SLP151M315A3P3 Equivalent & Substitute Parts

Part Overview

The SLP151M315A3P3 is a 150 µF, 315 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is actively produced and widely available in inventory (1,092 pcs). Equivalent and substitute parts are necessary to provide design flexibility, ensure supply chain alternatives, and accommodate application-specific requirements such as higher voltage ratings or improved thermal performance characteristics.

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage Rating	315 V
Tolerance	±20%
ESR @ 120Hz	2.212 Ω
Lifetime @ 105°C	3000 Hrs
Operating Temperature Range	-25°C to 105°C
Ripple Current @ 120 Hz	820 mA
Ripple Current @ 20 kHz	1.21 A
Lead Spacing	0.394" (10.00 mm)
Diameter	0.866" (22.00 mm)
Height (Seated Max)	1.260" (32.00 mm)
Package Type	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

All substitute parts maintain the core functional equivalency defined by the following parameters:

Capacitance: 150 µF (exact match)
Tolerance: ±20% (exact match)
Polarization: Polar (exact match)
Package Type: Radial, Can - Snap-In (exact match)
Physical Dimensions: 0.394" lead spacing, 0.866" diameter, 1.260" maximum height (exact match)
Mounting Type: Through Hole (exact match)
Operating Temperature Range: -25°C to 105°C (all substitutes maintain or exceed this specification)
RoHS Compliance: ROHS3 Compliant (all substitutes maintain this certification)

The substitute parts differ in voltage rating (350 V or 400 V), which represents an upgrade path that maintains backward compatibility with the original 315 V specification. Higher voltage-rated capacitors can be directly substituted in applications without derating concerns.

Parameter Comparison

Parameter	SLP151M315A3P3 (CDE)	400VXH150MEFCSN22X30 (Rubycon)	B43508A9157M000 (EPCOS/TDK)	LGN2V151MELZ30 (Nichicon)
Capacitance	150 µF	150 µF	150 µF	150 µF
Voltage Rating	315 V	400 V	400 V	350 V
Tolerance	±20%	±20%	±20%	±20%
ESR	2.212 Ω @ 120 Hz	Not specified	0.820 Ω @ 100 Hz	Not specified
Lifetime @ 105°C	3000 Hrs	5000 Hrs	3000 Hrs	3000 Hrs
Operating Temperature	-25°C to 105°C	-25°C to 105°C	-40°C to 105°C	-25°C to 105°C
Ripple Current @ 120 Hz	820 mA	1.06 A	770 mA	820 mA
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Diameter	0.866" (22.00 mm)	0.866" (22.00 mm)	0.866" (22.00 mm)	0.866" (22.00 mm)
Height (Seated Max)	1.260" (32.00 mm)	1.260" (32.00 mm)	1.260" (32.00 mm)	1.260" (32.00 mm)
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed are active products with current manufacturing status and full ROHS3 compliance. The selection between SLP151M315A3P3 and its substitutes depends on application voltage margins and thermal lifetime requirements:

400VXH150MEFCSN22X30 (Rubycon VXH Series): Extended thermal lifetime of 5000 hours at 105°C provides superior long-term reliability compared to the original 3000-hour specification. The elevated voltage rating (400 V) offers additional design margin for peak voltage transient conditions.
B43508A9157M000 (EPCOS/TDK B43508 Series): Lowest ESR specification (0.820 Ω @ 100 Hz) among substitutes, reducing power dissipation in high-ripple-current applications. Extended operating temperature floor (-40°C) accommodates wider environmental ranges.
LGN2V151MELZ30 (Nichicon LGN Series): Voltage rating of 350 V provides modest upgrade margin while maintaining dimensional and electrical compatibility. Comparable ripple current handling (820 mA @ 120 Hz) matches the original part.

Frequently Asked Questions (FAQ)

Q: Can I substitute a higher voltage-rated capacitor for the SLP151M315A3P3 in my circuit? A: Yes. All listed substitutes feature voltage ratings of 350 V or 400 V, which exceed the original 315 V specification. Higher-rated capacitors are electrically compatible and provide enhanced margin against transient overvoltages without requiring circuit modifications.

Q: What is the significance of the different ESR values among substitutes? A: ESR (Equivalent Series Resistance) affects power dissipation and ripple current handling. The B43508A9157M000 exhibits the lowest ESR (0.820 Ω @ 100 Hz), making it advantageous for applications with stringent ripple current specifications or thermal constraints. However, all parts support the required ripple current parameters for general-purpose applications.

Q: Are the physical dimensions identical across all parts? A: Yes. All parts, including the original SLP151M315A3P3 and all substitutes, share identical package specifications: 0.394" lead spacing, 0.866" diameter, and 1.260" maximum seated height. Direct mechanical substitution is confirmed without PCB layout modifications.

Q: Which substitute offers the longest thermal lifetime? A: The 400VXH150MEFCSN22X30 (Rubycon VXH Series) provides 5000 hours at 105°C, compared to 3000 hours for the original part and other substitutes. This extended lifetime is relevant for applications subject to elevated ambient temperatures or continuous high-ripple-current operation.

Q: Are all substitutes RoHS3 compliant? A: Yes. All listed substitutes, along with the original SLP151M315A3P3, are RoHS3 compliant and REACH unaffected, meeting regulatory requirements for electronic component manufacturing and distribution.

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