SPD73R-223M Equivalent & Substitute Parts

Part Overview

The SPD73R-223M is a 22 µH shielded drum core wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications requiring moderate current handling and low DC resistance. This component operates across the industrial temperature range of -55°C to 125°C and is ROHS3 compliant. The part is currently active in production with 837 pieces available in inventory. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to supply constraints, lead time considerations, or design flexibility needs.

Substiute Parts

SPD73R-223M

API Delevan Inc.In Stock: 933SPD73R-223M Datasheet

Current PartRFQ

SRR0745A-220M

Bourns Inc.In Stock: 6287SRR0745A-220M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPD73R-223M is determined by strict alignment of the following critical parameters:

Electrical Parameters:

• Inductance value: 22 µH (exact match required)
• Inductance tolerance: ±20% (must be equal or tighter)
• Current rating: minimum 1.75 A (equal or higher acceptable)
• DC resistance: maximum 190 mOhm (lower values acceptable; higher values not acceptable)
• Core material: Ferrite shielded construction (required for EMI performance)

Mechanical Parameters:

• Mounting type: Surface Mount (required)
• Package footprint: 7.30 mm × 7.30 mm (exact match required for PCB compatibility)
• Height constraint: 3.90 mm maximum seated height (critical for board clearance)

Compliance Parameters:

• RoHS3 compliance (required for regulatory alignment)
• Moisture Sensitivity Level 1 (required for storage and handling compatibility)

The substitute part SRR0745A-220M from Bourns Inc. meets all critical electrical and mechanical substitution criteria. The part maintains identical inductance, tolerance, core material, shielding, and footprint dimensions. While the DC resistance is lower (96 mOhm vs. 190 mOhm maximum) and current rating is slightly lower (1.65 A vs. 1.75 A), these variations remain within acceptable substitution parameters for equivalent circuit performance.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (SPD73R-223M): The SPD73R-223M remains the preferred selection when available. This part is actively manufactured by API Delevan Inc., maintains full compliance with ROHS3 and REACH requirements, and operates across the extended temperature range of -55°C to 125°C. Current inventory of 837 pieces supports immediate procurement. The part carries AEC-Q200 automotive-grade reliability ratings where applicable.

Substitute Part Selection (SRR0745A-220M): The SRR0745A-220M from Bourns Inc. is an acceptable substitute when SPD73R-223M availability is constrained. This part maintains identical inductance, tolerance, core material, shielding, and footprint specifications. Both parts are ROHS3 compliant and carry MSL 1 moisture sensitivity ratings. The substitute part is actively produced with significantly higher inventory availability (6200 pieces).

Critical Considerations for Substitution:

The SRR0745A-220M exhibits three parameter variations that require engineering evaluation:

1. Operating Temperature Range: The substitute operates from -40°C to 125°C, compared to the primary part's -55°C to 125°C. Applications requiring operation below -40°C must use the SPD73R-223M.

2. DC Resistance: The substitute exhibits lower DC resistance (96 mOhm maximum vs. 190 mOhm maximum). This improvement reduces power dissipation and heat generation, which is beneficial for thermal performance. No circuit redesign is required.

3. Seated Height: The substitute is 0.80 mm taller (4.70 mm vs. 3.90 mm). PCB layout clearance must be verified to ensure no mechanical interference with adjacent components or board constraints.

Both parts are suitable for applications operating within the -40°C to 125°C temperature window with adequate board clearance for the increased height of the substitute.

Frequently Asked Questions (FAQ)

Q: Can SRR0745A-220M be used as a direct replacement for SPD73R-223M in all applications?

A: The SRR0745A-220M is electrically compatible for applications operating between -40°C and 125°C. Applications requiring operation below -40°C must use the SPD73R-223M. Additionally, PCB layout must accommodate the 0.80 mm height increase (4.70 mm vs. 3.90 mm seated height).

Q: What is the impact of the lower DC resistance in the substitute part?

A: The lower DC resistance (96 mOhm vs. 190 mOhm) of the SRR0745A-220M reduces resistive power dissipation. For a given current, this results in lower heat generation and improved thermal performance. No circuit modifications are required; this is a beneficial characteristic.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both SPD73R-223M and SRR0745A-220M are ROHS3 compliant and REACH unaffected. Both carry MSL 1 (unlimited) moisture sensitivity ratings, ensuring equivalent handling and storage requirements.

Q: What is the significance of the identical footprint dimensions?

A: Both parts share identical footprint dimensions (7.30 mm × 7.30 mm), ensuring PCB pad compatibility without layout redesign. However, the height difference (3.90 mm vs. 4.70 mm) must be evaluated for component clearance in confined spaces.

Q: Why does the substitute part have a lower current rating?

A: The SRR0745A-220M is rated for 1.65 A continuous current, compared to 1.75 A for the SPD73R-223M. Both parts share identical saturation current ratings (1.75 A). For applications requiring continuous current above 1.65 A, the SPD73R-223M is required. For applications operating at or below 1.65 A, the substitute is suitable.

Q: Are there any certifications or ratings that differ between these parts?

A: The SRR0745A-220M carries AEC-Q200 automotive-grade reliability certification. Both parts maintain equivalent RoHS3 and REACH compliance. The primary difference is the operating temperature range, where the SPD73R-223M extends to -55°C minimum.

Q: What inventory considerations should guide part selection?

A: The SPD73R-223M has 837 pieces in current inventory. The SRR0745A-220M has 6200 pieces available. For applications with extended lead time requirements or high-volume procurement, the substitute part offers superior availability.