CDRH74-471MC Equivalent & Substitute Parts

Part Overview

The CDRH74-471MC is a 470 µH shielded surface mount inductor manufactured by Sumida America Components Inc., rated for 260 mA continuous current with a maximum DC resistance of 3.01 Ohm. This component operates across the temperature range of -40°C to 100°C and is designed for nonstandard package applications requiring ferrite core construction with electromagnetic shielding.

The CDRH74-471MC has reached obsolete product status. Locating equivalent substitute parts is necessary to support ongoing production requirements, field repairs, and design continuity for applications currently utilizing this inductor.

Substiute Parts

CDRH74-471MC

Sumida America Components Inc.In Stock: 732CDRH74-471MC Datasheet

Current PartRFQ

CDRH74NP-471MC-B

Sumida America Components Inc.In Stock: 10041CDRH74NP-471MC-B Datasheet

DirectRFQ

DR74-471-R

Eaton - Electronics DivisionIn Stock: 8248DR74-471-R Datasheet

SimilarRFQ

P1167.474NLT

Pulse ElectronicsIn Stock: 1127P1167.474NLT Datasheet

SimilarRFQ

SLF7045T-471MR22-PF

TDK CorporationIn Stock: 28238SLF7045T-471MR22-PF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDRH74-471MC are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

• Inductance value: 470 µH
• Inductance tolerance: ±20%
• Shielding: Shielded construction
• Mounting type: Surface Mount
• Core material: Ferrite
• Moisture sensitivity level: 1 (Unlimited)

Secondary Compatibility Parameters:

• Current rating: 260 mA minimum (substitutes may exceed this rating)
• DC resistance: 3.01 Ohm maximum (lower DCR values are acceptable)
• Operating temperature range: -40°C minimum to 100°C maximum (extended ranges are acceptable)
• Physical dimensions: Nonstandard package with footprint compatibility within 7.30mm ± tolerance

Substitutes are classified as direct equivalents when all primary criteria are met. Similar substitutes meet primary criteria but may vary in secondary parameters such as current saturation rating, inductance test frequency, or physical dimensions within acceptable tolerances for the application.

Parameter Comparison

Engineering Selection Recommendations

CDRH74NP-471MC-B (Direct Equivalent - Recommended Primary Substitute)

The CDRH74NP-471MC-B is the direct equivalent substitute for the obsolete CDRH74-471MC. Both parts are manufactured by Sumida America Components Inc. and share identical electrical specifications: 470 µH inductance, 260 mA current rating, and 3.01 Ohm maximum DC resistance. Physical dimensions and operating temperature range are identical. The CDRH74NP-471MC-B is currently in active product status with 9,965 units in stock. This part achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. Packaging is specified as Tape & Reel (TR), providing standard supply chain compatibility. This substitute is suitable for direct replacement in all applications previously using the CDRH74-471MC.

DR74-471-R (Similar Substitute - Extended Current Rating)

The DR74-471-R manufactured by Eaton - Electronics Division meets the core electrical requirements with 470 µH inductance and ±20% tolerance. This part provides superior performance characteristics with a 400 mA current rating (versus 260 mA) and reduced DC resistance of 1.74 Ohm (versus 3.01 Ohm maximum). The operating temperature range extends to -40°C ~ 125°C. Physical dimensions are 0.299" L x 0.299" W (7.60mm x 7.60mm), representing a 0.30mm increase in length and width compared to the original part. The inductance test frequency is 100 kHz rather than 1 kHz. This part is ROHS3 compliant and currently active with 8,174 units in stock. Selection of this substitute is appropriate for applications requiring improved thermal performance or higher current capacity, provided PCB layout accommodates the slightly larger footprint.

P1167.474NLT (Similar Substitute - Balanced Performance)

The P1167.474NLT manufactured by Pulse Electronics provides 470 µH inductance with ±20% tolerance and is rated for 290 mA continuous current. DC resistance is specified at 2.18 Ohm maximum, representing an improvement over the original 3.01 Ohm specification. Operating temperature range extends to -40°C ~ 130°C. Physical dimensions are 0.297" L x 0.297" W (7.54mm x 7.54mm), with height of 0.177" (4.50mm) matching the original part. The frequency self-resonant specification is provided at 2.6 MHz. This part is ROHS3 compliant and currently active with 1,019 units in stock. This substitute offers balanced electrical performance with minimal footprint variation.

