CDR74NP-151MC Equivalent & Substitute Parts

Part Overview

The CDR74NP-151MC is a 150 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 420 mA continuous current with a maximum DC resistance of 860mOhm. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substitute parts must maintain the core electrical specifications: 150 µH inductance at 1 kHz test frequency, shielded construction, surface mount packaging, and compatibility with the nonstandard form factor. The selection of alternatives depends on tolerance acceptance, current rating requirements, DC resistance limits, and operating temperature range.

Substiute Parts

CDR74NP-151MC

Sumida America Components Inc.In Stock: 931CDR74NP-151MC Datasheet

Current PartRFQ

CDRH74NP-151MC-B

Sumida America Components Inc.In Stock: 6009CDRH74NP-151MC-B Datasheet

SimilarRFQ

SRR7045-151M

Bourns Inc.In Stock: 3288SRR7045-151M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDR74NP-151MC is determined by the following criteria:

Primary Electrical Requirements:

• Inductance value: 150 µH (fixed requirement)
• Inductance test frequency: 1 kHz (measurement standard)
• Shielding: Shielded construction (electromagnetic containment requirement)
• Mounting: Surface mount technology

Current and Resistance Compatibility: Substitute parts must support the application's current demands. The main part is rated for 420 mA. Substitute parts with equal or higher current ratings are acceptable. DC resistance must not exceed the application's thermal and efficiency limits; lower DCR values are preferred.

Mechanical and Environmental Compatibility:

• Package type: Nonstandard form factor (7.70mm x 7.10mm x 4.85mm maximum)
• RoHS3 compliance required
• Moisture sensitivity level: MSL 1 (unlimited shelf life)

Tolerance Considerations: The main part specifies -15%, +25% tolerance. Substitute parts with ±20% tolerance fall within acceptable deviation ranges for most applications.

Parameter Comparison

Engineering Selection Recommendations

CDRH74NP-151MC-B (Sumida America Components Inc.)

This part is the direct successor within the Sumida product line. It maintains the same inductance value and shielded construction while offering improved current rating (460 mA versus 420 mA). The DC resistance specification (880mOhm) is marginally higher than the original part (860mOhm), representing a 2.3% increase. The inductance tolerance is tightened to ±20%, improving consistency. This part is in active production status with established supply availability. Operating temperature range is specified as -40°C to 100°C. Packaging is standardized as Tape & Reel (TR), facilitating automated assembly. ROHS3 compliance and MSL 1 rating are maintained.

SRR7045-151M (Bourns Inc.)

This part offers superior electrical performance characteristics. The current rating of 800 mA provides significant headroom above the original 420 mA specification. The DC resistance is substantially lower at 480mOhm (44% reduction), resulting in improved efficiency and reduced thermal dissipation. The part features a drum core, wirewound construction with ferrite material. Self-resonant frequency matches the original at 7 MHz. Operating temperature range extends to -40°C to 125°C, providing broader environmental compatibility. The part is in active production with established supply. ROHS3 compliance and MSL 1 rating are confirmed. REACH status is listed as unaffected. Inductance tolerance is ±20%.

Selection Criteria:

• For direct form-factor and thermal compatibility with minimal design changes: CDRH74NP-151MC-B
• For applications requiring lower DC resistance, higher current capacity, or extended temperature range: SRR7045-151M

Both substitute parts are RoHS3 compliant and carry MSL 1 ratings, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can the CDRH74NP-151MC-B be used as a direct replacement for the CDR74NP-151MC?

A: The CDRH74NP-151MC-B is electrically compatible for applications requiring 420 mA or less. Both parts maintain 150 µH inductance, shielded construction, and surface mount packaging. The current rating of 460 mA exceeds the original specification. DC resistance is within 2.3% of the original. Inductance tolerance is tightened to ±20%. Physical dimensions differ slightly (7.30mm x 7.30mm x 4.50mm versus 7.70mm x 7.10mm x 4.85mm), requiring verification of PCB layout constraints.

Q: What are the advantages of the SRR7045-151M over the original CDR74NP-151MC?

A: The SRR7045-151M provides lower DC resistance (480mOhm versus 860mOhm), reducing power dissipation by approximately 44%. Current rating is significantly higher at 800 mA. Operating temperature range extends to 125°C. Self-resonant frequency is identical at 7 MHz. These characteristics make it suitable for applications with higher current demands or stricter thermal requirements.

Q: Are there packaging differences between these parts?

A: The CDR74NP-151MC is supplied in nonstandard packaging. The CDRH74NP-151MC-B is supplied in Tape & Reel (TR) format, which is standard for automated assembly. The SRR7045-151M is also supplied in Tape & Reel (TR) format. Physical dimensions vary slightly among all three parts, requiring PCB footprint verification before substitution.

Q: Do all three parts meet RoHS3 compliance?

A: Yes. The CDR74NP-151MC, CDRH74NP-151MC-B, and SRR7045-151M are all ROHS3 compliant. All three parts carry MSL 1 (unlimited moisture sensitivity level) ratings.

Q: What is the inductance tolerance specification for each part?

A: The CDR74NP-151MC specifies -15%, +25% tolerance. Both substitute parts (CDRH74NP-151MC-B and SRR7045-151M) specify ±20% tolerance, which is tighter and more symmetrical.

Q: Which part should be selected for a new design?

A: For new designs, either CDRH74NP-151MC-B or SRR7045-151M is appropriate, as both are in active production. Selection depends on current requirements, thermal constraints, and PCB layout compatibility. The SRR7045-151M is preferred for applications requiring lower DC resistance or extended temperature operation.