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LQS2V331MELB30 Equivalent & Substitute Parts
Part Overview
The LQS2V331MELB30 is a 330 µF, 350 V aluminum electrolytic capacitor manufactured by Nichicon in the LQS series. This radial, snap-in can capacitor is designed for general-purpose applications with a rated lifetime of 3000 hours at 105°C and an operating temperature range of -25°C to 105°C. The part is currently active and in stock. Substitute parts are identified when equivalent capacitance and tolerance values are maintained while voltage ratings, physical dimensions, and mounting characteristics remain compatible with the original design specifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 330 µF |
| Tolerance | ±20% |
| Voltage - Rated | 350 V |
| Lifetime @ Temperature | 3000 Hrs @ 105°C |
| Operating Temperature Range | -25°C ~ 105°C |
| Lead Spacing | 0.394" (10.00mm) |
| Size / Dimension | 1.181" Dia (30.00mm) |
| Height - Seated (Max) | 1.260" (32.00mm) |
| Mounting Type | Through Hole |
| Package / Case | Radial, Can - Snap-In |
| Polarization | Polar |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the LQS2V331MELB30 are qualified based on the following criteria:
- Capacitance value: 330 µF (exact match required)
- Tolerance: ±20% (exact match required)
- Voltage rating: Equal to or greater than 350 V
- Physical dimensions: 1.181" diameter (30.00mm) and 1.260" maximum seated height (32.00mm)
- Lead spacing: 0.394" (10.00mm)
- Mounting type: Through Hole, Radial, Can - Snap-In
- Lifetime: 3000 Hrs @ 105°C (minimum)
- Operating temperature range: -25°C to 105°C (minimum)
- Polarization: Polar
- RoHS compliance: ROHS3 Compliant
Two substitute parts meet these criteria with voltage ratings higher than the original specification, providing enhanced voltage margin for the application.
Parameter Comparison
| Parameter | LQS2V331MELB30 (Nichicon) | 450MXK330MEFCFA30X30 (Rubycon) | B43642C9337M000 (EPCOS - TDK) |
|---|---|---|---|
| Capacitance | 330 µF | 330 µF | 330 µF |
| Tolerance | ±20% | ±20% | ±20% |
| Voltage - Rated | 350 V | 450 V | 400 V |
| Lifetime @ Temperature | 3000 Hrs @ 105°C | 3000 Hrs @ 105°C | 3000 Hrs @ 105°C |
| Operating Temperature Range | -25°C ~ 105°C | -25°C ~ 105°C | -40°C ~ 105°C |
| Lead Spacing | 0.394" (10.00mm) | 0.394" (10.00mm) | 0.394" (10.00mm) |
| Size / Dimension | 1.181" Dia (30.00mm) | 1.181" Dia (30.00mm) | 1.181" Dia (30.00mm) |
| Height - Seated (Max) | 1.260" (32.00mm) | 1.260" (32.00mm) | 1.260" (32.00mm) |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | Radial, Can - Snap-In | Radial, Can - Snap-In | Radial, Can - Snap-In |
| Polarization | Polar | Polar | Polar |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Both substitute parts maintain full compatibility with the LQS2V331MELB30 in terms of physical footprint, electrical capacitance, tolerance, and mounting configuration. All three parts are ROHS3 compliant and carry active product status.
The 450MXK330MEFCFA30X30 (Rubycon MXK series) provides a 450 V rated voltage, representing a 100 V increase over the original specification while maintaining identical physical dimensions and lead spacing.
The B43642C9337M000 (EPCOS - TDK B43642 series) provides a 400 V rated voltage, representing a 50 V increase over the original specification. This part extends the operating temperature range to -40°C, providing enhanced low-temperature performance compared to the original -25°C minimum.
Frequently Asked Questions (FAQ)
Q: Can the 450MXK330MEFCFA30X30 be used as a direct replacement for the LQS2V331MELB30?
A: Yes. The 450MXK330MEFCFA30X30 maintains the same 330 µF capacitance, ±20% tolerance, physical dimensions (1.181" diameter, 1.260" maximum height), lead spacing (0.394"), and snap-in mounting configuration. The higher 450 V rating is compatible with circuits designed for 350 V operation.
Q: Can the B43642C9337M000 be used as a direct replacement for the LQS2V331MELB30?
A: Yes. The B43642C9337M000 maintains the same 330 µF capacitance, ±20% tolerance, physical dimensions, lead spacing, and snap-in mounting configuration. The 400 V rating is compatible with circuits designed for 350 V operation. The extended operating temperature range (-40°C to 105°C) provides additional margin for low-temperature environments.
Q: Are there any differences in ripple current ratings between the main part and substitutes?
A: Ripple current specifications differ between manufacturers and series. The LQS2V331MELB30 is rated for 1.2 A @ 120 Hz and 1.716 A @ 50 kHz. The 450MXK330MEFCFA30X30 is rated for 1.58 A @ 120 Hz and 2.212 A @ 10 kHz. The B43642C9337M000 is rated for 1.51 A @ 100 Hz. Application-specific ripple current requirements must be evaluated against these specifications.
Q: Do all three parts have the same physical footprint?
A: Yes. All three parts share identical lead spacing (0.394" / 10.00mm), diameter (1.181" / 30.00mm), and maximum seated height (1.260" / 32.00mm), ensuring direct PCB compatibility.
Q: Are all parts RoHS compliant?
A: Yes. The LQS2V331MELB30, 450MXK330MEFCFA30X30, and B43642C9337M000 are all ROHS3 compliant.
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