SCRH4D14R-150 Equivalent & Substitute Parts

Part Overview

The SCRH4D14R-150 is a 15 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 710 mA continuous current with a maximum DC resistance of 460mOhm. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity.

Substiute Parts

SCRH4D14R-150

Signal TransformerIn Stock: 822SCRH4D14R-150 Datasheet

Current PartRFQ

CDRH3D18NP-150NC

Sumida America Components Inc.In Stock: 2466CDRH3D18NP-150NC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH4D14R-150 is determined by the following critical parameters:

Inductance Value: 15 µH with ±30% tolerance is the primary functional requirement. Substitute parts must match this specification exactly.

Current Rating: The substitute must support a minimum continuous current rating of 710 mA. Parts with equal or higher current ratings are acceptable.

DC Resistance: Lower DC resistance values are preferred to minimize power dissipation. The maximum allowable DCR for substitution is 460 mOhm; parts with lower resistance provide improved performance.

Saturation Current: The substitute saturation current must meet or exceed 480 mA to maintain circuit stability under transient conditions.

Shielding: Shielded construction is required to maintain electromagnetic compatibility in the original application.

Mounting and Package: Surface mount configuration with nonstandard package dimensions must be compatible with existing PCB layouts.

Environmental Compliance: RoHS3 compliance is mandatory for regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

The CDRH3D18NP-150NC from Sumida America Components Inc. is a qualified substitute for the obsolete SCRH4D14R-150. Both components meet the core electrical requirements: 15 µH inductance at ±30% tolerance, shielded construction, and surface mount configuration.

The CDRH3D18NP-150NC provides performance advantages over the original part. The current rating of 750 mA exceeds the 710 mA requirement, and the saturation current of 750 mA significantly exceeds the 480 mA specification. Most notably, the DC resistance of 302 mOhm is substantially lower than the 460 mOhm maximum of the original part, resulting in reduced power dissipation and improved thermal performance.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The substitute part is currently in active production status with established supply chain availability, eliminating obsolescence risk.

The operating temperature range of the substitute extends to 105°C, which is 20°C lower than the original part's 125°C maximum. Applications requiring operation above 105°C must evaluate this limitation against specific thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can the CDRH3D18NP-150NC be used as a direct replacement for the SCRH4D14R-150?

A: Yes. Both parts share identical inductance values (15 µH), tolerance (±30%), shielding type, and surface mount configuration. The substitute meets or exceeds all critical electrical parameters including current rating, saturation current, and DC resistance specifications.

Q: What are the physical dimension differences between these parts?

A: The SCRH4D14R-150 measures 0.161" L × 0.161" W × 0.059" H (4.10mm × 4.10mm × 1.50mm). The CDRH3D18NP-150NC measures 0.150" L × 0.150" W × 0.079" H (3.80mm × 3.80mm × 2.00mm). The substitute is slightly smaller in footprint but taller. PCB layout compatibility must be verified for height clearance.

Q: Does the lower DC resistance of the substitute part affect circuit performance?

A: Lower DC resistance (302 mOhm vs. 460 mOhm) reduces resistive losses and heat generation. This represents an improvement in efficiency and thermal performance. No negative circuit effects result from this parameter difference.

Q: Are there temperature range limitations with the substitute part?

A: The CDRH3D18NP-150NC operates from -40°C to 105°C, compared to the original part's -40°C to 125°C range. Applications requiring sustained operation above 105°C must evaluate this 20°C difference against specific thermal environment requirements.

Q: What is the packaging difference between these parts?

A: The SCRH4D14R-150 packaging format is not specified in available data. The CDRH3D18NP-150NC is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly operations.

Q: Are both parts RoHS compliant?

A: Yes. Both the SCRH4D14R-150 and CDRH3D18NP-150NC are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1) ratings, meeting current environmental and reliability standards.