0402HS-121EJTS

Fixed Inductors Overview

The 0402HS-121EJTS is a fixed surface-mount inductor from Delta Electronics/Components, designed for high-frequency applications. It features an unshielded drum core and wirewound construction with a ceramic magnetic core. The component provides an inductance of 120 nH with a tolerance of ±5%. It has a DC resistance (DCR) of 2.66 Ohms and a rated current of 50 mA. The Q factor is 20 at 250 MHz, with a self-resonant frequency of 1.8 GHz. It operates within a temperature range of -40°C to 125°C and is available in the 0402 (1005 Metric) package.

Fixed Inductors Feature Summary

• Unshielded drum core wirewound design suitable for RF circuits
• High self-resonant frequency of 1.8 GHz for signal integrity
• Ceramic magnetic core material for stable performance

Fixed Inductors Applications

• RF filtering in communication modules
• Impedance matching networks
• Signal processing circuits requiring small form factor

Fixed Inductors Procurement Notes

Verify the specific ordering suffix 'EJTS' against the manufacturer's official datasheet to ensure correct tolerance and packaging specifications. Confirm that the RoHS3 compliance status aligns with project environmental requirements. Check the moisture sensitivity level (MSL 1) handling procedures during assembly to prevent damage. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Fixed Inductors Selection Notes

Select this component when a compact 0402 footprint is required for low-inductance RF applications. The 50 mA current rating limits its use to low-power signal paths rather than power delivery. Consider the 2.66 Ohm DCR impact on circuit efficiency if used in sensitive analog sections. Compare the 1.8 GHz self-resonant frequency against the operating bandwidth to ensure adequate performance margins.

Fixed Inductors Part Context

This part belongs to the 0402HS series of fixed inductors from Delta Electronics/Components. The series offers various inductance values in the standard 0402 package size. The HS designation typically indicates specific performance characteristics regarding high-frequency response and thermal stability compared to other series variants within the manufacturer's portfolio.

Fixed Inductors Replacement Considerations

Direct substitutes must match the 120 nH value, 0402 package dimensions, and similar electrical parameters such as DCR and current rating. Verify that alternative components maintain comparable self-resonant frequencies and Q factors for RF compatibility. Cross-reference pinout and polarity if applicable, though this is a passive component.