SC53LC-680 Equivalent & Substitute Parts

Part Overview

The SC53LC-680 is a 68 µH shielded inductor manufactured by Signal Transformer, designed for surface mount applications requiring moderate current handling and low DC resistance. This component is classified as Active product status with full RoHS3 compliance. Substitute parts become necessary when primary inventory is unavailable, when extended temperature range operation is required, or when alternative core materials offer improved performance characteristics for specific circuit applications.

Substiute Parts

SC53LC-680

Signal TransformerIn Stock: 949SC53LC-680 Datasheet

Current PartRFQ

B82472G4683M000

EPCOS - TDK ElectronicsIn Stock: 4335B82472G4683M000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The B82472G4683M000 qualifies as a direct substitute for the SC53LC-680 based on the following alignment of critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Identical inductance value: 68 µH at 100 kHz test frequency
• Matching inductance tolerance: ±20%
• Current rating within acceptable range: 690 mA (substitute) vs. 730 mA (main part)
• DC resistance within specification: 460 mOhm Max (substitute) vs. 545 mOhm Max (main part)
• Shielded construction maintained in both designs

Mechanical Compatibility Criteria:

• Surface mount configuration preserved
• Nonstandard package classification maintained
• Physical footprint compatible with circuit board layout requirements

Compliance & Environmental Criteria:

• RoHS3 compliance maintained
• MSL Level 1 (Unlimited) moisture sensitivity in both parts
• Operating temperature range extended in substitute: -55°C ~ 125°C (substitute) vs. -40°C ~ 125°C (main part)

Parameter Comparison

Engineering Selection Recommendations

Selection between SC53LC-680 and B82472G4683M000 is determined by application-specific requirements and environmental constraints:

SC53LC-680 Selection Criteria:

• Compact footprint requirement: 5.30mm x 5.30mm vs. 7.30mm x 7.30mm
• Higher current rating requirement: 730 mA rated current
• Space-constrained PCB layouts with height limitation to 3.00mm

B82472G4683M000 Selection Criteria:

• Extended low-temperature operation: -55°C minimum vs. -40°C minimum
• Lower DC resistance priority: 460 mOhm Max reduces power dissipation
• Higher saturation current margin: 600 mA Isat provides additional headroom
• Ferrite drum core construction offers alternative magnetic characteristics
• Larger physical dimensions acceptable in application

Both parts maintain full RoHS3 compliance, MSL Level 1 rating, and identical inductance specifications at 100 kHz test frequency. The substitute part offers improved thermal range and reduced resistive losses at the trade-off of increased physical dimensions.

Frequently Asked Questions (FAQ)

Q: Can B82472G4683M000 directly replace SC53LC-680 in existing PCB designs?

A: Direct replacement requires PCB layout verification. The substitute part is 1.73mm larger in length and width (7.30mm vs. 5.30mm) and 0.50mm taller (4.60mm vs. 3.00mm). Footprint compatibility must be confirmed before implementation.

Q: What is the impact of the 40 mA current rating difference?

A: The SC53LC-680 is rated at 730 mA while B82472G4683M000 is rated at 690 mA. For applications operating below 690 mA, this difference is not limiting. Applications requiring sustained current above 690 mA must use the SC53LC-680.

Q: How does DC resistance affect circuit performance?

A: The B82472G4683M000 exhibits 460 mOhm Max DCR compared to 545 mOhm Max in the SC53LC-680. Lower resistance reduces I²R power dissipation and heat generation, beneficial for thermal-sensitive applications.

Q: Are both parts suitable for low-temperature applications?

A: The B82472G4683M000 operates to -55°C minimum, extending the lower temperature range by 15°C compared to the SC53LC-680 at -40°C minimum. For applications below -40°C, the substitute part is required.

Q: What core material differences exist between these inductors?

A: The SC53LC-680 uses unspecified core material, while B82472G4683M000 employs ferrite drum core construction. Ferrite cores provide shielding benefits and stable inductance across temperature ranges.

Q: Do both parts meet the same compliance standards?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (Unlimited) moisture sensitivity ratings. Compliance profiles are equivalent.