1206HS-331EKTS Equivalent & Substitute Parts

Part Overview

The 1206HS-331EKTS is a 330 nH unshielded drum core wirewound inductor manufactured by Delta Electronics/Components. This surface mount component is rated for 590 mA continuous current with a DC resistance of 620 mOhm and operates across the temperature range of -40°C to 125°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

1206HS-331EKTS

Delta Electronics/ComponentsIn Stock: 11161206HS-331EKTS Datasheet

Current PartRFQ

LQH31MNR33K03L

Murata ElectronicsIn Stock: 748LQH31MNR33K03L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1206HS-331EKTS is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 nH (±10% tolerance)
• Package format: 1206 (3216 Metric) surface mount
• Unshielded configuration
• Wirewound drum core construction

Secondary Compatibility Factors:

• Current rating must meet or exceed application requirements
• DC resistance must be compatible with circuit performance
• Operating temperature range must encompass application conditions
• RoHS3 compliance and MSL rating must align with manufacturing standards

The substitute part LQH31MNR33K03L matches the primary criteria of inductance value, package size, and unshielded construction. However, differences exist in current rating, DC resistance, core material, and operating temperature range that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The LQH31MNR33K03L is an active product from Murata Electronics and represents a viable substitute for the obsolete 1206HS-331EKTS based on matching inductance value and package format. Both components are ROHS3 compliant with MSL rating of 1, ensuring compatibility with standard manufacturing and storage requirements.

Critical Limitations:

The substitute part exhibits a reduced current rating of 230 mA compared to the main part's 590 mA specification. Applications requiring the full 590 mA current capacity cannot use this substitute without circuit redesign or parallel configuration. The operating temperature maximum of 85°C is also lower than the main part's 125°C rating, restricting use in high-temperature environments.

Core Material Difference:

The main part uses ceramic core material while the substitute employs ferrite core material. This difference affects frequency response characteristics and Q factor performance. The substitute's Q factor of 30 @ 25MHz differs from the main part's 45 @ 150MHz, indicating different frequency response profiles.

Compliance Status:

Both components maintain ROHS3 compliance and REACH unaffected status, supporting use in regulated manufacturing environments. The substitute's active product status ensures ongoing availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the LQH31MNR33K03L directly replace the 1206HS-331EKTS in all applications?

A: Direct replacement is limited to applications where the circuit current requirement does not exceed 230 mA and the maximum operating temperature does not exceed 85°C. The 1206HS-331EKTS is rated for 590 mA and operates to 125°C, providing higher performance margins. Applications requiring these higher specifications require alternative solutions.

Q: What is the significance of the core material difference between ceramic and ferrite?

A: Core material affects inductor performance across the frequency spectrum. Ceramic core inductors typically exhibit different Q factor and self-resonant frequency characteristics compared to ferrite core inductors. The 1206HS-331EKTS ceramic core provides a self-resonant frequency of 650 MHz, while the LQH31MNR33K03L ferrite core provides 250 MHz. Circuit frequency response requirements must be evaluated against these differences.

Q: Are both components suitable for automated assembly?

A: Both components are surface mount devices in 1206 (3216 Metric) package format with MSL rating of 1 (unlimited moisture sensitivity level). Both are compatible with standard pick-and-place assembly equipment and reflow soldering processes. The LQH31MNR33K03L is supplied in Tape & Reel packaging, supporting automated handling.

Q: What is the impact of the DC resistance difference?

A: The LQH31MNR33K03L exhibits lower DC resistance of 450 mOhm compared to the main part's 620 mOhm. Lower DC resistance reduces resistive losses in the inductor, resulting in improved efficiency. However, this difference must be evaluated within the context of the reduced current rating and specific circuit requirements.

Q: How should I proceed if my application requires the full 590 mA current rating?

A: Applications requiring 590 mA current capacity cannot use the LQH31MNR33K03L as a direct substitute. Alternative approaches include identifying other active 330 nH inductors with higher current ratings in the same package format, or consulting with component suppliers for equivalent alternatives from other manufacturers.

Q: Is the temperature range difference a critical factor?

A: The operating temperature range difference is application-dependent. If your circuit operates within the -40°C to 85°C range, the LQH31MNR33K03L is suitable. Applications requiring operation above 85°C or at the full 125°C upper limit of the main part require alternative components.