CDEP105MENP-R45PC Equivalent & Substitute Parts

Part Overview

The CDEP105MENP-R45PC is a 450 nH shielded inductor manufactured by Sumida America Components Inc., rated for 22 A continuous current with a maximum DC resistance of 1.75 mOhm. This surface mount component features a metal composite core and operates across the temperature range of -40°C to 125°C. The part is classified as obsolete, making identification of suitable equivalent components necessary for ongoing design support and procurement continuity.

Substiute Parts

CDEP105MENP-R45PC

Sumida America Components Inc.In Stock: 957CDEP105MENP-R45PC Datasheet

Current PartRFQ

VLM10555T-R45M110-3

TDK CorporationIn Stock: 944VLM10555T-R45M110-3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDEP105MENP-R45PC is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 450 nH (exact match required)
• Inductance tolerance: ±25% or tighter
• Shielding: Shielded configuration
• Mounting type: Surface Mount
• Operating temperature range: -40°C to 125°C minimum
• Inductance test frequency: 100 kHz

Secondary Compatibility Parameters:

• Current rating: Must support minimum 22 A continuous operation
• Saturation current (Isat): Must equal or exceed 35 A
• DC resistance: Must not exceed 1.75 mOhm
• Physical dimensions: Must fit within or closely match 11.00 mm × 10.00 mm × 5.50 mm envelope
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1 or equivalent

The VLM10555T-R45M110-3 qualifies as a substitute based on matching inductance, shielding, temperature range, and compliance certifications. However, differences in current rating, saturation current, and DC resistance must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The VLM10555T-R45M110-3 from TDK Corporation is an active product with ROHS3 compliance and REACH unaffected status, providing long-term availability compared to the obsolete CDEP105MENP-R45PC. Both components share identical inductance values, temperature operating ranges, and shielding configurations.

Critical Differences Requiring Circuit Evaluation:

The substitute part exhibits a reduced continuous current rating of 11 A versus the original 22 A specification. This represents a 50% reduction in current-carrying capacity. Applications requiring the full 22 A continuous current cannot use this substitute without thermal and reliability analysis.

The substitute part has a higher maximum DC resistance of 2.6 mOhm compared to 1.75 mOhm in the original part. This 49% increase in resistance will result in higher power dissipation and heat generation at equivalent current levels.

The substitute part features a ferrite core versus the metal composite core of the original part. This material difference affects frequency response characteristics and EMI performance, though both maintain shielded configurations.

Physical dimensions are comparable, with the substitute measuring 10.60 mm × 10.50 mm × 5.60 mm, fitting within the general envelope of the original 11.00 mm × 10.00 mm × 5.50 mm package.

Frequently Asked Questions (FAQ)

Q: Can the VLM10555T-R45M110-3 directly replace the CDEP105MENP-R45PC in all applications?

A: No. The substitute part has a continuous current rating of 11 A compared to the original 22 A rating. Direct substitution is only valid for applications operating at or below 11 A continuous current. Applications requiring 22 A operation require alternative solutions or circuit redesign.

Q: What is the impact of the higher DC resistance in the substitute part?

A: The VLM10555T-R45M110-3 has a maximum DC resistance of 2.6 mOhm versus 1.75 mOhm in the original part. At 11 A, this results in approximately 0.315 W of power dissipation in the substitute versus 0.211 W in the original. Thermal management and circuit performance must be re-evaluated.

Q: Are the physical dimensions compatible?

A: The substitute part measures 10.60 mm × 10.50 mm × 5.60 mm compared to the original 11.00 mm × 10.00 mm × 5.50 mm. Dimensions are similar but not identical. PCB layout and mechanical clearances should be verified before implementation.

Q: What is the difference between metal composite and ferrite core materials?

A: Metal composite cores typically offer lower core loss and better high-frequency performance, while ferrite cores provide good shielding and stable inductance across temperature ranges. Both materials are shielded in these components. Core material selection affects EMI characteristics and frequency response.

Q: Is the substitute part RoHS compliant?

A: Yes. The VLM10555T-R45M110-3 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original CDEP105MENP-R45PC is also ROHS3 compliant.

Q: What is the packaging difference?

A: The original part uses nonstandard packaging, while the substitute is supplied in Tape & Reel (TR) format. This affects procurement, handling, and assembly processes but does not impact electrical performance.

Q: Can I use the substitute in high-current applications?

A: No. The 11 A continuous current rating of the substitute is insufficient for applications designed for the original 22 A rating. Alternative components with higher current ratings must be identified for such applications.