SC63LCB-680 Equivalent & Substitute Parts

Part Overview

The SC63LCB-680 is a 68 µH shielded inductor manufactured by Signal Transformer, rated for 920 mA continuous current with a maximum DC resistance of 338 mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is ROHS3 compliant. The part is currently active in production with 998 units in stock.

Equivalent and substitute parts are identified when they maintain the same inductance value, tolerance, and core electrical specifications while meeting the same environmental and compliance standards. Substitutes may vary in physical dimensions, current ratings, and DC resistance within acceptable engineering parameters.

Substiute Parts

SC63LCB-680

Signal TransformerIn Stock: 1027SC63LCB-680 Datasheet

Current PartRFQ

DR73-680-R

Eaton - Electronics DivisionIn Stock: 2649DR73-680-R Datasheet

MFR RecommendedRFQ

DRA74-680-R

Eaton - Electronics DivisionIn Stock: 2314DRA74-680-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SC63LCB-680 are qualified based on the following critical parameters:

• Inductance Value: Must be 68 µH with ±20% tolerance
• Shielding: Must be shielded construction
• Mounting Type: Must be surface mount
• Inductance Test Frequency: Must be measured at 100 kHz
• RoHS Compliance: Must meet ROHS3 standard
• Operating Temperature Range: Must support -40°C minimum and 125°C minimum upper limit

The substitute parts DR73-680-R and DRA74-680-R both meet these core requirements. Variations in current rating, DC resistance, and physical dimensions are acceptable provided the inductance specification and environmental ratings are maintained.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SC63LCB-680, DR73-680-R, and DRA74-680-R—are active production components with ROHS3 compliance and REACH unaffected status. Selection between these parts depends on application-specific requirements:

SC63LCB-680 is the primary part with the smallest footprint (6.30mm x 6.20mm, 3.00mm height) and lowest profile, suitable for space-constrained applications.

DR73-680-R provides a shielded drum core wirewound construction with ferrite material core, matching the original operating temperature range and offering comparable current handling at 890 mA.

DRA74-680-R offers the highest current rating at 996 mA, the lowest DC resistance at 286 mOhm, and an extended operating temperature range to 165°C. This part includes AEC-Q200 automotive qualification, making it suitable for automotive and high-reliability applications.

Physical dimension differences must be verified against PCB layout constraints before substitution.

Frequently Asked Questions (FAQ)

Q: Can DR73-680-R be used as a direct replacement for SC63LCB-680?

A: DR73-680-R qualifies as a substitute based on matching inductance (68 µH), tolerance (±20%), shielding, and operating temperature range. However, it has larger physical dimensions (7.60mm x 7.60mm vs. 6.30mm x 6.20mm) and slightly higher DC resistance (358 mOhm vs. 338 mOhm max). PCB layout compatibility must be confirmed.

Q: What are the key differences between DR73-680-R and DRA74-680-R?

A: Both are Eaton products with 68 µH inductance. DR73-680-R uses drum core wirewound construction with ferrite core material and 890 mA rating. DRA74-680-R uses wirewound construction with 996 mA rating, lower DC resistance (286 mOhm), extended temperature range to 165°C, and AEC-Q200 qualification. DRA74-680-R is taller (4.35mm vs. 4.65mm).

Q: Are all three parts ROHS3 compliant?

A: Yes. SC63LCB-680, DR73-680-R, and DRA74-680-R are all ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: Which substitute part has the lowest DC resistance?

A: DRA74-680-R has the lowest DC resistance at 286 mOhm, compared to 338 mOhm (SC63LCB-680) and 358 mOhm (DR73-680-R).

Q: Can DRA74-680-R be used in applications requiring -40°C to 125°C operation?

A: Yes. DRA74-680-R supports -40°C to 165°C, which exceeds the -40°C to 125°C requirement of SC63LCB-680.

Q: What is the packaging format for substitute parts?

A: Both DR73-680-R and DRA74-680-R are supplied in Tape & Reel (TR) format, suitable for automated assembly processes.