EEF-SX0D331XR Equivalent & Substitute Parts

Part Overview

The EEF-SX0D331XR is a 330 µF, 2 V aluminum polymer surface mount capacitor manufactured by Panasonic Electronic Components in the SP-Cap SX series. This component is classified as "Not For New Designs," indicating it has been superseded. Equivalent and substitute parts are necessary to support existing designs, provide design flexibility, and ensure supply chain continuity for applications requiring 330 µF capacitance at 2 V with compatible mechanical and electrical characteristics.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	2 V
Tolerance	±20%
Type	Aluminum Polymer
Package	2917 (7343 Metric)
Mounting Type	Surface Mount
ESR (Equivalent Series Resistance)	6 mOhm
Lifetime @ Temperature	2000 Hrs @ 105°C
Operating Temperature Range	-55°C to 105°C
Physical Dimensions	7.30 mm L × 4.30 mm W × 2.00 mm H (max)

Substitute Part Grouping Explanation

Substitution for the EEF-SX0D331XR is determined by strict electrical and mechanical compatibility within the following categories:

Direct Equivalent (Same Electrical & Mechanical Specifications):

Capacitance: 330 µF
Voltage: 2 V
ESR: 6 mOhm
Package: 2917 (7343 Metric)
Tolerance: ±20%
Lifetime: 2000 Hrs @ 105°C

Upgrade Substitutes (Higher Voltage Rating):

Capacitance: 330 µF
Voltage: 2.5 V (higher rating, backward compatible)
ESR: 6 mOhm
Package: 2917 (7343 Metric)
Tolerance: ±20%
Lifetime: 2000 Hrs @ 105°C

Similar Alternatives (Same Voltage & Capacitance, Varied ESR):

Capacitance: 330 µF
Voltage: 2 V
ESR: 3–15 mOhm (performance variations)
Package: 2917 (7343 Metric)
Tolerance: ±20%
Lifetime: 2000 Hrs @ 105°C

All substitutes maintain identical package dimensions, mounting type, and thermal specifications to ensure PCB compatibility and thermal performance equivalence.

Parameter Comparison

Part Number	Series	Capacitance	Voltage	ESR	Height (Max)	Product Status	Inventory
EEF-SX0D331XR	SP-Cap SX	330 µF	2 V	6 mOhm	2.00 mm	Not For New Designs	16,536 Pcs
EEF-LX0D331R	SP-Cap LX	330 µF	2 V	6 mOhm	2.10 mm	Active	3,811 Pcs
EEF-SX0E331XE	SP-Cap SX	330 µF	2.5 V	6 mOhm	2.00 mm	Active	121,660 Pcs
EEF-SX0E331XR	SP-Cap SX	330 µF	2.5 V	6 mOhm	2.00 mm	Not For New Designs	2,377 Pcs
EEF-CX0D331R	SP-Cap CX	330 µF	2 V	15 mOhm	1.90 mm	Active	7,259 Pcs
EEF-GX0D331R	SP-Cap GX	330 µF	2 V	3 mOhm	2.00 mm	Active	18,564 Pcs
EEF-LX0D331R4	SP-Cap LX	330 µF	2 V	4.5 mOhm	2.10 mm	Active	12,752 Pcs
EEF-SX0D331E4	SP-Cap SX	330 µF	2 V	4.5 mOhm	2.00 mm	Active	45,320 Pcs
EEF-SX0D331ER	SP-Cap SX	330 µF	2 V	9 mOhm	2.00 mm	Active	7,517 Pcs
EEF-SX0D331R	SP-Cap SX	330 µF	2 V	9 mOhm	2.00 mm	Not For New Designs	8,037 Pcs
EEF-SX0D331XE	SP-Cap SX	330 µF	2 V	6 mOhm	2.00 mm	Active	4,900 Pcs

Engineering Selection Recommendations

Primary Direct Equivalent: EEF-LX0D331R is the recommended direct substitute. It maintains identical electrical specifications (330 µF, 2 V, 6 mOhm ESR) and package dimensions with Active product status. The 0.10 mm height increase (2.10 mm vs. 2.00 mm) is within standard PCB assembly tolerances and does not affect functionality.

Preferred Upgrade Option: EEF-SX0E331XE is the optimal choice for new designs and long-term supply assurance. It provides higher voltage rating (2.5 V) while maintaining identical capacitance, ESR, and physical dimensions. Active product status ensures sustained availability. The higher voltage rating provides design margin without performance compromise.

Alternative with Lower ESR: EEF-GX0D331R offers superior performance with 3 mOhm ESR (50% reduction from 6 mOhm), enabling higher ripple current handling (10.2 A @ 100 kHz vs. 7.5 A). Active status and identical package dimensions support direct substitution for applications requiring lower impedance.

Alternative with Optimized ESR: EEF-SX0D331E4 provides 4.5 mOhm ESR with Active status and identical package dimensions, balancing performance improvement with cost considerations.

All recommended substitutes are ROHS3 compliant and REACH unaffected, matching the original part's regulatory status.

Frequently Asked Questions (FAQ)

Q: Can EEF-LX0D331R replace EEF-SX0D331XR directly on the PCB? A: Yes. Both parts share identical electrical specifications (330 µF, 2 V, 6 mOhm ESR) and package footprint (2917/7343 Metric). The 0.10 mm height difference (2.10 mm vs. 2.00 mm) is within standard assembly tolerances and does not affect PCB layout or clearance.

Q: Why is EEF-SX0E331XE recommended as an upgrade? A: EEF-SX0E331XE maintains all electrical and mechanical compatibility while providing 2.5 V rating instead of 2 V. This higher voltage rating offers design margin for transient protection without changing physical dimensions or ESR characteristics. Active product status ensures long-term supply availability.

Q: What is the difference between parts with varying ESR values? A: ESR (Equivalent Series Resistance) affects ripple current capability and thermal performance. Lower ESR (3–4.5 mOhm) enables higher ripple current handling; higher ESR (9–15 mOhm) reduces ripple current capacity. Selection depends on application ripple current requirements. All parts maintain identical capacitance and voltage ratings.

Q: Are all substitute parts in the same package? A: Yes. All listed substitutes use the 2917 (7343 Metric) package with identical footprint dimensions (7.30 mm × 4.30 mm). Height variations (1.90–2.10 mm) are within standard PCB assembly clearance specifications and do not require layout modifications.

Q: What does "Not For New Designs" mean? A: This status indicates the part has been superseded by newer alternatives. While existing inventory remains available for legacy design support, Panasonic recommends using Active-status parts for new designs to ensure sustained supply and manufacturing support.

Q: Are all substitutes RoHS3 compliant? A: Yes. All listed parts are ROHS3 compliant and REACH unaffected, matching the regulatory compliance of the original EEF-SX0D331XR.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message