Frontier Electronics Corp. 667 E. COCHRAN STREET, SIMI VALLEY, CA 93065 TEL: (805) 522-9998 FAX: (805) 522-9989 E-mail: [email protected] Web: http://www.frontierusa.com SMD Air Wound Coils—291A & 291B series A. Electrical specification Part No. Turns L (nH) Tolerance. Q (Min.) Test Freq. DCR max. (mΩ) SRF min. (GHz) I DC (A max.) 291A-01 291A-02 291A-03 291A-04 291A-05 291B-06 291B-07 291B-08 291B-09 291B-10 1 2 3 4 5 6 7 8 9 10 2.5 5.0 8.0 12.5 18.5 17.5 22.0 28.0 35.5 43.0 K K, J J, G J, G J, G J, G J, G J, G J, G J, G 145 140 140 137 132 100 102 105 112 106 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz 1.1 1.8 2.6 3.4 3.9 4.5 5.2 6.0 6.8 7.9 12.5 6.5 5.0 3.3 2.5 2.2 2.1 1.8 1.5 1.2 4 4 4 4 4 4 4 4 4 4 B. Mechanical dimensions: (Unit: mm) Series No. a b c d e 291A 291B 3.05(MAX) 3.05(MAX) 0.58±0.38 0.58±0.38 3.18(MAX) 3.18(MAX) 3.68(MAX) 6.86(MAX) 2.92±0.25 5.84±0.25 Mechanical dimension Land Pattern C. Land Pattern: (Unit: mm) Series No. a b c d e 291A 291B 4.19 7.24 3.30 3.30 1.65 4.70 2.79 2.79 1.27 1.27 D. Notes: 1. Tolerance: a. 291A-01: K = ± 10 % only. b. 291A-02: J = ± 5 % or K = ± 10 %. c. 291A-03 through 291A-05 and for 291B-06 through 291B-10: J = ± 5 % or G = ± 2 % 2. Inductance & Q measured on the HP4291B with HP16193 test fixture. 3. SRF measured on the HP8720D or HP8753E. 4. Operating temp. : -40ºC TO +125ºC. 5. For Temperature Rise: 15ºC. 6. Inductance Range: 291A & 291B: From 2.5nH to 43.0nH. (@ 25ºC.) 7. Equivalent to Coilcraft’s “Mini Spring” Air Core Inductor. 8. RoHS compliant. SMD Air Coil: P/N 291A & 291B Series Rev. B Feb. 01 2007. 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: [email protected] Web: http://www.frontierusa.com SMD Air Wound Coils—291A & 291B series E. Characteristic curve: 1. L vs. Frequency: 150 25 Inductance (nH) Inductance (nH) 291A-05 20 291A-04 15 291A-03 10 291A-02 5 291B-10 100 291B-09 291B-08 50 291B-07 291B-06 291A-01 0 0 10 100 1000 1000 10 Frequency (MHz) 100 1000 10000 Frequency (MHz) 291A Series 291B Series 2. Typical Q vs. Frequency: 210 180 150 140 291A-01 291A-02 291A-03 291A-04 291A-05 291B-06 120 100 120 Q 291B-09 291B-10 80 Q 90 291B-08 60 60 40 30 20 0 100 291B-07 0 1000 10000 1000 Frequency (MHz) Frequency (MHz) 291A Series SMD Air Coil: P/N 291A & 291B Series 100 291B Series Rev. B Feb. 01 2007. Page: 2 of 2