S1210-122K Equivalent & Substitute Parts

Part Overview

The S1210-122K is a fixed surface mount inductor manufactured by API Delevan Inc., designed for applications requiring 1.2 µH inductance with a current rating of 574 mA. This shielded ferrite core inductor operates across a temperature range of -55°C to 125°C and features a maximum DC resistance of 490mOhm. The part is currently active in production and available in standard tape and reel packaging for automated assembly processes.

Substitute parts become necessary when the original part number experiences extended lead times, inventory constraints, or when design requirements mandate compliance with specific regulatory standards such as RoHS3.

Substiute Parts

S1210-122K

API Delevan Inc.In Stock: 809S1210-122K Datasheet

Current PartRFQ

S1210R-122K

API Delevan Inc.In Stock: 7091S1210R-122K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S1210-122K is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Inductance value: 1.2 µH
• Inductance tolerance: ±10%
• Current rating: 574 mA minimum
• DC resistance: 490mOhm maximum
• Q factor: 40 @ 7.9 MHz
• Self resonant frequency: 120 MHz

Mechanical & Physical Parameters:

• Package / Case: 1210 (3225 Metric)
• Mounting type: Surface Mount
• Core material: Ferrite
• Shielding: Shielded

Environmental & Compliance Parameters:

• Operating temperature range: -55°C to 125°C
• Moisture sensitivity level: 1 (Unlimited)
• REACH status: REACH Unaffected

Substitute parts must maintain identical electrical performance, physical dimensions, and environmental ratings. Compliance certifications (RoHS status) do not disqualify substitution but represent an additional selection criterion for specific applications.

Parameter Comparison

Engineering Selection Recommendations

S1210R-122K as Primary Substitute:

The S1210R-122K is a direct electrical and mechanical equivalent to the S1210-122K. All critical performance parameters—inductance, current rating, DC resistance, frequency response, and thermal operating range—are identical. Both parts share the same 1210 (3225 Metric) package footprint and surface mount configuration, ensuring PCB layout compatibility without redesign.

The primary distinction between these parts is regulatory compliance status. The S1210R-122K carries ROHS3 certification, while the S1210-122K is RoHS non-compliant. For applications subject to RoHS3 requirements or where future compliance is mandated, the S1210R-122K is the appropriate selection. For applications without RoHS3 constraints, either part functions identically.

Inventory availability favors the S1210R-122K, with 7047 units in stock compared to 748 units of the S1210-122K, providing superior supply chain reliability.

Both parts are manufactured by API Delevan Inc. and maintain active production status, ensuring long-term availability and consistent quality.

Frequently Asked Questions (FAQ)

Q: Can S1210R-122K replace S1210-122K in existing designs without PCB modification?

A: Yes. Both parts are identical in electrical performance and physical dimensions. The 1210 (3225 Metric) package footprint, lead spacing, and height are equivalent. No PCB layout changes are required.

Q: What is the difference between S1210-122K and S1210R-122K?

A: The parts are electrically and mechanically identical. The S1210R-122K carries ROHS3 compliance certification, while the S1210-122K does not. The "R" designation in the part number indicates RoHS3 compliance.

Q: Are there any performance differences in inductance, current handling, or frequency response?

A: No. Both parts deliver 1.2 µH inductance with ±10% tolerance, 574 mA current rating, 490mOhm maximum DC resistance, and 40 Q factor at 7.9 MHz. Frequency response and thermal characteristics are identical.

Q: Which part should be selected for new designs?

A: For new designs subject to RoHS3 regulations or where future compliance is anticipated, specify S1210R-122K. For applications without RoHS3 requirements, either part is acceptable. The S1210R-122K offers superior inventory availability.

Q: Are both parts available in tape and reel packaging?

A: Yes. Both S1210-122K and S1210R-122K are supplied in Tape & Reel (TR) packaging suitable for automated pick-and-place assembly.

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

A: Both parts carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.

Q: Do these parts require any special handling or storage conditions?

A: No special handling is required. MSL 1 classification means standard storage conditions are acceptable without desiccant or controlled humidity environments.