LD1-220-R Equivalent & Substitute Parts Reference

Part Overview

The LD1-220-R is a 22 µH unshielded drum core wirewound inductor manufactured by Eaton Electronics Division. This surface mount component is rated for 780 mA continuous current with a maximum DC resistance of 378 mOhm and operates across the temperature range of -40°C to 125°C. The part is RoHS compliant and currently active in production with substantial inventory availability. Equivalent and substitute parts are identified when design requirements permit tolerance of minor variations in electrical characteristics, physical dimensions, or thermal specifications while maintaining functional compatibility within the application circuit.

Substiute Parts

LD1-220-R

Eaton - Electronics DivisionIn Stock: 1032LD1-220-R Datasheet

Current PartRFQ

SDR0403-220ML

Bourns Inc.In Stock: 10418SDR0403-220ML Datasheet

DirectRFQ

P0770.223NLT

Pulse ElectronicsIn Stock: 25540P0770.223NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LD1-220-R is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Inductance value: 22 µH (fixed requirement)
• Inductance tolerance: ±20% (fixed requirement)
• Mounting type: Surface Mount (fixed requirement)
• Shielding configuration: Unshielded (fixed requirement)
• Core type: Wirewound construction (fixed requirement)

Secondary Compatibility Parameters:

• Current rating: Minimum 700 mA (application dependent)
• DC resistance: Maximum 380 mOhm (application dependent)
• Operating temperature: Minimum -40°C to 125°C overlap required
• Package dimensions: Physical space constraints apply
• RoHS/REACH compliance: Regulatory alignment required

Substitute parts must satisfy all primary criteria and demonstrate acceptable performance within the secondary parameter ranges established by the application circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

SDR0403-220ML (Bourns Inc.) qualifies as a direct substitute for the LD1-220-R. This part maintains identical inductance, tolerance, and operating temperature specifications. The current rating of 760 mA is within 2.6% of the original specification, and DC resistance of 380 mOhm is within acceptable tolerance. The saturation current of 1.2 A provides enhanced headroom. Physical dimensions are nearly identical with a maximum height difference of 0.30 mm. Both parts carry equivalent RoHS3 compliance and unlimited moisture sensitivity ratings. This substitute is suitable for applications where the original part is unavailable.

P0770.223NLT (Pulse Electronics) qualifies as a similar substitute with application-dependent constraints. This part maintains identical inductance and tolerance specifications with extended operating temperature range to 130°C. The current rating of 700 mA represents a 10.3% reduction from the original specification and must be evaluated against circuit requirements. DC resistance of 370 mOhm is superior to the original. Physical dimensions differ significantly, with length increased to 6.60 mm and height reduced to 2.92 mm; PCB layout compatibility must be verified. RoHS3 compliance and unlimited moisture sensitivity are equivalent. This substitute is suitable for applications with current requirements at or below 700 mA and where physical space permits the larger footprint.

Both substitute parts carry active product status and maintain regulatory compliance equivalent to or exceeding the original component.

Frequently Asked Questions (FAQ)

Q: Can SDR0403-220ML replace LD1-220-R in all applications?

A: SDR0403-220ML meets all primary substitution criteria with negligible parameter variance. The 760 mA current rating is 2.6% lower than the original 780 mA specification. Substitution is valid for applications where the circuit current requirement does not exceed 760 mA continuous operation. Verify saturation margin requirements; SDR0403-220ML provides 1.2 A saturation current versus 890 mA in the original.

Q: What are the physical compatibility considerations for P0770.223NLT?

A: P0770.223NLT has different package dimensions: 6.60 mm length versus 4.50 mm in the original, and 2.92 mm height versus 3.20 mm. The increased length requires verification of available PCB space. The reduced height may improve thermal performance in constrained layouts. Confirm footprint compatibility with your circuit board design before implementation.

Q: Is the 10.3% current rating reduction of P0770.223NLT acceptable?

A: Current rating acceptability depends on circuit design margins. If the application operates at or below 700 mA continuous current, P0770.223NLT is suitable. If the design requires operation above 700 mA, this substitute is not appropriate. Review circuit current profiles and thermal management requirements to determine compatibility.

Q: Do all three parts have equivalent RoHS compliance?

A: LD1-220-R carries RoHS Compliant status. SDR0403-220ML and P0770.223NLT both carry ROHS3 Compliant status, which represents an enhanced compliance standard. All three parts meet RoHS requirements and are suitable for applications with RoHS mandates.

Q: What is the DC resistance impact of substitution?

A: LD1-220-R specifies 378 mOhm maximum DC resistance. SDR0403-220ML specifies 380 mOhm maximum (0.5% increase). P0770.223NLT specifies 370 mOhm maximum (1.9% decrease). All three values are within typical manufacturing tolerance bands for this component category. DC resistance impact on circuit performance is negligible for most applications; verify if your circuit has specific impedance or power dissipation constraints.

Q: Are there temperature range differences between the substitutes?

A: LD1-220-R and SDR0403-220ML both operate -40°C to 125°C. P0770.223NLT extends the upper limit to 130°C, providing 5°C additional thermal margin. All three parts cover the standard industrial temperature range. Select P0770.223NLT if your application requires operation above 125°C.