LD2-330-R Equivalent & Substitute Parts

Part Overview

The LD2-330-R is a 33 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 2.7 A continuous current with a maximum DC resistance of 130 mOhm and operates across the temperature range of -40°C to 125°C. The part is currently active in production and RoHS compliant, making it suitable for modern electronic applications requiring fixed inductance in compact form factors.

Substitute parts are identified when equivalent inductance values, core materials, mounting types, and operating temperature ranges align with the main part specifications, while accounting for acceptable variations in current ratings, DC resistance, and tolerance specifications.

Substiute Parts

LD2-330-R

Eaton - Electronics DivisionIn Stock: 5217LD2-330-R Datasheet

Current PartRFQ

SDR0805-330KL

Bourns Inc.In Stock: 4476SDR0805-330KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LD2-330-R are identified based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 33 µH (exact match required)
• Core type: Ferrite drum core, wirewound construction
• Shielding configuration: Unshielded
• Mounting technology: Surface mount
• Operating temperature range: -40°C to 125°C minimum

Secondary Compatibility Factors:

• Current rating: Substitute must support the application's maximum current requirement
• DC resistance: Must not exceed application thermal or efficiency constraints
• Tolerance: ±10% to ±20% acceptable for most applications
• Package compliance: RoHS and environmental certifications

The SDR0805-330KL from Bourns Inc. meets all primary matching criteria with identical inductance, core material, shielding, mounting type, and operating temperature range. Variations in current rating (1.2 A vs. 2.7 A), DC resistance (140 mOhm vs. 130 mOhm), and tolerance (±10% vs. ±20%) represent trade-offs that must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

LD2-330-R Selection Criteria: The LD2-330-R is the primary choice for applications requiring the full 2.7 A current rating. This part supports higher saturation current (2.01 A) and lower DC resistance (130 mOhm maximum), making it suitable for power delivery circuits with minimal thermal dissipation requirements. The part maintains active production status with RoHS compliance and unlimited moisture sensitivity rating.

SDR0805-330KL Selection Criteria: The SDR0805-330KL from Bourns serves as a substitute for applications with current requirements not exceeding 1.2 A. This part offers tighter inductance tolerance (±10% vs. ±20%), which benefits circuits requiring precise inductance values. The ROHS3 compliance status indicates alignment with current environmental regulations. The slightly higher DC resistance (140 mOhm) and lower saturation current must be verified against circuit thermal budgets and operating margins.

Compliance Considerations: Both parts maintain RoHS compliance and unlimited moisture sensitivity ratings, supporting deployment in standard manufacturing environments without special handling. The SDR0805-330KL's ROHS3 designation reflects updated compliance documentation without affecting functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can the SDR0805-330KL replace the LD2-330-R in all applications?

A: The SDR0805-330KL is functionally equivalent only for circuits where the maximum continuous current does not exceed 1.2 A. Applications requiring the full 2.7 A rating must use the LD2-330-R or verify that the substitute's lower current rating and saturation point (1.9 A) satisfy circuit operating margins.

Q: What is the impact of the 10 mOhm difference in DC resistance?

A: The SDR0805-330KL exhibits 140 mOhm maximum DC resistance compared to 130 mOhm for the LD2-330-R. At 1.2 A, this represents an additional 12 mW of power dissipation. For applications operating at lower currents, this difference is negligible. High-current applications should evaluate thermal performance against circuit requirements.

Q: Are the physical dimensions compatible?

A: Both parts are surface mount components with nonstandard packages. The LD2-330-R measures 7.80mm L × 7.00mm W × 5.00mm H (seated), while the SDR0805-330KL measures 7.80mm L × 7.80mm W × 5.30mm H (seated). The SDR0805-330KL is slightly larger in width and height. PCB layout verification is required before substitution.

Q: Does the ±10% tolerance of the SDR0805-330KL provide an advantage?

A: The tighter ±10% tolerance of the SDR0805-330KL compared to the LD2-330-R's ±20% tolerance reduces inductance variation across production batches. This benefits circuits with tight inductance specifications or where inductance drift affects performance. Applications with wider tolerance margins may not require this specification.

Q: Are both parts available in the same packaging format?

A: Both parts are supplied in Tape & Reel (TR) packaging suitable for automated assembly. Inventory availability differs: LD2-330-R has 5200 pieces in stock, while SDR0805-330KL has 4400 pieces in stock. Packaging format compatibility supports direct substitution in manufacturing processes.

Q: What certifications apply to both parts?

A: Both parts maintain RoHS compliance and unlimited moisture sensitivity level (MSL 1), eliminating special storage or handling requirements. The SDR0805-330KL carries ROHS3 designation and REACH Unaffected status, reflecting current environmental compliance frameworks. Both parts are classified under ECCN EAR99 and HTSUS 8504.50.4000.