S1812-222K Equivalent & Substitute Parts Reference

Part Overview

The S1812-222K is a fixed surface mount inductor manufactured by API Delevan Inc., rated at 2.2 µH inductance with a maximum current rating of 658 mA and DC resistance of 460 mOhm. This shielded ferrite core inductor operates across the temperature range of -55°C to 125°C and is housed in a 1812 (4532 Metric) package format. The component is currently in active production status. Substitute parts are identified when equivalent electrical and mechanical specifications are maintained across the same package class, inductance value, current rating, and thermal operating range, while accounting for differences in compliance certifications and series designations.

Substiute Parts

S1812-222K

API Delevan Inc.In Stock: 1039S1812-222K Datasheet

Current PartRFQ

S1812R-222K

API Delevan Inc.In Stock: 877S1812R-222K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S1812-222K are identified based on strict equivalence of the following critical parameters:

• Inductance Value: 2.2 µH (±10% tolerance maintained)
• Current Rating: 658 mA maximum
• DC Resistance: 460 mOhm maximum
• Package Format: 1812 (4532 Metric) surface mount
• Core Type: Ferrite shielded construction
• Thermal Range: -55°C to 125°C operating temperature
• Frequency Characteristics: Q factor of 40 @ 7.9 MHz; Self-resonant frequency of 90 MHz

The S1812R-222K qualifies as a direct substitute because it maintains identical electrical performance specifications, mechanical dimensions, and thermal ratings. The primary distinction between the main part and substitute lies in series designation (S1812 versus S1812R) and compliance certifications (RoHS status and REACH compliance).

Parameter Comparison

Engineering Selection Recommendations

S1812R-222K as Primary Substitute

The S1812R-222K is electrically and mechanically equivalent to the S1812-222K across all functional parameters. Selection between these parts should be based on regulatory and compliance requirements:

• For applications requiring RoHS3 compliance: The S1812R-222K is the appropriate selection, as it meets ROHS3 compliance standards while the S1812-222K is RoHS non-compliant.

• For applications with no RoHS compliance requirement: Either part is functionally suitable. The S1812-222K may be selected based on inventory availability or cost considerations.

• For applications subject to REACH regulations: Both parts maintain REACH Unaffected status, so REACH compliance is not a differentiating factor.

Both parts maintain identical electrical performance, thermal characteristics, frequency response, and mechanical dimensions. The series designation change from S1812 to S1812R reflects manufacturing or compliance updates by API Delevan Inc. and does not indicate functional differences.

Frequently Asked Questions (FAQ)

Q: Can the S1812R-222K be used as a direct replacement for the S1812-222K in existing designs?

A: Yes. The S1812R-222K is electrically and mechanically identical to the S1812-222K. All electrical parameters, including inductance, current rating, DC resistance, frequency response, and thermal operating range are equivalent. Physical dimensions and package format are identical, allowing direct PCB footprint compatibility.

Q: What is the difference between the S1812-222K and S1812R-222K?

A: The primary difference is RoHS compliance status. The S1812R-222K is ROHS3 compliant, while the S1812-222K is RoHS non-compliant. All other specifications, including inductance value, current rating, DC resistance, core material, shielding, package dimensions, and operating temperature range are identical.

Q: Are there any performance differences between these two parts?

A: No. Both parts exhibit identical electrical performance. The Q factor at 7.9 MHz is 40 for both parts, and the self-resonant frequency is 90 MHz for both. DC resistance is 460 mOhm maximum for both parts, and current rating is 658 mA for both.

Q: Which part should I select for a new design?

A: Selection depends on regulatory requirements. If RoHS3 compliance is required, select the S1812R-222K. If RoHS compliance is not a requirement, either part is suitable. Verify compliance requirements with your design specifications and regional regulations.

Q: Are the physical dimensions identical?

A: Yes. Both parts are housed in the 1812 (4532 Metric) package with dimensions of 0.177" L x 0.126" W (4.50mm x 3.20mm) and maximum seated height of 0.134" (3.40mm). PCB footprints are identical.

Q: Can I mix S1812-222K and S1812R-222K parts in the same production batch?

A: Yes, from an electrical and mechanical standpoint. However, if your application or customer requirements specify RoHS compliance, all parts in the batch must meet that requirement. Verify compliance requirements before mixing parts from different series.

Q: What is the moisture sensitivity level for these inductors?

A: Both parts have a Moisture Sensitivity Level (MSL) of 1, which indicates unlimited moisture sensitivity. These parts do not require special moisture control during storage or handling.