Equivalent & Substitute Parts for UES1C331MHM1TO

Part Overview

The UES1C331MHM1TO is a 330 µF, 16 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is rated for 1000 hours at 85°C and is designed for audio applications. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Bi-Polar
Lead Spacing	0.197" (5.00mm)
Package Type	Radial, Can
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the UES1C331MHM1TO is determined by the following critical parameters:

Capacitance Value: Must be 330 µF (exact match required)
Voltage Rating: Must be equal to or greater than 16 V
Tolerance: Must be ±20% or tighter
Package Type: Must be Radial, Can configuration
Lead Spacing: Must be 0.197" (5.00mm)
Mounting Type: Must be Through Hole
Operating Temperature Range: Must support -40°C ~ 85°C minimum
Polarization: Must be Bi-Polar

All three substitute parts meet these criteria. The substitutes differ in voltage rating (25 V or 35 V) and thermal lifetime (2000 Hrs @ 85°C), both of which represent improvements over the original specification and do not restrict compatibility.

Parameter Comparison

Parameter	UES1C331MHM1TO	UVP1E331MHD1TO	ECE-A1EN331UB	ECE-A1VN331UB
Manufacturer	Nichicon	Nichicon	Panasonic Electronic Components	Panasonic Electronic Components
Capacitance	330 µF	330 µF	330 µF	330 µF
Voltage Rating	16 V	25 V	25 V	35 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ 85°C	1000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Polarization	Bi-Polar	Bi-Polar	Bi-Polar	Bi-Polar
Lead Spacing	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Size / Dimension	0.492" Dia (12.50mm)	0.492" Dia (12.50mm)	0.492" Dia (12.50mm)	0.492" Dia (12.50mm)
Height - Seated (Max)	0.846" (21.50mm)	0.866" (22.00mm)	0.866" (22.00mm)	0.866" (22.00mm)
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Not For New Designs	Active	Active

Engineering Selection Recommendations

UVP1E331MHD1TO (Nichicon): This part maintains manufacturer continuity with the original UES1C331MHM1TO while providing a 25 V voltage rating and doubled thermal lifetime (2000 Hrs @ 85°C). However, this part is classified as "Not For New Designs," making it suitable only for legacy system support or direct replacement scenarios where supply of the original part is exhausted.

ECE-A1EN331UB (Panasonic Electronic Components): This substitute offers a 25 V voltage rating, 2000 Hrs @ 85°C lifetime, and Active product status. It is ROHS3 compliant and REACH unaffected. The slightly increased seated height (0.866" vs. 0.846") must be verified against PCB layout constraints. This part is suitable for new designs and ongoing production.

ECE-A1VN331UB (Panasonic Electronic Components): This substitute provides the highest voltage rating at 35 V with 2000 Hrs @ 85°C lifetime and Active product status. It is ROHS3 compliant and REACH unaffected. The increased seated height must be verified against PCB layout constraints. This part offers maximum voltage margin and is suitable for new designs and ongoing production.

Frequently Asked Questions (FAQ)

Q: Can I use a 25 V or 35 V rated capacitor in place of the 16 V UES1C331MHM1TO?

A: Yes. Higher voltage ratings are electrically compatible with lower voltage applications. The substitute parts (25 V and 35 V) will function correctly in circuits designed for 16 V operation. Voltage rating indicates the maximum voltage the capacitor can safely withstand; operating at lower voltages does not degrade performance.

Q: What is the significance of the increased thermal lifetime in substitute parts?

A: The substitute parts are rated for 2000 Hrs @ 85°C compared to 1000 Hrs @ 85°C for the original part. This represents improved reliability and extended operational life under thermal stress. This parameter does not restrict compatibility; it indicates enhanced performance.

Q: Does the 0.02" (0.50mm) increase in seated height affect compatibility?

A: The substitute parts have a maximum seated height of 0.866" (22.00mm) compared to 0.846" (21.50mm) for the original part. This 0.02" difference must be verified against PCB layout, component spacing, and enclosure clearance requirements. If space constraints are critical, physical validation is necessary.

Q: Why are ECE-A1EN331UB and ECE-A1VN331UB classified as Active while the original part is Not For New Designs?

A: Product status reflects manufacturer support and availability strategy. Active status indicates the part is in current production and recommended for new designs. The original UES1C331MHM1TO has reached end-of-life. For new designs, ECE-A1EN331UB or ECE-A1VN331UB are preferred. For legacy system maintenance, UVP1E331MHD1TO provides manufacturer continuity.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant. The original UES1C331MHM1TO is also ROHS3 compliant, ensuring regulatory consistency across the substitution group.

Q: What is the difference between ECE-A1EN331UB and ECE-A1VN331UB?

A: Both parts are Panasonic ECE-A1 series capacitors with identical capacitance (330 µF), tolerance (±20%), and thermal lifetime (2000 Hrs @ 85°C). The primary difference is voltage rating: ECE-A1EN331UB is rated 25 V, while ECE-A1VN331UB is rated 35 V. Selection depends on circuit voltage requirements and design margin preferences.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message