EEU-HD1E331B Equivalent & Substitute Parts

Part Overview

The EEU-HD1E331B is a 330 µF, 25 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the HD series. This radial, through-hole component is rated for 1000 hours at 105°C and is designed for general-purpose applications requiring reliable energy storage and filtering. The part is currently active in production with full RoHS3 compliance and REACH unaffected status. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this capacitor category.

Substiute Parts

EEU-HD1E331B

Panasonic Electronic ComponentsIn Stock: 1942EEU-HD1E331B Datasheet

Current PartRFQ

EKY-250ELL331MJC5S

Chemi-ConIn Stock: 12807EKY-250ELL331MJC5S Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the EEU-HD1E331B is determined by strict equivalence in the following parameters:

• Capacitance value: 330 µF (exact match required)
• Voltage rating: 25 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Mounting type: Through Hole (exact match required)
• Package type: Radial, Can (exact match required)
• Lead spacing: 0.197" (5.00 mm) (exact match required)

The substitute part EKY-250ELL331MJC5S meets all these criteria. Variations in lifetime rating, ripple current specifications, physical dimensions (diameter and height), and operating temperature range do not disqualify substitution when the core electrical and mechanical parameters remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the EEU-HD1E331B and EKY-250ELL331MJC5S are active production parts with full RoHS3 compliance and REACH unaffected status, making either suitable for new designs and existing applications. The EKY-250ELL331MJC5S offers extended lifetime (7000 hours at 105°C versus 1000 hours) and higher ripple current ratings, providing enhanced performance margins in applications subject to thermal stress or high-frequency ripple conditions. The EEU-HD1E331B supports a lower minimum operating temperature (-55°C versus -40°C), which may be required for specific environmental applications. Selection between these parts should be based on application-specific thermal and ripple current requirements within the stated operating temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can the EKY-250ELL331MJC5S replace the EEU-HD1E331B in existing designs?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (25 V), tolerance (±20%), polarization (polar), mounting type (through hole), package type (radial can), and lead spacing (5.00 mm). These parameters determine mechanical and electrical compatibility in the circuit.

Q: What is the difference in physical size between these parts?

A: The EEU-HD1E331B has a diameter of 0.315" (8.00 mm) and height of 0.512" (13.00 mm). The EKY-250ELL331MJC5S has a diameter of 0.394" (10.00 mm) and height of 0.551" (14.00 mm). Both fit standard 5.00 mm lead spacing on PCBs, but the larger diameter and height of the Chemi-Con part must be verified against available board space.

Q: Why does the EKY-250ELL331MJC5S have a higher ripple current rating?

A: Ripple current capability is determined by internal construction and thermal design. The EKY-250ELL331MJC5S is rated for 432.5 mA at 120 Hz and 865 mA at 100 kHz, compared to 310 mA and 465 mA respectively for the EEU-HD1E331B. This difference reflects the Chemi-Con part's enhanced internal design for higher current applications.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both the EEU-HD1E331B and EKY-250ELL331MJC5S are ROHS3 compliant and REACH unaffected, meeting current environmental standards for electronic components.

Q: What is the minimum operating temperature difference between these parts?

A: The EEU-HD1E331B operates from -55°C to 105°C, while the EKY-250ELL331MJC5S operates from -40°C to 105°C. Applications requiring operation below -40°C must use the Panasonic part.