SC4020FH-150 Equivalent & Substitute Parts

Part Overview

The SC4020FH-150 is a 15 µH unshielded wirewound surface mount inductor manufactured by Signal Transformer, rated for 4.1 A continuous current with a maximum DC resistance of 45 mOhm. This component is classified as Active product status with full RoHS3 compliance. 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

SC4020FH-150

Signal TransformerIn Stock: 797SC4020FH-150 Datasheet

Current PartRFQ

UP2-150-R

Eaton - Electronics DivisionIn Stock: 1446UP2-150-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC4020FH-150 is determined by the following critical parameters:

• Inductance Value: 15 µH with ±20% tolerance
• Current Rating: Minimum 4.1 A continuous current capability
• DC Resistance: Maximum 45 mOhm to maintain thermal and efficiency characteristics
• Shielding Configuration: Unshielded construction
• Mounting Technology: Surface mount compatible
• Package Classification: Nonstandard form factor
• Compliance Standards: RoHS3 compliance required

The UP2-150-R from Eaton - Electronics Division meets the inductance, tolerance, shielding, mounting, and compliance requirements. However, the current rating of 3.6 A is lower than the SC4020FH-150 specification of 4.1 A, and the saturation current is 2.4 A versus 4.3 A. These differences must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Both components maintain RoHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage protocols. The SC4020FH-150 and UP2-150-R share identical inductance values, tolerance specifications, and DC resistance characteristics within acceptable engineering margins. Selection between these parts depends on circuit current requirements: the SC4020FH-150 supports higher continuous current (4.1 A) and saturation current (4.3 A), while the UP2-150-R operates at reduced ratings (3.6 A continuous, 2.4 A saturation). Active product status confirms ongoing availability and manufacturer support for both components.

Frequently Asked Questions (FAQ)

Q: Can UP2-150-R replace SC4020FH-150 in all applications?

A: Substitution is valid only when circuit current requirements do not exceed 3.6 A continuous operation. Applications requiring the full 4.1 A rating of the SC4020FH-150 require the original part or equivalent with matching current specifications.

Q: Are the physical dimensions compatible between these parts?

A: Both components use nonstandard package classifications with different physical dimensions. SC4020FH-150 measures 19.50mm × 13.30mm × 6.90mm (height), while UP2-150-R measures 13.74mm × 8.76mm × 5.86mm (height). PCB layout and mechanical clearance must be verified before substitution.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both SC4020FH-150 and UP2-150-R are RoHS3 compliant with MSL Level 1 rating, supporting equivalent environmental and regulatory requirements.

Q: What is the significance of DC resistance matching?

A: DC resistance values of 45 mOhm (SC4020FH-150) and 44.9 mOhm (UP2-150-R) are functionally equivalent within engineering tolerance, ensuring comparable thermal performance and power dissipation characteristics.

Q: How does saturation current affect substitution decisions?

A: Saturation current defines the threshold at which inductance begins to degrade. The SC4020FH-150 saturates at 4.3 A while UP2-150-R saturates at 2.4 A. Applications operating near saturation limits require the higher-rated component.