ELL-ATP221MB Equivalent & Substitute Parts

Part Overview

The ELL-ATP221MB is a 220 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 700 mA with a DC resistance of 360mOhm. This surface mount component features nonstandard corner terminals and is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts is essential for ongoing design support, production continuity, and component sourcing in applications requiring 220 µH inductance at 700 mA current ratings.

Substiute Parts

ELL-ATP221MB

Panasonic Electronic ComponentsIn Stock: 854ELL-ATP221MB Datasheet

Current PartRFQ

B82464G4224M000

EPCOS - TDK ElectronicsIn Stock: 2070B82464G4224M000 Datasheet

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SRU1038-221Y

Bourns Inc.In Stock: 15600SRU1038-221Y Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELL-ATP221MB are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

• Inductance: 220 µH (exact match required)
• Current Rating: minimum 700 mA or higher
• Shielding: Shielded construction
• Mounting Type: Surface Mount
• RoHS Compliance: ROHS3 Compliant

Secondary Compatibility Factors:

• DC Resistance (DCR): tolerance range 360mOhm to 565mOhm acceptable for equivalent functionality
• Tolerance: ±20% to ±30% acceptable
• Package dimensions: nonstandard packages with similar footprints (10.00mm x 10.00mm to 10.40mm x 10.40mm)
• Height: 4.10mm to 4.80mm seated height range

The two identified substitute parts meet these criteria while maintaining electrical performance within acceptable operating parameters for 220 µH shielded inductor applications.

Parameter Comparison

Engineering Selection Recommendations

B82464G4224M000 (EPCOS - TDK Electronics): This substitute provides the closest electrical match to the ELL-ATP221MB with identical 220 µH inductance, ±20% tolerance, and 700 mA current rating. The DC resistance of 440mOhm is marginally higher than the original 360mOhm specification. The part is active in production with AEC-Q200 automotive qualification, ROHS3 compliance, and an extended operating temperature range of -55°C to 150°C. Footprint dimensions are slightly larger (10.40mm x 10.40mm) with a maximum seated height of 4.80mm. This part is recommended for applications requiring automotive-grade reliability and extended temperature performance.

SRU1038-221Y (Bourns Inc.): This substitute maintains identical 220 µH inductance and surface mount configuration with matching 10.00mm x 10.00mm footprint dimensions. The current rating is 650 mA, which is 50 mA lower than the original specification, and the DC resistance is 565mOhm, representing a significant increase from the original 360mOhm. Tolerance is ±30% compared to the original ±20%. The part is active in production with ROHS3 compliance and an operating temperature range of -40°C to 125°C. This part is suitable for applications where the 650 mA current rating is sufficient and higher DC resistance is acceptable.

Both substitute parts are active in production, ensuring long-term availability compared to the obsolete ELL-ATP221MB. Selection between these options depends on specific application requirements regarding current rating, DC resistance, temperature range, and footprint constraints.

Frequently Asked Questions (FAQ)

Q: Can the B82464G4224M000 be used as a direct replacement for the ELL-ATP221MB?

A: The B82464G4224M000 is electrically compatible for most applications. Both parts share 220 µH inductance, ±20% tolerance, and 700 mA current rating. The primary differences are the increased DC resistance (440mOhm vs. 360mOhm) and slightly larger footprint (10.40mm x 10.40mm vs. 10.00mm x 10.00mm). PCB layout verification is required to confirm the larger dimensions fit within available space.

Q: Is the SRU1038-221Y suitable for applications requiring 700 mA?

A: The SRU1038-221Y has a maximum current rating of 650 mA, which is 50 mA below the original ELL-ATP221MB specification. This part is suitable only for applications where the actual operating current does not exceed 650 mA. For designs requiring the full 700 mA rating, the B82464G4224M000 is the appropriate choice.

Q: How does the increased DC resistance of substitute parts affect circuit performance?

A: The ELL-ATP221MB has 360mOhm DCR, while the B82464G4224M000 has 440mOhm and the SRU1038-221Y has 565mOhm. Higher DC resistance increases power dissipation and voltage drop across the inductor. Circuit simulations should verify that the increased resistance does not degrade performance in applications sensitive to inductor losses, such as switching power supplies or high-frequency filters.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all three parts—the original ELL-ATP221MB and both substitutes (B82464G4224M000 and SRU1038-221Y)—are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What are the footprint considerations when substituting these parts?

A: The ELL-ATP221MB and SRU1038-221Y share identical 10.00mm x 10.00mm footprints with similar heights (4.50mm vs. 4.10mm). The B82464G4224M000 has a slightly larger footprint of 10.40mm x 10.40mm with a maximum height of 4.80mm. PCB layout verification is necessary before substitution to ensure the larger dimensions do not conflict with adjacent components or routing.