SPD73R-563M Equivalent & Substitute Parts

Part Overview

The SPD73R-563M is a 56 µH shielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 1.1 A continuous current with a maximum DC resistance of 470 mOhm. This surface mount component is designed for applications requiring controlled inductance with ferrite core shielding in a compact nonstandard package. The part maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent inductance values, current ratings, shielding characteristics, and package dimensions align within acceptable engineering tolerances for the intended application.

Substiute Parts

SPD73R-563M

API Delevan Inc.In Stock: 1164SPD73R-563M Datasheet

Current PartRFQ

SRR0745A-560M

Bourns Inc.In Stock: 4863SRR0745A-560M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPD73R-563M is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 56 µH at 1 kHz test frequency
• Inductance tolerance: ±20%
• Core material: Ferrite with shielding
• Package dimensions: 7.30mm x 7.30mm footprint
• Mounting type: Surface mount

Secondary Compatibility Factors:

• Current rating: Minimum 950 mA (substitute may operate at reduced current capacity)
• DC resistance: Lower values preferred for reduced losses
• Operating temperature range: Minimum -40°C to 125°C
• Saturation current: Minimum 1.1 A
• RoHS3 compliance and MSL rating

The SRR0745A-560M qualifies as a direct substitute based on matching inductance, core material, shielding, footprint dimensions, and compliance certifications. The substitute exhibits lower DC resistance (240 mOhm vs. 470 mOhm) and reduced current rating (950 mA vs. 1.1 A), requiring application-level verification of current requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the SPD73R-563M and SRR0745A-560M maintain active product status with full RoHS3 compliance and unlimited moisture sensitivity ratings, ensuring long-term availability and environmental regulatory compliance. The SRR0745A-560M offers superior DC resistance performance (240 mOhm vs. 470 mOhm), reducing resistive losses in the inductor. However, the reduced continuous current rating (950 mA vs. 1.1 A) requires verification against circuit current requirements. The substitute part includes AEC-Q200 automotive qualification, providing additional reliability assurance for demanding applications. The height difference (4.70mm vs. 3.90mm) must be evaluated for PCB layout constraints. Selection between these parts depends on whether the application current demand exceeds 950 mA and whether the additional 0.80mm height is acceptable within the design envelope.

Frequently Asked Questions (FAQ)

Q: Can the SRR0745A-560M replace the SPD73R-563M in all applications?

A: Substitution is valid when circuit current requirements do not exceed 950 mA continuous. If the application requires the full 1.1 A rating of the original part, the substitute is not suitable. The lower DC resistance of the substitute may improve efficiency in current-limited applications.

Q: What is the impact of the 0.80mm height difference between these parts?

A: The SRR0745A-560M is 0.80mm taller (4.70mm vs. 3.90mm). This difference must be evaluated against PCB layout constraints, component clearance requirements, and enclosure height limitations. Footprint compatibility is maintained at 7.30mm x 7.30mm.

Q: Are both parts suitable for the full operating temperature range?

A: The SPD73R-563M operates from -55°C to 125°C, while the SRR0745A-560M operates from -40°C to 125°C. If the application requires operation below -40°C, only the original part is suitable.

Q: What does the ±20% inductance tolerance mean for substitution?

A: Both parts share ±20% tolerance, meaning actual inductance values may vary from 44.8 µH to 67.2 µH. This tolerance band is identical for both parts and does not affect substitution eligibility.

Q: Why does the substitute have lower DC resistance?

A: The SRR0745A-560M exhibits 240 mOhm maximum DC resistance compared to 470 mOhm for the original part. Lower resistance reduces I²R losses and heat generation, improving efficiency. This is a beneficial characteristic when current ratings are compatible with the application.

Q: Are both parts RoHS3 compliant?

A: Yes, both the SPD73R-563M and SRR0745A-560M are ROHS3 compliant with unlimited moisture sensitivity ratings, ensuring compliance with environmental regulations and reliability in standard storage and handling conditions.