SRN3010-220M Equivalent & Substitute Parts

Part Overview

The SRN3010-220M is a 22 µH semi-shielded drum core wirewound inductor manufactured by Bourns Inc., rated for 700 mA continuous current with a maximum DC resistance of 936 mOhm. This component is designed for surface mount applications in the 1212 (3030 Metric) package format. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications.

Substiute Parts

SRN3010-220M

Bourns Inc.In Stock: 1083SRN3010-220M Datasheet

Current PartRFQ

SRN3010C-220M

Bourns Inc.In Stock: 3740SRN3010C-220M Datasheet

MFR RecommendedRFQ

ASPI-0310FS-220M-T2

Abracon LLCIn Stock: 828ASPI-0310FS-220M-T2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SRN3010-220M is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 22 µH ±20%
• Current rating: 700 mA minimum
• Package format: 1212 (3030 Metric) surface mount
• Physical dimensions: 3.00mm × 3.00mm × 1.00mm maximum height
• Operating temperature range: -40°C to 125°C minimum
• RoHS3 compliance and MSL Level 1 rating

Secondary Compatibility Factors:

• DC resistance within acceptable circuit performance limits
• Saturation current rating adequate for application requirements
• Core material and shielding configuration suitable for EMI environment

Two substitute parts meet these criteria with varying degrees of parameter alignment.

Parameter Comparison

Engineering Selection Recommendations

SRN3010C-220M (Bourns Inc.) - Primary Substitute

The SRN3010C-220M is the manufacturer-recommended equivalent. It maintains identical electrical specifications for inductance, current rating, and operating temperature range. The DC resistance is marginally lower at 912 mOhm versus 936 mOhm, and saturation current is improved at 500 mA. The part is active in production with full RoHS3 compliance and MSL Level 1 rating. Physical footprint and package format are identical. This part is the direct functional replacement for the obsolete SRN3010-220M.

ASPI-0310FS-220M-T2 (Abracon LLC) - Alternative Substitute

The ASPI-0310FS-220M-T2 provides equivalent inductance, current rating, and physical dimensions. DC resistance is superior at 780 mOhm. However, this part uses a fully shielded configuration versus semi-shielded, employs Nickel Zinc ferrite core material instead of standard ferrite, and has a nonstandard package designation. The operating temperature range is slightly reduced (-25°C to 120°C). This part is suitable only when the shielded configuration and lower DCR are circuit requirements, and when the reduced lower temperature limit is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the SRN3010C-220M directly replace the SRN3010-220M without circuit modification?

A: Yes. The SRN3010C-220M is the manufacturer-recommended equivalent with identical inductance, current rating, tolerance, operating temperature range, and physical package. No circuit modifications are required.

Q: What is the difference between semi-shielded and fully shielded configurations?

A: Semi-shielded inductors provide partial EMI containment, while fully shielded inductors provide complete magnetic field containment. The choice depends on circuit layout and EMI requirements. The ASPI-0310FS-220M-T2 is fully shielded, whereas the original part and primary substitute are semi-shielded.

Q: Why is the ASPI-0310FS-220M-T2 listed as a "similar" rather than "equivalent" substitute?

A: The ASPI-0310FS-220M-T2 differs in shielding type, core material composition, and package designation. While electrical performance is compatible, these differences may affect circuit behavior in specific applications. Verification is necessary before implementation in production designs.

Q: Are all three parts compatible with the same PCB footprint?

A: The SRN3010-220M and SRN3010C-220M share identical physical dimensions and are footprint-compatible. The ASPI-0310FS-220M-T2 has the same external dimensions but uses a nonstandard package designation, requiring verification of PCB land pattern compatibility.

Q: What is the significance of the improved saturation current in the SRN3010C-220M?

A: The SRN3010C-220M has a saturation current of 500 mA versus 400 mA in the original part. This provides additional margin before inductance degradation occurs under transient current conditions, improving circuit stability.

Q: Are there temperature range limitations when substituting the ASPI-0310FS-220M-T2?

A: The ASPI-0310FS-220M-T2 operates from -25°C to 120°C, compared to -40°C to 125°C for the original part. Applications requiring operation below -25°C or above 120°C cannot use this substitute.