LQSW6151MELZ35 Equivalent & Substitute Parts

Part Overview

The LQSW6151MELZ35 is a 150 µF, 420 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is rated for 3000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part is Active status and ROHS3 compliant.

Substitute parts are necessary when the original manufacturer's stock is unavailable, when design requirements call for extended operational lifetime, or when higher voltage ratings are required for circuit margin improvement while maintaining identical mechanical and electrical core specifications.

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage Rating	420 V
Tolerance	±20%
Lifetime @ 105°C	3000 Hrs
Operating Temperature Range	-25°C ~ 105°C
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Diameter	0.866" (22.00 mm)
Height	1.457" (37.00 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the LQSW6151MELZ35 is determined by the following criteria:

Direct Equivalents (Same Voltage Rating - 420 V):

420VXH150MEFCSN22X35 (Rubycon VXH series)
ELXS421VSN151MP35S (Chemi-Con LXS series)

These parts maintain identical capacitance (150 µF), voltage rating (420 V), tolerance (±20%), mechanical dimensions (22.00 mm diameter, 10.00 mm lead spacing), and mounting configuration (radial snap-in through-hole). Direct equivalents differ only in manufacturer, series designation, and operational lifetime (5000 Hrs @ 105°C versus 3000 Hrs).

Upgrade Equivalents (Higher Voltage Rating - 450 V):

450MXG150MEFCSN22X35 (Rubycon MXG series)
450VXH150MEFCSN22X35 (Rubycon VXH series)

These parts provide identical capacitance (150 µF), tolerance (±20%), mechanical dimensions, and mounting type, but with elevated voltage rating (450 V). Upgrade equivalents are electrically compatible in circuits designed for 420 V operation and provide additional voltage margin.

Parameter Comparison

Parameter	LQSW6151MELZ35 (Nichicon)	420VXH150MEFCSN22X35 (Rubycon)	ELXS421VSN151MP35S (Chemi-Con)	450MXG150MEFCSN22X35 (Rubycon)	450VXH150MEFCSN22X35 (Rubycon)
Capacitance	150 µF	150 µF	150 µF	150 µF	150 µF
Voltage Rating	420 V	420 V	420 V	450 V	450 V
Tolerance	±20%	±20%	±20%	±20%	±20%
Lifetime @ 105°C	3000 Hrs	5000 Hrs	5000 Hrs	3000 Hrs	5000 Hrs
Operating Temperature	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C
Lead Spacing	10.00 mm	10.00 mm	10.00 mm	10.00 mm	10.00 mm
Diameter	22.00 mm	22.00 mm	22.00 mm	22.00 mm	22.00 mm
Height (Max)	37.00 mm	37.00 mm	37.50 mm	37.00 mm	37.00 mm
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Equivalent Selection (420 V Rating):

420VXH150MEFCSN22X35 and ELXS421VSN151MP35S are electrically and mechanically equivalent to LQSW6151MELZ35. Both substitute parts are Active status and ROHS3 compliant. The 420VXH150MEFCSN22X35 offers extended operational lifetime (5000 Hrs @ 105°C) compared to the original 3000 Hrs specification. The ELXS421VSN151MP35S also provides 5000 Hrs lifetime with maximum height of 37.50 mm, which remains compatible with standard PCB layouts designed for 37.00 mm clearance.

Upgrade Equivalent Selection (450 V Rating):

450MXG150MEFCSN22X35 and 450VXH150MEFCSN22X35 provide identical capacitance and mechanical compatibility while offering higher voltage rating (450 V). Both are Active status and ROHS3 compliant. The 450VXH150MEFCSN22X35 provides extended lifetime (5000 Hrs @ 105°C) and is suitable for applications requiring voltage margin improvement. The 450MXG150MEFCSN22X35 maintains the original 3000 Hrs lifetime specification.

All substitute parts maintain identical lead spacing (10.00 mm), diameter (22.00 mm), and through-hole snap-in mounting configuration, ensuring direct PCB compatibility without layout modification.

Frequently Asked Questions (FAQ)

Q: Can 420VXH150MEFCSN22X35 be used as a direct replacement for LQSW6151MELZ35?

A: Yes. Both parts share identical capacitance (150 µF), voltage rating (420 V), tolerance (±20%), lead spacing (10.00 mm), diameter (22.00 mm), and snap-in through-hole mounting type. The Rubycon part offers extended lifetime (5000 Hrs @ 105°C versus 3000 Hrs) and is ROHS3 compliant.

Q: What is the difference between direct equivalents and upgrade equivalents?

A: Direct equivalents (420VXH150MEFCSN22X35, ELXS421VSN151MP35S) maintain the 420 V voltage rating. Upgrade equivalents (450MXG150MEFCSN22X35, 450VXH150MEFCSN22X35) provide 450 V rating, offering additional voltage margin while maintaining identical capacitance and mechanical dimensions.

Q: Can upgrade parts with 450 V rating be used in circuits designed for 420 V?

A: Yes. A capacitor rated for 450 V is electrically compatible in circuits specified for 420 V operation. The higher voltage rating provides additional safety margin without affecting circuit performance.

Q: Does the height difference of ELXS421VSN151MP35S (37.50 mm vs. 37.00 mm) affect PCB compatibility?

A: The 0.50 mm height difference is within typical PCB design tolerances for snap-in capacitor mounting. Verify clearance in your specific PCB layout before selection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (420VXH150MEFCSN22X35, ELXS421VSN151MP35S, 450MXG150MEFCSN22X35, 450VXH150MEFCSN22X35) are ROHS3 compliant and maintain compliance with REACH regulations.

Q: Which substitute part offers the longest operational lifetime?

A: Both 420VXH150MEFCSN22X35 and 450VXH150MEFCSN22X35 provide 5000 Hrs @ 105°C lifetime, compared to the original 3000 Hrs specification.

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