SCEP147L-120 Equivalent & Substitute Parts

Part Overview

The SCEP147L-120 is a 12 µH shielded inductor manufactured by Signal Transformer, rated for 9 A continuous current with a maximum DC resistance of 13.3 mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is specified for 100 kHz inductance testing. The part is Active status and ROHS3 compliant, making it suitable for modern electronic applications requiring regulated inductance performance in compact form factors.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting mechanical and compliance requirements for direct board-level replacement.

Substiute Parts

SCEP147L-120

Signal TransformerIn Stock: 868SCEP147L-120 Datasheet

Current PartRFQ

CDEP147NP-120MC-125

Sumida America Components Inc.In Stock: 5216CDEP147NP-120MC-125 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCEP147L-120 is determined by the following critical parameters:

• Inductance Value: Must be 12 µH with ±20% tolerance
• Current Rating: Minimum 8.5 A continuous (substitute may be lower than 9 A if saturation current remains at or above 8 A)
• DC Resistance: Maximum 13.31 mOhm (slight variance acceptable within manufacturing tolerance)
• Shielding: Must be shielded construction
• Operating Temperature: Must support -40°C to 125°C range
• Mounting: Surface mount, nonstandard package
• Compliance: ROHS3 compliant minimum

The CDEP147NP-120MC-125 meets these substitution criteria with equivalent inductance, saturation performance, and thermal operating range while maintaining shielded construction and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The CDEP147NP-120MC-125 qualifies as a direct substitute for the SCEP147L-120 based on the following engineering criteria:

Electrical Equivalence: Both parts maintain 12 µH inductance at 100 kHz with identical ±20% tolerance and 8 A saturation current. DC resistance values are equivalent within manufacturing tolerance (13.3 mOhm vs. 13.31 mOhm maximum).

Thermal Compliance: Both components operate across the identical -40°C to 125°C temperature range, ensuring thermal performance parity in end-use applications.

Regulatory Compliance: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting modern environmental and reliability standards.

Physical Compatibility: The substitute part features slightly reduced footprint dimensions (14.50 mm x 14.50 mm vs. 15.00 mm x 14.90 mm) and marginally lower profile (8.00 mm vs. 8.10 mm), providing improved board layout flexibility without compromising mechanical fit.

Current Rating Consideration: The substitute is rated for 8.5 A continuous current versus 9 A for the main part. This 0.5 A difference is acceptable for applications operating at or below 8.5 A continuous load, with identical 8 A saturation performance.

Active Product Status: Both parts maintain Active manufacturing status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the CDEP147NP-120MC-125 replace the SCEP147L-120 in all applications?

A: The substitute is compatible with applications requiring up to 8.5 A continuous current. If your design requires the full 9 A rating of the original part, the substitute is not appropriate. Both parts share identical inductance, saturation current, DC resistance, and thermal operating range.

Q: What is the difference in physical size between these parts?

A: The CDEP147NP-120MC-125 has a slightly smaller footprint (14.50 mm x 14.50 mm versus 15.00 mm x 14.90 mm) and lower profile (8.00 mm versus 8.10 mm). These dimensional differences may provide layout advantages on space-constrained boards while maintaining surface mount compatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both the SCEP147L-120 and CDEP147NP-120MC-125 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and reliability requirements.

Q: What determines substitution eligibility for this inductor category?

A: Substitution is based on matching inductance value (12 µH ±20%), saturation current (8 A minimum), DC resistance (13.3 mOhm maximum), shielded construction, surface mount packaging, and operating temperature range (-40°C to 125°C). Current rating may be lower if saturation performance is maintained.

Q: Is the DC resistance difference significant?

A: The DC resistance values are equivalent within manufacturing tolerance (13.3 mOhm versus 13.31 mOhm maximum). This 0.01 mOhm difference is negligible for circuit performance and thermal dissipation calculations.

Q: Can I use the substitute if my application requires the 9 A rating?

A: No. If your circuit design requires 9 A continuous current operation, the SCEP147L-120 must be used. The substitute is rated for 8.5 A maximum continuous current.