SLPX271M385C7P3

Part Overview

The SLPX271M385C7P3 is a 270 µF, 385 V aluminum electrolytic capacitor with radial, can snap-in package from Cornell Dubilier Electronics (CDE). This through-hole component is rated for 3000 hours at 85°C and is ROHS3 compliant, suitable for general purpose applications. Substitute parts are necessary to address component availability, enhanced performance specifications, extended operational temperature ranges, or improved lifetime ratings.

Key Parameters

Parameter	Value
Capacitance	270 µF
Voltage Rating	385 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	10.00 mm
Diameter	25.00 mm
Height (Max)	42.00 mm
Mounting Type	Through Hole
Lifetime @ Temperature	3000 Hrs @ 85°C
Operating Temperature Range	-25°C to 85°C
ESR @ 120 Hz	737 mOhm
Ripple Current @ 120 Hz	1.61 A
Ripple Current @ 20 kHz	2.37 A
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SLPX271M385C7P3 are selected based on the following critical parameters:

Mandatory Compatibility Parameters:

Capacitance: 270 µF (all substitutes)
Tolerance: ±20% (all substitutes)
Package: Radial, Can - Snap-In (all substitutes)
Lead Spacing: 10.00 mm (all substitutes)
Physical Dimensions: 25.00 mm diameter × 42.00 mm height (all substitutes)
Mounting Type: Through Hole (all substitutes)

Voltage Rating Substitution Logic: Substitutes are grouped by voltage rating, which must be equal to or greater than the 385 V rating of the original part. Substitutes at higher voltage ratings (400 V, 420 V, 450 V) are electrically compatible and provide equivalent or superior performance in the original application.

Temperature and Lifetime Considerations: Substitutes offer either equivalent or enhanced lifetime ratings at higher operating temperatures. The original part is rated for 3000 hours at 85°C. Substitutes provide ratings ranging from 3000 to 5000 hours at operating temperatures up to 105°C, with some supporting extended temperature ranges to -40°C.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage Rating	Tolerance	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Size (Dia)	Height (Max)	RoHS Status
SLPX271M385C7P3	Cornell Dubilier Electronics	SLPX	270 µF	385 V	±20%	3000 Hrs @ 85°C	-25°C ~ 85°C	10.00 mm	25.00 mm	42.00 mm	ROHS3
420MXG270MEFCSN25X40	Rubycon	MXG	270 µF	420 V	±20%	3000 Hrs @ 105°C	-25°C ~ 105°C	10.00 mm	25.00 mm	42.00 mm	ROHS3
420VXH270MEFCSN25X40	Rubycon	VXH	270 µF	420 V	±20%	5000 Hrs @ 105°C	-25°C ~ 105°C	10.00 mm	25.00 mm	42.00 mm	ROHS3
450MXG270MEFCSN25X40	Rubycon	MXG	270 µF	450 V	±20%	3000 Hrs @ 105°C	-25°C ~ 105°C	10.00 mm	25.00 mm	42.00 mm	ROHS3
450USG270MEFCSN25X40	Rubycon	USG	270 µF	450 V	±20%	3000 Hrs @ 85°C	-25°C ~ 85°C	10.00 mm	25.00 mm	42.00 mm	ROHS3
ELHS451VSN271MQ40S	Chemi-Con	LHS	270 µF	450 V	±20%	5000 Hrs @ 105°C	-40°C ~ 105°C	10.00 mm	25.40 mm	42.50 mm	RoHS Compliant
LGN2G271MELA40	Nichicon	LGN	270 µF	400 V	±20%	3000 Hrs @ 105°C	-25°C ~ 105°C	10.00 mm	25.00 mm	42.00 mm	ROHS3
LGNW6271MELA40	Nichicon	LGN	270 µF	420 V	±20%	3000 Hrs @ 105°C	-25°C ~ 105°C	10.00 mm	25.00 mm	42.00 mm	ROHS3
LQS2G271MELA40	Nichicon	LQS	270 µF	400 V	±20%	3000 Hrs @ 105°C	-25°C ~ 105°C	10.00 mm	25.00 mm	42.00 mm	ROHS3
LQSW6271MELA40	Nichicon	LQS	270 µF	420 V	±20%	3000 Hrs @ 105°C	-25°C ~ 105°C	10.00 mm	25.00 mm	42.00 mm	ROHS3

Engineering Selection Recommendations

Direct Equivalents (385 V Voltage Class): No direct 385 V equivalents are listed. All substitutes operate at voltage ratings of 400 V or higher, which are electrically compatible with the original 385 V application.

