SC1813FH-330 Equivalent & Substitute Parts

Part Overview

The SC1813FH-330 is a 33 µH unshielded wirewound inductor manufactured by Signal Transformer, designed for surface mount applications requiring moderate current handling and compact form factors. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or application-specific requirements within the specified parameter tolerances.

Substiute Parts

SC1813FH-330

Signal TransformerIn Stock: 957SC1813FH-330 Datasheet

Current PartRFQ

UP1B-330-R

Eaton - Electronics DivisionIn Stock: 2119UP1B-330-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SC1813FH-330 are qualified based on the following critical parameters:

• Inductance Value: 33 µH ±20% tolerance
• Current Rating: Minimum 820 mA (substitute must support primary application current requirements)
• DC Resistance: Maximum 367 mOhm (electrical performance within acceptable limits)
• Saturation Current: Minimum 900 mA (operational headroom maintained)
• Package Dimensions: Identical 0.350" L x 0.240" W x 0.197" H footprint (mechanical compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)
• Shielding Configuration: Unshielded (electromagnetic environment consistency)
• Compliance: ROHS3 compliant, MSL 1 rating

The substitute part UP1B-330-R meets these criteria with equivalent inductance, compatible current handling, and identical mechanical form factor.

Parameter Comparison

Engineering Selection Recommendations

Both the SC1813FH-330 and UP1B-330-R are Active product status components with ROHS3 compliance and MSL 1 ratings, qualifying them for equivalent use in surface mount applications. The UP1B-330-R substitute demonstrates compatible electrical performance across all critical parameters: inductance value, current handling, and DC resistance remain within acceptable operational limits. The substitute's higher saturation current (990 mA vs. 900 mA) provides additional operational margin.

The primary consideration is the operating temperature range: the SC1813FH-330 supports -40°C to 125°C, while the UP1B-330-R is rated to -40°C to 85°C. Applications requiring sustained operation above 85°C must use the primary part. For applications within the 85°C maximum, the substitute provides equivalent functionality with identical mechanical compatibility and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can UP1B-330-R be used as a direct replacement for SC1813FH-330 in all applications?

A: The UP1B-330-R is mechanically and electrically compatible for applications operating within -40°C to 85°C. Applications requiring operation above 85°C must use the SC1813FH-330 due to its extended temperature rating to 125°C.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both components share identical package dimensions of 0.350" L x 0.240" W x 0.197" H (8.89mm x 6.10mm x 5.00mm), ensuring PCB footprint compatibility and assembly process compatibility.

Q: What is the difference between wirewound and drum core wirewound construction?

A: Both are wirewound inductors. The UP1B-330-R uses drum core construction with ferrite material, while the SC1813FH-330 uses standard wirewound construction. Both deliver equivalent inductance and current handling for this application.

Q: How do the current ratings compare?

A: The SC1813FH-330 is rated at 920 mA, while the UP1B-330-R is rated at 820 mA. The substitute's saturation current of 990 mA exceeds the primary part's 900 mA, providing operational headroom. Applications requiring sustained current above 820 mA should use the primary part.

Q: Are both parts RoHS compliant?

A: Yes. Both SC1813FH-330 and UP1B-330-R are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, meeting equivalent regulatory requirements.