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LAR2E331MELZ30 Equivalent & Substitute Parts
Part Overview
The LAR2E331MELZ30 is a 330 µF, 250 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is classified as Active product status and is designed for general-purpose applications requiring stable capacitance and reliable performance across industrial temperature ranges. Equivalent and substitute parts are identified when design requirements permit tolerance in physical dimensions, lifetime ratings, or ripple current specifications while maintaining core electrical parameters: 330 µF capacitance, ±20% tolerance, and 250 V rated voltage.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Capacitance | 330 | µF |
| Tolerance | ±20% | — |
| Voltage - Rated | 250 | V |
| Operating Temperature | -40 to 105 | °C |
| Polarization | Polar | — |
| Mounting Type | Through Hole | — |
| Package / Case | Radial, Can - Snap-In | — |
| Lead Spacing | 10.00 | mm |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the LAR2E331MELZ30 is permissible when the following core electrical parameters remain constant:
- Capacitance: 330 µF (fixed requirement)
- Tolerance: ±20% (fixed requirement)
- Voltage Rating: 250 V (fixed requirement)
- Polarization: Polar (fixed requirement)
- Lead Spacing: 10.00 mm (fixed requirement)
- Mounting Type: Through Hole (fixed requirement)
- Package Type: Radial, Can - Snap-In (fixed requirement)
Variations permitted in substitute parts include:
- Physical dimensions (diameter and height)
- Lifetime rating at 105°C (original: 2000 Hrs; substitutes: 3000 Hrs)
- Ripple current specifications at different frequencies
- Manufacturer (Nichicon series variants or alternative manufacturers)
All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence.
Parameter Comparison
| Part Number | Manufacturer | Series | Capacitance (µF) | Tolerance | Voltage (V) | Lifetime @ 105°C | Diameter (mm) | Height (mm) | Ripple Current @ 120 Hz (A) | Ripple Current @ 50 kHz (A) |
|---|---|---|---|---|---|---|---|---|---|---|
| LAR2E331MELZ30 | Nichicon | LAR | 330 | ±20% | 250 | 2000 Hrs | 22.00 | 30.00 | 1.2 | 1.8 |
| LGW2E331MELZ30 | Nichicon | LGW | 330 | ±20% | 250 | 3000 Hrs | 22.00 | 30.00 | 1.8 | 2.7 |
| LGN2E331MELA25 | Nichicon | LGN | 330 | ±20% | 250 | 3000 Hrs | 25.00 | 27.00 | 1.2 | 1.8 |
| LGN2E331MELY35 | Nichicon | LGN | 330 | ±20% | 250 | 3000 Hrs | 20.00 | 37.00 | 1.2 | 1.8 |
| LGN2E331MELZ30 | Nichicon | LGN | 330 | ±20% | 250 | 3000 Hrs | 22.00 | 32.00 | 1.2 | 1.8 |
| LGU2E331MELA | Nichicon | LGU | 330 | ±20% | 250 | 3000 Hrs | 25.00 | 30.00 | 1.3 | 1.95 |
| LGU2E331MELB | Nichicon | LGU | 330 | ±20% | 250 | 3000 Hrs | 30.00 | 25.00 | 1.3 | 1.95 |
| LGU2E331MELY | Nichicon | LGU | 330 | ±20% | 250 | 3000 Hrs | 20.00 | 40.00 | 1.2 | 1.8 |
| LGU2E331MELZ | Nichicon | LGU | 330 | ±20% | 250 | 3000 Hrs | 22.00 | 40.00 | 1.3 | 1.95 |
| LGW2E331MELA25 | Nichicon | LGW | 330 | ±20% | 250 | 3000 Hrs | 25.00 | 25.00 | 1.8 | 2.7 |
| 381LQ331M250H022 | Cornell Dubilier Electronics (CDE) | 381LQ | 330 | ±20% | 250 | 2000 Hrs | 22.00 | 32.00 | 1.2 | 1.68 |
Engineering Selection Recommendations
Selection of substitute parts for LAR2E331MELZ30 must be based on the following criteria:
Electrical Equivalence: All listed substitutes maintain identical capacitance (330 µF), tolerance (±20%), and voltage rating (250 V). These parameters are non-negotiable for functional compatibility.
