.60mm) and diameter (0.315" / 8.00mm). Height difference is 0.512" versus 0.413", which may require clearance verification in confined spaces. Electrical specifications are identical.

Q: What is the difference between UPV1A331MGD and UPW1A331MPD?

A: Both are 330 µF, 10 V Nichicon parts with identical lead spacing and diameter. UPV1A331MGD offers 5000-hour lifetime at 105°C versus UPW1A331MPD's 3000 hours. UPW1A331MPD has lower impedance (117 mOhms vs. 270 mOhms) and slightly better ripple current handling. Height differs: 0.512" versus 0.453".

Q: Why is ECA-1AHG331I listed as a substitute if lead spacing differs?

A: ECA-1AHG331I has 0.098" (2.50mm) lead spacing versus the original 0.138" (4.60mm). This part is electrically equivalent but mechanically incompatible with the original PCB layout. It is listed as an alternative for designs allowing PCB modification or new designs.

Q: Can 16WXA330MEFCCE8X9 be used as a drop-in replacement?

A: Yes. The Rubycon part maintains identical lead spacing (0.138" / 4.60mm), diameter (0.315" / 8.00mm), and height (0.413" / 10.50mm). The 16 V rating is backward compatible with 10 V applications, providing additional voltage margin.

Q: Is UWT1A331MNL1GS compatible with through-hole PCB layouts?

A: No. UWT1A331MNL1GS is a surface mount component requiring SMD land pattern (0.327" x 0.327" / 8.30mm x 8.30mm). It is not compatible with through-hole designs without PCB redesign and assembly process change.

Q: Which substitute offers the best long-term reliability?

A: UPV1A331MGD provides the longest rated lifetime at 5000 hours at 105°C. However, product status is "Not For New Designs." For active products, UPW1A331MPD offers 3000-hour lifetime with current availability.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed parts carry ROHS3 compliance certification. Panasonic ECA-1AHG series parts are also AEC-Q200 qualified for automotive applications.

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