Equivalent & Substitute Parts for 227LMB350M2EC

Part Overview

The Cornell Dubilier 227LMB350M2EC is a 220 µF, 350 V aluminum electrolytic capacitor in radial, can snap-in package configuration. This component is classified as Active product status and is designed for general-purpose applications requiring through-hole mounting. The part operates across a temperature range of -25°C to 105°C with a rated lifetime of 3000 hours at 105°C.

Substitute parts become necessary when addressing application requirements for higher voltage ratings, extended operational lifetime, improved thermal performance, or enhanced ripple current handling. All substitute candidates maintain identical capacitance, tolerance, physical dimensions, lead spacing, and mounting configuration as the original specification.

Substiute Parts

227LMB350M2EC

Cornell Dubilier / Illinois CapacitorIn Stock: 1106227LMB350M2EC Datasheet

Current PartRFQ

450MXG220MEFCSN35X25

RubyconIn Stock: 1136450MXG220MEFCSN35X25 Datasheet

UpgradeRFQ

450VXH220MEFCSN35X25

RubyconIn Stock: 1216450VXH220MEFCSN35X25 Datasheet

UpgradeRFQ

B43642D5227M000

EPCOS - TDK ElectronicsIn Stock: 1354B43642D5227M000 Datasheet

UpgradeRFQ

LGN2W221MELC25

NichiconIn Stock: 274059LGN2W221MELC25 Datasheet

UpgradeRFQ

LGX2W221MELC25

NichiconIn Stock: 1000287LGX2W221MELC25 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 227LMB350M2EC is determined by strict adherence to the following parameters:

Mandatory Matching Parameters:

• Capacitance: 220 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Package / Case: Radial, Can - Snap-In (exact match required)
• Size / Dimension: 1.378" Dia (35.00mm) (exact match required)
• Height - Seated (Max): 1.063" (27.00mm) (exact match required)
• Lead Spacing: 0.394" (10.00mm) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Polarization: Polar (exact match required)

Allowable Variation Parameters:

• Voltage - Rated: May be equal to or greater than 350 V
• Lifetime @ Temp.: May be equal to or greater than 3000 Hrs @ 105°C
• Operating Temperature: May extend the lower limit below -25°C or maintain -25°C minimum
• ESR (Equivalent Series Resistance): May be lower than 2.30259 Ohm @ 120Hz
• Ripple Current: May be equal to or greater than specified values

All five substitute parts meet these criteria and are therefore electrically and mechanically compatible with the original 227LMB350M2EC specification.

Parameter Comparison

Engineering Selection Recommendations

All five substitute parts are Active status components with ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original 227LMB350M2EC.

Voltage Rating Consideration: All substitute parts operate at 450 V rated voltage, providing 100 V margin above the original 350 V specification. This elevated voltage rating does not degrade performance in 350 V applications and provides additional design margin.

Lifetime Selection: Two substitute options provide extended lifetime specifications:

• 450VXH220MEFCSN35X25 (Rubycon VXH series): 5000 Hrs @ 105°C
• LGX2W221MELC25 (Nichicon LGX series): 5000 Hrs @ 105°C

These extended-life options are suitable for applications requiring enhanced reliability over the standard 3000-hour specification.

Temperature Range: The B43642D5227M000 (EPCOS - TDK Electronics) extends the lower operating temperature limit to -40°C, compared to -25°C for all other options. This specification is applicable only when low-temperature operation is required.

Ripple Current Performance: All substitute parts maintain ripple current ratings equal to or exceeding the original specification across both low-frequency (120 Hz) and high-frequency (10 kHz) operating conditions.

ESR Characteristics: The B43642D5227M000 provides specified ESR of 380 mOhm @ 100Hz, representing a significant reduction from the original 2.30259 Ohm @ 120Hz. Lower ESR improves thermal performance and reduces voltage ripple in high-current applications.

Frequently Asked Questions (FAQ)

Q: Can the 450VXH220MEFCSN35X25 directly replace the 227LMB350M2EC in a 350 V circuit?

A: Yes. The 450VXH220MEFCSN35X25 operates at 450 V rated voltage, which exceeds the 350 V requirement. Higher voltage-rated capacitors function correctly in lower-voltage applications. Physical dimensions, lead spacing, and mounting configuration are identical.

Q: What is the primary advantage of selecting LGX2W221MELC25 over other substitutes?

A: The LGX2W221MELC25 provides 5000 hours lifetime at 105°C, compared to 3000 hours for most alternatives. This extended operational life is beneficial for applications requiring long-term reliability without component replacement.

Q: Does the B43642D5227M000 offer any performance advantage due to its lower ESR specification?

A: The B43642D5227M000 specifies 380 mOhm ESR @ 100Hz, substantially lower than the original 2.30259 Ohm @ 120Hz. Lower ESR reduces internal heat generation and voltage ripple, improving performance in high-ripple-current applications. This part also extends the lower operating temperature to -40°C.

Q: Are all substitute parts mechanically compatible with the original PCB layout?

A: Yes. All substitute parts maintain identical physical dimensions (1.378" diameter), height (1.063" maximum seated height), and lead spacing (0.394" / 10.00mm). Direct board-level substitution is possible without layout modification.

Q: Which substitute part offers the highest ripple current capacity?

A: The 450VXH220MEFCSN35X25 (Rubycon VXH series) provides 1.778 A @ 10 kHz ripple current rating, the highest among all options. The 450MXG220MEFCSN35X25 provides 1.764 A @ 10 kHz as a close alternative.

Q: Is there a substitute part with the lowest ESR specification?

A: The B43642D5227M000 (EPCOS - TDK Electronics B43642 series) specifies 380 mOhm ESR @ 100Hz. Other substitute parts do not provide ESR specifications in the supplied data.

Q: Can I use a 450 V rated capacitor in place of a 350 V rated capacitor without circuit modification?

A: Yes. Capacitors rated for higher voltages are electrically compatible with lower-voltage applications. The 450 V rating provides additional safety margin and does not affect circuit operation at 350 V or below.

Q: What is the difference between the two Nichicon options (LGN2W221MELC25 and LGX2W221MELC25)?

A: Both Nichicon parts are 220 µF, 450 V aluminum electrolytic capacitors with identical physical specifications. The primary difference is lifetime: LGN2W221MELC25 provides 3000 hours @ 105°C, while LGX2W221MELC25 provides 5000 hours @ 105°C. The LGX series is the extended-life variant.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All five substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements equivalent to the original 227LMB350M2EC.