Compliance Status: All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component.
Lifetime Considerations: The original LAR2E331MELZ30 specifies 2000 Hrs @ 105°C. Nichicon LGW, LGN, and LGU series substitutes offer extended lifetime of 3000 Hrs @ 105°C, providing improved reliability margins. The Cornell Dubilier 381LQ331M250H022 maintains the original 2000 Hrs @ 105°C rating.
Physical Dimensions: Substitutes vary in diameter (20.00 mm to 30.00 mm) and height (25.00 mm to 40.00 mm). PCB layout constraints and available mounting space determine which dimensional variant is acceptable. The original LAR2E331MELZ30 measures 22.00 mm diameter × 30.00 mm height. Direct dimensional match is available with LGW2E331MELZ30 and LGN2E331MELZ30.
Ripple Current Performance: Ripple current specifications vary across substitutes. LGW series parts (LGW2E331MELZ30, LGW2E331MELA25) deliver higher ripple current capacity (1.8 A @ 120 Hz, 2.7 A @ 50 kHz) compared to the original (1.2 A @ 120 Hz, 1.8 A @ 50 kHz). Selection depends on circuit ripple current requirements.
Manufacturer Availability: Nichicon series variants (LGW, LGN, LGU) are preferred for direct manufacturer continuity. Cornell Dubilier 381LQ331M250H022 provides cross-manufacturer equivalence with comparable electrical and dimensional specifications.
Frequently Asked Questions (FAQ)
Q: Can I substitute LAR2E331MELZ30 with any of the listed parts?
A: Substitution is permissible only when the receiving circuit accommodates the physical dimensions and ripple current specifications of the substitute part. All listed parts maintain the core electrical parameters (330 µF, ±20%, 250 V) required for functional equivalence. Verify PCB layout clearance and ripple current requirements before selection.
Q: What is the difference between the LAR and LGW series?
A: Both are Nichicon aluminum electrolytic capacitors with identical electrical ratings. The primary difference is lifetime: LAR series specifies 2000 Hrs @ 105°C, while LGW series specifies 3000 Hrs @ 105°C. LGW series also provides higher ripple current capacity (1.8 A @ 120 Hz vs. 1.2 A @ 120 Hz).
Q: Are the LGN and LGU series interchangeable with LAR2E331MELZ30?
A: LGN and LGU series maintain electrical equivalence but differ in physical dimensions and ripple current ratings. LGN2E331MELZ30 and LGU2E331MELY offer comparable dimensional profiles to the original. Verify that your PCB layout accommodates the specific diameter and height of the selected substitute.
Q: Why does the Cornell Dubilier 381LQ331M250H022 have different ripple current specifications?
A: The 381LQ series is manufactured by a different supplier (Cornell Dubilier Electronics) and may employ different internal construction. While electrical ratings remain equivalent, ripple current performance at high frequency (1.68 A @ 20 kHz vs. 1.8 A @ 50 kHz) reflects manufacturer-specific design. Verify compatibility with your circuit's ripple current profile.
Q: Can I use a substitute with higher ripple current capacity?
A: Yes. Higher ripple current capacity provides additional performance margin and is generally acceptable. LGW series substitutes (1.8 A @ 120 Hz, 2.7 A @ 50 kHz) exceed the original specification and are suitable for applications requiring enhanced ripple current handling.
Q: What does the ±20% tolerance mean for substitution?
A: The ±20% tolerance indicates that actual capacitance may range from 264 µF to 396 µF. All listed substitutes maintain this tolerance specification, ensuring equivalent performance variation across the component population.
Q: Are all substitutes RoHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence with the original LAR2E331MELZ30.
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