EEF-UD0G151XE

The EEF-UD0G151XE from Panasonic Electronic Components represents a compact aluminum polymer capacitor engineered for low-profile surface mount applications requiring stable performance across extended temperature ranges. This 150 µF capacitor operates at 4 V with ±20% tolerance, utilizing polymer electrolyte technology to achieve 12 mOhm equivalent series resistance while maintaining a 2917 (7343 metric) footprint of 7.30mm × 4.30mm with 3.00mm maximum seated height.

Polymer aluminum capacitors like the EEF-UD0G151XE deliver lower ESR compared to conventional aluminum electrolytic designs, enabling efficient ripple current handling of 3.3 A at 100 kHz. This characteristic makes the component suitable for power delivery networks, DC-DC converter output stages, and voltage rail decoupling where switching noise suppression and transient response matter. The 12 mOhm series resistance minimizes power dissipation during high-frequency operation, contributing to thermal stability in densely populated circuit layouts.

The capacitor belongs to Panasonic's SP-Cap UD series, designed for general-purpose applications spanning -40°C to 105°C operating temperature. With 1000 hours rated lifetime at 105°C, the component provides reliability for industrial environments, embedded systems, and consumer electronics experiencing variable thermal conditions. The polymer construction exhibits self-healing properties and reduced sensitivity to voltage reversal compared to liquid electrolyte alternatives.

Surface mount installation using the 2917 package enables automated assembly processes, while the 7.30mm × 4.30mm land pattern fits within board space constraints typical of portable devices and miniaturized modules. The component carries MSL 3 moisture sensitivity rating (168 hours floor life after bag opening), requiring standard dry storage and handling procedures during manufacturing.

This capacitor suits voltage smoothing on low-voltage digital rails, output filtering for battery management ICs, and bulk capacitance in portable equipment where board real estate limitations favor compact components. The 150 µF capacitance at 4 V rating positions the EEF-UD0G151XE for applications including point-of-load regulation, USB power delivery circuits, and system-on-chip power domains. The component is classified as obsolete by Panasonic, with suggested substitutes including EEF-SX0G151ER EEF-SX0G151ER Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 8043 and EEF-CX0J151XR EEF-CX0J151XR Panasonic Electronic Components CAP ALUM POLY 150UF 20% 6.3V SMD 31623 offering similar electrical characteristics in current production series. Engineers designing for new production should evaluate these alternatives while considering footprint compatibility and electrical parameter equivalence.

EEF-UD0G151XE (1)

Replacing Panasonic EEF-UD0G151XE When an Obsolete 150 µF 4 V Polymer Capacitor Is No Longer Easy to Source

Panasonic Electronic Components EEF-UD0G151XE is an obsolete SP-Cap UD series surface-mount aluminum polymer capacitor. Replacement searches usually begin when an existing power rail design, PCB assembly, or repair program still depends on its low ESR, compact 2917 footprint, and high ripple current capability.

Suitable equivalent or alternative part numbers to evaluate include Panasonic EEF-SX0G151ER EEF-SX0G151ER Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 8043 , Panasonic EEF-CX0J151XR EEF-CX0J151XR Panasonic Electronic Components CAP ALUM POLY 150UF 20% 6.3V SMD 31623 , Panasonic EEF-SX0G151E7 EEF-SX0G151E7 Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 5249 , Murata ECASD40G157M016K00 ECASD40G157M016K00 Murata Electronics CAP ALUM POLY 150UF 20% 4V SMD 3798 , and Panasonic EEF-CX0G151R EEF-CX0G151R Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 9389 .

Selecting a replacement is not only a matter of matching 150 µF and 4 V. The substitute must maintain output ripple performance, loop stability, surge margin, derating policy, solder land compatibility, component height limits, and availability over the product lifecycle. In low-voltage DC/DC converter outputs, FPGA core rails, CPU auxiliary rails, and compact industrial electronics, small ESR or package changes can affect transient response and control-loop behavior. For this reason, the alternatives below are compared from an engineering replacement perspective rather than as simple catalog substitutes.

