CDRH74-271MC Equivalent & Substitute Parts

Part Overview

The CDRH74-271MC is a 270 µH shielded inductor manufactured by Sumida America Components Inc., rated for 340 mA with a maximum DC resistance of 1.64 Ohm. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design support and procurement continuity. The part is surface-mounted in a nonstandard 7.30mm x 7.30mm package with a seated height of 4.50mm, designed for applications requiring ferrite-core inductance in compact form factors.

Substiute Parts

CDRH74-271MC

Sumida America Components Inc.In Stock: 930CDRH74-271MC Datasheet

Current PartRFQ

CDRH74NP-271MC-B

Sumida America Components Inc.In Stock: 1055CDRH74NP-271MC-B Datasheet

DirectRFQ

P1167.274NLT

Pulse ElectronicsIn Stock: 856P1167.274NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDRH74-271MC are identified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Critical Parameters (Must Match):

• Inductance: 270 µH
• Inductance Tolerance: ±20%
• Shielding: Shielded
• Mounting Type: Surface Mount
• Package footprint compatibility: 7.30mm x 7.30mm nominal dimensions

Allowable Variation Parameters:

• Current Rating: Substitute must equal or exceed 340 mA
• DC Resistance: Substitute must not exceed 1.64 Ohm maximum
• Operating Temperature: Substitute range must encompass or exceed -30°C to 100°C
• Core Material: Ferrite or equivalent shielded construction

Two substitute parts meet these criteria:

1. CDRH74NP-271MC-B (Sumida America Components Inc.) — Direct manufacturer equivalent with identical electrical specifications and active product status
2. P1167.274NLT (Pulse Electronics) — Similar inductance value with enhanced current rating and lower DC resistance, representing a performance-equivalent alternative

Parameter Comparison

Engineering Selection Recommendations

CDRH74NP-271MC-B is the primary substitute for CDRH74-271MC. This part maintains identical electrical specifications (270 µH, 340 mA, 1.64 Ohm DCR) and mechanical dimensions while offering active product status and ROHS3 compliance. The extended operating temperature range (-40°C to 100°C versus -30°C to 100°C) provides additional thermal margin. This substitute is recommended for direct replacement in existing designs without circuit modification.

P1167.274NLT serves as a performance-equivalent alternative when enhanced specifications are acceptable. This Pulse Electronics part delivers superior electrical characteristics: 390 mA current rating (50 mA higher), 1.04 Ohm maximum DCR (37% lower), and extended operating temperature to 130°C. The package footprint is marginally larger (7.54mm x 7.54mm versus 7.30mm x 7.30mm), requiring PCB layout verification. This substitute is suitable for applications where improved thermal performance or lower losses are beneficial and board space permits the dimensional increase.

Both substitutes are ROHS3 compliant and available in Tape & Reel packaging, supporting modern manufacturing workflows. The obsolete status of CDRH74-271MC necessitates transition to one of these active alternatives for new procurement.

Frequently Asked Questions (FAQ)

Q: Can CDRH74NP-271MC-B be used as a direct drop-in replacement for CDRH74-271MC?

A: Yes. CDRH74NP-271MC-B maintains identical inductance (270 µH), current rating (340 mA), DC resistance (1.64 Ohm max), and package dimensions (7.30 x 7.30 x 4.50 mm). No circuit design changes are required. The primary difference is product status (active versus obsolete) and RoHS compliance.

Q: What are the key differences between CDRH74NP-271MC-B and P1167.274NLT?

A: Both parts share the same 270 µH inductance and ±20% tolerance. P1167.274NLT offers higher current rating (390 mA versus 340 mA), lower DC resistance (1.04 Ohm versus 1.64 Ohm), and wider operating temperature range (-40°C to 130°C versus -40°C to 100°C). The package footprint is slightly larger (7.54 x 7.54 mm versus 7.30 x 7.30 mm). Both are shielded surface-mount inductors suitable for compact applications.

Q: Is the package size difference between CDRH74NP-271MC-B and P1167.274NLT significant?

A: The difference is 0.24 mm in length and width (7.54 mm versus 7.30 mm). This represents a 3.3% increase in footprint area. For designs with tight PCB layout constraints, this may require layout verification. Height remains identical at 4.50 mm.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both CDRH74NP-271MC-B and P1167.274NLT are ROHS3 compliant. The original CDRH74-271MC is RoHS non-compliant, making substitution necessary for applications requiring RoHS certification.

Q: What is the inductance test frequency difference, and does it affect substitution?

A: CDRH74-271MC and CDRH74NP-271MC-B are tested at 1 kHz, while P1167.274NLT is tested at 100 kHz. Both parts maintain ±20% tolerance at their respective test frequencies. The higher test frequency for P1167.274NLT reflects its wirewound construction and extended frequency response (self-resonant frequency 3.8 MHz). For applications operating below 1 MHz, this difference is not functionally significant.

Q: Can P1167.274NLT be used in applications originally designed for CDRH74-271MC?

A: P1167.274NLT is compatible with applications designed for CDRH74-271MC provided that: (1) the PCB layout accommodates the 7.54 x 7.54 mm footprint, (2) the circuit can tolerate the lower DC resistance (1.04 Ohm versus 1.64 Ohm), and (3) the higher current rating (390 mA versus 340 mA) does not introduce unintended circuit behavior. The superior electrical characteristics generally provide performance benefits.

Q: What packaging formats are available for these substitutes?

A: CDRH74NP-271MC-B and P1167.274NLT are both supplied in Tape & Reel (TR) packaging, supporting automated assembly processes. The original CDRH74-271MC was supplied in bulk packaging. Tape & Reel format is standard for modern surface-mount manufacturing.