SPD125R-474M Equivalent & Substitute Parts

Part Overview

The SPD125R-474M is a 470 µH shielded drum core wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications with a current rating of 600 mA and maximum DC resistance of 820 mOhm. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent inductance values, compatible current ratings, and matching physical form factors are required for design flexibility, inventory management, or supply chain optimization.

Substiute Parts

SPD125R-474M

API Delevan Inc.In Stock: 669SPD125R-474M Datasheet

Current PartRFQ

B82477G2474M000

EPCOS - TDK ElectronicsIn Stock: 1497B82477G2474M000 Datasheet

SimilarRFQ

SRR1206-471KL

Bourns Inc.In Stock: 2233SRR1206-471KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SPD125R-474M are qualified based on the following criteria:

Primary Substitution Parameters:

• Inductance value: 470 µH (exact match required)
• Core type: Ferrite drum core, shielded construction
• Mounting: Surface mount, nonstandard package
• Current handling capability: Minimum 500 mA (within operational range)
• DC resistance: Maximum 970 mOhm (acceptable tolerance for equivalent performance)
• Operating temperature: -40°C minimum to 125°C maximum
• Compliance: ROHS3 compliant, REACH unaffected

The identified substitute parts B82477G2474M000 and SRR1206-471KL meet these criteria with variations in current rating, DC resistance, and physical dimensions that remain within acceptable engineering tolerances for equivalent circuit functionality.

Parameter Comparison

Engineering Selection Recommendations

SPD125R-474M (API Delevan Inc.): Primary choice for applications requiring maximum current rating of 600 mA and extended low-temperature operation to -55°C. Active product status with full ROHS3 compliance and unlimited moisture sensitivity rating.

B82477G2474M000 (EPCOS - TDK Electronics): Suitable for applications tolerating 580 mA current rating with improved DC resistance of 770 mOhm Max. Maintains identical operating temperature range and ROHS3 compliance. Slightly larger footprint (12.30mm x 12.30mm) requires PCB layout verification.

SRR1206-471KL (Bourns Inc.): Applicable for designs with 500 mA current requirement and tighter inductance tolerance (±10%). Higher DC resistance of 970 mOhm Max and minimum operating temperature of -40°C. Largest footprint (12.70mm x 12.70mm) with 6.50mm height requires board space confirmation. All parts maintain ROHS3 compliance and unlimited MSL rating.

Frequently Asked Questions (FAQ)

Q: Can B82477G2474M000 directly replace SPD125R-474M in all applications?

A: B82477G2474M000 is suitable where the circuit tolerates 580 mA current rating (20 mA reduction from original). DC resistance is lower at 770 mOhm Max, which may improve thermal performance. Physical dimensions are slightly larger (12.30mm vs 12.00mm), requiring PCB layout verification. Operating temperature range remains identical.

Q: What are the current rating implications when substituting with SRR1206-471KL?

A: SRR1206-471KL has a 500 mA current rating, representing a 100 mA reduction from the SPD125R-474M. This part is suitable only for applications where peak current does not exceed 500 mA. The saturation current is specified at 830 mA, providing design margin above the rated current.

Q: Are there PCB layout considerations when switching between these parts?

A: Yes. SPD125R-474M footprint is 12.00mm x 12.00mm x 6.00mm height. B82477G2474M000 requires 12.30mm x 12.30mm x 6.00mm. SRR1206-471KL requires 12.70mm x 12.70mm x 6.50mm. Verify available board space before substitution.

Q: Do all substitute parts meet the same compliance standards?

A: All three parts are ROHS3 compliant, REACH unaffected, and carry MSL rating of 1 (Unlimited). Operating temperature ranges differ: SPD125R-474M and B82477G2474M000 operate from -55°C to 125°C, while SRR1206-471KL operates from -40°C to 125°C.

Q: How do inductance tolerances affect circuit performance?

A: SPD125R-474M and B82477G2474M000 both specify ±20% tolerance. SRR1206-471KL specifies tighter ±10% tolerance, which may be advantageous for precision filter or resonant circuit applications where inductance accuracy is critical.