SPA151M0ER Equivalent & Substitute Parts Reference

Part Overview

The SPA151M0ER is a 150 µF, 2.5 V aluminum polymer surface mount capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 2917 (7343 Metric) package. This component is classified as obsolete, indicating discontinued production and limited availability. The part is designed for general-purpose applications requiring low equivalent series resistance (9 mOhm) and compact form factor suitable for high-density PCB layouts.

Identifying equivalent and substitute parts is necessary due to the obsolete status of the SPA151M0ER. Direct replacements and functional alternatives from active manufacturers ensure design continuity, supply chain reliability, and access to components with improved performance characteristics or extended operational lifespans.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	150 µF	Must match exactly for circuit functionality
Voltage Rating	2.5 V	Minimum required; higher ratings acceptable if circuit permits
Tolerance	±20%	Must match or be tighter for circuit performance
ESR (Equivalent Series Resistance)	9 mOhm	Critical for ripple current handling and thermal performance
Package / Case	2917 (7343 Metric)	Must match for PCB footprint compatibility
Mounting Type	Surface Mount	Must match assembly process requirements
Operating Temperature Range	-40°C ~ 105°C	Minimum range required; wider ranges acceptable
Lifetime @ Temperature	1000 Hrs @ 105°C	Minimum acceptable; longer lifetimes provide design margin

Substitute Part Grouping Explanation

Substitution logic for the SPA151M0ER is based on strict electrical and mechanical parameter matching:

Direct Equivalents (Same Voltage Rating - 2.5 V):

EEF-SL0E151R (Panasonic): Identical capacitance, voltage, tolerance, ESR, and package. Obsolete status. Acceptable as direct replacement with identical electrical performance.
EEF-SX0E151ER (Panasonic): Identical capacitance, voltage, tolerance, ESR, and package. Active product status with extended lifetime (2000 Hrs @ 105°C) and wider operating temperature range (-55°C ~ 105°C). Superior performance characteristics.

Voltage-Upgraded Substitutes (Higher Voltage Ratings):

EEF-SX0G151ER (Panasonic): 150 µF at 4 V rating. Maintains identical capacitance, tolerance, ESR, and package. Active product with extended lifetime and wider temperature range. Suitable where circuit voltage permits.
EEF-SX0J151ER (Panasonic): 150 µF at 6.3 V rating. Maintains identical capacitance, tolerance, ESR, and package. Active product with extended lifetime and wider temperature range. Suitable where circuit voltage permits.

All substitutes maintain the 2917 (7343 Metric) package footprint, surface mount mounting type, and 9 mOhm ESR specification. Voltage-upgraded parts are interchangeable in applications where the circuit operates below the substitute part's rated voltage.

Parameter Comparison

Parameter	SPA151M0ER (CDE)	EEF-SL0E151R (Panasonic)	EEF-SX0E151ER (Panasonic)	EEF-SX0G151ER (Panasonic)	EEF-SX0J151ER (Panasonic)
Capacitance	150 µF	150 µF	150 µF	150 µF	150 µF
Voltage Rating	2.5 V	2.5 V	2.5 V	4 V	6.3 V
Tolerance	±20%	±20%	±20%	±20%	±20%
ESR @ 100 kHz	9 mOhm	9 mOhm	9 mOhm	9 mOhm	9 mOhm
Lifetime @ 105°C	1000 Hrs	1000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Package / Case	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Obsolete	Active	Active	Active
RoHS3 Compliance	Compliant	Not specified	Compliant	Compliant	Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): EEF-SX0E151ER is the primary recommended substitute. This Panasonic part maintains identical electrical specifications (150 µF, 2.5 V, 9 mOhm ESR) and package footprint while offering active product status, extended lifetime (2000 Hrs @ 105°C versus 1000 Hrs), and wider operating temperature range (-55°C ~ 105°C). RoHS3 compliance is confirmed.

For Voltage-Tolerant Applications: When circuit design permits operation at higher voltage ratings, EEF-SX0G151ER (4 V) or EEF-SX0J151ER (6.3 V) provide identical capacitance and ESR with improved reliability margins. Both are active products with extended lifetime and RoHS3 compliance. These selections are appropriate for designs with voltage headroom or where supply chain availability favors higher-rated components.

For Legacy System Maintenance: EEF-SL0E151R serves as an alternative direct equivalent with identical specifications to the original SPA151M0ER. However, this part is also obsolete. Selection of this substitute should be limited to applications where active product alternatives are unavailable or where exact historical matching is required.

All recommended substitutes maintain the 2917 (7343 Metric) surface mount package, ensuring PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can EEF-SX0G151ER or EEF-SX0J151ER be used in place of SPA151M0ER?

A: Yes, both parts are electrically compatible substitutes. The higher voltage ratings (4 V and 6.3 V respectively) do not prevent operation in circuits designed for 2.5 V operation. The capacitance (150 µF), tolerance (±20%), ESR (9 mOhm), and package footprint (2917 Metric) are identical. Verify that circuit design does not impose voltage-dependent performance requirements before selection.

Q: What is the difference between EEF-SL0E151R and EEF-SX0E151ER?

A: Both are 150 µF, 2.5 V, 9 mOhm parts in the 2917 package. Key differences are: EEF-SL0E151R is obsolete with 1000 Hrs lifetime at 105°C and -40°C ~ 105°C operating range. EEF-SX0E151ER is active with 2000 Hrs lifetime at 105°C and -55°C ~ 105°C operating range. EEF-SX0E151ER is the preferred choice for new designs and ongoing production.

Q: Are all substitute parts RoHS3 compliant?

A: EEF-SX0E151ER, EEF-SX0G151ER, and EEF-SX0J151ER are confirmed RoHS3 compliant. EEF-SL0E151R compliance status is not specified in available documentation. For applications requiring RoHS3 certification, select from the active Panasonic SP-Cap SX series parts.

Q: Does package height affect PCB assembly compatibility?

A: All parts use the 2917 (7343 Metric) package with surface mount land size 0.287" L x 0.169" W (7.30mm x 4.30mm). Height variations are minor: SPA151M0ER (1.90mm max), EEF-SL0E151R (1.80mm max), and EEF-SX series (2.00mm max). These differences do not affect PCB footprint compatibility or standard reflow assembly processes.

Q: What is the ripple current rating difference between parts?

A: SPA151M0ER specifies 3 A @ 100 kHz. EEF-SX0E151ER, EEF-SX0G151ER, and EEF-SX0J151ER specify 6.3 A @ 100 kHz. The higher ripple current capability of Panasonic substitutes provides additional thermal margin in high-frequency applications. EEF-SL0E151R ripple current is not specified.

Q: Can these parts be used interchangeably in production?

A: Yes, within the constraints of circuit voltage rating. All substitute parts maintain identical footprint, capacitance, tolerance, and ESR. Verify that your circuit operates at or below the substitute part's voltage rating. For production transitions, confirm that assembly equipment settings (reflow profile, placement parameters) remain unchanged, as package dimensions are equivalent.

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