SPA151M02B Equivalent & Substitute Parts Reference

Part Overview

The SPA151M02B is a 150 µF, 2 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 in the supply chain. The part operates across a temperature range of -40°C to 105°C with a rated lifetime of 1000 hours at 105°C and an equivalent series resistance (ESR) of 9 mOhm. Identification of equivalent and substitute parts is necessary due to the obsolete status, which restricts procurement options and may impact long-term supply chain reliability for new designs or production runs.

Substiute Parts

SPA151M02B

Cornell Dubilier Electronics (CDE)In Stock: 1004SPA151M02B Datasheet

Current PartRFQ

ECASD40D157M009K00

Murata ElectronicsIn Stock: 3263ECASD40D157M009K00 Datasheet

DirectRFQ

EEF-SL0E151R

Panasonic Electronic ComponentsIn Stock: 2224EEF-SL0E151R Datasheet

UpgradeRFQ

EEF-SX0E151ER

Panasonic Electronic ComponentsIn Stock: 1168EEF-SX0E151ER Datasheet

UpgradeRFQ

EEF-SX0G151ER

Panasonic Electronic ComponentsIn Stock: 11954EEF-SX0G151ER Datasheet

UpgradeRFQ

EEF-SX0J151ER

Panasonic Electronic ComponentsIn Stock: 30687EEF-SX0J151ER Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SPA151M02B are classified based on strict electrical and mechanical compatibility criteria. The primary substitution logic is determined by the following parameters:

Critical Matching 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)
• ESR: 9 mOhm (exact match required)
• Type: Aluminum Polymer (exact match required)

Allowable Variation Parameters:

• Voltage Rating: Substitutes may have equal or higher voltage ratings (2 V, 2.5 V, 4 V, or 6.3 V)
• Lifetime @ Temperature: Substitutes may have equal or extended lifetime ratings (1000 Hrs or 2000 Hrs @ 105°C)
• Operating Temperature Range: Substitutes may have equal or extended temperature ranges (-40°C ~ 105°C or -55°C ~ 105°C)
• Ripple Current: Substitutes may have equal or higher ripple current ratings (3 A or 6.3 A @ 100 kHz)
• Product Status: Substitutes may be active or obsolete
• Manufacturer: Different manufacturers are acceptable provided all electrical and mechanical parameters align

Substitutes are organized into two categories: direct equivalents (matching all parameters including voltage) and upgrades (higher voltage ratings or extended lifetime specifications).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same Voltage Rating):

ECASD40D157M009K00 (Murata Electronics) is a direct electrical equivalent to the SPA151M02B. Both parts share identical capacitance (150 µF), voltage rating (2 V), tolerance (±20%), ESR (9 mOhm), lifetime (1000 Hrs @ 105°C), and operating temperature range (-40°C ~ 105°C). The package footprint and mounting type are identical. Both parts are ROHS3 compliant. The primary difference is a marginal increase in seated height (0.075" versus 0.071"), which may require verification in space-constrained applications. This part is also obsolete, limiting long-term availability.

Upgrade Options (Higher Voltage Ratings with Extended Lifetime):

The Panasonic SP-Cap SX series parts (EEF-SX0E151ER, EEF-SX0G151ER, EEF-SX0J151ER) offer significant advantages over the original SPA151M02B:

• EEF-SX0E151ER (2.5 V rating): Provides a 0.5 V voltage margin above the original specification while extending lifetime to 2000 Hrs @ 105°C and expanding the operating temperature range to -55°C ~ 105°C. Ripple current capacity increases to 6.3 A @ 100 kHz. Product status is active, ensuring continued availability. ROHS3 compliant and REACH unaffected.

• EEF-SX0G151ER (4 V rating): Provides a 2 V voltage margin above the original specification with identical lifetime and temperature range extensions as the 2.5 V variant. Highest inventory availability (11,908 pcs). Active product status.

• EEF-SX0J151ER (6.3 V rating): Provides maximum voltage margin (4.3 V above original) with identical performance enhancements. Highest inventory availability (30,612 pcs). Active product status.

All Panasonic SP-Cap SX variants maintain the same package footprint, ESR, and capacitance as the original part. The increase in seated height (0.079" versus 0.071") requires clearance verification in PCB designs.

Panasonic SP-Cap SL Variant:

EEF-SL0E151R (2.5 V rating) is an obsolete Panasonic part offering a 0.5 V voltage margin with 1000 Hrs @ 105°C lifetime (matching the original). Operating temperature range remains -40°C ~ 105°C. Seated height matches the original (0.071"). This part provides a minimal upgrade path with limited availability.

