SC52LC-6R8 Equivalent & Substitute Parts

Part Overview

The SC52LC-6R8 is a 6.8 µH shielded inductor manufactured by Signal Transformer, designed for surface mount applications requiring fixed inductance in compact form factors. This component is rated for 1.6 A continuous current with a maximum DC resistance of 105 mOhm and operates across the temperature range of -40°C to 125°C. The part maintains Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent inductance values, compatible current ratings, and matching shielding characteristics are required for design flexibility or supply chain continuity.

Key Parameters

Parameter	Value
Inductance	6.8 µH
Inductance Tolerance	±30%
Current Rating	1.6 A
Current - Saturation (Isat)	950 mA
DC Resistance (DCR)	105 mOhm Max
Shielding	Shielded
Mounting Type	Surface Mount
Size / Dimension	5.30 mm x 5.30 mm
Height - Seated (Max)	2.00 mm
Operating Temperature	-40°C ~ 125°C
Inductance Frequency - Test	100 kHz
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SC52LC-6R8 is determined by the following critical parameters:

Inductance Value: 6.8 µH with ±30% tolerance
Current Rating: Minimum 1.6 A continuous current capability
Saturation Current (Isat): Minimum 950 mA
DC Resistance (DCR): Maximum 105 mOhm
Shielding: Shielded construction required
Mounting Type: Surface mount configuration
Package Dimensions: Compatible with 5.30 mm x 5.30 mm footprint and 2.00 mm maximum height
Operating Temperature Range: -40°C to 125°C minimum
Compliance: RoHS3 compliant, MSL 1

The VLCF5020T-6R8N1R1 from TDK Corporation qualifies as a substitute when the application can accommodate the specified parameter variations listed in the comparison table below.

Parameter Comparison

Parameter	SC52LC-6R8 (Main Part)	VLCF5020T-6R8N1R1 (Substitute)	Compatibility Notes
Manufacturer	Signal Transformer	TDK Corporation	Different manufacturer
Inductance	6.8 µH	6.8 µH	Identical
Inductance Tolerance	±30%	±30%	Identical
Current Rating (Amps)	1.6 A	1.11 A	Substitute rated lower; verify application requirements
Current - Saturation (Isat)	950 mA	1.11 A	Substitute rated higher
DC Resistance (DCR)	105 mOhm Max	122 mOhm Max	Substitute has higher DCR; affects power dissipation
Shielding	Shielded	Shielded	Identical
Core Type	Not specified	Ferrite Drum Core, Wirewound	Substitute core type specified
Size / Dimension	5.30 mm x 5.30 mm	5.00 mm x 5.00 mm	Substitute is slightly smaller; footprint compatible
Height - Seated (Max)	2.00 mm	2.00 mm	Identical
Operating Temperature	-40°C ~ 125°C	-40°C ~ 105°C	Substitute has lower upper temperature limit
Inductance Frequency - Test	100 kHz	100 kHz	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Identical

Engineering Selection Recommendations

The VLCF5020T-6R8N1R1 is an Active product from TDK Corporation with RoHS3 compliance and MSL 1 rating, matching the regulatory and environmental compliance profile of the SC52LC-6R8.

Selection of the substitute part requires evaluation of the following parameter deviations:

Current Rating: The substitute is rated at 1.11 A versus the main part's 1.6 A. Applications requiring the full 1.6 A rating cannot use this substitute.
DC Resistance: The substitute exhibits 122 mOhm maximum DCR compared to 105 mOhm maximum. This 17 mOhm increase results in higher power dissipation at equivalent current levels.
Operating Temperature Upper Limit: The substitute operates to 105°C maximum versus 125°C for the main part. Applications requiring operation above 105°C cannot use this substitute.
Physical Dimensions: The substitute footprint is 5.00 mm x 5.00 mm, which is smaller than the main part's 5.30 mm x 5.30 mm. PCB layout compatibility must be confirmed.

Both parts are shielded inductors with identical inductance values, tolerance, height, test frequency, and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the VLCF5020T-6R8N1R1 be used in all applications where the SC52LC-6R8 is specified?

A: No. The substitute has a lower continuous current rating (1.11 A versus 1.6 A) and a lower maximum operating temperature (105°C versus 125°C). Applications operating at or above 105°C or requiring continuous currents above 1.11 A must use the original part.

Q: What is the impact of the higher DC resistance in the substitute part?

A: The VLCF5020T-6R8N1R1 has a maximum DCR of 122 mOhm compared to 105 mOhm in the SC52LC-6R8. At 1.0 A, this results in approximately 17 mW additional power dissipation. Thermal design must account for this difference.

Q: Are the physical dimensions compatible on the PCB?

A: The substitute part has a smaller footprint (5.00 mm x 5.00 mm versus 5.30 mm x 5.30 mm) and identical height (2.00 mm maximum). The smaller footprint is compatible with pads designed for the larger main part, but PCB layout must be verified to ensure no clearance violations.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the SC52LC-6R8 and VLCF5020T-6R8N1R1 are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Both are packaged in Tape & Reel format.

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

A: The SC52LC-6R8 has an Isat of 950 mA, while the VLCF5020T-6R8N1R1 has an Isat of 1.11 A. The substitute exhibits higher saturation current, which may provide improved performance margin in applications approaching saturation limits.

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