ELJ-FA221KF Equivalent & Substitute Parts

Part Overview

The Panasonic ELJ-FA221KF is a 220 µH unshielded wirewound inductor rated for 45 mA with a maximum DC resistance of 21 Ohm, packaged in 1210 (3225 Metric) surface mount format. This component is classified as obsolete, necessitating identification of active equivalent parts that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

ELJ-FA221KF

Panasonic Electronic ComponentsIn Stock: 1226ELJ-FA221KF Datasheet

Current PartRFQ

B82422H1224K000

EPCOS - TDK ElectronicsIn Stock: 23185B82422H1224K000 Datasheet

DirectRFQ

IMC1210BN221K

Vishay DaleIn Stock: 1119IMC1210BN221K Datasheet

DirectRFQ

IMC1210EB221K

Vishay DaleIn Stock: 1047IMC1210EB221K Datasheet

DirectRFQ

IMC1210ER221K

Vishay DaleIn Stock: 687IMC1210ER221K Datasheet

DirectRFQ

IMC1210SY221K

Vishay DaleIn Stock: 693IMC1210SY221K Datasheet

DirectRFQ

NLCV32T-221K-EF

TDK CorporationIn Stock: 7471NLCV32T-221K-EF Datasheet

DirectRFQ

NLCV32T-221K-PF

TDK CorporationIn Stock: 85411NLCV32T-221K-PF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

• Inductance: 220 µH ±10%
• Package / Case: 1210 (3225 Metric)
• Mounting Type: Surface Mount
• Shielding: Unshielded

Compatible Parameters (May Exceed Original Specification):

• Current Rating: Substitute must equal or exceed 45 mA
• DC Resistance: Substitute must equal or not exceed 21 Ohm Max
• Operating Temperature: Substitute range must encompass or exceed -20°C ~ 85°C

Substitute parts are grouped by their ability to satisfy these criteria while maintaining form factor and electrical performance within the specified tolerance band.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts satisfy the critical electrical and mechanical parameters required for direct replacement of the ELJ-FA221KF. Selection should be based on product status and compliance requirements:

Preferred Substitutes (Active Status):

• IMC1210EB221K, IMC1210ER221K, IMC1210SY221K (Vishay Dale): Exact DCR match at 21 Ohm Max, current rating of 50 mA exceeds the 45 mA requirement. IMC1210EB221K carries ROHS3 compliance.
• B82422H1224K000 (EPCOS - TDK Electronics): Reduced DCR of 10.9 Ohm, elevated current rating of 100 mA, extended operating temperature range to -55°C ~ 150°C, AEC-Q200 rated.
• NLCV32T-221K-EF (TDK Corporation): Reduced DCR of 10.92 Ohm, current rating of 80 mA, ROHS3 compliant.

Restricted Substitute (Not For New Designs):

• NLCV32T-221K-PF (TDK Corporation): Functionally equivalent but designated Not For New Designs; suitable only for legacy system maintenance.

Avoid:

• IMC1210BN221K, IMC1210SY221K: RoHS non-compliant variants where compliant alternatives exist.

Frequently Asked Questions (FAQ)

Q: Can IMC1210EB221K directly replace ELJ-FA221KF? A: Yes. Both components share identical inductance (220 µH), tolerance (±10%), DC resistance (21 Ohm Max), and package format (1210 / 3225 Metric). The IMC1210EB221K current rating of 50 mA exceeds the original 45 mA specification, and its operating temperature range (-55°C ~ 125°C) encompasses the original range (-20°C ~ 85°C).

Q: What is the difference between IMC1210BN221K, IMC1210EB221K, IMC1210ER221K, and IMC1210SY221K? A: All four Vishay Dale variants are electrically identical (220 µH, 50 mA, 21 Ohm DCR). Differences exist only in packaging format: BN is Bulk, EB is Bulk, ER is Cut Tape & Digi-Reel, and SY is Tape & Reel. IMC1210EB221K is ROHS3 compliant; others vary in compliance status.

Q: Why do B82422H1224K000 and NLCV32T-221K-EF have lower DC resistance values? A: Lower DC resistance (10.9 Ohm and 10.92 Ohm respectively) results from different core material and winding design. These parts remain electrically compatible substitutes as they meet the maximum DCR specification of 21 Ohm and provide superior performance characteristics.

Q: Is NLCV32T-221K-PF suitable for new designs? A: No. NLCV32T-221K-PF is designated Not For New Designs. Use NLCV32T-221K-EF instead, which is functionally identical and carries Active product status.

Q: What packaging options are available for the Vishay Dale IMC-1210 series? A: IMC1210EB221K (Bulk), IMC1210ER221K (Cut Tape & Digi-Reel), and IMC1210SY221K (Tape & Reel) provide flexibility for different procurement and assembly workflows while maintaining identical electrical specifications.