SCB73C-680 Equivalent & Substitute Parts

Part Overview

The SCB73C-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 addressing supply chain constraints, lead time requirements, or specific application performance needs while maintaining electrical and mechanical compatibility within the defined parameter tolerance bands.

Substiute Parts

SCB73C-680

Signal TransformerIn Stock: 772SCB73C-680 Datasheet

Current PartRFQ

SRR0735A-680M

Bourns Inc.In Stock: 5612SRR0735A-680M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCB73C-680 is determined by the following critical parameters:

• Inductance Value: Must be 68 µH within ±20% tolerance band
• Current Rating: Substitute must support minimum 890 mA continuous current
• DC Resistance: Must not exceed 520 mOhm maximum
• Shielding Configuration: Must be shielded to maintain EMI performance
• Operating Temperature: Must support -40°C to 125°C range
• Mounting Type: Must be surface mount compatible
• Compliance: Must maintain RoHS3 and REACH compliance status

The SRR0735A-680M from Bourns Inc. qualifies as a direct substitute based on matching inductance specification, shielding type, temperature range, and compliance requirements. While the substitute exhibits lower current rating (720 mA) and improved DC resistance (400 mOhm), these parameters remain within acceptable substitution boundaries for applications not requiring the full 890 mA rating.

Parameter Comparison

Engineering Selection Recommendations

Both the SCB73C-680 and SRR0735A-680M maintain Active product status with full regulatory compliance. Selection between these components should be based on application current requirements:

• SCB73C-680: Select when application requires the full 890 mA current rating specification
• SRR0735A-680M: Select when application current demand does not exceed 720 mA, offering improved DC resistance characteristics (400 mOhm vs 520 mOhm) and AEC-Q200 automotive qualification

Both components satisfy identical inductance, temperature, shielding, and compliance requirements. Footprint compatibility is confirmed within standard PCB assembly tolerances.

Frequently Asked Questions (FAQ)

Q: Can SRR0735A-680M replace SCB73C-680 in all applications?

A: Substitution is valid only for applications where continuous current demand does not exceed 720 mA. Applications requiring the full 890 mA rating must use the original SCB73C-680 specification.

Q: Are there physical mounting differences between these inductors?

A: Both components use identical surface mount technology with nonstandard package types. Footprint dimensions are compatible (7.40mm vs 7.30mm length/width, 4.60mm vs 3.70mm height), requiring no PCB layout modifications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both SCB73C-680 and SRR0735A-680M are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the significance of the different saturation current values?

A: The SRR0735A-680M exhibits higher saturation current (740 mA vs 500 mA), indicating superior core material performance. This does not affect substitution eligibility but reflects different core construction between manufacturers.

Q: Are there packaging format differences?

A: The SRR0735A-680M is supplied in Tape & Reel (TR) format, while SCB73C-680 packaging format is not specified. Verify packaging requirements for your procurement and assembly processes.