S1812-224K Equivalent & Substitute Parts Reference

Part Overview

The S1812-224K is a fixed shielded inductor manufactured by API Delevan Inc., rated at 220 µH inductance with a maximum current rating of 149 mA and 9 Ohm maximum DC resistance. This component is designed for surface mount applications in the 1812 (4532 Metric) package format. The part is currently in active production status with 968 pieces available in new original inventory. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same package specification, allowing for component interchangeability in circuit designs where specific packaging or compliance requirements differ.

Substiute Parts

S1812-224K

API Delevan Inc.In Stock: 989S1812-224K Datasheet

Current PartRFQ

S1812R-224K

DelevanIn Stock: 1418S1812R-224K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S1812-224K are identified based on strict equivalence of electrical and mechanical parameters. The substitution criteria are:

• Inductance Value: 220 µH with ±10% tolerance
• Current Rating: 149 mA minimum
• DC Resistance: 9 Ohm maximum
• Core Material: Ferrite shielded construction
• Package Specification: 1812 (4532 Metric) surface mount
• Physical Dimensions: 0.177" L x 0.126" W with maximum seated height of 0.134"
• Operating Temperature Range: -55°C ~ 125°C
• Frequency Characteristics: Q @ 790 kHz and self-resonant frequency at 4.2 MHz

Parts meeting all these parameters are classified as direct electrical and mechanical equivalents. Packaging format variations (Tape & Reel versus Cut Tape) do not affect functional equivalence but may influence procurement and assembly processes.

Parameter Comparison

Engineering Selection Recommendations

S1812-224K is suitable for applications where RoHS non-compliant components are acceptable and Tape & Reel packaging is required for automated assembly processes. This part maintains active production status with established inventory availability.

S1812R-224K is the appropriate selection for applications requiring ROHS3 compliance. This substitute maintains identical electrical and mechanical specifications while offering alternative packaging options through Cut Tape and Digi-Reel® formats. Both parts share equivalent performance characteristics across all critical parameters including inductance, current rating, DC resistance, frequency response, and operating temperature range.

The choice between these parts is determined by compliance requirements and packaging format preferences rather than electrical performance differences.

Frequently Asked Questions (FAQ)

Q: Are S1812-224K and S1812R-224K electrically interchangeable?

A: Yes. Both parts maintain identical inductance (220 µH ±10%), current rating (149 mA), DC resistance (9 Ohm maximum), core material (ferrite shielded), frequency characteristics (Q @ 790 kHz and 4.2 MHz self-resonant frequency), and operating temperature range (-55°C ~ 125°C). Electrical performance is equivalent.

Q: What is the primary difference between these parts?

A: The primary differences are RoHS compliance status and packaging format. S1812-224K is RoHS non-compliant and supplied in Tape & Reel format. S1812R-224K is ROHS3 compliant and available in Cut Tape and Digi-Reel® packaging options.

Q: Can S1812R-224K replace S1812-224K in existing designs?

A: Yes, provided that RoHS3 compliance is acceptable for the application. All electrical and mechanical parameters are identical, and both parts use the same 1812 (4532 Metric) surface mount package with matching physical dimensions and height specifications.

Q: Does packaging format affect circuit performance?

A: No. Packaging format (Tape & Reel versus Cut Tape) affects procurement and assembly logistics only. The component itself and its electrical characteristics remain unchanged.

Q: Are there any temperature or frequency limitations when substituting?

A: No. Both parts operate across the identical temperature range (-55°C ~ 125°C) and maintain the same frequency response characteristics. Substitution does not introduce thermal or frequency-related constraints.

Q: What is the moisture sensitivity level for both parts?

A: Both S1812-224K and S1812R-224K have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.