SCB75C-220 Equivalent & Substitute Parts

Part Overview

The SCB75C-220 is a 22 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 1.7 A continuous current with a maximum DC resistance of 110 mOhm. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance value and current rating category.

Substiute Parts

SCB75C-220

Signal TransformerIn Stock: 1032SCB75C-220 Datasheet

Current PartRFQ

SRR0745A-220M

Bourns Inc.In Stock: 6287SRR0745A-220M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCB75C-220 is determined by the following critical parameters:

• Inductance Value: 22 µH ±20% tolerance
• Current Rating: Minimum 1.7 A continuous current capability
• DC Resistance: Maximum 110 mOhm to maintain circuit performance
• Shielding: Shielded construction required
• Mounting: Surface mount package
• Operating Temperature: -40°C to 125°C range
• Compliance: RoHS3 compliant status

The substitute part SRR0745A-220M from Bourns Inc. meets all specified electrical and mechanical requirements within these parameters.

Parameter Comparison

Engineering Selection Recommendations

The SRR0745A-220M qualifies as a direct substitute for the SCB75C-220 based on the following criteria:

• Both components maintain identical inductance values and tolerance specifications at the 1 kHz test frequency
• The SRR0745A-220M demonstrates superior electrical characteristics with lower DC resistance (96 mOhm vs. 110 mOhm) and higher saturation current (1.75 A vs. 1.13 A), providing enhanced performance margin
• Current ratings are equivalent (1.65 A vs. 1.7 A), meeting circuit requirements
• Both parts are Active status products with ROHS3 compliance and identical moisture sensitivity ratings
• Physical dimensions are compatible with standard surface mount assembly processes
• The SRR0745A-220M includes AEC-Q200 automotive qualification, providing additional reliability assurance

Frequently Asked Questions (FAQ)

Q: Can the SRR0745A-220M replace the SCB75C-220 in existing designs?

A: Yes. Both inductors share identical inductance values, tolerance specifications, operating temperature ranges, and shielding characteristics. The SRR0745A-220M exhibits lower DC resistance and higher saturation current, making it electrically superior for the specified application.

Q: What are the physical compatibility considerations?

A: The SRR0745A-220M has slightly smaller footprint dimensions (7.30mm x 7.30mm vs. 7.40mm x 7.40mm) and lower seated height (4.70mm vs. 5.50mm). These differences are compatible with standard PCB layouts designed for the SCB75C-220.

Q: Are there compliance differences between these parts?

A: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings. The SRR0745A-220M includes AEC-Q200 automotive qualification, which the SCB75C-220 does not specify.

Q: How do the current ratings compare?

A: The SCB75C-220 is rated for 1.7 A continuous current, while the SRR0745A-220M is rated for 1.65 A. Both ratings are functionally equivalent for standard circuit applications. The SRR0745A-220M provides higher saturation current (1.75 A vs. 1.13 A), indicating better transient performance.

Q: What is the significance of DC resistance differences?

A: The SRR0745A-220M has lower maximum DC resistance (96 mOhm vs. 110 mOhm), resulting in reduced power dissipation and improved thermal performance in the same operating conditions.