SLP151M400E1P3 Equivalent & Substitute Parts

Part Overview

The SLP151M400E1P3 is a 150 µF, 400 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is rated for general-purpose applications with a 3000-hour lifetime at 105°C and an operating temperature range of -25°C to 105°C. The part is Active in product status and ROHS3 compliant.

Substitute parts are identified when equivalent capacitance, voltage rating, tolerance, package type, and mechanical dimensions align with the original specification. Higher voltage-rated alternatives (450 V) provide direct substitution capability while maintaining all mechanical and electrical compatibility parameters.

Key Parameters

Parameter	SLP151M400E1P3
Capacitance	150 µF
Voltage - Rated	400 V
Tolerance	±20%
Package / Case	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Size / Dimension	1.181" Dia (30.00 mm)
Height - Seated (Max)	1.063" (27.00 mm)
Mounting Type	Through Hole
Operating Temperature	-25°C ~ 105°C
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SLP151M400E1P3 are qualified based on the following criteria:

Mandatory Matching Parameters:

Capacitance: 150 µF (exact match)
Tolerance: ±20% (exact match)
Package / Case: Radial, Can - Snap-In (exact match)
Lead Spacing: 0.394" (10.00 mm) (exact match)
Size / Dimension: 1.181" Dia (30.00 mm) (exact match)
Height - Seated (Max): 1.063" (27.00 mm) (exact match)
Mounting Type: Through Hole (exact match)
Operating Temperature: -25°C ~ 105°C (exact match)
Polarization: Polar (exact match)

Allowable Variation:

Voltage - Rated: 450 V substitutes are acceptable for 400 V applications (higher voltage rating provides margin)

All substitute parts listed maintain identical mechanical compatibility and electrical characteristics within the specified tolerance band. Voltage rating upgrades from 400 V to 450 V do not compromise circuit performance and provide enhanced reliability margin.

Parameter Comparison

Parameter	SLP151M400E1P3 (CDE)	450VXG150MEFC30X25 (Rubycon)	450VXG150MEFCSN30X25 (Rubycon)	LGN2W151MELB25 (Nichicon)	LGX2W151MELB25 (Nichicon)	LQS2W151MELB25 (Nichicon)
Capacitance	150 µF	150 µF	150 µF	150 µF	150 µF	150 µF
Voltage - Rated	400 V	450 V	450 V	450 V	450 V	450 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Size / Dimension	1.181" Dia (30.00 mm)	1.181" Dia (30.00 mm)	1.181" Dia (30.00 mm)	1.181" Dia (30.00 mm)	1.181" Dia (30.00 mm)	1.181" Dia (30.00 mm)
Height - Seated (Max)	1.063" (27.00 mm)	1.063" (27.00 mm)	1.063" (27.00 mm)	1.063" (27.00 mm)	1.063" (27.00 mm)	1.063" (27.00 mm)
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Operating Temperature	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C
Polarization	Polar	Polar	Polar	Polar	Polar	Polar
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Lifetime @ Temp.	3000 Hrs @ 105°C	5000 Hrs @ 105°C	5000 Hrs @ 105°C	3000 Hrs @ 105°C	5000 Hrs @ 105°C	3000 Hrs @ 105°C

Engineering Selection Recommendations

All substitute parts listed are Active in product status and ROHS3 compliant, meeting current regulatory requirements. Selection among qualified substitutes is based on availability and application-specific performance requirements.

Rubycon 450VXG Series (450VXG150MEFC30X25 and 450VXG150MEFCSN30X25): These parts provide 5000-hour lifetime at 105°C, exceeding the original 3000-hour specification. Both variants are mechanically and electrically interchangeable with the SLP151M400E1P3.

Nichicon LGN Series (LGN2W151MELB25): This part matches the original 3000-hour lifetime specification at 105°C while providing 450 V voltage rating. Ripple current performance at 120 Hz is 790 mA.

Nichicon LGX Series (LGX2W151MELB25): This part provides extended 5000-hour lifetime at 105°C with improved ripple current handling at 120 Hz (930 mA) compared to the LGN series.

Nichicon LQS Series (LQS2W151MELB25): This part matches the original 3000-hour lifetime specification at 105°C with ripple current performance identical to the LGN series at 120 Hz (790 mA).

All substitute parts maintain identical mechanical footprint, lead spacing, and mounting compatibility with the original SLP151M400E1P3 specification.

Frequently Asked Questions (FAQ)

Q: Can a 450 V rated capacitor replace a 400 V rated capacitor?

A: Yes. A higher voltage rating provides additional safety margin and does not degrade circuit performance. The 450 V substitutes are fully compatible with 400 V circuit applications.

Q: Are all substitute parts mechanically identical to the SLP151M400E1P3?

A: Yes. All substitute parts share identical lead spacing (0.394" / 10.00 mm), case diameter (1.181" / 30.00 mm), seated height (1.063" / 27.00 mm), and snap-in mounting configuration. Direct board-level substitution is supported without layout modification.

Q: What is the difference between the Rubycon and Nichicon substitute options?

A: Both manufacturers provide 450 V, 150 µF snap-in capacitors with identical mechanical dimensions. Rubycon VXG series offers 5000-hour lifetime. Nichicon provides three series options: LGN and LQS with 3000-hour lifetime, and LGX with 5000-hour lifetime. Selection depends on application lifetime requirements and availability.

Q: Does the ±20% tolerance apply to all substitute parts?

A: Yes. All substitute parts maintain ±20% capacitance tolerance, identical to the original SLP151M400E1P3 specification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What is the difference between 450VXG150MEFC30X25 and 450VXG150MEFCSN30X25?

A: Both parts are Rubycon VXG series 150 µF, 450 V snap-in capacitors with identical electrical and mechanical specifications. The designation difference reflects internal manufacturing variants. Both are fully interchangeable for the SLP151M400E1P3 application.

Q: Can I use a substitute part with extended lifetime (5000 hours) in place of the original 3000-hour part?

A: Yes. Extended lifetime specifications provide enhanced reliability and do not introduce compatibility issues. The LGX2W151MELB25 and both Rubycon VXG variants offer 5000-hour lifetime while maintaining all other electrical and mechanical parameters.

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