LD1-150-R Equivalent & Substitute Parts Reference

Part Overview

The LD1-150-R is a 15 µH unshielded drum core wirewound inductor manufactured by Eaton Electronics Division. This surface mount component is rated for 990 mA continuous current with a maximum DC resistance of 235 mOhm and operates across the temperature range of -40°C to 125°C. The part is RoHS compliant and currently active in production with 867 pieces available in inventory.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits selection from qualified alternatives that maintain functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

LD1-150-R

Eaton - Electronics DivisionIn Stock: 902LD1-150-R Datasheet

Current PartRFQ

SDR0403-150ML

Bourns Inc.In Stock: 16192SDR0403-150ML Datasheet

DirectRFQ

P0770.153NLT

Pulse ElectronicsIn Stock: 7759P0770.153NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LD1-150-R are qualified based on the following criteria:

Electrical Parameters (Non-Negotiable):

• Inductance value: 15 µH ±20% tolerance
• Current rating: minimum 990 mA continuous
• DC resistance: maximum 235 mOhm
• Operating temperature range: minimum -40°C to 125°C coverage
• Unshielded configuration

Mechanical Parameters (Design-Dependent):

• Surface mount package type
• Physical dimensions compatible with PCB layout constraints
• Height clearance requirements

Compliance Parameters:

• RoHS compliance status (RoHS Compliant or ROHS3 Compliant acceptable)
• Moisture sensitivity level MSL 1 (Unlimited)

The two substitute parts identified (SDR0403-150ML and P0770.153NLT) meet the core electrical requirements while presenting variations in physical dimensions and saturation current characteristics that may influence selection based on specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

LD1-150-R (Eaton Electronics Division) - Primary Selection

Use as the primary component when design specifications explicitly require Eaton LD series inductors or when the original design validation has been completed with this part number. RoHS compliant status and active production status support continued use in new designs.

SDR0403-150ML (Bourns Inc.) - Direct Substitute

This part qualifies as a direct substitute when supply of the LD1-150-R is unavailable. The SDR0403-150ML maintains identical inductance, tolerance, and operating temperature range. The current rating of 920 mA is lower than the LD1-150-R specification of 990 mA; therefore, this substitute is suitable only for applications where the actual operating current does not exceed 920 mA. The DC resistance of 240 mOhm is within acceptable tolerance of the 235 mOhm maximum specification. The height dimension increases from 3.20 mm to 3.50 mm; verify PCB clearance before substitution. ROHS3 compliance and significantly higher inventory (16098 pieces) support availability.

P0770.153NLT (Pulse Electronics) - Alternative Substitute

This part qualifies as an alternative substitute when the SDR0403-150ML is unavailable or when the physical dimension profile is advantageous. The current rating of 900 mA is lower than the LD1-150-R specification; this substitute is suitable only for applications where actual operating current does not exceed 900 mA. The DC resistance of 230 mOhm is superior to the 235 mOhm maximum specification. The physical dimensions differ significantly (6.60 x 4.45 x 2.92 mm versus 4.50 x 4.00 x 3.20 mm); PCB layout compatibility must be verified. The extended operating temperature range to 130°C provides additional thermal margin. ROHS3 compliance and adequate inventory (7736 pieces) support availability.

Frequently Asked Questions (FAQ)

Q: Can the SDR0403-150ML be used as a direct replacement for the LD1-150-R in all applications?

A: The SDR0403-150ML is electrically compatible for applications where the operating current does not exceed 920 mA. The LD1-150-R is rated for 990 mA; therefore, if the circuit design requires the full 990 mA rating, the SDR0403-150ML is not suitable. Additionally, the increased height (3.50 mm versus 3.20 mm) requires verification of PCB clearance.

Q: What is the primary difference between the two substitute parts?

A: The SDR0403-150ML maintains the same physical footprint (4.50 x 4.00 mm) as the LD1-150-R but with increased height. The P0770.153NLT has a larger footprint (6.60 x 4.45 mm) but lower height (2.92 mm). Current ratings differ: SDR0403-150ML at 920 mA and P0770.153NLT at 900 mA, both lower than the LD1-150-R at 990 mA.

Q: Are all three parts RoHS compliant?

A: Yes. The LD1-150-R carries RoHS Compliant status. Both substitute parts carry ROHS3 Compliant status, which represents an updated compliance standard. All three parts meet RoHS requirements.

Q: What should be verified before substituting either alternative part?

A: Verify the following before substitution: (1) Actual operating current in the circuit does not exceed the substitute part's current rating; (2) PCB layout accommodates the substitute part's physical dimensions; (3) Thermal management requirements are met with the substitute part's DC resistance; (4) No design-specific requirements mandate the original manufacturer.

Q: Which substitute part has better availability?

A: The SDR0403-150ML (Bourns) has the highest inventory at 16098 pieces, followed by P0770.153NLT (Pulse Electronics) at 7736 pieces. The LD1-150-R (Eaton) has 867 pieces in stock.

Q: Can the P0770.153NLT be used in applications requiring the full 990 mA rating?

A: No. The P0770.153NLT is rated for 900 mA maximum continuous current. Applications requiring 990 mA operation must use the LD1-150-R or verify that actual operating current remains below 900 mA.