SBT303

Frontier Electronics Corp. 667 E. COCHRAN STREET, SIMI VALLEY, CA 93065 TEL: (805) 522-9998 FAX: (805) 522-9989 E-mail: frontiersales@frontierusa.com Web: frontierusa.com SMD Balun Transformer—SBT303-series A. Electrical specifications: Part No. SBT303-11 SBT303-21 Turn Ratio 1:1 2:1 Insertion Loss 3 dB Max. @5~400MHz @5~250MHz B. Mechanical dimensions: (Unit: mm) M1 Dimension Tolerance 6.9 Max. M3 M2 0.60 ± 0.15 M3 6.9 Max. M5 M4 2.0 ± 0.30 M5 4.40 Max. 1.70 M2 M1 6 1 M4 2 M4 N1 N2 1.20 N3 4.0 4 3 5.70 Mechanical dimension Schematic Land Pattern C. Test configuration and connection: (a) SBT-203-11: (b) SBT-203-21: D. Note: RoHS compliant; for the ROHS parts, we add “-LFR” at the end of the P/N. SMD Balun Transformer SBT303-series Rev. A Jan. 01, 2006. Page: 1 of 2 Frontier Electronics Corp. 667 E. COCHRAN STREET, SIMI VALLEY, CA 93065 TEL: (805) 522-9998 FAX: (805) 522-9989 E-mail: frontiersales@frontierusa.com Web: frontierusa.com SMD Balun Transformer—SBT303-series E. Characteristic curve: S B T 3 0 3 -1 1 0.00 -1.00 -2.00 -3.00 -4.00 -5.00 -6.00 -7.00 -8.00 -9.00 -10.00 1 10 100 1000 I.L. (dB) Frequency (MHz) S B T 3 0 3 -2 1 0.00 -1.00 -2.00 -3.00 -4.00 -5.00 -6.00 -7.00 -8.00 -9.00 -10.00 1 10 100 1000 I.L. (dB) Frequency (MHz) SMD Balun Transformer SBT303-series Rev. A Jan. 01, 2006. Page: 2 of 2