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LGU1E682MELZ Equivalent & Substitute Parts
Part Overview
The LGU1E682MELZ is a 6800 µF, 25 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 high capacitance in a compact through-hole form factor. The part is Active status and ROHS3 compliant.
Substitute parts are necessary when the original LGU1E682MELZ is unavailable, when extended operational lifetime is required, or when alternative manufacturers' components meet the same electrical and mechanical specifications for your application.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 6800 µF |
| Voltage Rating | 25 V |
| Tolerance | ±20% |
| Lifetime @ 105°C | 3000 Hrs |
| Operating Temperature Range | -40°C to 105°C |
| Package Type | Radial, Can - Snap-In |
| Mounting Type | Through Hole |
| Lead Spacing | 10.00 mm |
| Polarization | Polar |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the LGU1E682MELZ is determined by strict equivalence in the following parameters:
- Capacitance: 6800 µF (exact match required)
- Voltage Rating: 25 V (exact match required)
- Tolerance: ±20% (exact match required)
- Package Type: Radial, Can - Snap-In (exact match required)
- Mounting Type: Through Hole (exact match required)
- Lead Spacing: 10.00 mm (exact match required)
- Polarization: Polar (exact match required)
- Operating Temperature Range: -40°C to 105°C (exact match required)
- RoHS Compliance: ROHS3 Compliant (exact match required)
Substitute parts are grouped into two categories:
Upgrade Category: Parts with identical electrical and mechanical specifications but extended operational lifetime (5000 Hrs @ 105°C vs. 3000 Hrs @ 105°C).
Similar Category: Parts from alternative manufacturers meeting all core electrical and mechanical specifications, with variations in physical dimensions, ripple current ratings, or ESR characteristics that remain within acceptable substitution parameters.
Parameter Comparison
| Parameter | LGU1E682MELZ (Main) | LGY1E682MELZ30 (Upgrade) | LGY1E682MELA25 (Similar) | 381LX682M025J012 (Similar) | SLP682M025C1P3 (Similar) |
|---|---|---|---|---|---|
| Manufacturer | Nichicon | Nichicon | Nichicon | Cornell Dubilier Electronics | Cornell Dubilier Electronics |
| Capacitance | 6800 µF | 6800 µF | 6800 µF | 6800 µF | 6800 µF |
| Voltage Rating | 25 V | 25 V | 25 V | 25 V | 25 V |
| Tolerance | ±20% | ±20% | ±20% | ±20% | ±20% |
| Lifetime @ 105°C | 3000 Hrs | 5000 Hrs | 5000 Hrs | 3000 Hrs | 3000 Hrs |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C | -40°C ~ 105°C | -40°C ~ 105°C | -40°C ~ 105°C |
| 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 |
| Lead Spacing | 10.00 mm | 10.00 mm | 10.00 mm | 10.00 mm | 10.00 mm |
| Diameter | 22.00 mm | 22.00 mm | 25.00 mm | 25.00 mm | 25.00 mm |
| Height (Max) | 32.00 mm | 32.00 mm | 27.00 mm | 27.00 mm | 25.00 mm |
| Ripple Current @ 120 Hz | 1.91 A | 1.9 A | 1.9 A | 2.4 A | 2.4 A |
| Ripple Current @ High Frequency | 2.1965 A @ 50 kHz | 2.185 A @ 50 kHz | 2.185 A @ 50 kHz | 2.8 A @ 20 kHz | 3 A @ 20 kHz |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
All substitute parts listed maintain Active product status and ROHS3 compliance, ensuring continued availability and regulatory conformance.
LGY1E682MELZ30: Direct upgrade from LGU1E682MELZ within the Nichicon LGY series. Identical electrical and mechanical specifications with extended 5000-hour lifetime at 105°C. Maintains original 22.00 mm diameter and 32.00 mm height. Recommended for applications requiring extended operational life without PCB layout modifications.
LGY1E682MELA25: Nichicon LGY series alternative with 5000-hour lifetime. Physical dimensions differ: 25.00 mm diameter and 27.00 mm height. Suitable for applications where slightly larger diameter and reduced height are acceptable within PCB constraints.
381LX682M025J012: Cornell Dubilier Electronics 381LX series equivalent. Maintains 3000-hour lifetime matching the original part. Physical dimensions: 25.00 mm diameter and 27.00 mm height. Higher ripple current ratings (2.4 A @ 120 Hz, 2.8 A @ 20 kHz) support applications with elevated AC current demands.
SLP682M025C1P3: Cornell Dubilier Electronics SLP series with 3000-hour lifetime and specified ESR of 88 mOhm @ 120 Hz. Compact height of 25.00 mm with 25.00 mm diameter. Highest ripple current capability (2.4 A @ 120 Hz, 3 A @ 20 kHz). Suitable for space-constrained applications with high ripple current requirements.
Frequently Asked Questions (FAQ)
Q: Can LGY1E682MELZ30 be used as a direct replacement for LGU1E682MELZ without PCB modifications?
A: Yes. LGY1E682MELZ30 maintains identical lead spacing (10.00 mm), diameter (22.00 mm), and height (32.00 mm). No PCB layout changes are required.
Q: What is the difference between the Nichicon LGU and LGY series in this application?
A: Both series meet the 6800 µF, 25 V, ±20% tolerance specification. The primary difference is operational lifetime: LGU series is rated 3000 hours at 105°C, while LGY series is rated 5000 hours at 105°C.
Q: Can I use LGY1E682MELA25 if my PCB has limited vertical space?
A: Yes, if your application allows a 25.00 mm diameter footprint. LGY1E682MELA25 has a maximum height of 27.00 mm compared to 32.00 mm for the original part, providing 5 mm height reduction. Verify that the increased diameter does not conflict with adjacent components.
Q: Are Cornell Dubilier Electronics parts electrically equivalent to Nichicon parts?
A: Yes, for the specified parameters. 381LX682M025J012 and SLP682M025C1P3 meet all core electrical specifications: 6800 µF capacitance, 25 V rating, ±20% tolerance, and -40°C to 105°C operating range. Physical dimensions and ripple current characteristics differ as documented in the parameter comparison table.
Q: Which substitute part has the highest ripple current capability?
A: SLP682M025C1P3 provides the highest ripple current ratings: 2.4 A @ 120 Hz and 3 A @ 20 kHz. Select this part for applications with elevated AC current stress.
Q: Do all substitute parts have the same lead spacing as the original LGU1E682MELZ?
A: Yes. All substitute parts maintain 10.00 mm lead spacing, ensuring PCB hole compatibility across all options.
Q: What is the significance of the ESR specification in SLP682M025C1P3?
A: The 88 mOhm ESR @ 120 Hz specification indicates the equivalent series resistance at low frequency. This parameter is relevant for applications sensitive to impedance characteristics. Other parts do not specify ESR, indicating this parameter is not a primary selection criterion for this product category.
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