SLF7045T-471MR22-PF (Similar Substitute - Lowest DCR)

The SLF7045T-471MR22-PF manufactured by TDK Corporation provides 470 µH inductance with ±20% tolerance and is rated for 310 mA continuous current. DC resistance is specified at 1.26 Ohm maximum, the lowest among all substitutes. Operating temperature range is -40°C ~ 105°C. Physical dimensions are 0.276" L x 0.276" W (7.00mm x 7.00mm), representing the smallest footprint, with height of 0.189" (4.80mm). This part is ROHS3 compliant but carries product status designation as "Not For New Designs," indicating TDK has discontinued this line for new applications. Inventory availability is highest at 28,200 units in stock. This substitute is suitable for existing production support where the smaller footprint and lowest DCR provide design advantages, but should not be selected for new product development.

Frequently Asked Questions (FAQ)

Q: Can the CDRH74NP-471MC-B be used as a direct replacement for the CDRH74-471MC?

A: Yes. The CDRH74NP-471MC-B is the direct equivalent substitute. Both parts share identical inductance (470 µH), current rating (260 mA), DC resistance (3.01 Ohm maximum), physical dimensions (7.30mm x 7.30mm), and operating temperature range (-40°C ~ 100°C). The primary difference is product status: CDRH74NP-471MC-B is active and ROHS3 compliant, while CDRH74-471MC is obsolete and RoHS non-compliant.

Q: What are the key differences between the direct equivalent and similar substitutes?

A: The direct equivalent (CDRH74NP-471MC-B) matches all electrical and mechanical specifications of the original part. Similar substitutes (DR74-471-R, P1167.474NLT, SLF7045T-471MR22-PF) maintain the 470 µH inductance value and ±20% tolerance but vary in current rating, DC resistance, physical dimensions, or operating temperature range. Similar substitutes are acceptable when the application requirements accommodate these parameter variations.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. The original CDRH74-471MC is RoHS non-compliant. If RoHS compliance is a requirement for your application, any of the listed substitutes satisfy this criterion.

Q: What is the significance of the inductance test frequency difference between 1 kHz and 100 kHz?

A: The inductance test frequency indicates the frequency at which the inductance value was measured. The original CDRH74-471MC was tested at 1 kHz, while most substitutes were tested at 100 kHz. Both measurement frequencies are standard industry practice. The inductance value specification (470 µH ±20%) remains valid across the operating frequency range of the application. Selection between parts should be based on application frequency requirements rather than test frequency alone.

Q: Can I use the SLF7045T-471MR22-PF for new product designs?

A: The SLF7045T-471MR22-PF carries product status designation "Not For New Designs." This indicates TDK has discontinued this part for new applications. For new product development, select either the CDRH74NP-471MC-B (direct equivalent) or the DR74-471-R or P1167.474NLT (similar substitutes with active product status).

Q: How do I determine which substitute is appropriate for my application?

A: Evaluate your application requirements against the following parameters: (1) Required inductance value and tolerance; (2) Maximum continuous current; (3) Maximum allowable DC resistance; (4) Operating temperature range; (5) Physical space constraints (PCB footprint and height); (6) Regulatory compliance requirements (RoHS status). The CDRH74NP-471MC-B is recommended as the primary choice for direct replacement. If your application requires higher current capacity or lower DC resistance, evaluate DR74-471-R, P1167.474NLT, or SLF7045T-471MR22-PF based on specific parameter needs and available PCB space.

Q: What is the difference between "Shielded" and "Unshielded" inductors, and why does this matter?

A: All parts listed in this reference are shielded inductors. Shielding reduces electromagnetic interference (EMI) radiation from the inductor and improves immunity to external electromagnetic fields. The CDRH74-471MC and all listed substitutes incorporate ferrite core shielding, making them suitable for applications requiring EMI control in compact surface mount designs.

Q: Are there any physical dimension constraints I should consider when substituting parts?

A: Yes. While all substitutes maintain similar form factors, minor dimensional variations exist. The original CDRH74-471MC is 7.30mm x 7.30mm x 4.50mm (height). The DR74-471-R is slightly larger at 7.60mm x 7.60mm x 4.35mm. The SLF7045T-471MR22-PF is smaller at 7.00mm x 7.00mm x 4.80mm. Verify that your PCB layout accommodates the selected substitute's footprint and height before implementation.

Q: What does "Current - Saturation (Isat)" mean, and why is it specified for some parts but not others?

A: Current saturation (Isat) is the current level at which the inductor's core begins to saturate, causing inductance to degrade. When specified, this parameter indicates the maximum current before performance degradation occurs. The original CDRH74-471MC does not specify Isat. Among substitutes, DR74-471-R specifies 460 mA, P1167.474NLT specifies 290 mA, and SLF7045T-471MR22-PF specifies 220 mA. For applications operating near maximum current ratings, verify that the selected substitute's saturation current exceeds your peak current requirements.