What Defines the Panasonic EEF-UD0G151XE Original Component in a Replacement Review

Panasonic EEF-UD0G151XE is a 150 µF, 4 V aluminum polymer capacitor in the SP-Cap UD series. It uses a 2917 / 7343 metric surface-mount case with a maximum seated height of 3.00 mm. Its specified ESR is 12 mΩ, and its ripple current rating is 3.3 A at 100 kHz. The operating temperature range is -40°C to +105°C, with a lifetime rating of 1000 hours at 105°C.

Key replacement-relevant characteristics:

The original part is typically used on point-of-load regulator outputs, processor and memory power rails, embedded modules, telecom boards, consumer electronics, and general-purpose low-voltage decoupling. Because it combines low ESR with relatively high capacitance in a compact SMD body, the best replacement part for Panasonic EEF-UD0G151XE should be evaluated as part of the power-delivery network, not only as a bill-of-materials substitution.

Engineering Evaluation of Panasonic EEF-UD0G151XE Equivalent and Alternative Part Numbers

The following candidates can be considered for EEF-UD0G151XE replacement planning. Exact production suffixes, packaging format, and latest lifecycle status should be verified before final approval because polymer capacitor series may have tape-and-reel, ESR, or availability differences.

Manufacturer	Part Number	Key Specifications	Product Features	Typical Applications	Why It Can Replace Panasonic EEF-UD0G151XE	Main Differences or Limitations	Recommended Usage
Panasonic Electronic Components	EEF-SX0G151ER EEF-SX0G151ER Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 8043	150 µF, 4 V class, aluminum polymer SP-Cap, low ESR SMD package	Low ESR polymer construction, compact surface-mount format, designed for high ripple current power rails	DC/DC converter outputs, processor rails, compact digital boards, low-voltage filtering	Same manufacturer, same capacitance and voltage class, similar SP-Cap technology, intended for similar low-impedance power filtering	ESR, height, land pattern, endurance, and packaging suffix should be checked against the current datasheet before drop-in use	Strong first-choice Panasonic alternative when maintaining similar capacitor technology and sourcing channel is preferred
Panasonic Electronic Components	EEF-CX0J151XR EEF-CX0J151XR Panasonic Electronic Components CAP ALUM POLY 150UF 20% 6.3V SMD 31623	150 µF, 6.3 V class, aluminum polymer SP-Cap, SMD package	Higher voltage rating than the 4 V original, low ESR polymer capacitor behavior, suitable for compact power designs	3.3 V rails, 5 V-adjacent low-voltage rails with derating, industrial and embedded DC/DC outputs	Capacitance matches the original, and the higher voltage rating may improve voltage derating margin	May differ in ESR, package height, footprint, ripple current, and impedance profile; higher voltage versions can have different electrical behavior	Useful where extra voltage margin is desired and PCB/mechanical compatibility is confirmed
Panasonic Electronic Components	EEF-SX0G151E7 EEF-SX0G151E7 Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 5249	150 µF, 4 V class, aluminum polymer SP-Cap, SMD package	Similar Panasonic SP-Cap family positioning, low ESR construction, high-frequency decoupling capability	Low-voltage switching regulator outputs, FPGA/ASIC rails, compact electronics	Same nominal capacitance and voltage class with comparable polymer capacitor use case	Suffix may indicate packaging or series variation; ESR and lifetime should not be assumed identical without datasheet confirmation	Suitable for alternate sourcing when EEF-SX0G151ER EEF-SX0G151ER Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 8043 is not available, subject to validation
Murata	ECASD40G157M016K00 ECASD40G157M016K00 Murata Electronics CAP ALUM POLY 150UF 20% 4V SMD 3798	150 µF, 4 V, polymer aluminum capacitor, D4 case family, low ESR type	Low-profile SMD polymer aluminum capacitor, stable capacitance characteristics, non-solid electrolyte-free polymer design	Mobile devices, embedded modules, DC/DC converter smoothing, dense power rails	Same capacitance and voltage rating; intended for similar low-voltage decoupling and smoothing functions	Manufacturer change, possible footprint and land-pattern differences, ESR/ripple current may not exactly match Panasonic SP-Cap UD	Good cross-manufacturer alternative when Panasonic supply is constrained and PCB validation is possible
Panasonic Electronic Components	EEF-CX0G151R EEF-CX0G151R Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 9389	150 µF, 4 V class, aluminum polymer SP-Cap, SMD package	Panasonic polymer capacitor, low ESR, compact power-rail filtering component	General-purpose low-voltage rails, converter outputs, local bulk decoupling	Same manufacturer, same nominal capacitance and voltage class, similar application space	Series CX behavior may differ from UD in ESR, ripple current, endurance, and mechanical details	Practical Panasonic same-voltage substitute when electrical simulation and layout fit checks pass

