S1210-101K Equivalent & Substitute Parts

Part Overview

The S1210-101K is a fixed shielded inductor manufactured by API Delevan Inc., rated at 100 nH inductance with a maximum current rating of 1.131 A and 150 mOhm DC resistance. This component is designed for surface mount applications in the 1210 (3225 Metric) package format. The part is currently in active production status with 874 pieces available in new original inventory. Substitute parts are identified when electrical specifications, mechanical dimensions, and package compatibility remain within the allowed parameters for this inductor category.

Substiute Parts

S1210-101K

API Delevan Inc.In Stock: 979S1210-101K Datasheet

Current PartRFQ

S1210R-101K

API Delevan Inc.In Stock: 2970S1210R-101K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S1210-101K is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Inductance value (100 nH), inductance tolerance (±10%), current rating (1.131 A minimum), and DC resistance (150 mOhm maximum) must be identical or superior.

Mechanical Compatibility: Package designation (1210 / 3225 Metric), physical dimensions (0.128" L x 0.095" W), and maximum seated height (0.101") must match exactly to ensure PCB footprint compatibility.

Functional Characteristics: Shielding type (Shielded), core material (Iron), Q factor at 25 MHz (40), and self-resonant frequency (375 MHz) must remain constant.

Environmental Ratings: Operating temperature range (-55°C to 125°C) and moisture sensitivity level (MSL 1) must be maintained.

The S1210R-101K meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The S1210R-101K is a direct electrical and mechanical equivalent to the S1210-101K. Both parts share identical inductance, current rating, DC resistance, and physical package specifications. The primary distinction is regulatory compliance status: the S1210R-101K is ROHS3 compliant, while the S1210-101K is RoHS non-compliant. Selection between these parts should be based on project-specific regulatory requirements and supply chain availability. The S1210R-101K offers higher inventory availability (2950 pieces versus 874 pieces) and meets current environmental compliance standards for applications requiring RoHS certification.

Frequently Asked Questions (FAQ)

Q: Can the S1210R-101K be used as a direct replacement for the S1210-101K in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters including inductance (100 nH), current rating (1.131 A), DC resistance (150 mOhm), and package dimensions (1210 / 3225 Metric). PCB footprints and circuit performance will be equivalent.

Q: What is the difference between the S1210-101K and S1210R-101K?

A: The S1210R-101K is ROHS3 compliant, while the S1210-101K is RoHS non-compliant. All electrical specifications and mechanical dimensions are identical. The "R" designation in the part number indicates RoHS compliance.

Q: Are there any thermal or frequency performance differences between these parts?

A: No. Both parts operate across the same temperature range (-55°C to 125°C), maintain identical Q factor (40 @ 25 MHz), and share the same self-resonant frequency (375 MHz).

Q: Which part should be selected for new designs?

A: For new designs subject to RoHS regulations or environmental compliance requirements, the S1210R-101K is the appropriate selection. For legacy applications without RoHS mandates, either part is functionally equivalent.

Q: Is the 1210 package compatible with standard 0805 or 0603 footprints?

A: No. The 1210 (3225 Metric) package has specific dimensions (0.128" L x 0.095" W) and requires a dedicated PCB footprint. It is not compatible with smaller package formats.