Selection Criteria:

For new designs or production runs requiring long-term supply chain stability, the active Panasonic SP-Cap SX series (EEF-SX0E151ER, EEF-SX0G151ER, or EEF-SX0J151ER) is recommended. Voltage rating selection depends on circuit requirements: use the lowest voltage rating that exceeds the maximum operating voltage in the application to optimize cost and performance. For applications with strict height constraints, verify the 0.008" (0.20 mm) increase in seated height against PCB clearance specifications.

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a substitute for the SPA151M02B?

A: Yes. Higher voltage-rated capacitors are electrically compatible substitutes provided all other parameters (capacitance, tolerance, ESR, package, mounting type) remain identical. A 2.5 V, 4 V, or 6.3 V rated capacitor will function correctly in a 2 V application. Higher voltage ratings provide additional safety margin and do not degrade circuit performance.

Q: What is the difference between the Murata ECASD40D157M009K00 and the Panasonic EEF-SX0E151ER?

A: Both are 150 µF aluminum polymer capacitors in the 2917 package with 9 mOhm ESR. The Murata part matches the original 2 V voltage rating and 1000 Hrs @ 105°C lifetime but is obsolete. The Panasonic part offers a 2.5 V voltage rating, extended 2000 Hrs @ 105°C lifetime, expanded temperature range (-55°C ~ 105°C), and active product status. The Panasonic part is taller by 0.008" (0.20 mm).

Q: Does the increase in seated height from 0.071" to 0.079" affect PCB compatibility?

A: The 0.008" (0.20 mm) height increase must be verified against PCB design clearances, particularly in applications with height-constrained layouts or conformal coating requirements. Measure available clearance above the component mounting location. If clearance is less than 0.079", the original height or the Panasonic SP-Cap SL variant (0.071" height) must be used.

Q: Why are the Panasonic SP-Cap SX parts (EEF-SX0E151ER, EEF-SX0G151ER, EEF-SX0J151ER) recommended over the direct equivalent?

A: The Panasonic SP-Cap SX series offers active product status, ensuring long-term availability and supply chain reliability. Extended lifetime (2000 Hrs @ 105°C versus 1000 Hrs) and expanded operating temperature range (-55°C ~ 105°C versus -40°C ~ 105°C) provide design margin for demanding applications. Higher ripple current capacity (6.3 A @ 100 kHz versus 3 A) supports increased circuit stress tolerance.

Q: Can I substitute EEF-SX0J151ER (6.3 V) for SPA151M02B (2 V) without circuit modifications?

A: Yes. The EEF-SX0J151ER is a direct functional substitute. All electrical parameters (capacitance, tolerance, ESR) are identical. The 6.3 V rating is compatible with 2 V applications and provides additional voltage margin. No circuit modifications are required. Verify PCB clearance for the increased height (0.079" versus 0.071").

Q: What is the significance of the "Active" product status for EEF-SX0E151ER, EEF-SX0G151ER, and EEF-SX0J151ER?

A: Active product status indicates ongoing manufacturing and distribution by Panasonic Electronic Components. These parts are available through authorized distributors and are suitable for new designs, production runs, and long-term applications. Obsolete parts (SPA151M02B, ECASD40D157M009K00, EEF-SL0E151R) have discontinued production and limited inventory, making them unsuitable for new designs.

Q: Are all substitute parts ROHS3 compliant?

A: The SPA151M02B, ECASD40D157M009K00, EEF-SX0E151ER, EEF-SX0G151ER, and EEF-SX0J151ER are confirmed ROHS3 compliant. RoHS compliance status for EEF-SL0E151R is not specified in the provided data. Verify compliance documentation with the supplier if regulatory certification is required.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?

A: Both packaging formats are suitable for automated assembly. Cut Tape (CT) & Digi-Reel® provides flexibility for smaller production quantities and manual handling. Tape & Reel (TR) is optimized for high-volume automated pick-and-place assembly. Packaging format does not affect electrical or mechanical compatibility; selection depends on production volume and assembly equipment capabilities.

Q: Which substitute part has the highest inventory availability?

A: EEF-SX0J151ER (Panasonic, 6.3 V rating) has the highest inventory availability with 30,612 pieces in stock, followed by EEF-SX0G151ER (11,908 pieces) and ECASD40D157M009K00 (3,200 pieces). The original SPA151M02B has 900 pieces available.