SC2506-221 Equivalent & Substitute Parts

Part Overview

The SC2506-221 is a 220 µH unshielded fixed inductor manufactured by Signal Transformer, rated for 240 mA continuous current with a maximum DC resistance of 4.6Ohm. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. The part is surface-mounted in a nonstandard package measuring 9.25mm × 7.87mm with a seated height of 1.65mm, and is fully RoHS3 compliant with MSL 1 rating.

Substiute Parts

SC2506-221

Signal TransformerIn Stock: 943SC2506-221 Datasheet

Current PartRFQ

UP1B-221-R

Eaton - Electronics DivisionIn Stock: 1584UP1B-221-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC2506-221 is determined by strict equivalence across the following critical parameters:

• Inductance Value: 220 µH ±20% tolerance
• Current Rating: Minimum 240 mA continuous current capability
• Saturation Current: Minimum 220 mA
• DC Resistance: Maximum 4.6Ohm
• Shielding Configuration: Unshielded
• Mounting Technology: Surface mount
• Test Frequency: 100 kHz inductance measurement standard
• Compliance: RoHS and MSL compatibility

The substitute part UP1B-221-R meets these core electrical specifications while offering improved performance characteristics in current handling and reduced DC resistance, enabling direct functional replacement in applications where the SC2506-221 is no longer available.

Parameter Comparison

Engineering Selection Recommendations

The UP1B-221-R from Eaton Electronics Division is qualified as a direct substitute for the obsolete SC2506-221. Selection is based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical inductance values at 220 µH with ±20% tolerance and are tested at 100 kHz. The UP1B-221-R exceeds minimum current requirements with 360 mA rating versus the SC2506-221's 240 mA specification, and provides superior DC resistance performance at 1.96Ohm maximum compared to 4.6Ohm maximum.

Compliance Status: The UP1B-221-R carries active product status with RoHS compliance certification and MSL 1 rating, ensuring long-term availability and regulatory alignment. The SC2506-221's obsolete status necessitates transition to this alternative.

Physical Compatibility: Both components are surface-mount, unshielded inductors in nonstandard packages. The UP1B-221-R measures 8.89mm × 6.10mm × 5.00mm (height seated), representing a minor footprint variation from the SC2506-221's 9.25mm × 7.87mm × 1.65mm dimensions. PCB layout verification is required to confirm mechanical fit within the application's spatial constraints.

Frequently Asked Questions (FAQ)

Q: Can the UP1B-221-R directly replace the SC2506-221 in all applications?

A: The UP1B-221-R meets all core electrical specifications for substitution: identical inductance value, saturation current exceeding minimum requirements, and superior DC resistance performance. However, the seated height difference (5.00mm versus 1.65mm) requires verification of available PCB clearance and component stacking constraints in your specific application.

Q: What are the key differences between these two inductors?

A: The primary differences are product status (obsolete versus active), current handling capability (240 mA versus 360 mA), DC resistance (4.6Ohm versus 1.96Ohm), and physical height. The UP1B-221-R provides enhanced performance margins across electrical parameters while maintaining functional equivalence at the 220 µH inductance specification.

Q: Are there any compliance or certification concerns with substitution?

A: Both parts are RoHS compliant with MSL 1 ratings. The UP1B-221-R carries active RoHS certification, while the SC2506-221 is RoHS3 compliant. Both meet moisture sensitivity and handling requirements for unlimited shelf life under standard storage conditions.

Q: Does the packaging format affect substitution eligibility?

A: Both parts are supplied in surface-mount nonstandard packages. The UP1B-221-R is available in Tape & Reel (TR) packaging, which is standard for production environments. Verify that your assembly process accommodates this packaging format and the component's physical dimensions.

Q: What is the inductance test frequency, and does it affect performance?

A: Both inductors are specified with inductance values measured at 100 kHz. This test frequency is standard for SMD inductor characterization and does not indicate frequency-dependent performance limitations. Actual performance across your operating frequency range should be validated against the manufacturer's frequency response data.