ENGINEERING BULLETIN
SG-207F
Sprague-Goodman
Supercedes SG-207E
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: -55°C to +125°C
Rated voltage: 500 VDC
Dielectric withstanding voltage: 1000 VDC
Contact resistance: 0.01 Ohms
Insulation resistance: 106 Megohms min at 500 VDC
Torque: 0.1 to 1.0 oz-in (7.2 to 72 g-cm) for GU series
and GN_1R2_ _
0.2 to 2.0 oz-in (14.4 to 144 g-cm) for GW
and GN_2R5_ _ to GN_8R0_ _
PART NUMBERING SYSTEM
Capacitance Code
GU
Sapphire
Dielectric
C
00
Industry Standard, i.e.
Mount Type
C = PC Mount
F = Flange Mount
L = Horizontal Surface
Mount
Modification Suffix
00 = +350 100 ppmꢀ°C (no marꢁing)
01 = as above, with PTFE protective
cap
50 = NPO 50 ppmꢀ°C ( 75 for 8 pF
models) (dimple or red ID marꢁ
on adjustment screw)
1R2 = 1.2 pF
100 = 10 pF
GN
GU
GW
N = Leadless
R = Reverse Lead Mount
V = Vertical Surface Mount
Y = Vertical Surface Mount,
Wide Lead
51 = as above, with PTFE protective
cap
Sprague-Goodman Electronics, Inc.
1700 SHAMES DRIVE, WESTBURY, NY 11590
TEL: 516-334-8700 • FAX: 516-334-8771
E-MAIL: info@spraguegoodman.com