ECA-1EM331BJ Equivalent & Substitute Parts

Part Overview

The ECA-1EM331BJ is a 330 µF, 25 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This through-hole component is rated for 2000 hours at 85°C and is designed for general-purpose applications. The part is currently active and ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and thermal performance characteristics to ensure direct functional replacement in circuit designs.

Substiute Parts

ECA-1EM331BJ

Panasonic Electronic ComponentsIn Stock: 1008ECA-1EM331BJ Datasheet

Current PartRFQ

ECA-1EM331

Panasonic Electronic ComponentsIn Stock: 2572ECA-1EM331 Datasheet

DirectRFQ

ECA-1EM331B

Panasonic Electronic ComponentsIn Stock: 7074ECA-1EM331B Datasheet

SimilarRFQ

UPA1E331MPD1TD

NichiconIn Stock: 6032UPA1E331MPD1TD Datasheet

DirectRFQ

UVK1E331MPD1TD

NichiconIn Stock: 4141UVK1E331MPD1TD Datasheet

DirectRFQ

UKA1E331MPD1TD

NichiconIn Stock: 4806UKA1E331MPD1TD Datasheet

UpgradeRFQ

UVK1E331MPD

NichiconIn Stock: 4149UVK1E331MPD Datasheet

SimilarRFQ

UVR1E331MPD

NichiconIn Stock: 10752UVR1E331MPD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Matching Parameters:

• Capacitance: 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)

Secondary Compatibility Parameters:

• Lead Spacing: 0.138" (4.60mm) or 0.197" (5.00mm) acceptable with PCB layout verification
• Case Diameter: 0.315" (8.00mm) or 0.394" (10.00mm) acceptable with mechanical clearance verification
• Height: Variations acceptable within assembly envelope constraints
• Lifetime @ Temperature: Equal or superior thermal performance acceptable
• Operating Temperature Range: Equal or superior range acceptable

Parts are grouped into three categories: Direct equivalents (identical packaging and specifications), similar parts (matching electrical specifications with minor dimensional variations), and upgrade parts (enhanced thermal performance).

Parameter Comparison

Engineering Selection Recommendations

For Active Product Status (Recommended for New Designs):

ECA-1EM331 and ECA-1EM331B are direct Panasonic equivalents with identical electrical specifications to the ECA-1EM331BJ. Both are ROHS3 compliant and active products. Selection between these depends on packaging requirements (Bulk vs. Tape & Box) and PCB lead spacing accommodation (4.60mm vs. 5.00mm).

UPA1E331MPD1TD is a Nichicon alternative with superior thermal performance (3000 Hrs @ 105°C vs. 2000 Hrs @ 85°C) and extended operating temperature range (-55°C ~ 105°C). This part is ROHS3 compliant and active. Height is 0.512" (13.00mm) versus 0.492" (12.50mm) for the main part; mechanical clearance verification is required.

For Existing Designs (Legacy Support):

UVK1E331MPD1TD, UKA1E331MPD1TD, UVK1E331MPD, and UVR1E331MPD are marked "Not For New Designs" and should be used only for replacement in existing applications where the original part is no longer available. These parts maintain electrical compatibility but are subject to product lifecycle discontinuation.

All substitute parts are ROHS3 compliant and suitable for through-hole PCB assembly.

Frequently Asked Questions (FAQ)

Q: Can ECA-1EM331 replace ECA-1EM331BJ directly?

A: Yes. ECA-1EM331 is a direct electrical and mechanical equivalent with identical capacitance (330 µF), voltage rating (25 V), tolerance (±20%), thermal performance (2000 Hrs @ 85°C), and lead spacing (0.138" / 4.60mm). The only difference is packaging format (Bulk vs. Tape & Box).

Q: What is the difference between ECA-1EM331B and ECA-1EM331BJ?

A: Both parts are electrically identical (330 µF, 25 V, ±20%, 2000 Hrs @ 85°C). The primary difference is lead spacing: ECA-1EM331B has 0.197" (5.00mm) spacing versus 0.138" (4.60mm) for ECA-1EM331BJ. PCB layout must accommodate the wider lead spacing.

Q: Is UPA1E331MPD1TD a suitable replacement?

A: UPA1E331MPD1TD meets all electrical requirements (330 µF, 25 V, ±20%) and offers enhanced thermal performance (3000 Hrs @ 105°C vs. 2000 Hrs @ 85°C). Height is 0.512" (13.00mm) versus 0.492" (12.50mm); mechanical clearance must be verified. Lead spacing matches at 0.138" (4.60mm).

Q: Why are some parts marked "Not For New Designs"?

A: Parts designated "Not For New Designs" (UVK1E331MPD1TD, UKA1E331MPD1TD, UVK1E331MPD, UVR1E331MPD) are in product lifecycle discontinuation. They remain electrically compatible for replacement in existing applications but should not be specified for new circuit designs.

Q: Can UVR1E331MPD replace ECA-1EM331BJ?

A: UVR1E331MPD is electrically compatible (330 µF, 25 V, ±20%, 2000 Hrs @ 85°C) but has larger physical dimensions: case diameter 0.394" (10.00mm) versus 0.315" (8.00mm), height 0.551" (14.00mm) versus 0.492" (12.50mm), and lead spacing 0.197" (5.00mm) versus 0.138" (4.60mm). PCB layout and mechanical envelope must accommodate these differences. This part is marked "Not For New Designs."

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and suitable for applications requiring RoHS certification.