SCEP125-6R0 Equivalent & Substitute Parts

Part Overview

The SCEP125-6R0 is a 6 µH shielded wirewound inductor manufactured by Signal Transformer, rated for 12 A continuous current with 8 mOhm maximum DC resistance. This surface mount component is designed for applications requiring fixed inductance in compact nonstandard packages. The part is active in production status with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for industrial and commercial electronic assemblies operating across the -40°C to 125°C temperature range.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance category.

Key Parameters

Parameter	Value	Unit
Inductance	6	µH
Inductance Tolerance	±20	%
Current Rating	12	A
Current - Saturation (Isat)	6.7	A
DC Resistance (DCR) Maximum	8	mOhm
Shielding	Shielded	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-40 to 125	°C
Inductance Test Frequency	100	kHz
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the SCEP125-6R0 is determined by the following critical parameters:

Inductance value: 6 µH (within ±20% tolerance specification)
DC resistance: 8 mOhm maximum
Current saturation point: 6.7 A minimum
Shielding: Shielded construction required
Mounting: Surface mount, nonstandard package
Temperature range: -40°C to 125°C minimum
Compliance: RoHS3 and REACH status alignment

The CEP125NP-6R0MC from Sumida America Components Inc. meets these substitution criteria with equivalent inductance, DC resistance, saturation current, shielding, mounting type, temperature rating, and regulatory compliance. Dimensional variations within the nonstandard package classification and current rating differences are evaluated against application-specific requirements.

Parameter Comparison

Parameter	SCEP125-6R0 (Signal Transformer)	CEP125NP-6R0MC (Sumida America)	Match Status
Inductance	6 µH	6 µH	Equivalent
Inductance Tolerance	±20%	±20%	Equivalent
Current Rating	12 A	9.9 A	Substitute rated lower
Current - Saturation (Isat)	6.7 A	6.7 A	Equivalent
DC Resistance (DCR) Maximum	8 mOhm	8 mOhm	Equivalent
Shielding	Shielded	Shielded	Equivalent
Type	Wirewound	Drum Core, Wirewound	Compatible construction
Operating Temperature Range	-40 to 125°C	-40 to 125°C	Equivalent
Inductance Test Frequency	100 kHz	100 kHz	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent
Package / Case	Nonstandard	Nonstandard	Equivalent classification
Size / Dimension	12.90 x 12.90 mm	12.50 x 12.50 mm	Dimensional variation
Height - Seated (Max)	5.80 mm	5.60 mm	Dimensional variation

Engineering Selection Recommendations

The CEP125NP-6R0MC qualifies as a direct substitute for the SCEP125-6R0 based on electrical parameter equivalence and regulatory compliance alignment. Both components maintain ROHS3 compliance, identical operating temperature ranges, and equivalent inductance and DC resistance specifications at the 100 kHz test frequency.

The primary consideration in component selection is the current rating differential: the SCEP125-6R0 is rated for 12 A continuous current, while the CEP125NP-6R0MC is rated for 9.9 A. Both components share an identical saturation current of 6.7 A. Applications operating at continuous currents exceeding 9.9 A require the original SCEP125-6R0 specification. Applications operating within the 9.9 A continuous current envelope may utilize the CEP125NP-6R0MC substitute without electrical performance degradation.

Dimensional variations (12.90 mm vs. 12.50 mm footprint; 5.80 mm vs. 5.60 mm height) must be verified against PCB layout and mechanical clearance requirements for the target application.

Frequently Asked Questions (FAQ)

Q: Can the CEP125NP-6R0MC replace the SCEP125-6R0 in all applications?

A: The CEP125NP-6R0MC is electrically equivalent for inductance, DC resistance, and saturation current. However, the continuous current rating is 9.9 A versus 12 A. Substitution is valid only when application current requirements do not exceed 9.9 A. Verify PCB layout compatibility with the 0.40 mm smaller footprint and 0.20 mm reduced height.

Q: What are the critical electrical parameters for substitution?

A: Inductance (6 µH ±20%), DC resistance (8 mOhm maximum), saturation current (6.7 A), and shielding (shielded construction) are the primary electrical criteria. Both parts meet these specifications identically.

Q: Are there compliance or regulatory differences between these parts?

A: Both components are ROHS3 compliant, REACH unaffected, and classified under identical ECCN and HTSUS codes. No regulatory differentiation exists between the two parts.

Q: How do the package dimensions affect substitution?

A: The CEP125NP-6R0MC has a smaller footprint (12.50 x 12.50 mm versus 12.90 x 12.90 mm) and lower profile (5.60 mm versus 5.80 mm). PCB layout and mechanical clearance must accommodate these dimensional variations. The nonstandard package classification applies to both components.

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

A: Both are wirewound inductors. The CEP125NP-6R0MC uses drum core construction with ferrite material, while the SCEP125-6R0 uses standard wirewound construction. Both achieve equivalent electrical performance at the specified test frequency and operating conditions.

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