In practice, Panasonic EEF-SX0G151ER EEF-SX0G151ER Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 8043 and Panasonic EEF-SX0G151E7 EEF-SX0G151E7 Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 5249 are often the most natural same-voltage Panasonic replacement paths, while Panasonic EEF-CX0J151XR EEF-CX0J151XR Panasonic Electronic Components CAP ALUM POLY 150UF 20% 6.3V SMD 31623 is attractive when a higher 6.3 V rating supports the design’s derating policy. Murata ECASD40G157M016K00 ECASD40G157M016K00 Murata Electronics CAP ALUM POLY 150UF 20% 4V SMD 3798 is a useful cross-brand alternative, especially when procurement risk is the main issue, but it should be validated for footprint, soldering profile, and impedance behavior.

Comparing EEF-UD0G151XE Replacement Options by Fit, Performance, Risk, and Availability

A replacement capacitor should be selected by reviewing the full circuit role of Panasonic EEF-UD0G151XE. If the capacitor is part of a switching regulator output network, ESR and capacitance tolerance may affect loop stability. If it is used as local bulk decoupling, package size, ripple current, and temperature rise may be more relevant. If the product is already in production, mechanical drop-in compatibility and approved-vendor-list continuity may dominate the decision.

For a conservative replacement of Panasonic EEF-UD0G151XE, start by comparing EEF-SX0G151ER EEF-SX0G151ER Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 8043 and EEF-SX0G151E7 EEF-SX0G151E7 Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 5249 against the original land pattern, ESR, ripple current, and temperature-rise limits. If the design benefits from additional voltage headroom, EEF-CX0J151XR EEF-CX0J151XR Panasonic Electronic Components CAP ALUM POLY 150UF 20% 6.3V SMD 31623 may be a stronger engineering choice, provided its size and impedance profile are acceptable. For broader sourcing flexibility, Murata ECASD40G157M016K00 ECASD40G157M016K00 Murata Electronics CAP ALUM POLY 150UF 20% 4V SMD 3798 can be evaluated as a 150 µF 4 V polymer capacitor alternative, but it should go through PCB fit checks and electrical validation. EEF-CX0G151R EEF-CX0G151R Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 9389 is another Panasonic option when a same-voltage substitute is preferred and CX-series characteristics are acceptable.

For quotations and availability checks on Panasonic EEF-UD0G151XE replacement parts, including EEF-SX0G151ER EEF-SX0G151ER Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 8043 , EEF-CX0J151XR EEF-CX0J151XR Panasonic Electronic Components CAP ALUM POLY 150UF 20% 6.3V SMD 31623 , EEF-SX0G151E7 EEF-SX0G151E7 Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 5249 , ECASD40G157M016K00 ECASD40G157M016K00 Murata Electronics CAP ALUM POLY 150UF 20% 4V SMD 3798 , and EEF-CX0G151R EEF-CX0G151R Panasonic Electronic Components CAP ALUM POLY 150UF 20% 4V SMD 9389 , request pricing through IC-Components.com or email Info@IC-Components.com.