EEF-UD0E151R Equivalent & Substitute Parts

Part Overview

The EEF-UD0E151R is a 150 µF, 2.5 V aluminum polymer capacitor in 2917 (7343 Metric) surface mount package manufactured by Panasonic Electronic Components. This part is classified as obsolete, making identification of suitable alternatives necessary for ongoing production and design updates. The capacitor is designed for general-purpose applications requiring low equivalent series resistance and compact form factor.

Substiute Parts

EEF-UD0E151R

Panasonic Electronic ComponentsIn Stock: 859EEF-UD0E151R Datasheet

Current PartRFQ

EEF-CX0G151R

Panasonic Electronic ComponentsIn Stock: 21692EEF-CX0G151R Datasheet

UpgradeRFQ

EEF-CX0J151R

Panasonic Electronic ComponentsIn Stock: 773EEF-CX0J151R Datasheet

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EEF-SL0E151R

Panasonic Electronic ComponentsIn Stock: 2224EEF-SL0E151R Datasheet

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EEF-SX0E151ER

Panasonic Electronic ComponentsIn Stock: 1168EEF-SX0E151ER Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the EEF-UD0E151R is determined by the following criteria:

Mandatory Compatibility Parameters:

• Capacitance: 150 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)

Allowable Variation Parameters:

• Voltage Rating: Equal to or greater than 2.5 V
• ESR: Equal to or less than 15 mOhm
• Lifetime @ Temperature: Equal to or greater than 1000 Hrs @ 105°C
• Operating Temperature Range: Equal to or wider than -40°C ~ 105°C

Substitute parts are grouped into two categories: upgrade substitutes (higher voltage rating with improved specifications) and similar substitutes (equivalent voltage rating with enhanced performance characteristics).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Voltage Rating): EEF-SX0E151ER is the primary substitute for EEF-UD0E151R. Both maintain 2.5 V voltage rating and 150 µF capacitance. EEF-SX0E151ER offers improved specifications: lower ESR (9 mOhm vs. 15 mOhm), extended lifetime (2000 Hrs vs. 1000 Hrs @ 105°C), wider operating temperature range (-55°C ~ 105°C vs. -40°C ~ 105°C), and active product status with RoHS3 compliance.

For Voltage Margin Applications: EEF-CX0G151R (4 V) and EEF-CX0J151R (6.3 V) are upgrade substitutes suitable for applications where higher voltage headroom is beneficial. Both are active products with RoHS3 compliance, 2000 Hrs lifetime @ 105°C, and extended temperature range (-55°C ~ 105°C). These parts maintain identical capacitance and ESR specifications while providing voltage derating margin.

Compliance Considerations: EEF-SX0E151ER, EEF-CX0G151R, and EEF-CX0J151R are all RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements. All substitute parts are classified as active products, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can EEF-CX0G151R or EEF-CX0J151R be used in place of EEF-UD0E151R? A: Yes. Both parts are electrically compatible substitutes. The higher voltage ratings (4 V and 6.3 V respectively) exceed the 2.5 V requirement of the original part. Circuit operation is unaffected when a higher-rated voltage capacitor is used in a lower-voltage application. Both parts offer improved specifications including extended lifetime and wider operating temperature range.

Q: What is the difference between EEF-SX0E151ER and EEF-SL0E151R? A: Both maintain identical voltage rating (2.5 V) and capacitance (150 µF). EEF-SX0E151ER is the active product with 2000 Hrs lifetime @ 105°C, while EEF-SL0E151R is obsolete with 1000 Hrs lifetime. EEF-SX0E151ER also features lower ESR (9 mOhm vs. 15 mOhm in the original EEF-UD0E151R) and wider operating temperature range (-55°C ~ 105°C vs. -40°C ~ 105°C).

Q: Are there packaging differences between substitute parts? A: Yes. EEF-UD0E151R uses standard packaging. EEF-CX0G151R and EEF-CX0J151R are supplied in Tape & Reel (TR) format. EEF-SL0E151R uses Cut Tape (CT) & Digi-Reel® packaging. EEF-SX0E151ER is supplied in Tape & Reel (TR). All parts use identical 2917 (7343 Metric) surface mount package dimensions, ensuring PCB footprint compatibility.

Q: Which substitute offers the best long-term availability? A: EEF-SX0E151ER, EEF-CX0G151R, and EEF-CX0J151R are all active products with confirmed inventory levels (1071, 21633, and 745 units respectively). These three parts are recommended for new designs and ongoing production requiring supply chain stability.

Q: Does ESR difference affect circuit performance? A: ESR affects ripple current handling and thermal performance. Lower ESR values (9 mOhm in EEF-SX0E151ER vs. 15 mOhm in EEF-UD0E151R) result in reduced heat generation and improved high-frequency ripple current capability. For general-purpose applications, both ESR values are acceptable. Applications with high ripple current requirements benefit from the lower ESR of EEF-SX0E151ER.