SPD127-223M Equivalent & Substitute Parts

Part Overview

The SPD127-223M is a 22 µH shielded drum core, wirewound inductor manufactured by API Delevan Inc., rated for 3.6 A with a maximum DC resistance of 55 mOhm. This surface mount component operates across the temperature range of -55°C to 125°C and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	SPD127-223M
Inductance	22 µH
Tolerance	±20%
Current Rating	3.6 A
DC Resistance (DCR)	55 mOhm Max
Shielding	Shielded
Core Material	Ferrite
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
Package Type	Nonstandard
Size	12.00 mm x 12.00 mm x 8.00 mm (H)

Substitute Part Grouping Explanation

Substitution eligibility for the SPD127-223M is determined by the following critical parameters:

Inductance Value: Must be 22 µH (±20% tolerance)
Current Rating: Minimum 3.6 A to meet or exceed the original specification
DC Resistance: Lower or equal to 55 mOhm to maintain electrical performance
Shielding: Must be shielded to prevent electromagnetic interference
Core Material: Ferrite construction for equivalent magnetic properties
Mounting Type: Surface mount configuration
Operating Temperature Range: Must encompass or exceed -55°C to 125°C
Package Compatibility: Nonstandard package with physical dimensions within acceptable tolerance

All substitute parts listed meet these core electrical and mechanical criteria, ensuring functional equivalence in circuit applications.

Parameter Comparison

Parameter	SPD127-223M	HRSPD127-223M	DR127-220-R	CDRH127/HPNP-220MC	SRR1208-220ML
Manufacturer	API Delevan Inc.	API Delevan Inc.	Eaton - Electronics Division	Sumida America Components Inc.	Bourns Inc.
Inductance	22 µH	22 µH	22 µH	22 µH	22 µH
Tolerance	±20%	±20%	±20%	±20%	±20%
Current Rating (A)	3.6	3.2	4.0	3.73	4.6
DC Resistance (mOhm)	55 Max	53 Max	39.1	48.8 Max	43 Max
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded
Core Material	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite
Operating Temperature	-55°C ~ 125°C	-55°C ~ 130°C	-40°C ~ 125°C	-40°C ~ 100°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Non-compliant	Non-compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant
Size (L x W x H)	12.00 x 12.00 x 8.00 mm	12.07 x 12.07 x 9.02 mm	12.50 x 12.50 x 8.00 mm	12.50 x 12.50 x 8.00 mm	12.70 x 12.70 x 8.50 mm

Engineering Selection Recommendations

HRSPD127-223M (API Delevan Inc.): This part maintains the same manufacturer lineage as the original SPD127-223M and offers active product status. It provides an extended operating temperature range to 130°C and improved current saturation specification (3.71 A). However, the current rating is reduced to 3.2 A, which falls below the original 3.6 A specification. This part is suitable for applications where the lower current rating is acceptable and extended temperature performance is beneficial. RoHS non-compliance matches the original part.

DR127-220-R (Eaton - Electronics Division): This substitute offers the highest current rating at 4.0 A and the lowest DC resistance at 39.1 mOhm, providing superior electrical performance. It achieves ROHS3 compliance and maintains the same height profile as the original part. The operating temperature range is -40°C to 125°C, which does not extend to the lower -55°C limit of the original. This part is optimal for applications prioritizing electrical efficiency and regulatory compliance where the reduced lower temperature limit is acceptable.

CDRH127/HPNP-220MC (Sumida America Components Inc.): This part delivers a current rating of 3.73 A and DC resistance of 48.8 mOhm, closely matching the original electrical specifications. It maintains the same height as the original part and provides unlimited moisture sensitivity level. The operating temperature range is -40°C to 100°C, which does not meet the original -55°C lower limit or the 125°C upper limit. This part is suitable for applications within the -40°C to 100°C temperature window.

SRR1208-220ML (Bourns Inc.): This substitute provides a current rating of 4.6 A and DC resistance of 43 mOhm, delivering strong electrical performance. It achieves ROHS3 compliance and offers the highest self-resonant frequency at 7 MHz with a Q factor of 23 @ 2.52 MHz. The operating temperature range is -40°C to 125°C. This part is suitable for applications requiring regulatory compliance and high-frequency performance characteristics where the reduced lower temperature limit is acceptable.

Frequently Asked Questions (FAQ)

Q: Can HRSPD127-223M directly replace SPD127-223M in all applications?

A: HRSPD127-223M shares the same inductance, tolerance, and shielding specifications as SPD127-223M. However, the current rating is reduced from 3.6 A to 3.2 A. Direct replacement is only suitable if the application current requirement does not exceed 3.2 A. The extended operating temperature range to 130°C provides additional margin in high-temperature environments.

Q: Why does DR127-220-R have a different operating temperature range?

A: DR127-220-R is specified for -40°C to 125°C, which does not include the -55°C lower limit of SPD127-223M. This reflects the design specifications of the Eaton component. Applications requiring operation below -40°C must use alternative substitutes or the original part if available.

Q: What is the significance of DC resistance differences among substitutes?

A: DC resistance directly affects power dissipation and thermal performance. Lower DC resistance reduces I²R losses. DR127-220-R at 39.1 mOhm provides the lowest dissipation, while SPD127-223M at 55 mOhm has the highest. Selection depends on thermal budget and efficiency requirements of the application.

Q: Are all substitute parts RoHS compliant?

A: No. SPD127-223M and HRSPD127-223M are RoHS non-compliant. DR127-220-R and SRR1208-220ML are ROHS3 compliant. CDRH127/HPNP-220MC compliance status is not specified in available data. Applications subject to RoHS regulations must use DR127-220-R or SRR1208-220ML.

Q: How do physical dimensions affect substitution?

A: All substitute parts are nonstandard package types with similar footprints (12.00–12.70 mm length and width). Height varies from 8.00 mm to 9.02 mm. PCB layout and clearance requirements must accommodate the specific substitute dimensions. HRSPD127-223M has the greatest height at 9.02 mm and may require design verification for space-constrained applications.

Q: Which substitute is best for high-frequency applications?

A: SRR1208-220ML specifies a self-resonant frequency of 7 MHz and Q factor of 23 @ 2.52 MHz, making it suitable for higher-frequency circuit operation. Other substitutes do not provide self-resonant frequency or Q factor data.

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