SCMS5D25-330 Equivalent & Substitute Parts

Part Overview

The SCMS5D25-330 is a 33 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 1.04 A continuous current with a maximum DC resistance of 330mOhm. This component is classified as Active product status and is ROHS3 compliant. Alternative parts may be required due to inventory constraints, application-specific performance requirements, or supply chain considerations.

Key Parameters

Parameter	Value
Inductance	33 µH
Tolerance	±20%
Current Rating	1.04 A
DC Resistance (DCR)	330mOhm Max
Shielding	Shielded
Operating Temperature Range	-40°C ~ 125°C
Mounting Type	Surface Mount
Package Type	Nonstandard
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

The CDPH4D19FNP-470MC from Sumida America Components Inc. is listed as a manufacturer-recommended substitute. Substitution eligibility is determined by the following parameters:

Shielding type (Shielded)
Surface mount packaging classification
Operating temperature range compatibility
RoHS3 compliance status
Nonstandard package form factor
Current rating within acceptable tolerance

The substitute part maintains shielded construction and surface mount configuration, meeting the core mechanical and environmental requirements of the original specification.

Parameter Comparison

Parameter	SCMS5D25-330 (Main)	CDPH4D19FNP-470MC (Substitute)
Manufacturer	Signal Transformer	Sumida America Components Inc.
Inductance	33 µH	47 µH
Tolerance	±20%	±20%
Current Rating (Amps)	1.04 A	1.03 A
DC Resistance (DCR)	330mOhm Max	293mOhm Max
Shielding	Shielded	Shielded
Operating Temperature Range	-40°C ~ 125°C	-40°C ~ 105°C
Mounting Type	Surface Mount	Surface Mount
Package Type	Nonstandard	Nonstandard
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Inductance Frequency - Test	100 kHz	100 kHz
Size / Dimension	0.205" L x 0.205" W (5.20mm x 5.20mm)	0.193" L x 0.193" W (4.90mm x 4.90mm)
Height - Seated (Max)	0.110" (2.80mm)	0.079" (2.00mm)
Product Status	Active	Active

Engineering Selection Recommendations

Both the SCMS5D25-330 and CDPH4D19FNP-470MC maintain Active product status and ROHS3 compliance. The substitute part features lower DC resistance (293mOhm vs. 330mOhm) and a reduced maximum operating temperature of 105°C compared to the main part's 125°C. The inductance value differs (47 µH vs. 33 µH), and physical dimensions are slightly smaller. Current ratings are equivalent at approximately 1.03–1.04 A. Selection between these parts depends on circuit requirements for inductance value, maximum operating temperature, and physical space constraints.

Frequently Asked Questions (FAQ)

Q: Can the CDPH4D19FNP-470MC be used as a direct replacement for the SCMS5D25-330?

A: The substitute part shares the same shielding type, surface mount configuration, and compliance certifications. However, the inductance value is 47 µH versus 33 µH, and the maximum operating temperature is 105°C versus 125°C. Circuit-level validation is required to confirm compatibility with the application's inductance and temperature requirements.

Q: What are the key differences in physical dimensions?

A: The SCMS5D25-330 measures 0.205" × 0.205" × 0.110" (5.20mm × 5.20mm × 2.80mm), while the CDPH4D19FNP-470MC measures 0.193" × 0.193" × 0.079" (4.90mm × 4.90mm × 2.00mm). The substitute is smaller in all dimensions.

Q: Are both parts RoHS compliant?

A: Yes, both the SCMS5D25-330 and CDPH4D19FNP-470MC are ROHS3 compliant.

Q: How do the DC resistance values compare?

A: The SCMS5D25-330 has a maximum DC resistance of 330mOhm, while the CDPH4D19FNP-470MC has a maximum of 293mOhm. The substitute exhibits lower resistance.

Q: What is the difference in current saturation ratings?

A: The SCMS5D25-330 has a saturation current (Isat) of 630mA, while the CDPH4D19FNP-470MC has an Isat of 360mA. This represents a significant difference in saturation behavior.

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