SLP271M350C7P3 Equivalent & Substitute Parts

Part Overview

The SLP271M350C7P3 is a 270 µF, 350 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 status and ROHS3 compliant.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this product category. Substitution becomes necessary due to inventory availability, supply chain optimization, or design flexibility requirements while maintaining circuit performance and reliability standards.

Key Parameters

Parameter	Value	Unit
Capacitance	270	µF
Voltage - Rated	350	V
Tolerance	±20%	-
ESR @ 120Hz	1.229	Ohm
Lifetime @ 105°C	3000	Hrs
Operating Temperature Range	-25 to 105	°C
Lead Spacing	10.00	mm
Diameter	25.00	mm
Height - Seated (Max)	42.00	mm
Mounting Type	Through Hole	-
Package / Case	Radial, Can - Snap-In	-
Polarization	Polar	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the SLP271M350C7P3 are grouped based on the following substitution criteria:

Primary Substitution Parameters:

Capacitance: 270 µF (fixed)
Tolerance: ±20% (fixed)
Lead Spacing: 10.00 mm (fixed)
Diameter: 25.00 mm (fixed)
Height - Seated (Max): 42.00 mm (fixed)
Mounting Type: Through Hole (fixed)
Package / Case: Radial, Can - Snap-In (fixed)
Polarization: Polar (fixed)

Allowable Variation Parameters:

Voltage - Rated: Equal to or greater than 350 V
Lifetime @ 105°C: Equal to or greater than 3000 Hrs
Operating Temperature Range: Must encompass -25°C to 105°C minimum
ESR: Lower values are acceptable
Ripple Current: Higher values are acceptable

All substitute parts maintain identical mechanical dimensions and mounting characteristics, ensuring direct board-level compatibility. Voltage ratings of 400 V, 420 V, and 450 V are acceptable as they provide equal or superior voltage stress margin. Extended lifetime ratings (5000 Hrs) represent performance enhancements over the base specification.

Parameter Comparison

Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance	Lifetime @ 105°C (Hrs)	Operating Temp (°C)	Lead Spacing (mm)	Diameter (mm)	Height (mm)	RoHS Status
SLP271M350C7P3	Cornell Dubilier	270	350	±20%	3000	-25 to 105	10.00	25.00	42.00	ROHS3
420MXG270MEFCSN25X40	Rubycon	270	420	±20%	3000	-25 to 105	10.00	25.00	42.00	ROHS3
420VXH270MEFCSN25X40	Rubycon	270	420	±20%	5000	-25 to 105	10.00	25.00	42.00	ROHS3
450MXG270MEFCSN25X40	Rubycon	270	450	±20%	3000	-25 to 105	10.00	25.00	42.00	ROHS3
ELHS451VSN271MQ40S	Chemi-Con	270	450	±20%	5000	-40 to 105	10.00	25.40	42.50	RoHS Compliant
LGN2G271MELA40	Nichicon	270	400	±20%	3000	-25 to 105	10.00	25.00	42.00	ROHS3
LGNW6271MELA40	Nichicon	270	420	±20%	3000	-25 to 105	10.00	25.00	42.00	ROHS3
LQS2G271MELA40	Nichicon	270	400	±20%	3000	-25 to 105	10.00	25.00	42.00	ROHS3
LQSW6271MELA40	Nichicon	270	420	±20%	3000	-25 to 105	10.00	25.00	42.00	ROHS3

Engineering Selection Recommendations

Voltage Rating Selection: All substitute parts maintain voltage ratings equal to or exceeding the original 350 V specification. Parts rated at 400 V, 420 V, and 450 V provide increased voltage margin and are electrically compatible with circuits designed for 350 V operation.

Lifetime and Reliability: The base specification requires 3000 hours at 105°C. Substitute parts offering 5000-hour ratings (420VXH270MEFCSN25X40, ELHS451VSN271MQ40S) provide extended operational life without circuit modification.

Compliance and Certifications: All substitute parts maintain ROHS3 compliance or equivalent RoHS certification status. REACH compliance is consistent across all options. ECCN and HTSUS classifications remain unchanged.

Mechanical Compatibility: All substitute parts feature identical lead spacing (10.00 mm), diameter (25.00 mm), and height (42.00 mm) specifications, with the exception of ELHS451VSN271MQ40S, which exhibits minor dimensional variations (diameter 25.40 mm, height 42.50 mm). These variations remain within standard PCB footprint tolerances for snap-in capacitor mounting.

Temperature Range Considerations: The base part operates from -25°C to 105°C. ELHS451VSN271MQ40S extends the lower operating limit to -40°C, providing enhanced cold-temperature performance when required.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 420 V or 450 V rated capacitor for the original 350 V part?

A: Yes. Higher voltage-rated capacitors are electrically compatible with circuits designed for lower voltage operation. The 420 V and 450 V rated substitutes provide additional voltage stress margin and are direct functional replacements.

Q: What is the difference between the Rubycon MXG and VXH series?

A: Both series maintain identical electrical and mechanical specifications at their respective voltage ratings. The VXH series (420VXH270MEFCSN25X40) offers extended lifetime (5000 Hrs @ 105°C) compared to the MXG series (3000 Hrs @ 105°C).

Q: Are Nichicon LGN and LQS series parts interchangeable?

A: Yes. Both Nichicon series maintain identical capacitance, voltage, tolerance, and mechanical dimensions. Selection between series depends on inventory availability and supply chain requirements.

Q: Does the ELHS451VSN271MQ40S dimensional variation affect PCB compatibility?

A: The ELHS451VSN271MQ40S exhibits minor dimensional differences (diameter 25.40 mm vs. 25.00 mm, height 42.50 mm vs. 42.00 mm). These variations remain within standard PCB footprint tolerances for radial snap-in capacitor mounting and do not prevent board-level installation.

Q: Which substitute part offers the best reliability for extended operation?

A: Parts with 5000-hour lifetime ratings at 105°C (420VXH270MEFCSN25X40 and ELHS451VSN271MQ40S) provide extended operational life compared to the base 3000-hour specification.

Q: Can I use a substitute part with a lower voltage rating than 350 V?

A: No. All substitute parts must maintain voltage ratings equal to or greater than 350 V to ensure adequate voltage stress margin and circuit safety.

Q: What is the significance of the ±20% tolerance specification?

A: The ±20% tolerance indicates that actual capacitance values may range from 216 µF to 324 µF. All substitute parts maintain this identical tolerance specification, ensuring equivalent circuit performance characteristics.

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