SPD73R-154M Equivalent & Substitute Parts

Part Overview

The SPD73R-154M is a 150 µH shielded drum core wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications with a current rating of 700 mA and maximum DC resistance of 890 mOhm. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent inductance values, shielding characteristics, and compatible mounting specifications are maintained within acceptable electrical parameter tolerances.

Substiute Parts

SPD73R-154M

API Delevan Inc.In Stock: 666SPD73R-154M Datasheet

Current PartRFQ

SRR0745A-151M

Bourns Inc.In Stock: 3947SRR0745A-151M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPD73R-154M is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 150 µH (±20% tolerance band)
• Shielding type: Shielded configuration required
• Core material: Ferrite
• Mounting type: Surface Mount
• Package footprint: 7.30mm x 7.30mm

Secondary Compatibility Factors:

• Current rating must not exceed application requirements
• DC resistance must be within acceptable limits for circuit performance
• Operating temperature range must encompass application environment
• RoHS and REACH compliance status

The SRR0745A-151M qualifies as a substitute based on matching inductance (150 µH), identical footprint dimensions (7.30mm x 7.30mm), shielded ferrite core construction, and surface mount configuration. Electrical parameter variations exist within acceptable substitution boundaries.

Parameter Comparison

Engineering Selection Recommendations

Both SPD73R-154M and SRR0745A-151M maintain Active product status and ROHS3 compliance. The SRR0745A-151M carries AEC-Q200 automotive qualification, providing additional reliability documentation for applications requiring automotive-grade components.

Selection between these parts depends on circuit current requirements. The SPD73R-154M supports 700 mA continuous current, while the SRR0745A-151M is rated for 480 mA. Applications operating below 480 mA can utilize either part. Applications requiring current between 480 mA and 700 mA must use the SPD73R-154M.

The SRR0745A-151M exhibits lower DC resistance (760 mOhm vs. 890 mOhm), resulting in reduced power dissipation in equivalent current conditions. Height difference (4.70mm vs. 3.90mm) must be verified against PCB layout constraints.

Operating temperature range differs: SPD73R-154M operates from -55°C to 125°C, while SRR0745A-151M operates from -40°C to 125°C. Applications requiring operation below -40°C require the SPD73R-154M.

Frequently Asked Questions (FAQ)

Q: Can SRR0745A-151M replace SPD73R-154M in all applications?

A: Substitution is valid only when circuit current does not exceed 480 mA and operating temperature remains above -40°C. Applications requiring higher current or lower temperature operation must use SPD73R-154M.

Q: What is the impact of different DC resistance values?

A: Lower DC resistance (760 mOhm vs. 890 mOhm) in SRR0745A-151M reduces resistive losses. At 480 mA, power dissipation difference is approximately 27 mW. Circuit thermal design must account for this variation.

Q: Are the package footprints identical?

A: Both parts share identical footprint dimensions of 7.30mm x 7.30mm. However, seated height differs: SPD73R-154M is 3.90mm maximum, while SRR0745A-151M is 4.70mm maximum. PCB clearance and component stacking must accommodate the taller substitute.

Q: What compliance certifications apply to each part?

A: Both parts are ROHS3 compliant and REACH unaffected. SRR0745A-151M additionally carries AEC-Q200 automotive qualification. Both have MSL rating of 1 (Unlimited).

Q: How do saturation current ratings affect substitution?

A: SPD73R-154M saturates at 700 mA, while SRR0745A-151M saturates at 580 mA. Applications approaching saturation current must verify the substitute can maintain inductance within required tolerance at operating current.