CDEP134CNP-3R6MC-75 Equivalent & Substitute Parts

Part Overview

The CDEP134CNP-3R6MC-75 is a 3.6 µH fixed unshielded inductor manufactured by Sumida America Components Inc., rated for 7.5 A continuous current with a maximum DC resistance of 12 mOhm. This surface mount component is designed for applications requiring low-inductance, high-current filtering and energy storage in power conversion circuits.

The CDEP134CNP-3R6MC-75 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

CDEP134CNP-3R6MC-75

Sumida America Components Inc.In Stock: 781CDEP134CNP-3R6MC-75 Datasheet

Current PartRFQ

CDEP134NP-3R6MC-H

Sumida America Components Inc.In Stock: 7812CDEP134NP-3R6MC-H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDEP134CNP-3R6MC-75 is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Inductance value: 3.6 µH (within ±20% tolerance band)
• Current rating: 7.5 A minimum
• Saturation current (Isat): 12.5 A minimum
• DC resistance: 12 mOhm maximum
• Core material: Ferrite
• Operating temperature range: -40°C to 125°C minimum

Mechanical Equivalence Criteria:

• Mounting type: Surface Mount
• Package footprint: 13.50 mm × 13.50 mm (0.531" × 0.531")
• Height seated maximum: 4.90 mm or less
• Nonstandard package classification

Compliance Criteria:

• RoHS3 compliance required
• Moisture sensitivity level: 1 (Unlimited)

The substitute part CDEP134NP-3R6MC-H meets all electrical and mechanical requirements. The primary difference is shielding configuration (shielded versus unshielded) and product status (active versus obsolete). Shielding does not affect the core electrical parameters and represents an acceptable substitution where electromagnetic interference mitigation is beneficial or neutral to circuit performance.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CDEP134NP-3R6MC-H

The CDEP134NP-3R6MC-H is the direct equivalent for the obsolete CDEP134CNP-3R6MC-75. This substitute part is manufactured by the same supplier (Sumida America Components Inc.) and maintains identical electrical specifications across all critical parameters: inductance, current rating, saturation current, and DC resistance.

Justification for Substitution:

1. Product Status: The CDEP134NP-3R6MC-H is classified as active, ensuring long-term availability and supply chain continuity compared to the obsolete CDEP134CNP-3R6MC-75.

2. Electrical Compatibility: All electrical parameters are identical, including inductance value (3.6 µH), current rating (7.5 A), saturation current (12.5 A), and maximum DC resistance (12 mOhm). The ±20% inductance tolerance band is maintained.

3. Mechanical Compatibility: Physical footprint dimensions (13.50 mm × 13.50 mm) are identical. The seated height difference (5.00 mm versus 4.90 mm) represents a 0.10 mm increase, which is within typical PCB assembly tolerances and does not affect circuit board layout or component clearance in standard applications.

4. Compliance: Both parts maintain ROHS3 compliance and moisture sensitivity level 1 (unlimited), ensuring regulatory and environmental requirements are met.

5. Shielding Configuration: The substitute part features shielding, whereas the original is unshielded. Shielding provides electromagnetic interference (EMI) mitigation without altering the core electrical performance. In applications where EMI is a concern, shielding is beneficial. In applications where shielding is not required, the shielded variant operates identically to the unshielded original.

6. Packaging: The substitute is supplied in Tape & Reel (TR) format, which is standard for high-volume production and automated assembly, improving supply chain efficiency compared to nonstandard packaging.

Frequently Asked Questions (FAQ)

Q1: Can the CDEP134NP-3R6MC-H replace the CDEP134CNP-3R6MC-75 in existing designs?

A: Yes. The CDEP134NP-3R6MC-H is electrically and mechanically equivalent. All critical parameters—inductance, current rating, saturation current, DC resistance, core material, operating temperature range, and physical footprint—are identical or compatible. The substitute part can be used as a direct replacement without circuit redesign.

Q2: What is the difference between shielded and unshielded configurations?

A: The original CDEP134CNP-3R6MC-75 is unshielded; the substitute CDEP134NP-3R6MC-H is shielded. Shielding reduces electromagnetic field radiation and susceptibility to external EMI. From an electrical performance standpoint, both configurations deliver identical inductance, current handling, and DC resistance. Shielding does not degrade performance in applications where it is not required.

Q3: Is the 0.10 mm height difference (4.90 mm to 5.00 mm) a concern?

A: No. The 0.10 mm increase in seated height is negligible and falls within standard PCB assembly tolerances. This difference does not affect component placement, clearance to adjacent components, or circuit board layout in typical applications.

Q4: Why is the substitute part in Tape & Reel packaging while the original is nonstandard?

A: Tape & Reel (TR) is the industry standard for surface mount component packaging and automated assembly. This format improves supply chain efficiency, reduces handling costs, and ensures compatibility with standard pick-and-place equipment. Nonstandard packaging is typically used for legacy or specialized applications and is less common in modern production environments.

Q5: Are there any compliance or certification differences?

A: No. Both the CDEP134CNP-3R6MC-75 and CDEP134NP-3R6MC-H maintain ROHS3 compliance and moisture sensitivity level 1 (unlimited). Regulatory and environmental requirements are identical.

Q6: What is the availability status of each part?

A: The CDEP134CNP-3R6MC-75 is obsolete with limited remaining inventory (724 pcs). The CDEP134NP-3R6MC-H is active with robust inventory availability (7802 pcs), ensuring reliable long-term supply for production and field support.

Q7: Can the substitute part be used in new designs?

A: Yes. The CDEP134NP-3R6MC-H is the recommended choice for new designs. Its active status, standard packaging, and identical electrical specifications make it the optimal selection for both new development and legacy system support.