ELL-ATP330MB Equivalent & Substitute Parts

Part Overview

The ELL-ATP330MB is a 33 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 2 A continuous current with 59mOhm DC resistance. This component features nonstandard corner terminals and surface mount packaging in a 10.00mm x 10.00mm footprint. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

ELL-ATP330MB

Panasonic Electronic ComponentsIn Stock: 844ELL-ATP330MB Datasheet

Current PartRFQ

DR1050-330-R

Eaton - Electronics DivisionIn Stock: 3350DR1050-330-R Datasheet

SimilarRFQ

SRU1038-330Y

Bourns Inc.In Stock: 6833SRU1038-330Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-ATP330MB is determined by the following critical parameters:

• Inductance Value: Must be 33 µH, tested at 100 kHz
• Shielding Type: Must be shielded construction
• Mounting Configuration: Must be surface mount
• Current Rating: Must meet or exceed 2 A continuous current
• DC Resistance: Acceptable range up to approximately 90mOhm maximum
• Compliance: Must maintain ROHS3 compliance and MSL 1 rating
• Physical Footprint: Nonstandard package with corner terminals; dimensional compatibility required

The identified substitute parts DR1050-330-R and SRU1038-330Y satisfy these criteria through equivalent inductance values, shielded construction, surface mount configuration, and active product status with current manufacturing availability.

Parameter Comparison

Engineering Selection Recommendations

DR1050-330-R (Eaton Electronics Division): This substitute provides the highest current rating at 2.56 A with saturation current of 2.5 A, exceeding the original specification. DC resistance of 71.9mOhm remains within acceptable tolerance. Physical dimensions of 10.50mm x 10.30mm represent a minor increase from the original 10.00mm x 10.00mm footprint, with height of 5.00mm compared to 4.50mm. Active product status with ROHS3 compliance and MSL 1 rating ensures continued availability and regulatory compliance.

SRU1038-330Y (Bourns Inc.): This substitute matches the original footprint dimensions exactly at 10.00mm x 10.00mm with a lower seated height of 4.10mm. Current rating of 1.8 A equals the saturation current specification of the original part. DC resistance of 86mOhm represents the highest among the three options but remains within acceptable operating parameters. Active product status with ROHS3 compliance and MSL 1 rating provides long-term supply assurance.

Selection between these substitutes depends on specific application requirements: DR1050-330-R for applications requiring maximum current headroom, or SRU1038-330Y for space-constrained designs with identical footprint matching.

Frequently Asked Questions (FAQ)

Q: Can DR1050-330-R be used as a direct replacement for ELL-ATP330MB?

A: DR1050-330-R meets all critical electrical parameters including 33 µH inductance, shielded construction, and surface mount configuration. Physical dimensions increase slightly (10.50mm x 10.30mm versus 10.00mm x 10.00mm) and height increases from 4.50mm to 5.00mm. PCB layout verification is required to confirm spatial compatibility.

Q: What are the differences in DC resistance between the three inductors?

A: ELL-ATP330MB specifies 59mOhm, DR1050-330-R specifies 71.9mOhm maximum, and SRU1038-330Y specifies 86mOhm. Higher DC resistance increases power dissipation proportionally to the square of current. For 2 A operation, the resistance difference between parts results in approximately 0.12 mW additional dissipation for DR1050-330-R and 0.36 mW for SRU1038-330Y compared to the original specification.

Q: Are there current rating limitations when substituting?

A: SRU1038-330Y has a current rating of 1.8 A with saturation current of 1.8 A, matching the original saturation specification. Applications requiring sustained current above 1.8 A should use DR1050-330-R, which provides 2.56 A continuous rating and 2.5 A saturation current.

Q: Do all substitute parts maintain the same compliance certifications?

A: All three inductors are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level. DR1050-330-R and SRU1038-330Y additionally carry REACH Unaffected status, providing expanded regulatory coverage for international applications.

Q: What is the impact of tolerance differences on circuit performance?

A: ELL-ATP330MB specifies ±20% tolerance, while both substitutes specify ±30% tolerance. This represents a 10 percentage point increase in allowable inductance variation. Circuit designs with tight inductance requirements should account for this expanded tolerance band during validation.