SLP181M350E1P3 Equivalent & Substitute Parts

Part Overview

The SLP181M350E1P3 is a 180 µF, 350 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is classified as Active and is designed for general-purpose applications requiring through-hole mounting. The part operates across a temperature range of -25°C to 105°C with a rated lifetime of 3000 hours at 105°C.

Substitute parts become necessary when the original component reaches end-of-life status, when inventory constraints occur, or when design requirements call for enhanced electrical performance characteristics such as higher voltage ratings or extended operational lifetime.

Substiute Parts

SLP181M350E1P3

Cornell Dubilier Electronics (CDE)In Stock: 1251SLP181M350E1P3 Datasheet

Current PartRFQ

450MXG180MEFCSN30X25

RubyconIn Stock: 657007450MXG180MEFCSN30X25 Datasheet

UpgradeRFQ

LGX2G181MELB25

NichiconIn Stock: 1023LGX2G181MELB25 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SLP181M350E1P3 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Capacitance: 180 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Operating Temperature Range: -25°C to 105°C (exact match required)
• Package Type: Radial, Can - Snap-In (exact match required)
• Lead Spacing: 0.394" (10.00 mm) (exact match required)
• Physical Dimensions: 1.181" Dia (30.00 mm), Height 1.063" (27.00 mm) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Polarization: Polar (exact match required)

Allowable Variation Parameters:

• Voltage - Rated: Equal to or greater than 350 V
• Lifetime @ 105°C: Equal to or greater than 3000 hours
• Ripple Current: Equal to or greater than specified values
• ESR: Lower values are acceptable

Both substitute parts meet all critical matching parameters and provide equal or superior performance in allowable variation parameters.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are Active status components with full ROHS3 compliance and REACH Unaffected designation, matching the regulatory and compliance profile of the original SLP181M350E1P3.

450MXG180MEFCSN30X25 (Rubycon MXG Series): This substitute provides a 450 V rated voltage, representing a 100 V increase over the original 350 V specification. The component maintains identical 3000-hour lifetime at 105°C and delivers enhanced ripple current capacity at both low frequency (1.16 A @ 120 Hz) and high frequency (1.624 A @ 10 kHz) operation. Physical footprint and mounting characteristics are identical.

LGX2G181MELB25 (Nichicon LGX Series): This substitute provides a 400 V rated voltage, representing a 50 V increase over the original 350 V specification. The component offers extended operational lifetime of 5000 hours at 105°C, compared to the original 3000 hours. Ripple current capacity at low frequency is 1.02 A @ 120 Hz. Physical footprint and mounting characteristics are identical.

Both substitutes maintain full electrical and mechanical compatibility with the original design while offering performance enhancements in voltage rating and/or operational lifetime.

Frequently Asked Questions (FAQ)

Q: Can the 450MXG180MEFCSN30X25 be used as a direct replacement for the SLP181M350E1P3?

A: Yes. The 450MXG180MEFCSN30X25 maintains identical capacitance (180 µF), tolerance (±20%), operating temperature range (-25°C to 105°C), and physical dimensions (1.181" diameter, 1.063" height, 0.394" lead spacing). The higher 450 V rating provides additional voltage margin in the circuit. The snap-in package and through-hole mounting are identical.

Q: Can the LGX2G181MELB25 be used as a direct replacement for the SLP181M350E1P3?

A: Yes. The LGX2G181MELB25 maintains identical capacitance (180 µF), tolerance (±20%), operating temperature range (-25°C to 105°C), and physical dimensions (1.181" diameter, 1.063" height, 0.394" lead spacing). The higher 400 V rating provides additional voltage margin. The extended 5000-hour lifetime at 105°C exceeds the original 3000-hour specification. The snap-in package and through-hole mounting are identical.

Q: What are the physical compatibility requirements for substitution?

A: All substitute parts must match the following physical parameters: 1.181" diameter (30.00 mm), 1.063" maximum seated height (27.00 mm), 0.394" lead spacing (10.00 mm), radial can snap-in package type, and through-hole mounting configuration. Both substitute parts meet these requirements.

Q: Are there differences in ripple current handling between the original and substitute parts?

A: Yes. The original SLP181M350E1P3 specifies 900 mA @ 120 Hz and 1.32 A @ 20 kHz. The 450MXG180MEFCSN30X25 provides 1.16 A @ 120 Hz and 1.624 A @ 10 kHz. The LGX2G181MELB25 provides 1.02 A @ 120 Hz and 1.4586 A @ 50 kHz. All substitute parts deliver equal or superior ripple current capacity.

Q: Do all parts meet the same regulatory compliance standards?

A: Yes. The original SLP181M350E1P3 and both substitute parts are ROHS3 Compliant and REACH Unaffected. All components carry identical regulatory status.

Q: What is the significance of the voltage rating difference?

A: The substitute parts feature higher voltage ratings (450 V and 400 V respectively) compared to the original 350 V specification. Higher voltage ratings provide additional safety margin and allow operation in circuits with higher voltage transients or design headroom. The substitutes are electrically compatible with circuits designed for 350 V operation.

Q: Is ESR (Equivalent Series Resistance) a factor in substitution?

A: The original SLP181M350E1P3 specifies 1.843 Ohm @ 120 Hz. ESR data is not provided for the substitute parts. Lower ESR values are generally beneficial for ripple current handling and thermal performance. The absence of specified ESR data for substitutes does not preclude their use as direct replacements.