EEU-HD1E331 Equivalent & Substitute Parts

Part Overview

The EEU-HD1E331 is a 330 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Panasonic Electronic Components. This component is rated for 1000 hours at 105°C and is designed for general-purpose applications requiring polar capacitive energy storage. The part is currently active in production. Equivalent and substitute parts are necessary when the primary part is unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives from different manufacturers.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Lead Spacing	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the EEU-HD1E331 is determined by strict equivalence across the following parameters: capacitance (330 µF), voltage rating (25 V), tolerance (±20%), lead spacing (0.138" / 4.60 mm), case diameter (0.315" / 8.00 mm), mounting type (through hole), and package type (radial, can). All substitute parts listed maintain these core electrical and mechanical specifications. Variations in lifetime rating, ripple current specifications, and product status are noted but do not disqualify substitution when the primary parameters match. Packaging format differences (bulk versus cut tape) affect procurement and handling but not electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Lead Spacing	Case Diameter	Height (Max)	Packaging	Product Status
EEU-HD1E331	Panasonic	330 µF	25 V	±20%	1000 Hrs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Bulk	Active
ECA-1EHG331	Panasonic	330 µF	25 V	±20%	1000 Hrs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.492" (12.50 mm)	Bulk	Active
ECA-1EHG331BJ	Panasonic	330 µF	25 V	±20%	1000 Hrs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.492" (12.50 mm)	Cut Tape	Active
UKA1E331MPD	Nichicon	330 µF	25 V	±20%	2000 Hrs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Bulk	Not For New Designs
25PX330MEFC8X11.5	Rubycon	330 µF	25 V	±20%	1000 Hrs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Bulk	Active
UVY1E331MPD	Nichicon	330 µF	25 V	±20%	1000 Hrs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.512" (13.00 mm)	Bulk	Not For New Designs

Engineering Selection Recommendations

ECA-1EHG331 and ECA-1EHG331BJ are direct Panasonic alternatives with identical electrical specifications and active product status. ECA-1EHG331BJ carries AEC-Q200 automotive qualification and is available in cut tape packaging. The height difference (0.492" versus 0.512") must be verified against PCB layout constraints.

25PX330MEFC8X11.5 from Rubycon is a parametric equivalent with active product status and identical lifetime rating. This part is suitable for applications where manufacturer diversity is acceptable.

UKA1E331MPD and UVY1E331MPD from Nichicon are parametric equivalents but carry "Not For New Designs" status. UKA1E331MPD offers extended lifetime (2000 hours at 105°C) and is designated for audio applications. These parts are available but should not be selected for new product designs.

Frequently Asked Questions (FAQ)

Q: Can ECA-1EHG331BJ replace EEU-HD1E331 in existing designs? A: Yes. Both parts share identical electrical specifications (330 µF, 25 V, ±20%, 1000 Hrs @ 105°C) and mechanical compatibility (lead spacing, case diameter). The height difference (0.492" versus 0.512") requires verification against PCB clearance. Packaging format (cut tape versus bulk) affects procurement only.

Q: What is the difference between direct and parametric equivalents? A: Direct equivalents are from the same manufacturer (Panasonic) with identical series designation. Parametric equivalents meet the same electrical and mechanical specifications but are from different manufacturers (Nichicon, Rubycon). All listed parts are functionally interchangeable based on core parameters.

Q: Why are UKA1E331MPD and UVY1E331MPD marked "Not For New Designs"? A: These Nichicon parts are legacy products no longer recommended for new product development. They remain available for replacement and repair applications but should not be selected for new designs. Active alternatives (ECA-1EHG331, 25PX330MEFC8X11.5) are preferred.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 Compliant status and are REACH Unaffected, matching the compliance profile of the EEU-HD1E331.

Q: Does the ripple current specification affect substitution? A: Ripple current values vary slightly among substitutes but remain within acceptable ranges for the 330 µF, 25 V category. Verify ripple current against circuit requirements if the application involves high-frequency switching or significant AC ripple conditions.

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