SC2506-330 Equivalent & Substitute Parts

Part Overview

The SC2506-330 is a 33 µH unshielded inductor manufactured by Signal Transformer, rated for 680 mA continuous current with a maximum DC resistance of 650 mOhm. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain the same inductance value, current rating capability, and mounting characteristics to ensure direct replacement without circuit redesign.

Substiute Parts

SC2506-330

Signal TransformerIn Stock: 970SC2506-330 Datasheet

Current PartRFQ

UP1B-330-R

Eaton - Electronics DivisionIn Stock: 2119UP1B-330-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC2506-330 is determined by the following critical parameters:

Inductance Value: Must be 33 µH at 100 kHz test frequency with ±20% tolerance to maintain circuit performance.

Current Rating: The substitute must support a minimum continuous current rating of 680 mA to handle the design load without thermal stress or saturation.

DC Resistance: The substitute DCR must not exceed 650 mOhm to prevent excessive power dissipation and heat generation in the application.

Shielding Configuration: Must remain unshielded to match the original electromagnetic interference characteristics.

Mounting and Package: Surface mount technology with compatible footprint dimensions is required for PCB assembly compatibility.

Compliance Standards: RoHS3 compliance and REACH unaffected status must be maintained for regulatory alignment.

The UP1B-330-R from Eaton - Electronics Division meets these substitution criteria while offering improved performance characteristics in saturation current and reduced DC resistance.

Parameter Comparison

Engineering Selection Recommendations

The UP1B-330-R is the qualified substitute for the obsolete SC2506-330. Both components maintain identical inductance values and tolerance specifications at the 100 kHz test frequency. The substitute demonstrates superior electrical performance with 820 mA continuous current rating (versus 680 mA) and 990 mA saturation current (versus 600 mA), providing increased design margin. The DC resistance of 367 mOhm in the substitute is significantly lower than the 650 mOhm maximum of the original part, resulting in reduced power dissipation.

Both parts maintain full RoHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The UP1B-330-R is currently in active production status with 2100 units available in inventory, providing supply chain continuity. The substitute is packaged in Tape & Reel format, supporting automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the UP1B-330-R directly replace the SC2506-330 without circuit modification?

A: Yes. Both inductors maintain the same 33 µH inductance value at 100 kHz with ±20% tolerance. The substitute meets or exceeds all critical electrical parameters required for the original design, including current rating, saturation characteristics, and DC resistance specifications.

Q: What are the physical compatibility considerations?

A: The SC2506-330 measures 0.364" L x 0.310" W (9.25mm x 7.87mm) with 0.065" maximum seated height. The UP1B-330-R measures 0.350" L x 0.240" W (8.89mm x 6.10mm) with 0.197" maximum seated height. PCB footprint compatibility must be verified during layout review, as the substitute has different dimensional characteristics.

Q: Does the substitute offer performance advantages?

A: The UP1B-330-R provides lower DC resistance (367 mOhm versus 650 mOhm), reducing power dissipation by approximately 44%. The higher saturation current rating (990 mA versus 600 mA) provides greater design margin for transient current conditions.

Q: Are compliance certifications equivalent?

A: Both parts are RoHS3 compliant and REACH unaffected. The substitute includes a specified operating temperature range of -40°C to 85°C, whereas the original part does not specify this parameter.

Q: What is the packaging difference?

A: The SC2506-330 packaging format is not specified in available data. The UP1B-330-R is supplied in Tape & Reel (TR) format, which is standard for automated surface mount assembly processes.