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UHC1A331MPD Equivalent & Substitute Parts
Part Overview
The UHC1A331MPD is a 330 µF, 10 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The UHC series is designed for high-temperature reflow applications with a rated lifetime of 2000 hours at 105°C. Identifying compatible alternatives ensures design continuity and supply chain reliability.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 330 µF |
| Voltage Rating | 10 V |
| Tolerance | ±20% |
| Package Type | Radial, Can |
| Mounting Type | Through Hole |
| Lead Spacing | 0.138" (4.60 mm) |
| Case Diameter | 0.315" (8.00 mm) |
| Height (Max) | 0.453" (11.50 mm) |
| Operating Temperature Range | -40°C to 105°C |
| Polarization | Polar |
Substitute Part Grouping Explanation
Substitution of the UHC1A331MPD is determined by strict equivalence in the following parameters: capacitance (330 µF), tolerance (±20%), voltage rating (10 V or higher), package type (radial, can), mounting type (through hole), and physical dimensions (lead spacing 0.138", case diameter 0.315", height 0.453"). Parts meeting these criteria are classified as direct substitutes. Parts with identical capacitance and tolerance but higher voltage ratings (16 V) are classified as upgrades, as they provide enhanced voltage margin while maintaining mechanical and electrical compatibility. Parts with identical capacitance, tolerance, and voltage rating but different manufacturers are classified as equivalent alternatives.
Parameter Comparison
| Part Number | Manufacturer | Capacitance | Voltage | Tolerance | Lifetime @ 105°C | Operating Temp Range | Lead Spacing | Case Diameter | Height (Max) | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|
| UHC1A331MPD | Nichicon | 330 µF | 10 V | ±20% | 2000 Hrs | -40°C to 105°C | 0.138" | 0.315" | 0.453" | Obsolete |
| UPW1A331MPD | Nichicon | 330 µF | 10 V | ±20% | 3000 Hrs | -55°C to 105°C | 0.138" | 0.315" | 0.453" | Not For New Designs |
| EEU-FC1A331 | Panasonic | 330 µF | 10 V | ±20% | 2000 Hrs | -55°C to 105°C | 0.138" | 0.315" | 0.453" | Active |
| SEK331M010ST | Cornell Dubilier Electronics | 330 µF | 10 V | ±20% | 2000 Hrs | -55°C to 105°C | 0.138" | 0.315" | 0.453" | Active |
| UHE1C331MPD | Nichicon | 330 µF | 16 V | ±20% | 7000 Hrs | -40°C to 105°C | 0.138" | 0.315" | 0.453" | Not For New Designs |
| UPW1C331MPD | Nichicon | 330 µF | 16 V | ±20% | 3000 Hrs | -55°C to 105°C | 0.138" | 0.315" | 0.453" | Not For New Designs |
| EEU-FC1C331 | Panasonic | 330 µF | 16 V | ±20% | 2000 Hrs | -55°C to 105°C | 0.138" | 0.315" | 0.453" | Active |
Engineering Selection Recommendations
For direct replacement of the UHC1A331MPD in existing designs, EEU-FC1A331 (Panasonic) is the preferred choice. This part maintains identical electrical specifications (330 µF, 10 V, ±20% tolerance) and physical dimensions while offering active product status and AEC-Q200 automotive qualification. SEK331M010ST (Cornell Dubilier Electronics) provides an alternative direct substitute with active status and extended operating temperature range (-55°C to 105°C).
For new designs or applications where voltage margin is beneficial, UPW1C331MPD or EEU-FC1C331 (both 330 µF, 16 V) are suitable upgrades. EEU-FC1C331 is recommended for automotive applications due to AEC-Q200 compliance and active product status. UPW1C331MPD offers extended operating temperature range (-55°C to 105°C) and higher lifetime rating (3000 hours at 105°C).
Parts classified as "Not For New Designs" (UHE1C331MPD, UPW1A331MPD, UPW1C331MPD) are suitable for legacy system maintenance and repair but should not be selected for new product development.
Frequently Asked Questions (FAQ)
Q: Can I use a 16 V rated capacitor in place of the 10 V UHC1A331MPD?
A: Yes. A 16 V rated capacitor with identical capacitance (330 µF) and tolerance (±20%) is mechanically and electrically compatible. The higher voltage rating provides additional safety margin and does not negatively impact circuit performance in 10 V applications.
Q: Are all substitute parts physically identical to the UHC1A331MPD?
A: Yes. All listed substitutes share identical physical dimensions: 0.138" lead spacing, 0.315" case diameter, and 0.453" maximum height. They are all radial, can-type, through-hole components suitable for PCB mounting in the same footprint.
Q: What is the difference between "Obsolete" and "Not For New Designs" product status?
A: Obsolete parts are no longer manufactured and have limited availability. "Not For New Designs" parts are still manufactured but are being phased out; they are suitable for maintenance and repair of existing products but should not be used in new product development.
Q: Which substitute offers the best long-term reliability?
A: UHE1C331MPD offers the highest lifetime rating at 7000 hours at 105°C. However, it carries "Not For New Designs" status. For active products, EEU-FC1C331 (Panasonic, 16 V) provides 2000 hours at 105°C with AEC-Q200 compliance, suitable for automotive and industrial applications.
Q: Are there RoHS compliance differences between substitutes?
A: All listed substitutes are ROHS3 compliant. The original UHC1A331MPD does not specify RoHS status in the provided data.
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