SC63LCB-330 Equivalent & Substitute Parts

Part Overview

The SC63LCB-330 is a 33 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 1.35 A continuous current with a maximum DC resistance of 175 mOhm. This component is designed for applications requiring fixed inductance in compact form factors with electromagnetic shielding. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts become necessary when the original SC63LCB-330 experiences supply constraints, extended lead times, or when design requirements permit operation within the electrical and mechanical tolerances of alternative manufacturers' offerings.

Key Parameters

Parameter	SC63LCB-330 Value
Inductance	33 µH ±20%
Current Rating (Amps)	1.35 A
DC Resistance (DCR)	175 mOhm Max
Current - Saturation (Isat)	630 mA
Shielding	Shielded
Operating Temperature Range	-40°C to 125°C
Mounting Type	Surface Mount
Size / Dimension	6.30mm L x 6.20mm W
Height - Seated (Max)	3.00 mm
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SC63LCB-330 is determined by strict alignment across the following critical parameters:

Mandatory Matching Criteria:

Inductance value: 33 µH with ±20% tolerance
Shielding: Shielded construction required
Mounting type: Surface Mount only
Inductance test frequency: 100 kHz

Allowable Variation Parameters:

Current Rating (Amps): Substitute must meet or exceed 1.35 A minimum
DC Resistance (DCR): Substitute must not exceed 175 mOhm maximum
Current - Saturation (Isat): Substitute must meet or exceed 630 mA minimum
Operating Temperature Range: Substitute must cover the -40°C to 125°C window or provide extended range
Physical dimensions: Substitute footprint must be compatible with PCB layout constraints
RoHS and REACH compliance: All substitutes must maintain equivalent regulatory status

The five substitute parts listed (B82472G6333M000, B82472P6333M000, DR73-330-R, DR74-330-R, DRA74-330-R) meet these criteria across all mandatory parameters while offering variations in current handling capability, DC resistance, and thermal performance.

Parameter Comparison

Parameter	SC63LCB-330	B82472G6333M000	B82472P6333M000	DR73-330-R	DR74-330-R	DRA74-330-R
Manufacturer	Signal Transformer	EPCOS - TDK Electronics	EPCOS - TDK Electronics	Eaton - Electronics Division	Eaton - Electronics Division	Eaton - Electronics Division
Inductance	33 µH ±20%	33 µH ±20%	33 µH ±20%	33 µH ±20%	33 µH ±20%	33 µH ±20%
Current Rating (Amps)	1.35 A	1.15 A	1.15 A	1.31 A	1.41 A	1.37 A
DC Resistance (DCR)	175 mOhm Max	150 mOhm Max	150 mOhm Max	166 mOhm	143 mOhm	151 mOhm
Current - Saturation (Isat)	630 mA	1.05 A	1.05 A	1.35 A	1.73 A	1.61 A
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded	Shielded
Operating Temperature Range	-40°C to 125°C	-55°C to 125°C	-55°C to 150°C	-40°C to 125°C	-40°C to 125°C	-40°C to 165°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Size / Dimension	6.30mm L x 6.20mm W	7.30mm L x 7.30mm W	7.30mm L x 7.30mm W	7.60mm L x 7.60mm W	7.60mm L x 7.60mm W	7.60mm L x 7.60mm W
Height - Seated (Max)	3.00 mm	4.50 mm	4.50 mm	4.65 mm	4.35 mm	4.35 mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All five substitute parts maintain Active product status and full RoHS3 compliance equivalent to the SC63LCB-330. Selection among substitutes depends on specific application constraints:

B82472G6333M000 and B82472P6333M000 (EPCOS - TDK Electronics): These parts feature reduced DC resistance (150 mOhm) compared to the original specification, resulting in lower power dissipation. B82472P6333M000 includes AEC-Q200 automotive qualification and extended operating temperature to 150°C. Both parts have larger footprints (7.30mm x 7.30mm) and increased height (4.50mm), requiring PCB layout verification.

DR73-330-R (Eaton - Electronics Division): This substitute provides current rating of 1.31 A with 166 mOhm DC resistance, maintaining the original -40°C to 125°C temperature range. Footprint is 7.60mm x 7.60mm with 4.65mm height, offering minimal height increase over the original part.

DR74-330-R (Eaton - Electronics Division): This part delivers the highest current rating (1.41 A) among substitutes with the lowest DC resistance (143 mOhm), optimizing for applications requiring maximum current handling. Footprint matches DR73-330-R at 7.60mm x 7.60mm with 4.35mm height.

DRA74-330-R (Eaton - Electronics Division): This substitute includes AEC-Q200 automotive qualification and extends operating temperature to 165°C. Current rating is 1.37 A with 151 mOhm DC resistance. Footprint and height match DR74-330-R specifications.

Frequently Asked Questions (FAQ)

Q: Can B82472G6333M000 or B82472P6333M000 be used as direct replacements for SC63LCB-330?

A: Both EPCOS parts meet the mandatory electrical parameters (33 µH inductance, shielded, surface mount, 100 kHz test frequency). However, their larger footprint (7.30mm x 7.30mm versus 6.30mm x 6.20mm) and increased height (4.50mm versus 3.00mm) require PCB layout verification. Current rating of 1.15 A is below the original 1.35 A specification, making these suitable only for applications with lower current requirements.

Q: What is the difference between DR73-330-R and DR74-330-R?

A: Both Eaton parts share identical footprint (7.60mm x 7.60mm) and temperature range (-40°C to 125°C). DR74-330-R provides superior performance with 1.41 A current rating versus 1.31 A, and lower DC resistance (143 mOhm versus 166 mOhm). DR74-330-R height is 4.35mm compared to DR73-330-R at 4.65mm. Selection depends on current handling requirements and available PCB height clearance.

Q: Is DRA74-330-R suitable for automotive applications?

A: DRA74-330-R carries AEC-Q200 automotive qualification and operates across -40°C to 165°C, exceeding the original SC63LCB-330 temperature range. This part is appropriate for automotive-grade designs requiring extended thermal performance and industry certification.

Q: Do all substitute parts maintain the same moisture sensitivity rating?

A: Yes. All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity level, matching the original SC63LCB-330 specification. No special moisture handling or baking procedures are required for any of these components.

Q: Which substitute offers the best DC resistance performance?

A: DR74-330-R provides the lowest DC resistance at 143 mOhm maximum, followed by B82472G6333M000 and B82472P6333M000 at 150 mOhm. Lower DC resistance reduces power dissipation and heat generation in the inductor during operation.

Q: Are there physical space constraints I should consider when selecting a substitute?

A: Yes. The original SC63LCB-330 has the smallest footprint (6.30mm x 6.20mm) and lowest height (3.00mm). All substitutes have larger footprints ranging from 7.30mm to 7.60mm and heights from 4.65mm to 4.50mm. Verify PCB layout clearance before substitution, particularly in space-constrained designs.

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