SC1608C-151 Equivalent & Substitute Parts

Part Overview

The SC1608C-151 is a 150 µH shielded inductor manufactured by Signal Transformer, rated for 640 mA continuous current with a maximum DC resistance of 750mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is RoHS3 compliant. The part is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

SC1608C-151

Signal TransformerIn Stock: 1041SC1608C-151 Datasheet

Current PartRFQ

DR1030-151-R

Eaton - Electronics DivisionIn Stock: 1197DR1030-151-R Datasheet

MFR RecommendedRFQ

IDCS2512ER151M

Vishay DaleIn Stock: 1474IDCS2512ER151M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC1608C-151 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 150 µH (exact match required)
• Inductance tolerance: ±30% or tighter
• Shielding: Shielded construction
• Operating temperature range: -40°C to 125°C minimum
• Mounting type: Surface mount
• RoHS3 compliance

Secondary Compatibility Factors:

• Current rating: Must meet or exceed 640 mA
• DC resistance: Lower or equal to 750mOhm preferred for thermal performance
• Physical dimensions: Compatibility with existing PCB layouts
• Package format: Nonstandard packages require mechanical verification

Two active substitutes meet these criteria with varying trade-offs in current capacity and DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

DR1030-151-R (Eaton - Electronics Division): This substitute provides the closest electrical performance match with 680 mA current rating, exceeding the original 640 mA specification. DC resistance of 700mOhm is lower than the original 750mOhm maximum, resulting in improved thermal efficiency. The part is active in production with RoHS3 compliance. Physical dimensions are larger (10.50mm x 10.30mm), requiring PCB layout verification before implementation. Ferrite core construction with drum core wirewound design provides stable inductance characteristics.

IDCS2512ER151M (Vishay Dale): This substitute maintains identical physical dimensions (6.60mm x 4.45mm) to the original part, eliminating layout concerns. DC resistance of 590mOhm is the lowest among all options, providing superior thermal performance. Inductance tolerance is tighter at ±20% compared to ±30%. However, the current rating of 260 mA is significantly below the original 640 mA specification, restricting this option to applications with reduced current requirements. The part is active with RoHS3 compliance and Tape & Reel packaging.

Frequently Asked Questions (FAQ)

Q: Can DR1030-151-R be used as a direct replacement for SC1608C-151?

A: Electrically yes, with the caveat that physical dimensions differ significantly. The DR1030-151-R measures 10.50mm x 10.30mm compared to the original 6.60mm x 4.45mm. PCB layout and thermal management considerations must be evaluated before substitution.

Q: Is IDCS2512ER151M suitable for all SC1608C-151 applications?

A: No. While this part matches physical dimensions and operating temperature range, the 260 mA current rating is insufficient for circuits requiring the original 640 mA specification. Use only in applications with current demands below 260 mA.

Q: What is the significance of inductance tolerance differences?

A: The original SC1608C-151 and DR1030-151-R both specify ±30% tolerance, while IDCS2512ER151M offers ±20%. Tighter tolerance provides more predictable circuit behavior but does not affect substitution eligibility if the application tolerates ±30% variation.

Q: Are all substitutes RoHS3 compliant?

A: Yes. Both DR1030-151-R and IDCS2512ER151M are RoHS3 compliant, matching the original part's environmental certification status.

Q: How do DC resistance differences impact circuit performance?

A: Lower DC resistance reduces power dissipation and heat generation. IDCS2512ER151M (590mOhm) dissipates less heat than DR1030-151-R (700mOhm), which dissipates less than the original (750mOhm). In high-current applications, this difference becomes significant for thermal management.

Q: What packaging formats are available?

A: SC1608C-151 uses nonstandard packaging. Both substitutes are supplied in Tape & Reel (TR) format, which is standard for automated assembly processes and may require handling procedure adjustments.