Equivalent & Substitute Parts for 2.5SWZ330MR15

Part Overview

The Rubycon 2.5SWZ330MR15 is a 330 µF, 2.5 V aluminum polymer surface mount capacitor in the 2917 (7343 Metric) package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part operates across a temperature range of -55°C to 105°C with a rated lifetime of 2000 hours at 105°C, suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	2.5 V
Tolerance	±20%
Type	Aluminum Polymer
Package	2917 (7343 Metric)
Mounting Type	Surface Mount
Operating Temperature Range	-55°C to 105°C
Lifetime	2000 Hrs @ 105°C
ESR	15 mOhm
Ripple Current @ 100 kHz	2.7 A

Substitute Part Grouping Explanation

Substitution for the 2.5SWZ330MR15 is determined by strict equivalence in the following parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 2.5 V (exact match required)
Tolerance: ±20% (exact match required)
Package: 2917 (7343 Metric) (exact match required)
Type: Aluminum Polymer (exact match required)
Operating Temperature Range: -55°C to 105°C (exact match required)
Lifetime: 2000 Hrs @ 105°C (exact match required)

Two substitute parts meet these criteria:

EEF-SX0E331ER (Panasonic) – Direct functional substitute with improved ESR performance
EEF-CX0E331R (Panasonic) – Parametric equivalent with identical ESR specification

Both substitutes are active products with full RoHS3 compliance and REACH unaffected status, providing long-term availability and regulatory compliance advantages over the obsolete Rubycon part.

Parameter Comparison

Parameter	2.5SWZ330MR15 (Rubycon)	EEF-SX0E331ER (Panasonic)	EEF-CX0E331R (Panasonic)
Capacitance	330 µF	330 µF	330 µF
Voltage Rating	2.5 V	2.5 V	2.5 V
Tolerance	±20%	±20%	±20%
Type	Aluminum Polymer	Aluminum Polymer	Aluminum Polymer
Package	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Lifetime @ 105°C	2000 Hrs	2000 Hrs	2000 Hrs
ESR	15 mOhm	9 mOhm	15 mOhm
Ripple Current @ 100 kHz	2.7 A	6.3 A	5.1 A
Height - Seated (Max)	0.075" (1.90 mm)	0.079" (2.00 mm)	0.075" (1.90 mm)
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

EEF-CX0E331R is the parametric equivalent substitute, matching the 2.5SWZ330MR15 in all critical electrical and mechanical specifications including ESR (15 mOhm) and maximum seated height (1.90 mm). This part is recommended for direct replacement in designs where the original component specifications are non-negotiable. The Panasonic SP-Cap CX series provides active product status with full RoHS3 compliance and REACH unaffected certification, ensuring regulatory compliance and long-term supply availability.

EEF-SX0E331ER is a functional substitute offering superior electrical performance with reduced ESR (9 mOhm) and increased ripple current capability (6.3 A @ 100 kHz). This part is suitable for applications where improved thermal performance and lower impedance are beneficial. The maximum seated height is 2.00 mm, which may require PCB layout verification in space-constrained designs. The Panasonic SP-Cap SX series is an active product with equivalent compliance certifications.

Both substitutes are available in Tape & Reel packaging and maintain compatibility with the 2917 (7343 Metric) footprint and land pattern.

Frequently Asked Questions (FAQ)

Q: Can EEF-SX0E331ER be used as a direct drop-in replacement for 2.5SWZ330MR15?

A: EEF-SX0E331ER is functionally compatible with identical capacitance, voltage, tolerance, and temperature specifications. The 0.10 mm increase in seated height (2.00 mm vs. 1.90 mm) must be verified against PCB clearance requirements. The reduced ESR and increased ripple current are performance improvements that do not compromise compatibility.

Q: What is the difference between EEF-SX0E331ER and EEF-CX0E331R?

A: Both parts share identical capacitance, voltage, tolerance, and temperature ratings. EEF-CX0E331R matches the original part's ESR (15 mOhm) and seated height (1.90 mm), making it the parametric equivalent. EEF-SX0E331ER offers lower ESR (9 mOhm) and higher ripple current (6.3 A vs. 2.7 A), providing enhanced performance at the cost of slightly increased height (2.00 mm).

Q: Are both substitute parts RoHS and REACH compliant?

A: Yes. Both EEF-SX0E331ER and EEF-CX0E331R are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Why is the original 2.5SWZ330MR15 obsolete?

A: The Rubycon part is classified as obsolete. Both Panasonic substitutes are active products with established supply chains, providing superior long-term availability and regulatory support.

Q: Can these parts be used interchangeably in the same design?

A: EEF-CX0E331R is the direct parametric equivalent and requires no design changes. EEF-SX0E331ER requires verification of the 0.10 mm height difference against PCB layout constraints. Both parts are electrically compatible with the original specification.

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