ENGINEERING BULLETIN SG-207E Sprague-Goodman Supercedes SG-207D MICROWAVE SAPPHIRE PISTONCAP TRIMMER CAPACITORS FEATURES Sapphire dielectric Very high Q at UHF and microwave frequencies Subminiature smallest PISTONCAP types Choice of 2 configurations and 6 mounting styles to suit all RF structures Designed to meet MIL-C-14409D Precision high resolution adjustment: 127 threads per inch for GU series, GW series and GN 1R2 169 threads per inch for GN 2R5 to GN 8R0 Extremely stable over temperature, frequency, voltage, etc. APPLICATIONS Stable oscillators, frequency multipliers, filters, tuning cavities, coupling, etc. SPECIFICATIONS Operating temperature: -55C to +125C Rated voltage: 500 VDC Torque: 0.1 to 1.0 oz-in (7.2 to 72 g-cm) for GU series Dielectric withstanding voltage: 1000 VDC and GN 1R2 Contact resistance: 0.01 Ohms 0.2 to 2.0 oz-in (14.4 to 144 g-cm) for GW 6 and GN 2R5 to GN 8R0 Insulation resistance: 10 Megohms min at 500 VDC PART NUMBERING SYSTEM GU C 1R2 00 Sapphire Mount Type Maximum Rated Modification Suffix Dielectric Capacitance (pF) C = PC Mount 00 = +350 100 ppm/C (no marking) GN Three significant figures F = Flange Mount 01 = as above, with PTFE protective GU with R used as decimal cap (GN and GW series) L = Horizontal Surface GW point. e.g. 1R2 = 1.2 pF Mount 50 = NPO 50 ppm/C ( 75 for 8 pF models) (dimple or red ID mark N = Leadless on adjustment screw) R = Reverse Lead Mount 51 = as above, with PTFE protective V = Vertical Surface cap (GN and GW series) Mount Sprague-Goodman Electronics, Inc. 1700 SHAMES DRIVE, WESTBURY, NY 11590 TEL: 516-334-8700 FAX: 516-334-8771 E-MAIL: info spraguegoodman.com MICROWAVE SAPPHIRE PISTONCAP TRIMMER CAPACITORS SG-207E K DIA K DIA Fig. 1 Fig. 2 Type F Flange Mount 0.015 0.012 0.015 0.012 X SLOT DP SLOT X DP 0.38 0.30 0.38 0.30 0.010 0.010 0.25 0.25 A1 A 2 B 1 D D C C DIA DIA Capacitance CK (pF) Q min A B 0.005 D 0.005 A Model No. Model No. 1 1 2 --------- --------- (250 MHz) Fig. 1 Fig.2 min max 0.1 0.1 0.20 0.17 0.075 0.09 0.145 0.23 GUF1R200 GNF1R200 0.3 1.2 4000 -- -- -- -- -- 5.2 4.4 1.9 2.3 3.68 5.8 GUF1R250 GNF1R250 0.20 0.17 0.118 0.09 0.185 0.23 GWF2R500 GNF2R500 0.4 2.5 3000 -- -- -- -- -- -- -- 5.2 4.4 3.00 2.3 4.70 5.8 GWF2R550 GNF2R550 0.33 0.25 0.118 0.15 0.185 0.31 GWF4R500 GNF4R500 0.6 4.5 2000 -- -- -- -- -- - 8.4 6.5 3.00 3.8 4.70 7.9 GWF4R550 GNF4R550 0.57 0.41 0.118 0.25 0.185 0.47 GWF8R000 GNF8R000 0.8 8.0 1000 -- -- -- - -- -- 14 11 3.00 6.4 4.70 12 GWF8R050 GNF8R050 Fig. 1 Fig. 2 0.015 0.012 Type R SLOT X DP 0.015 0.012 X SLOT DP 0.38 0.30 0.38 0.30 Reverse Lead Mount K DIA K DIA G G 0.23 0.23 0.23 0.23 5.8 5.8 5.8 5.8 0.06 1.4 A 1 0.06 A 2 1.4 B 1 0.010 TYP 0.25 C DIA 0.010 H H TYP 2 1 0.25 C DIA Capacitance CK (pF) Q min A B 0.005 G H 0.005 A H Model No. Model No. 1 1 1 2 2 --------- --------- (250 MHz) Fig. 1 Fig.2 min max 0.1 0.1 0.20 0.17 0.075 0.04 0.114 0.23 0.015 GUR1R200 GNR1R200 0.3 1.2 4000 -- -- -- -- -- -- 5.2 4.4 1.9 1.0 2.90 5.8 0.38 GUR1R250 GNR1R250 0.20 0.17 0.118 0.09 0.16 0.23 0.015 GWR2R500 GNR2R500 0.4 2.5 3000 -- -- -- -- -- -- -- 5.2 4.4 3.00 2.4 4.0 5.8 0.38 GWR2R550 GNR2R550 0.33 0.25 0.118 0.09 0.16 0.31 0.050 GWR4R500 GNR4R500 0.6 4.5 2000 -- -- -- - -- -- --- 8.4 6.5 3.00 2.4 4.0 7.9 1.3 GWR4R550 GNR4R550 0.57 0.41 0.118 0.09 0.14 0.16 0.47 0.14 GWR8R000 GNR8R000 0.8 8.0 1000 -- -- -- -- -- -- -- -- 14 11 3.00 2.4 3.5 4.0 12 3.5 GWR8R050 GNR8R050 Dimensions are in/mm. Unless otherwise specified, tolerance is 0.01/0.3, except slot tolerance is +0.001/0.03, -0.002/0.05 and lead thickness tolerance is 0.002/0.05. SPRAGUE-GOODMAN ELECTRONICS, INC., 1700 SHAMES DRIVE, WESTBURY, NY 11590 TEL: 516-334-8700 FAX: 516-334-8771 E-MAIL: info spraguegoodman.com 2