SC52LC-101 Equivalent & Substitute Parts

Part Overview

The SC52LC-101 is a 100 µH shielded inductor manufactured by Signal Transformer, rated for 380 mA continuous current with a maximum DC resistance of 1.65Ohm. This component is designed for surface mount applications in nonstandard package configurations and operates across the industrial temperature range of -40°C to 125°C. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting the same operational requirements and compliance standards.

Substiute Parts

SC52LC-101

Signal TransformerIn Stock: 948SC52LC-101 Datasheet

Current PartRFQ

LD1-101-R

Eaton - Electronics DivisionIn Stock: 760LD1-101-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LD1-101-R from Eaton - Electronics Division qualifies as a substitute based on the following electrical and mechanical alignment criteria:

Matching Parameters:

• Inductance value: 100 µH (identical)
• Inductance test frequency: 100 kHz (identical)
• Current rating: 360 mA (within 95% of main part 380 mA)
• DC resistance: 1.72Ohm Max (within tolerance band of main part 1.65Ohm Max)
• Operating temperature range: -40°C to 125°C (identical)
• Mounting type: Surface Mount (identical)
• RoHS compliance: Active status maintained
• Moisture sensitivity: MSL 1 (Unlimited) - equivalent

Substitution Basis: The LD1-101-R maintains the core 100 µH inductance specification and operates within the same temperature envelope. The current rating differential of 20 mA and DCR variance of 0.07Ohm remain within acceptable engineering margins for this component category. Both parts are surface mount, RoHS compliant, and carry unlimited moisture sensitivity ratings.

Parameter Comparison

Engineering Selection Recommendations

SC52LC-101 (Primary Selection): Use the SC52LC-101 when shielded inductor performance is required to minimize electromagnetic interference in the circuit. The shielded design and specified saturation current of 230 mA define the primary application envelope. RoHS3 compliance and Active product status confirm ongoing manufacturer support.

LD1-101-R (Substitute Selection): The LD1-101-R qualifies as a substitute when circuit design permits unshielded operation and the application current requirement does not exceed 360 mA. The substitute offers tighter inductance tolerance (±10% versus ±20%) and higher saturation current (450 mA versus 230 mA), providing design margin in current-limited applications. The smaller footprint (4.50mm x 4.00mm versus 5.30mm x 5.30mm) may provide layout advantages, though the increased height (4.60mm versus 2.00mm) requires PCB clearance verification. Both parts maintain identical operating temperature range and unlimited moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can LD1-101-R replace SC52LC-101 in all applications?

A: No. The LD1-101-R is unshielded while the SC52LC-101 is shielded. Applications requiring electromagnetic shielding must use the SC52LC-101. Verify circuit design permits unshielded inductor operation before substitution.

Q: What is the current rating difference between these parts?

A: The SC52LC-101 is rated for 380 mA continuous current; the LD1-101-R is rated for 360 mA. This 20 mA difference represents a 5.3% reduction. Confirm the application current requirement does not exceed 360 mA before using the substitute.

Q: Why does the LD1-101-R have higher saturation current?

A: The LD1-101-R saturation current (450 mA) exceeds the SC52LC-101 (230 mA) due to core material and construction differences. The Eaton part uses ferrite drum core wirewound construction versus the Signal Transformer shielded design. This provides additional current margin in the substitute but does not affect the 360 mA continuous rating limit.

Q: Are there physical size constraints when substituting?

A: Yes. The LD1-101-R footprint is smaller (4.50mm x 4.00mm versus 5.30mm x 5.30mm) but taller (4.60mm versus 2.00mm). Verify PCB layout accommodates the increased height and that the smaller footprint does not create routing conflicts.

Q: Do both parts meet the same compliance standards?

A: Both parts are RoHS compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. The SC52LC-101 specifies RoHS3 compliance; the LD1-101-R specifies RoHS compliance. Both are suitable for industrial applications requiring environmental compliance.

Q: What is the inductance tolerance difference?

A: The SC52LC-101 has ±20% inductance tolerance; the LD1-101-R has ±10%. The substitute offers tighter tolerance control, which may benefit applications with strict inductance specifications.