7741 North Business Park Drive
Tucson, Arizona 85743
Ph: (520) 744-0400 Fax:(520) 744-6155
www.tusonix.com
Web Site: www.tusonix.com
E-mail: sales@tusonix.com
Trimmer
518 Series Trimmer Capacitor
Trimmer
Features of the 518 Trimmer
T
Actual Size
his tiny trimmer occupies less than .007 [.11 cc] cubic inches of space,
while exhibiting the ruggedness and capacitance range of a unit many times
its size. Its superb design assures rigid mounting stability.
A development of TUSONIX’ exclusive Monolithic Process, the sealed-in-ce-
ramic rotor electrode guarantees stability under extreme environmental condi-
tions. Precision lapped bearing surfaces afford smooth linear tuning.
Variation
Terminal Variation Options
518-000
.218
[5.54]
.090
[2.29]
.025
[0.64]
.145
[3.68]
.250
[6.35]
ROTOR
TERMINAL .008
[0.20]
.040
[1.02]
.195
[4.95]
ADJUSTING SLOT
.020/0.51 X .018/0.46
STATOR
TERMINAL
.065
[1.65]
.008
[0.20]
.015
[0.38]
.060
[1.52]
.218
[5.54]
.045
[1.14]
.030
[0.76]
.090
[2.29]
.145
[3.68]
.016 DIA. WIRE
[0.41] STATOR
TERMINAL
.200
[5.08]
.100
[2.54]
.035
[0.89] DIA.
.060
[1.52]
RECOMMENDED
MOUNTING HOLES
.020
[0.51] DIA.
Ordering Data
518-002
.239
[6.07]
MIL PRF-81 Dielectric
TUSONIX
Type
Designation
Part
Number CV35 TUSONIX Code
Style 518-016
Capaci-
tance
Range
(pF)
MIL PRF-81 Dielectric
TUSONIX
Type
Designation
Part
Number CV36 TUSONIX Code
Style 518-017
Capaci-
tance
Range
(pF)
.088
[2.24]
.235
[5.97]
STATOR
TERMINAL
.025
[0.64]
518-000
518-000
518-000
518-000
518-000
518-000
518-000
518-000
CV35A030
CV35A050
CV35A090
CV35A200
CV35A150
CV35A250
--
CV35C400
A
A
A
A
A
A
A
C
1.0-3
2.0-5
2.5-9
3.5-20
5.0-15
5.0-25
6.0-22
7.0-40
518-002
518-002
518-002
518-002
518-002
518-002
518-002
518-002
CV36A030
CV36A050
CV36A090
CV36A200
CV36A150
CV36A250
--
CV36C400
A
A
A
A
A
A
A
C
1.25-3
2.0-5
2.5-9
3.5-20
5.0-15
5.0-25
6.0-22
7.0-40
Specifications
Working Voltage A & C:. . . . . . . . . 100Vdc to 85°C; 50Vdc to 125°C
Dielectric Strength . . . . . . . . . . Two times WVdc for 1 to 5 seconds
Operating Temperature Range . . . . . . . . . . . . . . . . . . -55°C to 125°C
Q Factor @ 1 MHz . . . . . . . . . . . . . . . . . . .Code A & C: 500 Minimum
Insulation Resistance. . . . . . . . 10 gigaohms minimum at 25
°
C ±5°C
Torque. . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 to 3.0 oz. in.[0.2-2.0 Ncm]
Performance Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
Marking:
All units will be marked with the TUSONIX trademark,
capacitance range and dielectirc type code.
Example:
T 1-3 A
.020
[0.51]
.045
[1.14] DIA.
RECOMMENDED
MOUNTING HOLES
For dimensions
≤
.125”/3.18mm, tolerance is ±.005/0.13
For dimensions
≥
.126”/3.20mm, tolerance is ±.015/0.38
QUALITY FACTOR "Q"
2600
2200
1800
1400
1000
600
200
1
"Q" vs FREQUENCY
How to Order
Begin with ’0’, then specify series ‘518’ followed by
the three digit Terminal Variation you select from the
above options. Then list the Dielectric Type Code
you select from the table and the corresponding Ca-
pacitance Range.
EXAMPLE: 0518-000A1.0-3
TYP
IC
10
AL
20 30
50
100
FREQUENCY - MHz
3
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