CLF12555T-100M Equivalent & Substitute Parts

Part Overview

The CLF12555T-100M is a 10 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 3.9 A continuous current with a maximum DC resistance of 25.2 mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across a temperature range of -40°C to 105°C and is suitable for surface mount applications in nonstandard package configurations.

Substiute Parts

CLF12555T-100M

TDK CorporationIn Stock: 976CLF12555T-100M Datasheet

Current PartRFQ

VLS6045EX-100M

TDK CorporationIn Stock: 261863VLS6045EX-100M Datasheet

MFR RecommendedRFQ

B82477P2103M000

EPCOS - TDK ElectronicsIn Stock: 1427B82477P2103M000 Datasheet

MFR RecommendedRFQ

PA4304.103NLT

Pulse ElectronicsIn Stock: 3709PA4304.103NLT Datasheet

MFR RecommendedRFQ

UP2B-100-R

Eaton - Electronics DivisionIn Stock: 3248UP2B-100-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CLF12555T-100M are selected based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 10 µH (exact match required)
• Inductance tolerance: ±20% (exact match required)
• Core material: Ferrite (exact match required)
• Mounting type: Surface Mount (exact match required)
• Shielding configuration: Shielded or unshielded (application-dependent)

Secondary Compatibility Parameters:

• Current rating: Minimum 3.9 A (equal or greater acceptable)
• DC resistance: Maximum 25.2 mOhm (equal or lower acceptable)
• Operating temperature range: Minimum -40°C to 105°C coverage
• Saturation current: Minimum 6.7 A (equal or greater acceptable)

The substitute parts listed maintain the core electrical specifications while offering variations in physical dimensions, current ratings, and thermal performance characteristics. Selection depends on specific application requirements regarding thermal management, board space constraints, and current handling capacity.

Parameter Comparison

Engineering Selection Recommendations

VLS6045EX-100M (TDK Corporation): Active product status with ROHS3 compliance. Suitable for applications where reduced physical footprint is prioritized (6.00mm x 6.00mm). Current rating of 3.4 A is below the original specification; use only when application current demand does not exceed 3.4 A. Higher DC resistance (47 mOhm) results in increased power dissipation compared to the original part.

B82477P2103M000 (EPCOS - TDK Electronics): Active product with AEC-Q200 automotive qualification and ROHS3 compliance. Offers superior current rating (4.3 A) and extended operating temperature range (-55°C to 150°C). DC resistance matches original specification at 25 mOhm Max. Recommended for applications requiring automotive-grade reliability or extended thermal performance.

PA4304.103NLT (Pulse Electronics): Active product with ROHS3 compliance. Current rating of 4 A and DC resistance of 25 mOhm Max align closely with original specifications. Operating temperature range extends to 125°C. Suitable for general-purpose applications requiring active product availability.

UP2B-100-R (Eaton - Electronics Division): Active product with ROHS3 compliance. Unshielded configuration differs from the original shielded design; use only in applications where EMI shielding is not required. Current rating of 4.3 A and DC resistance of 26.7 mOhm Max are acceptable. Operating temperature range limited to -40°C to 85°C; verify compatibility with application thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can VLS6045EX-100M replace CLF12555T-100M in all applications?

A: No. The VLS6045EX-100M has a current rating of 3.4 A, which is lower than the original 3.9 A specification. Use this substitute only when application current requirements do not exceed 3.4 A. Additionally, the higher DC resistance (47 mOhm vs. 25.2 mOhm) will result in increased power dissipation.

Q: What is the primary difference between shielded and unshielded substitutes?

A: The UP2B-100-R is unshielded, while the original CLF12555T-100M and other substitutes are shielded. Shielding reduces electromagnetic interference (EMI) emissions and susceptibility. Use the unshielded UP2B-100-R only in applications where EMI shielding is not a design requirement.

Q: Which substitute offers the best thermal performance?

A: The B82477P2103M000 provides the widest operating temperature range (-55°C to 150°C) and includes AEC-Q200 automotive qualification, making it suitable for high-temperature applications or automotive environments.

Q: Are all substitutes available in the same package configuration?

A: No. The original CLF12555T-100M uses a nonstandard package with dimensions 12.50mm x 12.10mm. Substitute parts have varying physical dimensions: VLS6045EX-100M (6.00mm x 6.00mm), B82477P2103M000 (12.50mm x 12.50mm), PA4304.103NLT (12.50mm x 12.50mm), and UP2B-100-R (13.97mm x 10.41mm). Verify PCB layout compatibility before selection.

Q: What packaging formats are available for these substitutes?

A: The original part is supplied in Cut Tape (CT) and Digi-Reel® formats. Substitute parts are available in Cut Tape (CT) and Digi-Reel® (VLS6045EX-100M) or Tape & Reel (TR) formats (B82477P2103M000, PA4304.103NLT, UP2B-100-R). Confirm packaging availability with your supplier for production requirements.

Q: Can I use UP2B-100-R as a direct replacement without circuit modifications?

A: The UP2B-100-R is electrically compatible regarding inductance, tolerance, and current rating. However, the unshielded design may introduce EMI considerations not present with the original shielded part. Conduct EMI testing if the application operates in electromagnetically sensitive environments.