SLPX271M350E1P3 Equivalent & Substitute Parts

Part Overview

The SLPX271M350E1P3 is a 270 µF, 350 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package configuration. This component is rated for general-purpose applications with a nominal lifetime of 3000 hours at 85°C and an equivalent series resistance (ESR) of 737 mOhm @ 120 Hz. The part carries active product status with full RoHS3 compliance and REACH unaffected certification.

Alternative models become necessary when supply constraints occur, when operating temperature requirements exceed the original specification, or when ripple current performance at high frequencies must be optimized for specific circuit demands.

Substiute Parts

SLPX271M350E1P3

Cornell Dubilier Electronics (CDE)In Stock: 778SLPX271M350E1P3 Datasheet

Current PartRFQ

LGN2V271MELB25

NichiconIn Stock: 981LGN2V271MELB25 Datasheet

UpgradeRFQ

LLS2V271MELB

NichiconIn Stock: 1084LLS2V271MELB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for 270 µF, 350 V aluminum electrolytic capacitors is determined by the following critical parameters:

Mandatory Parameters for Substitution:

• Capacitance: 270 µF (exact match required)
• Voltage Rating: 350 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package Type: Radial, Can - Snap-In (exact match required)
• Lead Spacing: 10.00 mm (exact match required)
• Physical Dimensions: Diameter 30.00 mm, Height 27.00 mm (exact match required)
• Mounting Type: Through Hole (exact match required)
• Polarization: Polar (exact match required)

Performance Parameters Allowing Variation:

• Lifetime @ Temperature: May exceed 3000 hours at rated temperature
• Operating Temperature Range: May exceed -25°C to 85°C upper limit
• ESR and Ripple Current: Acceptable if equal to or lower than original specification
• Compliance Standards: RoHS3 and REACH status must be maintained

Two substitute parts are identified:

LGN2V271MELB25 (Nichicon) qualifies as an upgrade substitute, meeting all mandatory parameters while providing extended operating temperature to 105°C and equivalent 3000-hour lifetime rating at this elevated temperature.

LLS2V271MELB (Nichicon) qualifies as a parametric equivalent, matching all mandatory specifications including the identical operating temperature range (-25°C to 85°C) and providing equivalent performance metrics.

Parameter Comparison

Engineering Selection Recommendations

Both Nichicon alternatives meet the regulatory and compliance requirements established for the original CDE SLPX271M350E1P3 component. All three parts maintain RoHS3 compliance and REACH unaffected status, ensuring continued eligibility in restricted substance applications.

LGN2V271MELB25 Selection Criteria: This Nichicon upgrade substitute extends the operating temperature upper limit to 105°C while maintaining the 3000-hour lifetime rating at this elevated temperature. Selection of this part is appropriate when circuit designs operate in high-temperature environments or when thermal management becomes a limiting factor. The part remains pin-compatible and mechanically identical in all physical dimensions.

LLS2V271MELB Selection Criteria: This Nichicon parametric equivalent provides direct functional replacement with identical operating temperature specifications (-25°C to 85°C) and lifetime rating (3000 hours at 85°C). This part is appropriate for standard applications requiring exact thermal envelope matching to the original specification. Ripple current performance at 50 kHz (2.574 A) closely matches the original specification measured at 20 kHz (2.65 A).

Both alternatives are currently in active product status with confirmed inventory availability (920 and 1073 units respectively), ensuring reliable supply chain access.

Frequently Asked Questions (FAQ)

Q: Are the LGN2V271MELB25 and LLS2V271MELB parts electrically interchangeable with the SLPX271M350E1P3?

A: Yes. All three parts share identical capacitance (270 µF), voltage rating (350 V), tolerance (±20%), and physical dimensions (30 mm diameter, 27 mm height, 10 mm lead spacing). The mounting type (through-hole, snap-in) and package footprint are identical, permitting direct substitution without PCB redesign.

Q: What is the primary difference between the two Nichicon alternatives?

A: The LGN2V271MELB25 extends the maximum operating temperature to 105°C and is rated for 3000 hours at this elevated temperature, whereas the LLS2V271MELB maintains the original -25°C to 85°C operating range. Select LGN2V271MELB25 for applications requiring higher temperature operation; select LLS2V271MELB for standard thermal environments.

Q: How do ripple current specifications affect part selection?

A: Ripple current capacity must meet or exceed the circuit's actual ripple current demand at the operating frequency. The original SLPX271M350E1P3 specifies 2.65 A @ 20 kHz. The LLS2V271MELB provides 2.574 A @ 50 kHz, which is acceptable for most applications. The LGN2V271MELB25 specifies 1.573 A @ 50 kHz; this part is appropriate only when circuit ripple current remains below 1.1 A @ 120 Hz.

Q: Do all three parts maintain compliance with RoHS and REACH regulations?

A: Confirmed. All three components carry RoHS3 compliance and REACH unaffected status, meeting current environmental and hazardous substance restrictions.

Q: Are there any PCB layout or mechanical considerations when substituting these parts?

A: No. Lead spacing (10 mm), can diameter (30 mm), seated height (27 mm), and mounting type (through-hole snap-in) are identical across all three parts. Existing PCB layouts and mechanical assemblies require no modification for substitution.