SPD127-472M Equivalent & Substitute Inductor Reference Guide

Part Overview

The Delevan SPD127-472M is a fixed, shielded, surface-mount drum core wirewound inductor with a nominal inductance of 4.7 µH. It features a current rating of 6.8 A and a maximum DC resistance (DCR) of 22 mOhm, delivered in a nonstandard package measuring 12.00mm x 12.00mm x 8.00mm (L x W x H). The SPD127-472M, part of the SPD127 series, is classified as obsolete, making identification of compatible substitute parts necessary for ongoing designs or legacy equipment support.

Key Parameters

Parameter	SPD127-472M
Inductance	4.7 µH
Tolerance	±20%
Current Rating (Amps)	6.8 A
DC Resistance (DCR)	22 mOhm Max
Shielding	Shielded
Mounting Type	Surface Mount
Package / Case	Nonstandard (12.00mm x 12.00mm, H: 8.00mm)
Material - Core	Ferrite
Operating Temperature	-55°C ~ 125°C
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitutes for the SPD127-472M are determined strictly by matching or closely aligning the following key parameters: inductance (4.7 µH), tolerance (±20%), maximum DC resistance (22 mOhm), shielding (shielded), mounting type (surface mount), package/case dimensions (nonstandard, nominally 12mm x 12mm), core material (ferrite), operating temperature range, RoHS status, and moisture sensitivity level (MSL). Only parts that meet these criteria are considered suitable substitutes.

Parameter Comparison

Parameter	SPD127-472M (Delevan)	HRSPD127-472M (API Delevan Inc.)
Inductance	4.7 µH	4.7 µH
Tolerance	±20%	±20%
Current Rating (Amps)	6.8 A	5.2 A
DC Resistance (DCR)	22 mOhm Max	22 mOhm Max
Shielding	Shielded	Shielded
Mounting Type	Surface Mount	Surface Mount
Package / Case	Nonstandard (12.00mm x 12.00mm x 8.00mm)	Nonstandard (12.07mm x 12.07mm x 9.02mm)
Material - Core	Ferrite	Ferrite
Operating Temperature	-55°C ~ 125°C	-55°C ~ 130°C
RoHS Status	RoHS non-compliant	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	-

Engineering Selection Recommendations

Selection must be based solely on product status, RoHS compliance, and provided certifications. The SPD127-472M is obsolete and RoHS non-compliant, and HRSPD127-472M is the available substitute with an active product status, also RoHS non-compliant. Both have a moisture sensitivity level of 1 (Unlimited), and their package and functional parameters align with the original component within provided specifications.

Frequently Asked Questions (FAQ)

Q1: What are the strict criteria for substituting the SPD127-472M?
A1: The criteria are inductance value, tolerance, maximum DC resistance, shielding type, mounting method, package/case size, core material, operating temperature, RoHS status, and MSL as explicitly listed in the key parameters.

Q2: Is the nonstandard package size significant when substituting?
A2: Yes, dimensions must closely align. The SPD127-472M package is 12.00mm x 12.00mm x 8.00mm, and the HRSPD127-472M is 12.07mm x 12.07mm x 9.02mm, meeting nonstandard package similarity requirements.

Q3: Are both SPD127-472M and HRSPD127-472M RoHS compliant?
A3: Both SPD127-472M and HRSPD127-472M are RoHS non-compliant, meeting compatibility for non-RoHS designs.

Q4: What mounting type do these substitute parts require?
A4: Both require surface-mount technology.

Q5: Are there any differences in the moisture sensitivity level (MSL) between the main part and the substitute?
A5: Both SPD127-472M and HRSPD127-472M share MSL 1 (Unlimited), ensuring compatibility in moisture-sensitive processes.

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