SC1608C-330 Equivalent & Substitute Parts

Part Overview

The SC1608C-330 is a 33 µH shielded inductor manufactured by Signal Transformer, rated for 1.15 A with a maximum DC resistance of 190mOhm. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part is surface-mounted in a nonstandard 6.60mm × 4.45mm package with operating temperature range of -40°C to 125°C and full RoHS3 compliance.

Substiute Parts

SC1608C-330

Signal TransformerIn Stock: 761SC1608C-330 Datasheet

Current PartRFQ

SC1608F-330

Signal TransformerIn Stock: 804SC1608F-330 Datasheet

MFR RecommendedRFQ

SD6030-330-R

Eaton - Electronics DivisionIn Stock: 839SD6030-330-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC1608C-330 is determined by the following critical parameters:

Primary Criteria (Must Match or Exceed):

• Inductance value: 33 µH nominal
• Current rating: minimum 1.15 A
• DC resistance: 190mOhm or lower
• Shielding requirement: Shielded configuration
• Operating temperature range: -40°C to 125°C minimum
• Surface mount package compatibility

Secondary Criteria (Preferred Alignment):

• Inductance tolerance within ±30%
• RoHS3 compliance
• Nonstandard package footprint compatibility

Two substitute parts meet these criteria with documented compatibility:

1. SC1608F-330 (Signal Transformer) – Active status alternative with reduced current rating
2. SD6030-330-R (Eaton - Electronics Division) – Active status alternative with enhanced current capability

Parameter Comparison

Engineering Selection Recommendations

SC1608F-330 (Signal Transformer): This substitute maintains identical inductance and footprint dimensions with improved inductance tolerance (±20% vs ±30%). However, the current rating of 720 mA falls below the original 1.15 A specification. This part is suitable only for applications where the actual circuit current demand does not exceed 720 mA. The unshielded configuration may introduce electromagnetic interference considerations in noise-sensitive circuits. Active product status ensures long-term availability and supply chain continuity.

SD6030-330-R (Eaton - Electronics Division): This substitute provides the highest current rating at 1.26 A, exceeding the original 1.15 A specification with DC resistance of 189mOhm (equivalent to the original 190mOhm maximum). Shielded configuration matches the original design intent. The package footprint differs slightly (6.00mm × 6.00mm vs 6.60mm × 4.45mm), requiring PCB layout verification. Active product status and RoHS compliance support procurement continuity. Ferrite core construction with drum core design provides stable performance across the operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can SC1608F-330 be used as a direct replacement for SC1608C-330?

A: SC1608F-330 shares identical inductance (33 µH) and package footprint (6.60mm × 4.45mm × 2.92mm). However, the current rating of 720 mA is 37% lower than the original 1.15 A specification. Substitution is valid only if circuit analysis confirms maximum current draw does not exceed 720 mA. The unshielded configuration differs from the original shielded design.

Q: What are the key differences between SC1608F-330 and SD6030-330-R?

A: SC1608F-330 maintains the original footprint but reduces current capacity to 720 mA and increases DC resistance to 510mOhm. SD6030-330-R increases current capacity to 1.26 A with equivalent DC resistance (189mOhm) and maintains shielding, but requires PCB layout adjustment due to different package dimensions (6.00mm × 6.00mm).

Q: Is SD6030-330-R suitable for high-current applications?

A: SD6030-330-R is rated for 1.26 A continuous current with saturation current of 750mA, making it suitable for applications requiring current levels at or above the original 1.15 A specification. DC resistance of 189mOhm matches the original design performance.

Q: Do substitute parts maintain RoHS compliance?

A: Both SC1608F-330 and SD6030-330-R are RoHS3 compliant, matching or exceeding the original part's compliance status. Moisture sensitivity level remains at MSL 1 (Unlimited) for all parts.

Q: What PCB layout considerations apply to SD6030-330-R?

A: SD6030-330-R package dimensions (6.00mm × 6.00mm) differ from the original (6.60mm × 4.45mm). PCB footprint and component placement must be verified before implementation. The shielded drum core design maintains electromagnetic isolation equivalent to the original shielded inductor.