KOA LA731J Thick film linear positive tempco thermistor Datasheet

1733 Reader's Spreads pg1-203:document
1/27/09
4:11 PM
Page 148
LA73
thick film linear positive tempco thermistor
EU
features
circuit
protection
•
•
•
•
Anti-leaching nickel barrier terminations
Twenty-five specifiable temperature characteristics
Marking: Black three-digit on orange body color
Products with lead-free terminations meet EU RoHS
requirements. Pb located in glass material, electrode
and resistor element is exempt per Annex 1, exemption
5 of EU directive 2005/95/EC
dimensions and construction
L
c
Type
c
W
Solder
Plating
Ni
Plating
t
d
Protective
Coating
L
(Inch Size Code)
Dimensions inches (mm)
W
c
d
t
1J
(0603)
.063±.008 .031±.004 .012±.004 .012±.004 .018±.004
(1.6±0.2)
(0.8±0.1)
(0.3±0.1) (0.45±0.1)
(0.3±0.1)
2A
(0805)
.079±.008 .049±.004 .016±.008
(2.0±0.2) (1.25±0.1) (0.4±0.2)
.012
2B
(1206)
.126±.008 .063±.008
(3.2±0.2)
(1.6±0.2)
.016
Resistive Inner
Film
Electrode
.02±.008
(0.5±0.3)
(0.3
(0.4
+.008
-.004
+0.2 )
-0.1
.02±.004
(0.5±0.1)
+.008
-.004
+0.2 )
-0.1
.024±.004
(0.6±0.1)
Ceramic
Substrate
ordering information
New Part #
LA73
Type
1J
T
Size
Code
1J: 0603
2A: 0805
2B: 1206
Termination
Material
T: Sn
(Other termination
styles available,
contact factory
for options)
TD
Packaging
TD: 7" paper
(5,000 pieces/reel)
101
Resistance
Value
2 significant
figures + 1
multiplier
J
3300
Tolerance
T.C.R.
J: ±5%
For further information on packaging,
please refer to Appendix A.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
150
11/20/08
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
1733 Reader's Spreads pg1-203:document
1/27/09
4:11 PM
Page 149
PMS 300 neg.
Black neg.
LA73
thick film linear positive tempco thermistor
applications and ratings
LA731J
25
7.6
LA732A
8.2
LA732B
9.0
50
+70°C
50
Operating Temp. Range: -55°C - +125°C
Resistance Range
E-12
LA731J
LA732A
LA732B
T.C.R.
(ppm/°C)
Max.
1KΩ - 10KΩ
680Ω - 6.8KΩ
470Ω - 4.7KΩ
470Ω - 3.9KΩ
330Ω - 2.7KΩ
330Ω - 2.7KΩ
220Ω - 1.8KΩ
220Ω - 1.2KΩ
100Ω - 1.2KΩ
100Ω - 390Ω
68Ω - 220Ω
33Ω - 120Ω
22Ω - 82Ω
1KΩ - 10KΩ
680Ω - 6.8KΩ
470Ω - 4.7KΩ
470Ω - 3.9KΩ
330Ω - 2.7KΩ
330Ω - 2.7KΩ
220Ω - 1.8KΩ
220Ω - 1.2KΩ
100Ω - 1.2KΩ
100Ω - 390Ω
68Ω - 220Ω
33Ω - 120Ω
22Ω - 82Ω
1KΩ - 10KΩ
680Ω - 6.8KΩ
470Ω - 4.7KΩ
470Ω - 3.9KΩ
330Ω - 2.7KΩ
330Ω - 2.7KΩ
220Ω - 1.8KΩ
220Ω - 1.2KΩ
100Ω - 1.2KΩ
100Ω - 390Ω
68Ω - 220Ω
33Ω - 120Ω
22Ω - 82Ω
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
3300
3600
Resistance
Tolerance
J: ±5%
T.C.R.
Tolerance
±200ppm/°C
±10%
environmental applications
Temperature Characteristics
Resistance Changing Rate (∆R)
Derating Curve
100
% Rated Power
80
60
40
20
0
-60 -40
-55
-20
0
20
40
60
80
70
Ambient Temperature
(°C)
100 120
140
125
40
3600ppm/°C
30
3000ppm/°C
20
2000ppm/°C
10
1000ppm/°C
0
-10
-20
-30
-40
-75
-50
-25
0
50
25
75
100
125
Ambient Temperature
(°C)
Approximate Expression for Resistance-Temperature Characteristics
T.C.R.
(x10-6/K)
C0
C1
C2
3000
3300
3600
0.926
0.918
0.910
0.00294
0.00325
0.00359
1.1 x 10-7
4.1 x 10-7
1.7 x 10-7
(Values are not guaranteed but typical)
RT=R25 (C0+C1T+C2T2)
RT: Resistance value at T°C
R25: Resistance value at 25°C
T: Ambient temperature (°C)
C0, C1, C2: Constants
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload (Short time)
Resistance to Solder Heat
Rapid Change of Temperature
Moisture Resistance
Endurance at 70°C
High Temperature Exposure
Requirement ∆ R ±(% + 0.05Ω)
Limit
Typical
Within specified
—
tolerance
Within specified
—
T.C.R.
±1.0%
±0.5%
±1.0%
±0.5%
±1.0%
±0.5%
±3.0%
±1.5%
±3.0%
±1.5%
—
±3% (Ref)
Test Method
25°C
+25°C/+75°C
Rated voltage x 2.5 or maximum working volume x 2 for 5 seconds, whichever is lower
260°C ± 5°C, 10 seconds ± 1 second
-55°C (30 minutes)/ +125°C (30 minutes), 100 cycles
40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
-40°C, 45 minutes
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
12/31/08
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
151
circuit
protection
Thermal
Rated
Max.
Part
Dissipation
Ambient Working
Designation Constant
Temp. Voltage (V)
(mW/°C)
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