SCRH74B-150 Equivalent & Substitute Parts

Part Overview

The SCRH74B-150 is a 15 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 1.47 A continuous current with a maximum DC resistance of 81 mOhm. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit applications while maintaining performance within specified tolerances.

Substiute Parts

SCRH74B-150

Signal TransformerIn Stock: 1139SCRH74B-150 Datasheet

Current PartRFQ

SRR0745A-150M

Bourns Inc.In Stock: 7914SRR0745A-150M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH74B-150 is determined by the following critical parameters:

• Inductance value must match at 15 µH with ±20% tolerance
• Shielding type must be Shielded
• Mounting type must be Surface Mount
• Operating temperature range must encompass -40°C ~ 125°C
• Current rating must meet or exceed 1.47 A
• DC resistance must not exceed 81 mOhm to maintain equivalent power dissipation characteristics
• RoHS3 compliance required for regulatory alignment

The SRR0745A-150M from Bourns Inc. meets all substitution criteria with improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SRR0745A-150M qualifies as a direct substitute for the SCRH74B-150 based on electrical and mechanical equivalence. Both components maintain identical inductance values, tolerance specifications, and operating temperature ranges. The substitute part demonstrates superior performance with increased current rating (1.9 A versus 1.47 A) and lower DC resistance (75 mOhm versus 81 mOhm), resulting in reduced power dissipation. Both parts maintain Active product status and ROHS3 compliance. The SRR0745A-150M carries AEC-Q200 qualification, indicating automotive-grade reliability standards. Physical dimensions are comparable with minimal height variation (4.70 mm versus 4.50 mm seated height), maintaining compatibility with standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the SRR0745A-150M replace the SCRH74B-150 in existing designs?

A: Yes. Both components share identical inductance (15 µH), tolerance (±20%), shielding type, operating temperature range (-40°C ~ 125°C), and mounting configuration. The substitute part exceeds minimum current and saturation specifications while maintaining lower DC resistance.

Q: What are the physical compatibility considerations?

A: Both parts use Nonstandard package types with comparable footprints. The SRR0745A-150M seated height is 4.70 mm compared to 4.50 mm for the SCRH74B-150. This 0.20 mm difference does not impact standard PCB assembly or clearance requirements.

Q: Are there compliance differences between these parts?

A: Both components are ROHS3 compliant with MSL rating of 1 (Unlimited). The SRR0745A-150M includes AEC-Q200 qualification, which is an additional automotive reliability standard not specified for the SCRH74B-150.

Q: How do the electrical performance characteristics compare?

A: The SRR0745A-150M provides improved performance with 1.9 A current rating versus 1.47 A, and 75 mOhm maximum DCR versus 81 mOhm. These improvements reduce thermal stress and power dissipation in the circuit while maintaining identical inductance characteristics.

Q: What packaging formats are available for both parts?

A: Both the SCRH74B-150 and SRR0745A-150M are supplied in Tape & Reel (TR) format suitable for automated assembly processes.