SPD127-332M Equivalent & Substitute Parts

Part Overview

The SPD127-332M is a 3.3 µH shielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 7.5 A continuous current with a maximum DC resistance of 18 mOhm. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part operates across an industrial temperature range of -55°C to 125°C and is mounted as a surface mount device in a nonstandard 12.00mm × 12.00mm package footprint.

Substiute Parts

SPD127-332M

API Delevan Inc.In Stock: 1078SPD127-332M Datasheet

Current PartRFQ

HRSPD127-332M

API Delevan Inc.In Stock: 963HRSPD127-332M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPD127-332M is determined by the following critical parameters:

• Inductance Value: Must be 3.3 µH with ±20% tolerance
• Core Material & Shielding: Ferrite core with shielded construction
• DC Resistance: Maximum 18 mOhm
• Mounting Configuration: Surface mount, nonstandard package
• Test Frequency: 100 kHz measurement standard

The HRSPD127-332M qualifies as a functional equivalent based on matching inductance, core material, shielding type, DC resistance specification, and test frequency. Differences in current rating and physical dimensions are secondary considerations that do not preclude substitution in applications where the lower current rating of 5.8 A is acceptable within the circuit design constraints.

Parameter Comparison

Engineering Selection Recommendations

The HRSPD127-332M is the primary equivalent for the obsolete SPD127-332M based on matching electrical specifications and active product status. Selection of the HRSPD127-332M is appropriate when:

• Circuit current requirements do not exceed 5.8 A continuous operation
• PCB layout accommodates the increased height of 9.02 mm (versus 8.00 mm)
• Procurement benefits from active inventory and standard tape & reel packaging
• Extended operating temperature range to 130°C provides additional thermal margin

The HRSPD127-332M maintains identical inductance, tolerance, core material, shielding configuration, and DC resistance characteristics. The substitute part is manufactured by the same supplier (API Delevan Inc.) within the same product family, ensuring design continuity and electromagnetic performance equivalence at the specified test frequency of 100 kHz.

Frequently Asked Questions (FAQ)

Q: Can the HRSPD127-332M replace the SPD127-332M in all applications?

A: Substitution is valid when the circuit current requirement does not exceed 5.8 A. The HRSPD127-332M has a lower current rating (5.8 A) compared to the original part (7.5 A). Verify that your application's maximum current draw remains below the substitute part's rating.

Q: What are the physical compatibility considerations?

A: The HRSPD127-332M has a slightly larger footprint (12.07 × 12.07 mm versus 12.00 × 12.00 mm) and greater height (9.02 mm versus 8.00 mm). Confirm that PCB layout and component clearances accommodate these dimensional differences before implementation.

Q: Are the electrical characteristics identical?

A: Yes. Both parts share identical inductance (3.3 µH ±20%), DC resistance (18 mOhm max), core material (ferrite), shielding type (shielded), and test frequency (100 kHz). Electromagnetic performance is equivalent at the specified operating frequency.

Q: What is the advantage of using the HRSPD127-332M?

A: The HRSPD127-332M is an active product with standard tape & reel packaging, ensuring reliable procurement and inventory availability. It also provides an extended operating temperature range (-55°C to 130°C versus -55°C to 125°C).

Q: Does packaging format affect electrical performance?

A: No. The change from nonstandard to tape & reel (TR) packaging is a procurement and assembly consideration only. Electrical and magnetic properties remain unchanged.