Recommended Substitutes by Application Requirements:

For Standard Performance (3000 Hour Lifetime):

420MXG270MEFCSN25X40 (Rubycon): 420 V rating, 3000 Hrs @ 105°C, operating to 105°C. ROHS3 compliant.
LGN2G271MELA40 (Nichicon): 400 V rating, 3000 Hrs @ 105°C, operating to 105°C. ROHS3 compliant.
LGNW6271MELA40 (Nichicon): 420 V rating, 3000 Hrs @ 105°C, operating to 105°C. ROHS3 compliant.
LQS2G271MELA40 (Nichicon): 400 V rating, 3000 Hrs @ 105°C, operating to 105°C. ROHS3 compliant.
LQSW6271MELA40 (Nichicon): 420 V rating, 3000 Hrs @ 105°C, operating to 105°C. ROHS3 compliant.

For Enhanced Reliability (5000 Hour Lifetime):

420VXH270MEFCSN25X40 (Rubycon): 420 V rating, 5000 Hrs @ 105°C, operating to 105°C. ROHS3 compliant.
ELHS451VSN271MQ40S (Chemi-Con): 450 V rating, 5000 Hrs @ 105°C, operating to -40°C. RoHS compliant. Note: Physical dimensions are 25.40 mm diameter × 42.50 mm height.

For Higher Voltage Margin (450 V):

450MXG270MEFCSN25X40 (Rubycon): 450 V rating, 3000 Hrs @ 105°C, operating to 105°C. ROHS3 compliant.
450USG270MEFCSN25X40 (Rubycon): 450 V rating, 3000 Hrs @ 85°C, operating to 85°C. ROHS3 compliant. Temperature range equivalent to original part.

All listed substitutes are Active status and comply with REACH Unaffected regulations.

Frequently Asked Questions (FAQ)

Q: Can I use a 400 V or 420 V rated substitute in place of the 385 V SLPX271M385C7P3? A: Yes. Aluminum electrolytic capacitors with higher voltage ratings are electrically compatible with applications designed for lower voltage ratings. The 400 V, 420 V, and 450 V substitutes provide additional voltage margin and do not degrade circuit performance.

Q: What is the difference between substitutes rated for 3000 hours and 5000 hours? A: The lifetime rating indicates the expected operational duration at the specified maximum temperature. Parts with 5000-hour ratings (420VXH270MEFCSN25X40 and ELHS451VSN271MQ40S) are suited for applications requiring extended service life or continuous operation at elevated temperatures.

Q: Are there dimensional differences between substitute parts? A: Most substitutes share the original 25.00 mm diameter and 42.00 mm height. The ELHS451VSN271MQ40S has slightly larger dimensions (25.40 mm diameter × 42.50 mm height). Verify PCB footprint clearance before selecting this part.

Q: What does ROHS3 compliance mean? A: ROHS3 compliance indicates conformance to European Union Restriction of Hazardous Substances Directive 3. All listed substitutes comply with ROHS3 or full RoHS standards, meeting environmental and safety requirements for electronics manufacturing.

Q: Can I substitute the Rubycon 450MXG270MEFCSN25X40 for the original CDE part? A: Yes. The 450MXG270MEFCSN25X40 maintains the same 270 µF capacitance, ±20% tolerance, and snap-in package configuration. The 450 V rating provides additional voltage headroom compared to the original 385 V specification.

Q: Which substitute offers the widest operating temperature range? A: The ELHS451VSN271MQ40S from Chemi-Con operates from -40°C to 105°C, extending the low-temperature specification by 15°C compared to the original -25°C to 85°C range.

Q: Are all substitute parts through-hole mounted? A: Yes. All substitutes use through-hole mounting with 10.00 mm lead spacing, maintaining compatibility with the original PCB layout.

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