ENGINEERING BULLETIN
SG-500D
Sprague-Goodman
Supercedes SG-500C
MICA DIELECTRIC COMPRESSION
TRIMMER CAPACITORS
FEATURES
Very large capacitance ranges Good RF current handling capability
High Q Many forms and mounting styles
SPECIFICATIONS
Operating Temperature Range: 35C to +85C Capacitance change with temperature (capacitor
1 1
set at /4 to /2 turn from the tight position):
Maximum Capacitance: When set at the tight
Types 1, 5, 9 = (2.5% + 0.3 pF)
position (tight defined as 28 oz-in/2.0 kg-cm), the
Types 2, 3, 4, 6, 7, 8 = (1.5% + 0.3 pF)
maximum capacitance will be no less than the
value indicated in the table.
Capacitance drift with temperature (capacitor set
1 1
at /4 to /2 turn from the tight position):
Minimum Capacitance: When adjusting screw is
Types 1, 5, 9 = (2.0% + 0.5 pF)
rotated 3 turns from tight position (2 turns for types
Types 2, 3, 4, 6, 7, 8 = (1.5% + 0.5 pF)
1, 5, and 9), the minimum capacitance will be no
greater than the value indicated in the table.
Q vs Capacitance
Voltage: Working Dielectric Withstanding
(1 MHz)
(VDC) (VDC)
1,000
Type 1 250 500
Types 2, 3, 4 175 350
Type 5 500 1000
Q
Types 6, 7, 8 250 500
Type 9 2000 2700
100
Insulation Resistance: 100,000 megohms min at 25C
Q: Minimum Q at 1 MHz per graph (for units which
have nominal maximum capacitance 1000 pF).
10
Dissipation Factor: Maximum DF = 0.004 at 1 kHz
(for units which have nominal maximum
1 10 100 1,000
capacitance > 1000 pF).
Capacitance (pF)
Sprague-Goodman Electronics, Inc.
1700 SHAMES DRIVE, WESTBURY, NY 11590
TEL: 516-334-8700 FAX: 516-334-8771
E-MAIL: info@spraguegoodman.comMICA DIELECTRIC TRIMMER CAPACITORS SG-500D
PART NUMBERING SYSTEM
GM A 2 00 00
Mica Dielectric Code MODIFICATIONS
00 = Standard*
01 = Mica Insulated
MOUNTING STYLES TYPE
Screw
Symbol Size (in/mm)
A = Bracket mount for wired 02 = Ceramic
assembly Insulated Screw
1 = 0.875 x 0.938 (22.2 x 23.8)
B = Printed circuit mount, top adjust, 03 = Guide Cup for
2 = 0.375 x 0.531 (9.53 x 13.5)
4 terminals Screw (Types 2,
3 = 0.375 x 0.750 (9.53 x 19.1)
3, 4, 6, 7 and 8)
C = Printed circuit mount, top adjust,
4 = 0.625 x 0.750 (15.9 x 19.1)
2 terminals 04 = Guide Cup and
5 = 0.875 x 0.938 (22.2 x 23.8) Mica Insulated
D = Printed circuit mount, side
Screw
6 = 0.375 x 0.531 (9.53 x 13.5)
adjust, 2 terminals
*Types 1, 5, and 9 are
1
7 = 0.375 x 0.750 (9.53 x 19.1)
E = Panel mount, /4 long bushing
normally supplied
3
8 = 0.625 x 0.750 (15.9 x 19.1)
F = Panel mount, /16 long bushing
with mica insulated
9
9 = 0.875 x 0.938 (22.2 x 23.8)
G = Panel mount, /32 long bushing
screw (Mod 01)
3
H = Panel mount, /16 long split
bushing
Types 2 and 6 Types 3 and 7 Types 4 and 8
Capacitance Range Capacitance Range Capacitance Range
(pF) (pF) (pF)
1 2 3
Model No. Model No. Model No.
min max min max min max
2.5 7 GM 20000 2.5 12 GM 30000 315 GM 40000
420 GM 20200 3.5 25 GM 30100 530 GM 40100
845 GM 20300 7.0 40 GM 30200 10 80 GM 40200
12 65 GM 20400 16.0 100 GM 30300 20 180 GM 40300
16 90 GM 20500 25.0 150 GM 30400 45 280 GM 40400
25 115 GM 20600 40.0 200 GM 30500 75 380 GM 40500
55 285 GM 20700 56.0 250 GM 30600 105 480 GM 40600
90 340 GM 20800 75.0 300 GM 30700 140 580 GM 40700
95.0 350 GM 30800 175 680 GM 40800
1
Insert letter A, B, C, or D in blank space
115.0 400 GM 30900 215 790 GM 40900
for mounting style required.
130.0 450 GM 31000 260 900 GM 41000
For type 6, substitute 6 for 2 in the fourth
150.0 500 GM 31100 300 1000 GM 41100
character of the catalog number.
170.0 550 GM 31200 330 1100 GM 41200
Example: GMA20200 becomes GMA60200
200.0 600 GM 31300 360 1200 GM 41300
220.0 650 GM 31400 380 1300 GM 41400
240.0 700 GM 31500 420 1400 GM 41500
2 3
Insert letter A, B, C, or D in blank space Insert letter A, B, C, or D in blank space
for mounting style required. for mounting style required.
For type 7, substitute 7 for 3 in the fourth For type 8, substitute 8 for 4 in the fourth
character of the catalog number. character of the catalog number.
Example: GMA30200 becomes GMA70200 Example: GMA40200 becomes GMA80200
SPRAGUE-GOODMAN ELECTRONICS, INC., 1700 SHAMES DRIVE, WESTBURY, NY 11590 TEL: 516-334-8700 FAX: 516-334-8771 E-MAIL: info@spraguegoodman.com
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