291B-06

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: http://www.frontierusa.com SMD Air Wound Coils—291A & 291B series A. Electrical specification Part No. 291A-01 291A-02 291A-03 291A-04 291A-05 291B-06 291B-07 291B-08 291B-09 291B-10 Turns 1 2 3 4 5 6 7 8 9 10 L (nH) 2.5 5.0 8.0 12.5 18.5 17.5 22.0 28.0 35.5 43.0 Tolerance. K K, J J, G J, G J, G J, G J, G J, G J, G J, G Q (Min.) 145 140 140 137 132 100 102 105 112 106 Test Freq. 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz 150 MHz DCR max. (mΩ) 1.1 1.8 2.6 3.4 3.9 4.5 5.2 6.0 6.8 7.9 SRF min. (GHz) 12.5 6.5 5.0 3.3 2.5 2.2 2.1 1.8 1.5 1.2 I DC (A max.) 4 4 4 4 4 4 4 4 4 4 B. Mechanical dimensions: (Unit: mm) Series No. 291A 291B a 3.05(MAX) 3.05(MAX) b 0.58±0.38 0.58±0.38 c 3.18(MAX) 3.18(MAX) d 3.68(MAX) 6.86(MAX) e 2.92±0.25 5.84±0.25 Mechanical dimension Land Pattern C. Land Pattern: (Unit: mm) Series No. 291A 291B a 4.19 7.24 b 3.30 3.30 c 1.65 4.70 d 2.79 2.79 e 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: frontiersales@frontierusa.com Web: http://www.frontierusa.com SMD Air Wound Coils—291A & 291B series E. Characteristic curve: 1. L vs. Frequency: 25 150 Inductance (nH) 20 291A-05 291A-04 291B-10 Inductance (nH) 100 15 10 5 0 10 100 1000 291B-09 291A-03 291B-08 50 291B-07 291B-06 291A-02 291A-01 0 1000 10 100 1000 10000 Frequency (MHz) Frequency (MHz) 291B Series 291A Series 2. Typical Q vs. Frequency: 210 180 150 120 291A-01 291A-02 291A-03 291A-04 291A-05 140 291B-06 120 100 80 291B-09 291B-10 291B-07 291B-08 Q 90 60 30 0 100 Q 60 40 20 0 1000 10000 100 1000 Frequency (M z) H 291A Series Frequency (MHz) 291B Series SMD Air Coil: P/N 291A & 291B Series Rev. B Feb. 01 2007. Page: 2 of 2