Document Number: 51026 For technical questions, contact: sfer@vishay.com www.vishay.com
Revision: 05-Aug-04 73
T93
Vishay Sfernice
3/8” Square Multi-Turn Cermet Trimmers
FEATURES
∑
Industrial Grade
∑
0.5 Watt at 70°C
∑
CECC 41 100
∑
MIL-R-22097
∑
Good stability
∑
Contact resistance variation < 1% typical
∑
Meet MIL-R-22097 specifications
The T93 is a small size trimmer - 3/8” x 3/8” x 3/16” - answering
PC board mounting requirements.
Five versions are available which differ by the position of the
control screw in relation to the PC board plane and by the spacing
of the terminals.
Excellent operational stability is provided by the use of a cermet
element.
DIMENSIONS
in millimeters
CIRCUIT DIAGRAM
2.3 ± 0.2*
2.54
2.54
slot 0.6 x 0.6
9.8 max 5 ± 1
ø 0.5
a
b
c
1.3
ø 2.2
7.9 ± 0.2
0.5
a
b
c
0.6 ± 0.2*
2.54*
2.54*
slot 0.6 x 0.6
2.54
9.8 max 5 ± 1
ø 0.5
a
b
c
1.3
ø 2.2
7.9 ± 0.2
0.5
9.7 max
5 max
1.2 ± 0.2
a
b
c
2.3 ± 0.2*
2.54*
2.54*
9.8 max 5 ± 1
ø 0.5
a
b
c
slot 0.6 x 0.6
ø 2.2
1.3
9.7 max
5 max
1.2 ± 0.1
1.6 ± 0.1 a
b
c
0.6 ± 0.2*
2.54*
2.54*
2.54
9.8 max 5 ± 1
a
slot 0.6 x 0.6
ø 2.2
1.3
ø 0.5
b
c
0.5
9.7 max
5 max
1.2 ± 0.1
1.6 ± 0.1 a
b
c
4.8 ± 0.2*
slot 0.6 x 0.6
2.54*
2.54*
2.54*
9.7 max
1.3
ø 2.2
c
b
a
T93XA
T93XB
T93YA
T93YB
T93Z
9.7 max
5 max
1.2 ± 0.2
5.2 max
5 ± 1
ø 0.5
0.5
Base level
1.2 ± 0.1
1.3 ± 0.1
9.7 max
c
b
a
ac
bcw
(2)
(3)
(1)
* to be measured at base level
Terminal Spacing
on a 2.54 PCB
www.vishay.com For technical questions, contact: sfer@vishay.com Document Number: 51026
74 Revision: 05-Aug-04
T93
Vishay Sfernice
3/8” Square Multi-Turn Cermet Trimmers
ELECTRICAL SPECIFICATIONS
Resistive Element
cermet
Electrical Travel
19 turns ± 2
Resistance Range
10
W
to 2.2M
W
Standard series E3
1 - 2.2 - 4.7 and on request 1 - 2 - 5
Tolerance Standard
± 10%
On Request
± 5%
Power Rating Linear
0.5W at + 70°C
Logarithmic
not applicable
Temperature Coefficient
See Standard Resistance Element Table
Limiting Element Voltage (Linear Law)
250V
Contact Resistance Variation
2% Rn or 2
W
End Resistance (Typical)
1
W
Dielectric Strength (RMS)
1000V
Insulation Resistance (500VDC)
10
6
M
W
MECHANICAL SPECIFICATIONS
Mechanical Travel
22 turns ± 5
Operating Torque (max. Ncm)
1.5
End Stop Torque
clutch action
Unit Weight (max. g)
1.2
ENVIRONMENTAL SPECIFICATIONS
Temperature Range
– 55°C to + 155°C
Climatic Category
55 / 125 / 56
Sealing
fully sealed
container IP67
POWER RATING CHART
050 100 155
0.5
0
AMBIENT TEMPERATURE IN DEGREES CELSIUS
RATED POWER IN WATT
85
7025
PERFORMANCE
TESTS CONDITIONS
TYPICAL VALUES AND DRIFTS
DD
DD
RT
RT (%)
DD
DD
R
1-2
R
1-2
(%)
Load Life
1000 hours at rated power
90’/30’ - ambient temp. 70°C
± 1% ± 2%
Contact res. variation: < 1% Rn
Climatic Sequence
Phase A dry heat 125°C - 30% Pr
Phase B damp heat
Phase C cold – 55°C
Phase D damp heat 5 cycles
± 0.5% ± 1%
Long Term Damp Heat
56 days
± 0.5% ± 1%
Dielectric strength: 1000V RMS
Insulation resistance: > 10
4
M
W
Rapid Temperature Change
5 cycles
– 55°C at + 125°C ± 0.5%
D
V
1-2
V
1-3
£
± 1%
Shock
50 g at 11m secs
3 successive shocks
in 3 directions
± 0.1% ± 0.2%
Vibration
10-55 Hz
0.75mm or 10 g
during 6 hours
± 0.1%
D
V
1-2
V
1-3
£
± 0.2%
Rotational Life
200 cycles ± 2%
Contact res. variation: < 1% Rn
Document Number: 51026 For technical questions, contact: sfer@vishay.com www.vishay.com
Revision: 05-Aug-04 75
T93
3/8” Square Multi-Turn Cermet Trimmers
Vishay Sfernice
MARKING
Printed:
– VISHAY trademark
– series
– style
– ohmic value (in
W
, k
W
, M
W
)
– tolerance (in %)
– manufacturing date
– marking of terminal 3
STANDARD RESISTANCE ELEMENT DATA
STANDARD
RESISTANCE
VALUES
LINEAR LAW T.C.
–55°C
+125°C
MAX.
POWER
AT 85°C
MAX.
WORKING
VOLTAGE
MAX. CUR.
THROUGH
ELEMENT
WW
WW
W V mA ppm/°C
10
22
47
0.5 2.2
3.3
4.8
224
150
103
0
+200
100
220
470
1k
2.2k
4.7k
10k
22k
47k
100k
220k
470k
1M
2.2M
0.5
0.28
0.13
0.06
0.028
7
10.5
15.3
22.4
33.2
48.5
70.7
105
153
224
250
250
250
250
70
47
32
22
15
10
7
4.8
3.2
2.2
1.1
0.53
0.25
0.11
± 100
NB. On delivery the wiper is positioned at mid-level.
PACKAGING
– In magazine pack by 50 pieces (tube) code “TU50”.
ORDERING INFORMATION
T93
SERIES
XA
VERSION
220k
WW
WW
OHMIC VALUE
± 10%
TOLERANCE
TU50
PACKAGING
TU50 : Tube
SAP PART NUMBERING GUIDELINES
T 93XA 224 K T 2 0
MODEL STYLE OHMIC
VALUE TOL PACKAGING
CODE
SPECIAL
(IF APPLICABLE)
See the end of this data book for conversion tables
