LQSW6221MELA35 Equivalent & Substitute Parts

Part Overview

The LQSW6221MELA35 is a 220 µF, 420 V aluminum electrolytic capacitor manufactured by Nichicon in the LQS series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring through-hole mounting. The part is currently active in production with 273,782 units in stock.

Substitute parts become necessary when the original component reaches end-of-life status, when supply constraints occur, or when design requirements call for enhanced performance characteristics such as increased voltage rating or extended operational lifetime.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage Rating	420 V
Tolerance	±20%
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-25°C ~ 105°C
Lead Spacing	0.394" (10.00 mm)
Case Diameter	0.984" (25.00 mm)
Height (Seated Max)	1.457" (37.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Ripple Current @ 120 Hz	1.05 A

Substitute Part Grouping Explanation

Substitution eligibility for the LQSW6221MELA35 is determined by the following critical parameters:

Capacitance Value: Must be 220 µF (exact match required)
Voltage Rating: Minimum 420 V; higher ratings are acceptable as upgrades
Tolerance: ±20% (standard tolerance maintained across all candidates)
Package Configuration: Radial, can-style snap-in with through-hole mounting
Lead Spacing: 0.394" (10.00 mm) center-to-center
Polarization: Polar (electrolytic)

The two substitute parts listed—450VXH220MEFCSN25X35 (Rubycon) and ELHS451VSN221MQ35S (Chemi-Con)—meet all substitution criteria. Both feature identical capacitance and tolerance, maintain compatible physical dimensions and lead spacing, and provide upgraded voltage ratings (450 V) with extended operational lifetimes (5000 Hrs @ 105°C versus 3000 Hrs for the original).

Parameter Comparison

Parameter	LQSW6221MELA35 (Nichicon)	450VXH220MEFCSN25X35 (Rubycon)	ELHS451VSN221MQ35S (Chemi-Con)
Capacitance	220 µF	220 µF	220 µF
Voltage Rating	420 V	450 V	450 V
Tolerance	±20%	±20%	±20%
Lifetime @ 105°C	3000 Hrs	5000 Hrs	5000 Hrs
Operating Temperature	-25°C ~ 105°C	-25°C ~ 105°C	-40°C ~ 105°C
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Case Diameter	0.984" (25.00 mm)	0.984" (25.00 mm)	1.000" (25.40 mm)
Height (Seated Max)	1.457" (37.00 mm)	1.457" (37.00 mm)	1.476" (37.50 mm)
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole
Ripple Current @ 120 Hz	1.05 A	1.37 A	1.21 A
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both substitute parts are suitable replacements from a compliance and certification standpoint. All three components—the original LQSW6221MELA35 and both substitutes—maintain REACH compliance and RoHS certification status.

The 450VXH220MEFCSN25X35 (Rubycon) maintains identical physical dimensions to the original part, ensuring direct board-level compatibility without layout modifications. The ELHS451VSN221MQ35S (Chemi-Con) exhibits minor dimensional variations (case diameter 25.40 mm versus 25.00 mm, height 37.50 mm versus 37.00 mm) and extends the operating temperature range to -40°C, providing enhanced performance in cold-environment applications.

Both substitutes provide upgraded voltage ratings (450 V) and doubled operational lifetime (5000 Hrs @ 105°C), representing performance enhancements over the original specification.

Frequently Asked Questions (FAQ)

Q: Can the 450VXH220MEFCSN25X35 directly replace the LQSW6221MELA35 without PCB modifications?

A: Yes. The Rubycon part maintains identical lead spacing (10.00 mm), case diameter (25.00 mm), and seated height (37.00 mm), enabling direct substitution without board layout changes.

Q: Is the ELHS451VSN221MQ35S compatible with the original PCB footprint?

A: The Chemi-Con part has slightly larger dimensions (case diameter 25.40 mm, height 37.50 mm). Verify PCB clearances before substitution. Lead spacing remains compatible at 10.00 mm.

Q: What is the significance of the 450 V rating on substitute parts versus the original 420 V?

A: The higher voltage rating provides additional safety margin in the circuit. A 450 V capacitor operates safely at 420 V and below, making it a valid upgrade substitute.

Q: Do all three parts share the same snap-in mounting mechanism?

A: Yes. All three components use radial, can-style snap-in packaging with through-hole mounting, ensuring mechanical compatibility.

Q: Why do the substitute parts have extended lifetimes (5000 Hrs @ 105°C)?

A: The substitute parts represent newer formulations from their respective manufacturers, offering improved thermal stability and extended operational life at elevated temperatures compared to the original LQS series specification.

Q: Are there any temperature range differences to consider?

A: The original part operates from -25°C to 105°C. The Rubycon substitute maintains this range. The Chemi-Con substitute extends the lower limit to -40°C, suitable for applications requiring enhanced cold-temperature performance.

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