CDRH127-331MC Equivalent & Substitute Parts

Part Overview

The CDRH127-331MC is a 330 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 950 mA continuous current with a maximum DC resistance of 640 mOhm. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 100°C and is mounted in a nonstandard 12.00mm x 12.00mm package with 8.00mm maximum seated height.

Due to its obsolete status, alternative parts with identical or compatible electrical and mechanical specifications are required for new production runs and legacy system maintenance.

Substiute Parts

CDRH127-331MC

Sumida America Components Inc.In Stock: 1032CDRH127-331MC Datasheet

Current PartRFQ

CDRH127NP-331MC

Sumida America Components Inc.In Stock: 2155CDRH127NP-331MC Datasheet

DirectRFQ

DR127-331-R

Eaton - Electronics DivisionIn Stock: 1462DR127-331-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDRH127-331MC are classified based on strict electrical and mechanical compatibility criteria:

Direct Equivalent (Same Manufacturer): CDRH127NP-331MC maintains identical electrical specifications (330 µH, ±20% tolerance, 950 mA rating, 640 mOhm DCR) and mechanical dimensions. The primary distinction is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. standard packaging). This part is a direct functional replacement.

Similar Substitute (Alternative Manufacturer): DR127-331-R from Eaton - Electronics Division provides equivalent inductance (330 µH) and tolerance (±20%) with enhanced current rating (1.04 A vs. 950 mA) and lower DC resistance (574 mOhm vs. 640 mOhm). Physical dimensions are comparable (12.50 x 12.50 x 8.00 mm vs. 12.00 x 12.00 x 8.00 mm). This part operates at an extended temperature range (-40°C to 125°C) and uses ferrite drum core construction.

Substitution eligibility is determined by: matching inductance value, tolerance specification, shielding requirement, surface mount configuration, and compatible package footprint within specified dimensional tolerances.

Parameter Comparison

Engineering Selection Recommendations

CDRH127NP-331MC is the primary substitute for CDRH127-331MC. Both parts are manufactured by Sumida America Components Inc. and share identical electrical and mechanical specifications. CDRH127NP-331MC holds Active product status, ensuring long-term availability and supply chain continuity. This part achieves ROHS3 compliance, addressing regulatory requirements for new designs. The packaging format (Tape & Reel) supports automated assembly processes. Selection of this part eliminates obsolescence risk while maintaining full functional compatibility.

DR127-331-R from Eaton - Electronics Division serves as an alternative substitute when CDRH127NP-331MC availability is constrained. This part exceeds the original current rating specification (1.04 A vs. 950 mA) and provides lower DC resistance (574 mOhm vs. 640 mOhm), resulting in reduced power dissipation. The extended operating temperature range (-40°C to 125°C) accommodates more demanding thermal environments. Physical dimensions differ slightly (12.50 x 12.50 mm vs. 12.00 x 12.00 mm), requiring PCB layout verification for footprint compatibility. DR127-331-R achieves ROHS3 compliance and maintains REACH Unaffected status. The ferrite drum core construction and 100 kHz test frequency indicate different core material and design approach compared to the original part.

Both substitute parts maintain shielded construction, surface mount configuration, and compatible package heights, supporting direct circuit board integration.

Frequently Asked Questions (FAQ)

Q: Can CDRH127NP-331MC be used as a direct replacement for CDRH127-331MC?

A: Yes. CDRH127NP-331MC is a direct functional equivalent. Both parts share identical inductance (330 µH), tolerance (±20%), current rating (950 mA), DC resistance (640 mOhm Max), shielding, and mechanical dimensions. The primary differences are product status (Active vs. Obsolete) and packaging format (Tape & Reel). No circuit modifications are required.

Q: What are the key differences between CDRH127NP-331MC and DR127-331-R?

A: Both parts maintain 330 µH inductance and ±20% tolerance. DR127-331-R provides higher current rating (1.04 A vs. 950 mA), lower DC resistance (574 mOhm vs. 640 mOhm), extended temperature range (-40°C to 125°C vs. -40°C to 100°C), and ferrite drum core construction. Physical dimensions differ slightly (12.50 x 12.50 mm vs. 12.00 x 12.00 mm). Both achieve ROHS3 compliance.

Q: Are there PCB layout considerations when substituting DR127-331-R for CDRH127-331MC?

A: Yes. DR127-331-R dimensions are 12.50 x 12.50 mm compared to 12.00 x 12.00 mm for the original part. PCB footprint compatibility must be verified. Height (8.00 mm seated maximum) remains identical. Confirm that the 0.50 mm increase in length and width accommodates existing pad layouts or allows for minor routing adjustments.

Q: Which substitute part should be selected for new production designs?

A: CDRH127NP-331MC is recommended for new production. It maintains identical specifications to the original part, holds Active product status ensuring long-term supply availability, and achieves ROHS3 compliance. This selection eliminates obsolescence risk and supports regulatory compliance requirements.

Q: Can DR127-331-R be used in applications requiring the exact 950 mA current rating?

A: Yes. DR127-331-R is rated for 1.04 A continuous current, which exceeds the 950 mA requirement. The part operates within specification at 950 mA. The higher current rating provides design margin and reduced thermal stress. DC resistance is lower (574 mOhm vs. 640 mOhm), resulting in lower power dissipation at the same current level.

Q: What is the impact of different inductance test frequencies (1 kHz vs. 100 kHz)?

A: CDRH127-331MC and CDRH127NP-331MC are tested at 1 kHz, while DR127-331-R is tested at 100 kHz. Both parts maintain the same 330 µH inductance specification. The test frequency difference reflects different measurement methodologies but does not affect circuit performance at typical operating frequencies. Inductance values remain equivalent across the specified tolerance band.

Q: Are moisture sensitivity levels identical across all three parts?

A: Yes. CDRH127-331MC, CDRH127NP-331MC, and DR127-331-R all carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply to all three parts.

Q: What compliance certifications differ between the substitute parts?

A: CDRH127-331MC is RoHS non-compliant. CDRH127NP-331MC and DR127-331-R both achieve ROHS3 compliance. All three parts carry ECCN EAR99 and HTSUS 8504.50.4000 classifications. REACH status: CDRH127-331MC and DR127-331-R are REACH Unaffected; CDRH127NP-331MC is Vendor Undefined. For new designs subject to RoHS requirements, CDRH127NP-331MC or DR127-331-R must be selected.