UVP1H331MHD Equivalent & Substitute Parts

Part Overview

The UVP1H331MHD is a 330 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 2000 hours at 85°C and is designed for general purpose applications requiring through-hole mounting. The part is classified as "Not For New Designs," making identification of active equivalent alternatives essential for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Bi-Polar
Lead Spacing	0.295" (7.50 mm)
Case Diameter	0.630" (16.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can

Substitute Part Grouping Explanation

Substitution for the UVP1H331MHD is determined by strict equivalence across the following electrical and mechanical parameters:

Capacitance value: 330 µF (exact match required)
Voltage rating: 50 V (exact match required)
Tolerance: ±20% (exact match required)
Lifetime specification: 2000 Hrs @ 85°C (exact match required)
Operating temperature range: -40°C ~ 85°C (exact match required)
Polarization: Bi-Polar (exact match required)
Lead spacing: 0.295" (7.50 mm) (exact match required)
Case diameter: 0.630" (16.00 mm) (exact match required)
Mounting type: Through Hole (exact match required)
Package type: Radial, Can (exact match required)

The substitute parts ECE-A1HN331U and ECE-A1HN331UB, both manufactured by Panasonic Electronic Components, meet all electrical and mechanical equivalence criteria. Both parts are classified as Active products, providing a path forward from the obsolete UVP1H331MHD.

Parameter Comparison

Parameter	UVP1H331MHD (Nichicon)	ECE-A1HN331U (Panasonic)	ECE-A1HN331UB (Panasonic)
Capacitance	330 µF	330 µF	330 µF
Voltage Rating	50 V	50 V	50 V
Tolerance	±20%	±20%	±20%
Lifetime @ 85°C	2000 Hrs	2000 Hrs	2000 Hrs
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Polarization	Bi-Polar	Bi-Polar	Bi-Polar
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Case Diameter	0.630" (16.00 mm)	0.630" (16.00 mm)	0.630" (16.00 mm)
Height - Seated (Max)	1.063" (27.00 mm)	0.984" (25.00 mm)	1.063" (27.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can
Product Status	Not For New Designs	Active	Active
Packaging	Bulk	Bulk	Cut Tape (CT)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both ECE-A1HN331U and ECE-A1HN331UB are qualified substitutes for the UVP1H331MHD based on electrical and mechanical parameter equivalence. The primary distinction between the two Panasonic alternatives is packaging format:

ECE-A1HN331U is supplied in Bulk packaging, suitable for applications requiring standard component procurement and inventory management.

ECE-A1HN331UB is supplied in Cut Tape (CT) packaging, appropriate for automated assembly processes and tape-and-reel handling systems.

Both substitute parts carry Active product status, ensuring long-term availability and continued manufacturer support. Both are ROHS3 Compliant and meet the same regulatory and compliance requirements as the original part.

Frequently Asked Questions (FAQ)

Q: Can ECE-A1HN331U and ECE-A1HN331UB be used interchangeably with UVP1H331MHD?

A: Yes. Both Panasonic parts meet all electrical and mechanical equivalence criteria, including capacitance, voltage rating, tolerance, lifetime specification, operating temperature range, polarization, lead spacing, case diameter, and mounting configuration.

Q: What is the difference between ECE-A1HN331U and ECE-A1HN331UB?

A: The primary difference is packaging format. ECE-A1HN331U is supplied in Bulk packaging, while ECE-A1HN331UB is supplied in Cut Tape (CT) packaging. The electrical and mechanical specifications are identical. Selection depends on assembly process requirements and inventory handling procedures.

Q: Does the height difference between ECE-A1HN331U (0.984" / 25.00 mm) and the original UVP1H331MHD (1.063" / 27.00 mm) affect compatibility?

A: ECE-A1HN331U has a lower seated height. This difference must be evaluated against specific PCB layout and clearance requirements. ECE-A1HN331UB matches the original height specification of 1.063" (27.00 mm).

Q: Are the substitute parts compliant with current regulatory standards?

A: Yes. Both ECE-A1HN331U and ECE-A1HN331UB are ROHS3 Compliant and carry Active product status, confirming compliance with current environmental and regulatory requirements.

Q: Why is the original UVP1H331MHD marked "Not For New Designs"?

A: This designation indicates the part is obsolete or being phased out by the manufacturer. Active alternatives such as the Panasonic ECE-A1HN331U and ECE-A1HN331UB series are recommended for new designs and ongoing production.

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