SC2506-101 Equivalent & Substitute Parts

Part Overview

The SC2506-101 is a 100 µH fixed unshielded inductor manufactured by Signal Transformer, rated for 400 mA continuous current with a maximum DC resistance of 2Ohm. This surface mount component is designed for nonstandard applications requiring compact form factor and moderate current handling.

The SC2506-101 is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, field repairs, and design continuity where this component was originally specified.

Substiute Parts

SC2506-101

Signal TransformerIn Stock: 1103SC2506-101 Datasheet

Current PartRFQ

MP2A-101-R

Eaton - Electronics DivisionIn Stock: 1218MP2A-101-R Datasheet

MFR RecommendedRFQ

UP1B-101-R

Eaton - Electronics DivisionIn Stock: 2579UP1B-101-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC2506-101 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Inductance value: 100 µH ±20%
• Inductance tolerance: ±20%
• Shielding type: Unshielded
• Mounting type: Surface Mount
• Test frequency: 100 kHz
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Criteria:

• Current rating: Substitute must equal or exceed 400 mA
• Saturation current (Isat): Substitute must equal or exceed 300 mA
• DC resistance (DCR): Substitute must not exceed 2Ohm Max
• Physical dimensions: Substitute must fit within or be compatible with the original mounting footprint
• Product status: Active status preferred for long-term availability
• RoHS compliance: Substitute must maintain equivalent or superior compliance level

Both identified substitutes—MP2A-101-R and UP1B-101-R—meet these criteria and are classified as active products from Eaton - Electronics Division.

Parameter Comparison

Engineering Selection Recommendations

MP2A-101-R (Eaton MICRO-PAC PLUS™ Series)

This substitute is suitable for applications where the original SC2506-101 specifications can accommodate a slightly reduced current rating (390 mA versus 400 mA). The MP2A-101-R features a Molybdenum Permalloy core with superior saturation current performance (450 mA) and maintains DC resistance within acceptable limits (2.015Ohm). The component is active and RoHS compliant. Physical dimensions are smaller than the original, which may provide layout advantages. This option is recommended for space-constrained designs.

UP1B-101-R (Eaton UNI-PAC™ Series)

This substitute exceeds the original current rating specification (470 mA versus 400 mA) and provides superior DC resistance performance (1.11Ohm Max versus 2Ohm Max). The ferrite core construction delivers higher saturation current (530 mA). The UP1B-101-R is active and RoHS compliant. Physical dimensions are comparable to the original in length and width, though height is significantly greater (5.00mm versus 1.65mm). This option is recommended for applications requiring lower DC resistance and higher current margin.

Both substitutes are active products with established supply chains, supporting long-term component availability and production continuity.

Frequently Asked Questions (FAQ)

Q: Can the MP2A-101-R be used if my circuit requires exactly 400 mA continuous current?

A: The MP2A-101-R is rated for 390 mA continuous current, which is 10 mA below the original specification. Circuit margin analysis is required. If the application operates at or near 400 mA, the UP1B-101-R (470 mA rating) is the more conservative choice.

Q: What is the significance of the different core materials (MPP versus Ferrite)?

A: Core material affects inductor performance characteristics including saturation behavior, frequency response, and temperature stability. The MP2A-101-R uses Molybdenum Permalloy (MPP) core, while the UP1B-101-R uses ferrite. Both are unshielded and tested at 100 kHz, matching the original specification. Core material selection depends on specific circuit requirements and operating conditions not specified in this reference.

Q: Are there physical footprint compatibility concerns?

A: The MP2A-101-R is smaller (7.50mm x 5.20mm) than the original (9.25mm x 7.87mm), offering potential layout benefits. The UP1B-101-R is similar in footprint (8.89mm x 6.10mm) but significantly taller (5.00mm versus 1.65mm). PCB layout verification is necessary to confirm mechanical fit.

Q: Why is the UP1B-101-R's DC resistance lower than the original?

A: Lower DC resistance (1.11Ohm versus 2Ohm) reduces resistive losses and heat generation in the inductor. This is a performance advantage for power-sensitive applications. The lower resistance does not affect substitution eligibility, as it meets the "not exceed 2Ohm Max" criterion.

Q: Are both substitutes available in the same packaging format?

A: Both MP2A-101-R and UP1B-101-R are supplied in Tape & Reel (TR) packaging, suitable for automated assembly. The original SC2506-101 packaging format was not specified in available documentation.

Q: What compliance certifications apply to these substitutes?

A: Both MP2A-101-R and UP1B-101-R are RoHS compliant and classified as EAR99 for export control purposes. Both carry Moisture Sensitivity Level 1 (Unlimited), matching the original specification. Operating temperature range is specified as -40°C ~ 85°C for both substitutes.