SCMS5D25-220 Equivalent & Substitute Parts

Part Overview

The SCMS5D25-220 is a 22 µH shielded inductor manufactured by Signal Transformer, designed for surface mount applications requiring fixed inductance in compact form factors. 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 the application.

Substiute Parts

SCMS5D25-220

Signal TransformerIn Stock: 814SCMS5D25-220 Datasheet

Current PartRFQ

VLCF5024T-220MR59-2

TDK CorporationIn Stock: 3403VLCF5024T-220MR59-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCMS5D25-220 are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 22 µH (within ±20% tolerance)
• Inductance tolerance: ±20%
• Shielding: Shielded construction
• Mounting type: Surface Mount
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1 (Unlimited)

Secondary Compatibility Parameters:

• DC Resistance (DCR): Must not exceed 190 mOhm
• Operating temperature range: Must support -40°C minimum
• Current saturation (Isat): Must support minimum 590 mA operation
• Package classification: Nonstandard surface mount form factor

The VLCF5024T-220MR59-2 from TDK Corporation meets these substitution criteria with equivalent inductance, shielding, and compliance specifications.

Parameter Comparison

Engineering Selection Recommendations

The VLCF5024T-220MR59-2 qualifies as a substitute for the SCMS5D25-220 based on matching inductance value, tolerance, shielding, and compliance certifications. Both components are ROHS3 compliant and carry MSL 1 moisture sensitivity ratings.

Selection between these parts depends on application current requirements. The SCMS5D25-220 supports higher current ratings (1.29 A) and saturation current (770 mA) compared to the VLCF5024T-220MR59-2 (590 mA). Applications operating at currents below 590 mA can use either part. Applications requiring currents between 590 mA and 1.29 A must use the SCMS5D25-220.

The VLCF5024T-220MR59-2 offers a lower operating temperature maximum (105°C versus 125°C). Applications requiring sustained operation above 105°C must use the SCMS5D25-220.

Physical dimensions differ slightly, with the TDK substitute providing a more compact footprint (5.00mm x 5.00mm, 2.40mm height) compared to the Signal Transformer part (5.20mm x 5.20mm, 2.80mm height). PCB layout constraints may favor the smaller substitute in space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can the VLCF5024T-220MR59-2 replace the SCMS5D25-220 in all applications?

A: The VLCF5024T-220MR59-2 is suitable for applications where circuit current does not exceed 590 mA and operating temperature does not exceed 105°C. Applications exceeding these limits require the SCMS5D25-220.

Q: What is the significance of the ±20% inductance tolerance?

A: Both parts share ±20% inductance tolerance, meaning the actual inductance value can vary from 17.6 µH to 26.4 µH. This tolerance applies equally to both the main part and substitute, ensuring equivalent circuit behavior within specified limits.

Q: Are there physical mounting differences between these parts?

A: Both parts are surface mount components with nonstandard package classifications. The VLCF5024T-220MR59-2 is slightly smaller (5.00mm x 5.00mm versus 5.20mm x 5.20mm) and lower profile (2.40mm versus 2.80mm). Standard SMD pick-and-place equipment can handle both form factors.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SCMS5D25-220 and VLCF5024T-220MR59-2 are ROHS3 compliant, REACH unaffected, and carry MSL 1 moisture sensitivity ratings. Both are classified under ECCN EAR99.

Q: What is the difference in DC resistance between these inductors?

A: The SCMS5D25-220 has a maximum DCR of 190 mOhm, while the VLCF5024T-220MR59-2 has a maximum DCR of 188 mOhm. This 2 mOhm difference is negligible for most circuit applications and both parts meet equivalent resistance specifications.