SD10-220-R Equivalent & Substitute Parts Reference

Part Overview

The SD10-220-R is a 22 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is designed for applications requiring fixed inductance with moderate current handling capability. The part is classified as Active status and is RoHS Compliant, making it suitable for modern electronic assemblies. Substitute parts are identified when original inventory becomes unavailable or when design requirements permit alternative specifications within acceptable electrical and mechanical tolerances.

Substiute Parts

SD10-220-R

Eaton - Electronics DivisionIn Stock: 809SD10-220-R Datasheet

Current PartRFQ

SRR4011-220YL

Bourns Inc.In Stock: 2655SRR4011-220YL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SD10-220-R is permissible when the following electrical and mechanical parameters align with circuit requirements:

Critical Matching Parameters:

• Inductance value: 22 µH (tolerance stack must be evaluated in circuit context)
• Core type: Ferrite drum core, wirewound construction
• Shielding: Shielded configuration
• Mounting: Surface mount technology
• Current handling: Rated current and saturation current must meet or exceed application demands

Acceptable Variation Parameters:

• DC Resistance (DCR): Substitute parts may have lower DCR values, which reduce power dissipation
• Current Rating: Substitute parts with higher current ratings provide design margin
• Inductance Tolerance: Wider tolerances (±30%) are acceptable if circuit design accommodates the tolerance band
• Operating Temperature Range: Extended temperature ranges provide additional operational margin
• Physical dimensions: Minor variations in footprint and height are acceptable if PCB layout permits

The SRR4011-220YL from Bourns Inc. qualifies as a substitute based on matching inductance, core material, shielding, and surface mount configuration, with improvements in current rating and DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

SD10-220-R Selection Criteria:

• Primary choice when original part number is available and inventory is confirmed
• Preferred for applications with strict height constraints (1.00 mm maximum seated height)
• Suitable for operating environments limited to -40°C to 85°C range
• Appropriate when DC resistance specification of 671.8 mOhm is acceptable

SRR4011-220YL Selection Criteria:

• Substitute when SD10-220-R inventory is unavailable
• Preferred for applications requiring lower DC resistance (580 mOhm maximum) to reduce power dissipation
• Suitable for circuits requiring higher current margins (600 mA rating vs. 498 mA)
• Appropriate for extended temperature operation up to 125°C
• Acceptable when PCB layout accommodates the 1.30 mm seated height and 4.80 x 4.80 mm footprint

Both parts maintain RoHS compliance and MSL Level 1 rating. The SRR4011-220YL provides improved electrical performance characteristics while maintaining functional equivalence for the 22 µH inductance requirement.

Frequently Asked Questions (FAQ)

Q: Can the SRR4011-220YL directly replace the SD10-220-R on existing PCBs?

A: Physical compatibility depends on PCB layout. The SRR4011-220YL has a smaller footprint (4.80 x 4.80 mm vs. 5.20 x 5.20 mm) and greater height (1.30 mm vs. 1.00 mm). Verify that the PCB pad pattern and clearance above the component accommodate these dimensions before substitution.

Q: What is the impact of the ±30% tolerance on the SRR4011-220YL versus ±20% on the SD10-220-R?

A: The wider tolerance on the substitute part means the actual inductance value may deviate further from the nominal 22 µH specification. Circuit designs must accommodate the full tolerance band (15.4 µH to 28.6 µH for the substitute) to ensure functional performance.

Q: Does the lower DC resistance of the SRR4011-220YL affect circuit operation?

A: Lower DC resistance (580 mOhm vs. 671.8 mOhm) reduces resistive losses and heat generation. This is generally beneficial and does not negatively impact circuit function. Verify that the circuit design does not depend on the specific resistance value of the original part.

Q: Are both parts suitable for high-temperature applications?

A: The SD10-220-R operates to 85°C maximum. The SRR4011-220YL extends to 125°C. For applications exceeding 85°C, the SRR4011-220YL is the appropriate selection.

Q: What is the significance of the higher saturation current rating on the SRR4011-220YL?

A: The SRR4011-220YL has a saturation current of 570 mA compared to 506 mA on the SD10-220-R. This provides additional margin before the inductor enters saturation, where inductance degrades. Applications with current peaks near the saturation threshold benefit from the substitute part's higher rating.

Q: Are there any compliance differences between the two parts?

A: Both parts are RoHS compliant. The SRR4011-220YL carries ROHS3 compliance and REACH Unaffected status, indicating compliance with the most current regulatory requirements. Both maintain MSL Level 1 (Unlimited) moisture sensitivity rating.