CDRH74-391MC Equivalent & Substitute Parts

Part Overview

The CDRH74-391MC is a 390 µH shielded inductor manufactured by Sumida America Components Inc., rated for 290 mA with a maximum DC resistance of 2.85Ohm. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 100°C and is mounted as a surface mount device in a nonstandard 7.30mm x 7.30mm package.

Substiute Parts

CDRH74-391MC

Sumida America Components Inc.In Stock: 1143CDRH74-391MC Datasheet

Current PartRFQ

CDRH74NP-391MC-B

Sumida America Components Inc.In Stock: 879CDRH74NP-391MC-B Datasheet

DirectRFQ

P1167.394NLT

Pulse ElectronicsIn Stock: 957P1167.394NLT Datasheet

SimilarRFQ

SRR0735A-391M

Bourns Inc.In Stock: 3685SRR0735A-391M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDRH74-391MC is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 390 µH (±20% tolerance)
• Current rating: minimum 290 mA
• DC resistance: 2.85Ohm or lower
• Shielding: Shielded configuration required
• Mounting: Surface mount only
• Package footprint: 7.30mm x 7.30mm base dimensions
• Operating temperature: minimum -40°C to 100°C range

Substitute Classification:

Direct Equivalent: CDRH74NP-391MC-B matches all electrical specifications and physical dimensions identically. This part is the active production variant of the obsolete CDRH74-391MC, differing only in packaging format and RoHS compliance status.

Similar Substitutes: P1167.394NLT and SRR0735A-391M meet the core electrical requirements (390 µH inductance, shielded configuration, surface mount) with acceptable variations in current rating, DC resistance, and physical dimensions within the constraints of the nonstandard package category. These parts accommodate the functional requirements while offering improved performance characteristics or compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

CDRH74NP-391MC-B is the primary substitute for the obsolete CDRH74-391MC. This part is manufactured by the same supplier and maintains identical electrical and mechanical specifications. The transition from the obsolete variant to this active production part provides ROHS3 compliance and ensures long-term availability. Selection of CDRH74NP-391MC-B eliminates obsolescence risk while preserving all functional characteristics of the original design.

P1167.394NLT (Pulse Electronics) and SRR0735A-391M (Bourns Inc.) are qualified as similar substitutes for applications where the primary substitute is unavailable. Both parts maintain the 390 µH inductance specification and shielded configuration. P1167.394NLT offers improved DC resistance (1.57Ohm) and extended temperature range (-40°C to 130°C), suitable for designs requiring lower losses or higher thermal margins. SRR0735A-391M provides AEC-Q200 certification and reduced height (3.70mm), beneficial for automotive applications or space-constrained layouts. Both alternatives are ROHS3 compliant and actively produced.

Selection among similar substitutes depends on specific application requirements: thermal performance, space constraints, and industry certifications. All three substitute parts accommodate the 290 mA current requirement of the original design.

Frequently Asked Questions (FAQ)

Q: Can CDRH74NP-391MC-B be used as a direct replacement for CDRH74-391MC?

A: Yes. CDRH74NP-391MC-B is the active production equivalent of the obsolete CDRH74-391MC. Both parts share identical inductance (390 µH), current rating (290 mA), DC resistance (2.85Ohm Max), package dimensions (7.30mm x 7.30mm), and operating temperature range (-40°C to 100°C). The primary difference is product status and RoHS compliance. CDRH74NP-391MC-B is ROHS3 compliant and actively manufactured.

Q: What are the key differences between the similar substitutes?

A: P1167.394NLT differs in DC resistance (1.57Ohm vs. 2.85Ohm), current rating (320 mA vs. 290 mA), package dimensions (7.54mm x 7.54mm vs. 7.30mm x 7.30mm), and test frequency (100 kHz vs. 1 kHz). SRR0735A-391M differs in DC resistance (2.3Ohm vs. 2.85Ohm), current rating (300 mA vs. 290 mA), height (3.70mm vs. 4.50mm), and includes AEC-Q200 certification. All three maintain 390 µH inductance and shielded configuration.

Q: Are there packaging format differences between substitutes?

A: Yes. CDRH74-391MC packaging is listed as nonstandard with unspecified supplier device package. CDRH74NP-391MC-B is supplied in Tape & Reel (TR) format. P1167.394NLT packaging is unspecified. SRR0735A-391M is supplied in Cut Tape (CT) & Digi-Reel® format. Verify packaging compatibility with assembly equipment and procurement requirements before selection.

Q: Can P1167.394NLT be used if space is not a constraint?

A: P1167.394NLT is electrically compatible with the original design, meeting the 390 µH inductance and 290 mA current requirements. The 7.54mm x 7.54mm footprint represents a 0.24mm increase in length and width compared to the 7.30mm x 7.30mm original. Height remains at 4.50mm. Selection depends on PCB layout tolerance and available space. The lower DC resistance (1.57Ohm) provides improved efficiency in current-carrying applications.

Q: Which substitute is recommended for automotive applications?

A: SRR0735A-391M includes AEC-Q200 certification, qualifying it for automotive use. This part is manufactured by Bourns Inc. and maintains the 390 µH inductance specification with acceptable DC resistance (2.3Ohm Max) and current rating (300 mA). The reduced height (3.70mm) provides additional design flexibility for space-constrained automotive modules.

Q: What is the impact of different test frequencies on substitution?

A: The original CDRH74-391MC and CDRH74NP-391MC-B are tested at 1 kHz. P1167.394NLT is tested at 100 kHz, and SRR0735A-391M at 1 kHz. Test frequency differences reflect measurement methodology and do not affect functional compatibility. The 390 µH inductance specification remains valid across the operating frequency range of typical applications. Frequency-dependent performance should be evaluated in circuit simulation if the application operates significantly above 1 kHz.

Q: Are all substitutes RoHS compliant?

A: CDRH74-391MC is RoHS non-compliant. CDRH74NP-391MC-B, P1167.394NLT, and SRR0735A-391M are all ROHS3 compliant. Selection of any active substitute improves regulatory compliance for new designs or redesigns subject to RoHS requirements.