Frontier Electronics

RoHS Compliant   \\ SMD Air wound Coils (Square)

Surface Mount (SMD) Square Air Wound Coils

Square Coil

Frontier has one of the widest SMD Square Air Wound Coil offerings in the industry. Our SMD air coils come tape and reeled and facilitate placement by pick and place machines. Unlike some of our competitors, our coils retain full adjustability (no modification of the coil to facilitate pick and place). We offer from 36AWG and thicker wire, single turn and up.





The radius of a round coil should equal 1/2 of the square coil’s side length to achieve the same inductance value. The inner section area of the square coil is lager than that of the round coil, so the square coil’s number of turns (N) would be less than the round coil's for both coils to have the same inductance value.

Square Coil




Square coil’s C (capacitance) is lower than the C of a comparable round coil and the SRF value for a Square Coil is higher than the round coil’s. This makes our LSQ Square Coil series ideal for high frequency operation.



Series Inductance Current SRF RoHS
LSQ0706A4.7 nH ~ 8.2 nH0.9 A3.0 GHzYES
LSQ0707A6.2 nH ~ 12.0 nH2.0 A3.0 GHzYES
LSQ0806A5.5 nH ~ 19.4 nH2.9 A4.0 GHz ~ 5.2 GHzYES
LSQ0807A6.9 nH ~ 22.0 nH2.7 A3.5 GHz ~ 4.6 GHzYES
LSQ0908A8.1 nH ~ 33.0 nH4.4 A2.5 GHz ~ 5.2 GHzYES
LSQ1111A27.0 nH ~ 47.0 nH4.4 A ~ 5.5 A2.2 GHz ~ 2.6 GhzYES
LSQ1515A47.0 nH ~ 82.0 nH4.9 A ~ 5.6 A1.79 GHz ~ 2.13 GHzYES
LSQ2222A90.0 nH ~ 300.0 nH3.7 A ~ 5.7 A0.72 GHz ~ 1.15 GHzYES
LSQ2929A330.0 nH ~ 500.0 nH4.2 A ~ 4.7 A0.5 GHz ~ 0.66 GHzYES

Our standard parts are listed above. However, if you need different specifications please

Email us your specifications and/or drawing