SPD73R-104M Equivalent & Substitute Parts

Part Overview

The SPD73R-104M is a 100 µH shielded drum core wirewound inductor manufactured by API Delevan Inc. in surface mount nonstandard package. This component is rated for 850 mA continuous current with a maximum DC resistance of 790 mOhm and operates across the temperature range of -55°C to 125°C. The part maintains active product status with full ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Component substitution becomes necessary when supply constraints, lead time considerations, or specific design requirements necessitate alternative sourcing while maintaining functional equivalence within the defined electrical and mechanical parameter space.

Substiute Parts

SPD73R-104M

API Delevan Inc.In Stock: 1292SPD73R-104M Datasheet

Current PartRFQ

SRR0745A-101M

Bourns Inc.In Stock: 3398SRR0745A-101M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The SRR0745A-101M from Bourns Inc. qualifies as a direct substitute based on the following electrical and mechanical parameters:

Common Electrical Specifications:

• Inductance: 100 µH (matched)
• Inductance Tolerance: ±20% (matched)
• Core Material: Ferrite (matched)
• Shielding: Shielded (matched)
• Inductance Test Frequency: 1 kHz (matched)

Compatible Mechanical Specifications:

• Mounting Type: Surface Mount (matched)
• Physical Footprint: 7.30mm × 7.30mm (matched)
• Package Classification: Nonstandard Surface Mount (matched)

Compliance and Environmental:

• RoHS Status: ROHS3 Compliant (matched)
• Moisture Sensitivity Level: MSL 1 (Unlimited) (matched)
• REACH Status: REACH Unaffected (matched)
• Operating Temperature Range: -40°C to 125°C (compatible; substitute range is within upper tolerance band of main part)

The substitution remains valid within the defined parameter constraints despite differences in current rating and DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the SPD73R-104M and SRR0745A-101M maintain active product status with ROHS3 compliance and REACH unaffected designation, confirming regulatory compatibility for current and future applications. The Bourns SRR0745A-101M includes AEC-Q200 automotive qualification, providing additional assurance for automotive and high-reliability applications. Selection between the two parts depends on application-specific current and thermal dissipation requirements within the defined electrical parameter envelope. Both components employ identical inductance values and tolerance specifications across matched 1 kHz test frequency conditions, supporting direct functional substitution in most circuit configurations.

Frequently Asked Questions (FAQ)

Q: Can the SRR0745A-101M directly replace the SPD73R-104M in production? A: Yes. Both components share matching inductance (100 µH), tolerance (±20%), core material (ferrite), shielding (shielded), mounting type (surface mount), physical footprint (7.30mm × 7.30mm), and regulatory compliance (ROHS3, MSL 1). The SRR0745A-101M is qualified for applications operating at or below 700 mA continuous current.

Q: What are the key differences between these components? A: The primary differences are current rating (SPD73R-104M: 850 mA vs. SRR0745A-101M: 700 mA), DC resistance (SPD73R-104M: 790 mOhm vs. SRR0745A-101M: 450 mOhm), and temperature range (SPD73R-104M: -55°C to 125°C vs. SRR0745A-101M: -40°C to 125°C). The SRR0745A-101M features AEC-Q200 qualification.

Q: Are there package compatibility concerns when substituting? A: No. Both components employ identical surface mount nonstandard packages with matched footprints (7.30mm × 7.30mm). The SRR0745A-101M has maximum seated height of 4.70mm compared to 3.90mm for the SPD73R-104M. Verify PCB board clearance for the substitute part's increased height.

Q: Do both parts support the same operating temperature range? A: The SPD73R-104M operates from -55°C to 125°C, while the SRR0745A-101M operates from -40°C to 125°C. The substitute part supports the full upper temperature range. Applications requiring operation below -40°C require the original SPD73R-104M.

Q: What certifications and compliance standards apply to both parts? A: Both components are ROHS3 compliant, MSL 1 rated, and REACH unaffected. The SRR0745A-101M additionally carries AEC-Q200 automotive qualification. Both use identical inductance test frequency (1 kHz) and packaging (Tape & Reel).