SC1608C-150 Equivalent & Substitute Parts

Part Overview

The SC1608C-150 is a 15 µH shielded inductor rated for 1.7 A with a maximum DC resistance of 90 mOhm, manufactured by Signal Transformer. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates across the temperature range of -40°C to 125°C and is mounted as a surface mount device in a nonstandard package measuring 6.60mm × 4.45mm × 2.92mm (max height).

Substiute Parts

SC1608C-150

Signal TransformerIn Stock: 1034SC1608C-150 Datasheet

Current PartRFQ

CDRH6D28NP-150NC

Sumida America Components Inc.In Stock: 1872CDRH6D28NP-150NC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CDRH6D28NP-150NC qualifies as a substitute for the SC1608C-150 based on the following critical parameters:

Inductance value matches at 15 µH with identical ±30% tolerance. Both components are shielded inductors with surface mount configuration and nonstandard package geometry. The inductance test frequency is consistent at 100 kHz. Both parts maintain RoHS3 compliance and MSL 1 rating. The substitute part operates within a compatible temperature range (-40°C to 100°C), though with a reduced upper limit compared to the original. DC resistance of 84 mOhm Max on the substitute is lower than the 90 mOhm Max specification of the original part, representing an improvement in this parameter. Current rating differs at 1.4 A versus 1.7 A on the original; this represents a reduction in maximum current capacity and must be evaluated against circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The CDRH6D28NP-150NC is an active product from Sumida America Components Inc., providing procurement continuity for the obsolete SC1608C-150. Both components maintain ROHS3 compliance and identical MSL 1 ratings, supporting equivalent environmental and regulatory requirements.

Selection of the substitute requires evaluation of the reduced current rating (1.4 A versus 1.7 A). If circuit operation remains within 1.4 A maximum, the substitute is electrically compatible. The improved DC resistance (84 mOhm versus 90 mOhm) provides a performance advantage in power dissipation characteristics.

The operating temperature upper limit is reduced from 125°C to 100°C on the substitute. Applications requiring sustained operation above 100°C are not suitable for this substitute without additional thermal analysis.

Physical dimensions differ slightly: the substitute is larger in footprint (6.70mm × 6.70mm versus 6.60mm × 4.45mm) and height (3.00mm versus 2.92mm). PCB layout and mechanical clearance must be verified before implementation.

Frequently Asked Questions (FAQ)

Q: Can the CDRH6D28NP-150NC directly replace the SC1608C-150 in all applications?

A: Direct replacement is possible only when circuit current requirements do not exceed 1.4 A and operating temperature remains below 100°C. Physical dimensions must be verified for PCB compatibility.

Q: What is the significance of the current rating difference?

A: The SC1608C-150 is rated for 1.7 A maximum, while the CDRH6D28NP-150NC is rated for 1.4 A. If your circuit draws current above 1.4 A, the substitute will not meet performance specifications and alternative parts must be evaluated.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant with MSL 1 ratings. No compliance barriers exist for substitution from a regulatory standpoint.

Q: How do the physical dimensions affect substitution?

A: The substitute footprint is larger (6.70mm × 6.70mm versus 6.60mm × 4.45mm) and taller (3.00mm versus 2.92mm). PCB layout must accommodate these dimensions, and mechanical clearance with adjacent components must be confirmed.

Q: What is the impact of the DC resistance difference?

A: The substitute has lower DC resistance (84 mOhm versus 90 mOhm), resulting in reduced power dissipation and improved efficiency. This is a favorable characteristic for substitution.

Q: Is the saturation current specification critical for substitution?

A: The original part specifies 310 mA saturation current; the substitute does not provide this specification. If saturation current is a design constraint, this parameter must be obtained from the manufacturer before proceeding with substitution.