ELC11D820F Equivalent & Substitute Parts

Part Overview

The ELC11D820F is a 82 µH unshielded drum core wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.9 A with 90mOhm DC resistance. This through-hole component is designed for radial, vertical cylinder mounting applications. The product is currently obsolete, making equivalent substitutes necessary for ongoing design requirements and production continuity.

Substiute Parts

ELC11D820F

Panasonic Electronic ComponentsIn Stock: 825ELC11D820F Datasheet

Current PartRFQ

RCH8011NP-820L

Sumida America Components Inc.In Stock: 826RCH8011NP-820L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The RCH8011NP-820L from Sumida America Components Inc. qualifies as a functional substitute based on the following matching parameters:

• Inductance: 82 µH (identical)
• Core Material: Ferrite (identical)
• Shielding: Unshielded (identical)
• Mounting Type: Through Hole (identical)
• Package Type: Radial, Vertical Cylinder (identical)

Substitution is valid where the following parameter variations are acceptable for the application:

• Current Rating: 1.55 A (lower than 1.9 A main part)
• DC Resistance: 190mOhm Max (higher than 90mOhm main part)
• Tolerance: ±15% (wider than ±10% main part)
• Physical Dimensions: Smaller footprint (0.307" Dia vs 0.453" Dia)

Parameter Comparison

Engineering Selection Recommendations

The RCH8011NP-820L is an active product with ROHS3 compliance, providing supply continuity for the obsolete ELC11D820F. Selection of this substitute requires circuit-level validation of the following deviations:

• Current capacity is reduced from 1.9 A to 1.55 A; applications operating near the original current rating require thermal and saturation analysis
• DC resistance doubles from 90mOhm to 190mOhm, increasing power dissipation and affecting circuit Q factor
• Inductance tolerance widens from ±10% to ±15%, impacting frequency-dependent circuit performance
• Physical dimensions are smaller, which may affect PCB layout compatibility

The substitute maintains identical inductance value, core material, shielding configuration, and through-hole mounting interface, supporting direct functional replacement in applications where the parameter deviations are within design margins.

Frequently Asked Questions (FAQ)

Q: Can RCH8011NP-820L directly replace ELC11D820F in all applications?

A: Direct replacement is valid only when circuit design margins accommodate the reduced current rating (1.55 A vs 1.9 A), increased DC resistance (190mOhm vs 90mOhm), and wider inductance tolerance (±15% vs ±10%). Applications with tight current or resistance specifications require design review.

Q: What is the impact of the higher DC resistance in the substitute part?

A: The 190mOhm DC resistance in RCH8011NP-820L produces approximately 2.1 times greater power dissipation compared to the 90mOhm ELC11D820F at rated current. This affects thermal performance and circuit efficiency, particularly in high-current or continuous-duty applications.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: The RCH8011NP-820L has a smaller footprint (0.307" Dia, 0.425" Height) compared to the ELC11D820F (0.453" Dia, 0.547" Height). While the smaller size generally accommodates existing through-hole pads, verification of lead spacing and mounting clearance is required for each application.

Q: What compliance certifications apply to the substitute part?

A: The RCH8011NP-820L carries ROHS3 compliance and maintains EAR99 export classification. Both parts are classified as MSL 1 (Unlimited moisture sensitivity level).

Q: How do the inductance tolerances affect circuit performance?

A: The ELC11D820F specifies ±10% tolerance, while RCH8011NP-820L specifies ±15%. In frequency-dependent circuits such as filters or resonant networks, the wider tolerance of the substitute may shift operating frequency by up to 15%, requiring circuit simulation and validation.