SPD74-564M Equivalent & Substitute Parts

Part Overview

The SPD74-564M is a 560 µH shielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 360 mA maximum current with a DC resistance of 3.62Ω. The product status is obsolete, making it necessary to identify equivalent components that maintain functional compatibility with the original specification. Substitution candidates must preserve critical electrical parameters including inductance value, current rating, and shielding characteristics to ensure circuit performance.

Substiute Parts

SPD74-564M

API Delevan Inc.In Stock: 710SPD74-564M Datasheet

Current PartRFQ

HRSPD74-564M

API Delevan Inc.In Stock: 1122HRSPD74-564M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SPD74-564M must be evaluated based on the following critical parameters:

Inductance Value: All substitute components must match 560 µH ±20% tolerance to maintain circuit resonance and filter characteristics.

Shielding Requirement: The shielded construction is mandatory for EMI control and must be preserved in all substitute selections.

Core Material: Ferrite core material ensures the required frequency response characteristics and must remain consistent.

Surface Mount Compatibility: The original component uses surface mount technology; substitute components must maintain this mounting approach.

DC Resistance: The maximum DCR of 3.62Ω defines current-handling capacity and power loss profile. Substitute components with lower DCR are acceptable as they improve efficiency without exceeding thermal limits.

Current Rating: The 360 mA saturation current defines the maximum safe operating current. Substitute components with lower current ratings impose circuit design constraints and are not suitable; those with equal or higher ratings are acceptable.

Parameter Comparison

Engineering Selection Recommendations

The HRSPD74-564M serves as an active-status substitute for the obsolete SPD74-564M. Both components share identical inductance values, ferrite core material, shielding characteristics, and nonstandard package geometry, enabling direct mechanical and electrical substitution in surface mount applications.

The HRSPD74-564M exhibits a reduced current rating of 240 mA compared to the original specification of 360 mA. This limitation requires circuit analysis to confirm that operating currents remain within the 240 mA threshold. Where circuit requirements demand currents exceeding 240 mA, the HRSPD74-564M is not suitable.

The superior DC resistance of 2.6Ω (compared to 3.62Ω) in the HRSPD74-564M reduces power dissipation and thermal loading, providing enhanced efficiency performance.

The extended operating temperature range of the HRSPD74-564M (-55°C ~ 130°C) expands the thermal envelope beyond the original specification (-55°C ~ 125°C), supporting broader environmental applications.

The HRSPD74-564M is RoHS non-compliant, consistent with the original part. Product status is active, ensuring continued availability.

Frequently Asked Questions (FAQ)

Can HRSPD74-564M replace SPD74-564M in all applications?

Direct substitution is valid only when circuit operating current remains below 240 mA. The HRSPD74-564M has a lower saturation current rating than the original part. Applications operating at currents between 240 mA and 360 mA require alternative component selection.

What is the significance of the different inductance test frequencies (1 kHz vs. 10 kHz)?

The inductance test frequency defines the measurement conditions under which the 560 µH specification is verified. Both components meet the 560 µH ±20% tolerance at their respective test frequencies. Selection should confirm compatibility with the circuit's operating frequency range.

Are the physical dimensions compatible for direct board substitution?

The SPD74-564M measures 0.287" L × 0.287" W × 0.185" H (7.30mm × 7.30mm × 4.70mm), while the HRSPD74-564M measures 0.290" L × 0.290" W × 0.198" H (7.37mm × 7.37mm × 5.03mm). The dimensional differences are minimal and fall within typical printed circuit board placement tolerances for surface mount applications. Both components use nonstandard package geometry.

Does the improved DC resistance of HRSPD74-564M affect circuit performance?

Lower DC resistance reduces power dissipation according to P = I²R. The HRSPD74-564M's 2.6Ω resistance (versus 3.62Ω) improves thermal performance and efficiency. This represents a performance enhancement when current levels remain within the 240 mA rating.

What compliance differences exist between the parts?

Both components are RoHS non-compliant and REACH unaffected. The HRSPD74-564M provides moisture sensitivity classification (MSL 1 - Unlimited), indicating superior handling flexibility during storage and assembly.