Equivalent & Substitute Parts for SLPX181M350A3P3

Part Overview

The SLPX181M350A3P3 is a 180 µF, 350 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This general-purpose component is actively available and maintains full ROHS3 compliance. Equivalent substitute parts are necessary to provide design flexibility, accommodate supply chain variations, and optimize performance characteristics for specific application requirements within equivalent electrical and mechanical specifications.

Substiute Parts

SLPX181M350A3P3

Cornell Dubilier Electronics (CDE)In Stock: 1145SLPX181M350A3P3 Datasheet

Current PartRFQ

LQS2V181MELZ30

NichiconIn Stock: 881LQS2V181MELZ30 Datasheet

UpgradeRFQ

LLS2V181MELZ

NichiconIn Stock: 1020LLS2V181MELZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SLPX181M350A3P3 are classified into two categories based on functional equivalence and performance characteristics:

Parametric Equivalent: LLS2V181MELZ (Nichicon) This part maintains strict electrical and mechanical equivalence with the main part. Both components share identical capacitance (180 µF), voltage rating (350 V), tolerance (±20%), package configuration (radial, can snap-in), physical dimensions (22.00 mm diameter, 32.00 mm height, 10.00 mm lead spacing), and operating temperature range (-25°C to 85°C). The lifetime specification is identical at 3000 hours at 85°C. Ripple current ratings at low frequency (1.34 A @ 120 Hz) are matched exactly.

Upgrade Substitute: LQS2V181MELZ30 (Nichicon) This part offers enhanced thermal performance characteristics while maintaining all core electrical parameters. It preserves the same capacitance (180 µF), voltage rating (350 V), tolerance (±20%), and physical footprint as the original design. The key distinction is an extended upper operating temperature limit of 105°C (compared to 85°C) and corresponding lifetime rating of 3000 hours at this elevated temperature. This substitution is applicable when thermal margin improvement is beneficial without modifying circuit layout.

All substitute relationships are strictly based on matching capacitance value, voltage rating, tolerance, package type, and physical dimensions. Both substitute parts are actively available and ROHS3 compliant.

Parameter Comparison

Engineering Selection Recommendations

LLS2V181MELZ is the primary parametric equivalent for direct substitution in applications where the original SLPX181M350A3P3 is currently specified. This Nichicon component provides functional identity across all electrical and mechanical parameters, enabling seamless integration without design modification. Both parts maintain identical operating temperature ranges and thermal stress profiles, supporting equivalent long-term reliability in circuit operation.

LQS2V181MELZ30 provides an alternative for applications benefiting from extended thermal operating margins. The 20°C increase in maximum operating temperature and corresponding thermal lifetime specification offer enhanced performance stability in elevated-temperature environments. Selection of this substitute should consider application thermal profiles to ensure the lower ripple current ratings (900 mA @ 120 Hz versus 1.34 A) remain compatible with circuit requirements.

All substitute parts are actively available in production status and maintain equivalent compliance certifications (ROHS3, REACH unaffected, EAR99, HTSUS 8532.22.0040).

Frequently Asked Questions (FAQ)

Q: Can LLS2V181MELZ be used as a drop-in replacement for SLPX181M350A3P3? A: Yes. The LLS2V181MELZ maintains identical electrical parameters (180 µF, 350 V, ±20%), physical dimensions (22.00 mm diameter, 32.00 mm height, 10.00 mm lead spacing), and operating temperature range (-25°C to 85°C). Direct substitution into existing PCB designs is supported.

Q: What is the primary difference between the two Nichicon substitutes? A: The LLS2V181MELZ operates at temperatures up to 85°C and represents a parametric equivalent. The LQS2V181MELZ30 extends the upper operating temperature to 105°C, providing enhanced thermal margin at the trade-off of lower ripple current ratings at low frequency (900 mA versus 1.34 A @ 120 Hz).

Q: Are all three parts mechanically identical? A: Yes. The SLPX181M350A3P3, LLS2V181MELZ, and LQS2V181MELZ30 share identical physical footprints (22.00 mm diameter, 32.00 mm seated height, 10.00 mm lead spacing) and package configuration (radial, can snap-in through-hole). PCB layout modifications are not required when substituting between these components.

Q: How do ripple current ratings affect component selection? A: Ripple current ratings define the maximum AC current the capacitor can conduct without exceeding design thermal limits. The original SLPX181M350A3P3 and LLS2V181MELZ both support 1.34 A @ 120 Hz ripple current. The LQS2V181MELZ30 is rated at 900 mA @ 120 Hz. Component selection must ensure circuit ripple current specifications do not exceed the substitute part's rating.

Q: Are all substitute parts RoHS compliant? A: Yes. The SLPX181M350A3P3, LLS2V181MELZ, and LQS2V181MELZ30 are all ROHS3 compliant. All substitute parts maintain REACH unaffected status and equivalent regulatory classification (EAR99, HTSUS 8532.22.0040).

Q: Can the LQS2V181MELZ30 be substituted in applications requiring the original temperature range? A: Yes. The LQS2V181MELZ30 operates across the full -25°C to 105°C range, which encompasses the -25°C to 85°C requirement of the original SLPX181M350A3P3. However, ripple current ratings must be verified, as the upgrade substitute is derated to 900 mA @ 120 Hz compared to 1.34 A in the original specification.