ECA-2EM3R3B Equivalent & Substitute Parts

Part Overview

The ECA-2EM3R3B is a 3.3 µF, 250 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This component is rated for 2000 hours at 85°C and operates across a temperature range of -25°C to 85°C. The part is currently active in production with ROHS3 compliance and REACH unaffected status. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter set.

Substiute Parts

ECA-2EM3R3B

Panasonic Electronic ComponentsIn Stock: 763ECA-2EM3R3B Datasheet

Current PartRFQ

ECA-2EM3R3

Panasonic Electronic ComponentsIn Stock: 1156ECA-2EM3R3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECA-2EM3R3B is determined by strict equivalence across the following critical parameters:

• Capacitance value: 3.3 µF (exact match required)
• Rated voltage: 250 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime rating: 2000 Hrs @ 85°C (exact match required)
• Operating temperature range: -25°C ~ 85°C (exact match required)
• Polarization: Polar (exact match required)
• Package type: Radial, Can (exact match required)
• Physical dimensions: 0.315" Dia (8.00mm) and 0.492" (12.50mm) height (exact match required)
• Mounting type: Through Hole (exact match required)
• Compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

The primary difference between the main part and identified substitutes is packaging format (Cut Tape versus Bulk) and lead spacing configuration, which do not affect electrical performance or core mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both ECA-2EM3R3B and ECA-2EM3R3 are active production parts from Panasonic Electronic Components with identical electrical specifications and core mechanical dimensions. Both parts maintain ROHS3 compliance and REACH unaffected status. Selection between these parts is determined by packaging requirements and lead spacing configuration. The ECA-2EM3R3B features 0.197" (5.00mm) lead spacing in Cut Tape packaging, while the ECA-2EM3R3 provides 0.138" (4.60mm) lead spacing in Bulk packaging. Lead spacing differences require PCB layout verification to ensure compatibility with existing through-hole pad configurations.

Frequently Asked Questions (FAQ)

Q: Can ECA-2EM3R3 replace ECA-2EM3R3B in existing designs?

A: Electrical substitution is valid when lead spacing accommodates the 0.138" (4.60mm) configuration of the ECA-2EM3R3. PCB layout must be evaluated to confirm pad spacing compatibility. Both parts deliver identical capacitance, voltage rating, tolerance, lifetime, and temperature performance.

Q: What is the difference between Cut Tape and Bulk packaging?

A: Cut Tape (CT) packaging provides individual component strips suitable for automated pick-and-place assembly. Bulk packaging supplies loose components for manual assembly or alternative handling methods. Electrical and mechanical performance remain identical.

Q: Are there lead spacing restrictions for substitution?

A: Yes. The ECA-2EM3R3B uses 0.197" (5.00mm) lead spacing, while ECA-2EM3R3 uses 0.138" (4.60mm) lead spacing. PCB through-hole pad spacing must accommodate the selected part's lead configuration. Mismatched lead spacing will prevent proper component insertion.

Q: Do both parts meet the same compliance standards?

A: Yes. Both ECA-2EM3R3B and ECA-2EM3R3 are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements.

Q: What determines if a part is a valid substitute?

A: Valid substitutes must match all critical electrical parameters (capacitance, voltage, tolerance, lifetime, temperature range, ripple current) and core mechanical specifications (package type, overall dimensions, mounting type, polarization). Packaging format and lead spacing are secondary considerations requiring PCB layout verification.