USF1C330MDD Equivalent & Substitute Parts

Part Overview

The USF1C330MDD is a 33 µF, 16 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 1000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing procurement and design continuity.

Key Parameters

Parameter	Value
Capacitance	33 µF
Voltage - Rated	16 V
Tolerance	±20%
Operating Temperature Range	-55°C ~ 105°C
Lifetime @ Temperature	1000 Hrs @ 105°C
Mounting Type	Through Hole
Package / Case	Radial, Can
Lead Spacing	0.098" (2.50mm)
Size / Dimension	0.248" Dia (6.30mm)
Height - Seated (Max)	0.315" (8.00mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the USF1C330MDD is determined by the following critical parameters:

Capacitance: 33 µF (exact match required)
Voltage Rating: 16 V (minimum; higher voltage ratings are acceptable for drop-in replacement)
Tolerance: ±20% (standard tolerance for this category)
Mounting Type: Through Hole (mechanical compatibility)
Package / Case: Radial, Can (form factor compatibility)
Lead Spacing: 0.098" (2.50mm) (PCB layout compatibility)
Physical Dimensions: 0.248" Dia (6.30mm) and 0.315" Height (8.00mm) (board space constraints)
Operating Temperature: -55°C ~ 105°C (functional range)
RoHS Compliance: ROHS3 Compliant (regulatory requirement)

Substitute parts are grouped into three categories based on these parameters:

Direct Equivalents (identical electrical and mechanical specifications): Parts maintaining the same capacitance, voltage, lead spacing, and physical dimensions with through-hole radial can packaging.

Functional Equivalents (same electrical performance, different form factor): Parts with matching capacitance and voltage but different mounting technology (surface mount) or lead spacing, suitable only if PCB redesign is acceptable.

Voltage-Upgraded Equivalents (higher voltage rating, same capacitance): Parts with 33 µF capacitance and voltage ratings above 16 V, compatible for applications where higher voltage margin is beneficial.

Parameter Comparison

Parameter	USF1C330MDD	RNS1C330MDS1	UPW1C330MDD	UVZ1J330MED	UWT1C330MCL1GB	EKMA350ELL330MF07D
Manufacturer	Nichicon	Nichicon	Nichicon	Nichicon	Nichicon	Chemi-Con
Capacitance	33 µF	33 µF	33 µF	33 µF	33 µF	33 µF
Voltage - Rated	16 V	16 V	16 V	63 V	16 V	35 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%
Type	Aluminum Electrolytic	Aluminum - Polymer	Aluminum Electrolytic	Aluminum Electrolytic	Aluminum Electrolytic	Aluminum Electrolytic
Lifetime @ Temp.	1000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C	1000 Hrs @ 105°C	1000 Hrs @ 105°C	1000 Hrs @ 105°C
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Surface Mount	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can	Radial, Can - SMD	Radial, Can
Lead Spacing	0.098" (2.50mm)	0.098" (2.50mm)	0.079" (2.00mm)	0.098" (2.50mm)	-	0.098" (2.50mm)
Size / Dimension	0.248" Dia (6.30mm)	0.248" Dia (6.30mm)	0.197" Dia (5.00mm)	0.248" Dia (6.30mm)	0.248" Dia (6.30mm)	0.248" Dia (6.30mm)
Height - Seated (Max)	0.315" (8.00mm)	0.315" (8.00mm)	0.433" (11.00mm)	0.492" (12.50mm)	0.213" (5.40mm)	0.315" (8.00mm)
Product Status	Obsolete	Active	Obsolete	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

RNS1C330MDS1 (Nichicon, Active Status): Direct equivalent with identical electrical and mechanical specifications. Offers extended lifetime (2000 Hrs @ 105°C vs. 1000 Hrs) and polymer construction with lower ESR (49 mOhm). Recommended for new designs and long-term procurement due to active product status and improved performance characteristics.

UPW1C330MDD (Nichicon, Obsolete Status): Functionally equivalent with matching capacitance and voltage. Extended lifetime (2000 Hrs @ 105°C). Lead spacing differs (0.079" vs. 0.098"), and physical dimensions are smaller (0.197" Dia, 0.433" Height). Suitable only if PCB layout accommodates different lead spacing and height.

UVZ1J330MED (Nichicon, Obsolete Status): Voltage-upgraded equivalent with 63 V rating. Maintains 33 µF capacitance and identical lead spacing and diameter. Height is increased (0.492" vs. 0.315"). Suitable for applications requiring higher voltage margin, provided board space permits increased height.

UWT1C330MCL1GB (Nichicon, Active Status): Surface-mount variant with identical electrical specifications. Reduced height (0.213" vs. 0.315") and active product status. Requires PCB redesign for surface-mount assembly; not suitable for through-hole applications.

EKMA350ELL330MF07D (Chemi-Con, Active Status): Voltage-upgraded equivalent with 35 V rating and 33 µF capacitance. Maintains identical lead spacing, diameter, and height. Active product status from alternative manufacturer. Suitable for drop-in replacement with voltage margin improvement.

Frequently Asked Questions (FAQ)

Q: Can RNS1C330MDS1 replace USF1C330MDD directly on the PCB?

A: Yes. RNS1C330MDS1 maintains identical lead spacing (0.098" / 2.50mm), diameter (0.248" / 6.30mm), and height (0.315" / 8.00mm). Both are through-hole radial can packages with 33 µF capacitance and 16 V rating. The polymer construction and extended lifetime are additional benefits.

Q: Why does UPW1C330MDD have different lead spacing?

A: UPW1C330MDD uses 0.079" (2.00mm) lead spacing compared to USF1C330MDD's 0.098" (2.50mm). This difference requires PCB layout verification before substitution. The smaller lead spacing may not fit existing through-hole patterns designed for 2.50mm spacing.

Q: Is UVZ1J330MED suitable for a 16 V application?

A: Yes. UVZ1J330MED is rated for 63 V, which exceeds the 16 V requirement. Higher voltage ratings provide additional safety margin and are electrically compatible with lower-voltage applications. However, the increased height (0.492" vs. 0.315") must be verified against board clearance constraints.

Q: What is the difference between aluminum electrolytic and aluminum-polymer capacitors?

A: RNS1C330MDS1 uses aluminum-polymer construction, which typically offers lower ESR (49 mOhm vs. standard electrolytic), extended lifetime (2000 Hrs vs. 1000 Hrs), and improved ripple current handling. Both types maintain the same capacitance and voltage ratings.

Q: Can UWT1C330MCL1GB replace USF1C330MDD?

A: UWT1C330MCL1GB is a surface-mount variant and cannot replace a through-hole component without PCB redesign. While electrical specifications are identical, the mounting technology and land pattern are fundamentally different. This substitution requires design modification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the regulatory status of USF1C330MDD. All parts are also REACH Unaffected and classified as EAR99 for export purposes.

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

A: RNS1C330MDS1, UWT1C330MCL1GB, and EKMA350ELL330MF07D all have active product status, indicating ongoing manufacturer support and availability. USF1C330MDD, UPW1C330MDD, and UVZ1J330MED are obsolete and subject to limited stock availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message