L
T
resistors
linear positive miniature tempco thermistor
EU
features
•
•
•
•
•
High stability and excellent linearity
Extensive choice of T.C.R. ranges
Miniature size
Marking: Blue-gray body color with color-coded bands
Products with lead-free terminations
meet EU RoHS requirements
dimensions and construction
L
D
Trimming Line
Ceramic Core
d
l
Type
LT1/6
LT1/4
L (ref.)
.126
(3.2)
.248
(6.3)
Dimensions
inches
(mm)
C (max.)
D
d
.146
(3.7)
.280
(7.1)
l
.067±.008 .018±.002
(1.7±0.2) (0.45±0.05)
1.18±.118
.091±.012 .024±.002
(30.0±3.0)
(2.3±0.3) (0.6±0.05)
Marking
Resistive
Film
End
Cap
Lead
Wire
Insulation Coating
C
ordering information
New Part #
LT
Type
1/6
Power
Rating
1/4
1/6
C
Termination
Material
C: SnCu
(Other termination
styles available,
contact factory
for options)
T26
Taping and
Forming
T26, T52
A
Packaging
A: Ammo
R: Reel
102
Nominal
Resistance
2 significant
figures + 1
multiplier
“R” indicates
decimal on
value <10Ω
J
Tolerance
G: ±2%
J: ±5%
3300
T.C.R.
(ppm/˚C)
150 - 4,500
applications and ratings
T.C.R.
(ppm/°C)*
150
250
350
450
500
600
700
800
900
1000
1200
1400
T.C.R.
Tolerance
Resistance
Range
E-24
(LT1/6S)
Resistance
Range
E-24
(LT1/4S)
Resistance
Tolerance
Rated
Ambient
Temperature
Operating
Temperature
Range
±100 ppm/°C
100Ω - 51KΩ
100Ω - 110KΩ
G: ±2%
-40°C
to
+125°C
±150 ppm/°C
100Ω - 43KΩ
100Ω - 82KΩ
J: ±5%
+70°C
±15%
100Ω - 27KΩ
100Ω - 51KΩ
* T.C.R. measuring temperature: +25°C to +75°C
For further information on packaging, please refer to Appendix C.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
2/11/08
108
KOA Speer Electronics, Inc.
• Bolivar Drive • P Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
.O.
L
T
linear positive miniature tempco thermistor
applications and ratings
T.C.R.
(ppm/°C)*
1600
1800
2000
2200
2400
2600
2800
3000
3300
3600
3900
4200
4500
4700
T.C.R.
Tolerance
±15%
Resistance
Range
E-24
(LT1/6S)
100Ω - 10KΩ
100Ω - 9.1KΩ
100Ω - 6.2KΩ
±10%
10Ω - 5.1KΩ
10Ω - 5.1KΩ
10Ω - 3.3KΩ
10Ω - 1.0KΩ
10Ω - 330KΩ
10Ω - 100Ω
Resistance
Range
E-24
(LT1/4S)
100Ω - 27KΩ
100Ω - 22KΩ
100Ω - 18KΩ
10Ω - 7.5KΩ
10Ω - 7.5KΩ
10Ω - 6.2KΩ
10Ω - 1.3KΩ
10Ω - 680Ω
10Ω - 330Ω
J: ±5%
+70°C
-40°C
to
+125°C
Resistance
Tolerance
Rated
Ambient
Temperature
Operating
Temperature
Range
resistors
* T.C.R. measuring temperature: +25°C to +75°C
environmental applications
Derating Curve
100
80
% Rated Power
60
40
20
0
-40
Temperature Characteristics of Resistance
Resistance Changing Rate (%)
50
40
3300
TCR (X10
-6
/K)
4500
30
2400
20
10
0
-10
-20
-30
-75
-50
-25
0
25
50
75
100
1600
-20
0
20
40
60
80
70
Ambient Temperature
(°C)
100 120
140
125
125
Ambient Temperature
(°C)
Approximate Expression for Resistance-Temperature Characteristics
T.C.R.
(x10
-6
/K)
3000
3300
3600
3900
C
0
0.934
0.927
0.921
0.915
C
1
0.00258
0.00282
0.00306
0.00330
C
2
2.77
3.17
3.58
4.00
x
x
x
x
10
-6
10
-6
10
-6
10
-6
T.C.R.
(x10
-6
/K)
4200
4500
4700
C
0
0.909
0.903
0.899
C
1
0.00353
0.00377
0.00392
C
2
4.44 x 10
-6
4.89 x 10
-6
5.20 x 10
-6
(Values are not guaranteed but typical)
R
T
=R
25
(C
0
+C
1
T+C
2
T
2
)
R
T
: Resistance value at T°C
R
25
: Resistance value at 25°C
T: Ambient temperature (°C)
C
0
, C
1
, C
2
: Constants
Performance Characteristics
Parameter
Short Time Overload
Resistance to Solder Heat
Load Life
Temperature Cycling
Low/High Vibration
Terminal Strength
Solvent Resistance
Dielectric Withstanding Voltage
Minimum Dielectric
Withstanding Voltage
Requirement
±(1.0% + 0.05Ω)
±3.0%
±(1.0% + 0.05Ω)
Test Method
2.5 x RCWV* for 5 seconds
MIL-STD-202, Method 210
MIL-STD-202, Method 108, 70°C, 1000 hours
-55°C, 25°C, 125°C, 5 cycles
MIL-STD-202, Method 210
MIL-STD-202, Method 211
—
±(0.5% + 0.05Ω)
LT1/6S: 300V
LT1/4S: 500V
* RCWV = Rated Continuous Working Voltage
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
12/22/05
KOA Speer Electronics, Inc.
• Bolivar Drive • P Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
.O.
109
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