THERMAL SENSORS / CIRCUIT PROTECTORS
TECHNOLOGY OF TOMORROW
THERMAL SENSORS
LINEAR PTC, THICK FILM
LA 73
STRUCTURE
1
2
3
4
5
6
7
8
Ceramic substrate
Top termination
Bottom termination
Thick film resistor element
Protective layer
End termination
Diffusion barrier (Ni)
Solder plating
IDENTIFICATION
PRODUCT CODE
LA73 1E, 1J
LA73 2A, 2B
COATING COLOR
Orange
MARKING
No marking
Black, 3 digits
Products with Pb-free terminations
meet RoHS requirements
TYPE DESIGNATION (HOW TO ORDER)
Old Part No.
New Part No.
(Pb-free)
Specifications given herein may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
LA73
LA73
PRODUCT CODE
600
1E
1E
STYLE
1E, 1J, 2A, 2B
(1E only with
termination ”T”)
J
T
TERMINATION
RESISTANCE
TOLERANCE SURFACE MATERIAL
T: Sn
L: Sn/Pb
TP
TP
TAPING*
TP, TD, BK
*Please see “PACKAGING”
1K2
122
NOMINAL
RESISTANCE
3 digits
J
RESISTANCE
TOLERANCE
J: ±5%
0600
T.C.R.
(ppm/K)
4 digits
T.C.R.
(ppm/K)
FEATURES
■
■
■
■
■
■
■
■
Resistance value changes in linear positive way to temperature
Quick response to the change of temperature
Anti-leaching nickel barrier terminations
15 specific temperature coefficients
Meets or exceeds IEC 60115-8, JIS C 5201-8
Rated ambient temperature: + 70° C
Operating temperature range: - 55° C ... + 125° C
Suitable for reflow and wave soldering
DIMENSIONS (mm)
SIZE
0402
0603
0805
1206
TYPE
LA73 1E
LA73 1J
LA73 2A
LA73 2B
L
1.0 ± 0.1
1.6 ± 0.2
2.0 ± 0.2
3.2 ± 0.2
W
0.5 ± 0.1
0.8 ± 0.1
1.25 ± 0.1
1.6 ± 0.2
C
0.2 ± 0.1
0.3 ± 0.1
0.4 ± 0.2
0.5 ± 0.3
d
0.25 ± 0.1
0.3 ± 0.1
+0.2
0.3 ±
0.2
–0.1
+0.2
0.4 ±
0.2
–0.1
t ± 0.1
0.35
0.45
0.5
0.6
RATING
SIZE
0402
0603
0805
1206
TYPE
LA73
LA73
LA73
LA73
1E
1J
2A
2B
POWER*
RATING
0.016W
0.063W
0.1W
0.125W
THERMAL
DISSIPATION
CONSTANT
6.8 mW/K
7.6 mW/K
8.2 mW/K
9 mW/K
MAX.
WORKING
VOLTAGE
10 V
25 V
50 V
50 V
TEMPERATURE CHARACTERISTICS
Resistance changing rate (%)
*For resistors operated at an ambient temperature of +70°C or above, the power rating shall be derated.
Temperature (°C)
TCR AND RESISTANCE RANGE
T.C.R.*
(ppm/K)
600
800
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
3300
3600
T.C.R.
TOLERANCE
± 150 ppm/K
RESISTANCE RANGE • E12
1E (0402)
1.2 kΩ ~ 2.2 kΩ
1.2 kΩ ~ 2.2 kΩ
––
––
––
––
––
––
––
––
––
––
––
––
––
1J (0603)
––
––
~ 10 kΩ
~ 6.8 kΩ
~ 4.7 kΩ
~ 3.9 kΩ
~ 2.7 kΩ
~ 2.7 kΩ
~ 1.8 kΩ
~ 1.2 kΩ
~ 1.2 kΩ
~ 390
Ω
~ 220
Ω
~ 120
Ω
~ 82
Ω
2A (0805)
––
––
~ 10 kΩ
~ 6.8 kΩ
~ 4.7 kΩ
~ 3.9 kΩ
~ 2.7 kΩ
~ 2.7 kΩ
~ 1.8 kΩ
~ 1.2 kΩ
~ 1.2 kΩ
~ 390
Ω
~ 220
Ω
~ 120
Ω
~ 82
Ω
2B (1206)
––
––
1 kΩ ~ 10 kΩ
680
Ω
~ 6.8 kΩ
470
Ω
~ 4.7 kΩ
470
Ω
~ 3.9 kΩ
330
Ω
~ 2.7 kΩ
330
Ω
~ 2.7 kΩ
220
Ω
~ 1.8 kΩ
220
Ω
~ 1.2 kΩ
100
Ω
~ 1.2 kΩ
100
Ω
~ 390
Ω
68
Ω
~ 220
Ω
33
Ω
~ 120
Ω
22
Ω
~ 82
Ω
RESISTANCE
TOLERANCE
± 200 ppm/K
± 10%
1 kΩ
680
Ω
470
Ω
470
Ω
330
Ω
330
Ω
220
Ω
220
Ω
100
Ω
100
Ω
68
Ω
33
Ω
22
Ω
1 kΩ
680
Ω
470
Ω
470
Ω
330
Ω
330
Ω
220
Ω
220
Ω
100
Ω
100
Ω
68
Ω
33
Ω
22
Ω
J (± 5%)
* T.C.R. Measuring Temperature + 25° C / + 75° C
The resistance value of this resistor changes by its self-heating by power applied. Therefore, it is recommended to take its self-heating into consideration.
Care must be taken that the resistors may be damaged by occurrence or application of the static electricity in equipment assembling processes.
EUROPE GmbH • Kaddenbusch 6 • D-25578 Dägeling / ITZEHOE • PHONE: +49 (0) 48 21 / 89 89-0 • FAX: +49 (0) 48 21/ 89 89 89 • Internet: www.koaeurope.de
95
45/04
THERMAL SENSORS
CIRCUIT PROTECTORS
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