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 (Sn 90% / Pb 10%)
IDENTIFICATION
PRODUCT CODE
LA73
COATING COLOR
Orange
MARKING
Black, 3 digits
TYPE DESIGNATION (HOW TO ORDER)
Old Part No.
New Part No.
LA73
LA73
PRODUCT CODE
T.C.R.
(ppm/K)
3300
1J
1J
STYLE
J
L
RESISTANCE
TOLERANCE
TERMINATION
SURFACE MATERIAL
T: Sn
L: Sn/Pb
TD
TD
TAPING*
*Please see “PACKAGING”
100R
101
NOMINAL
RESISTANCE
3 digits
J
RESISTANCE
TOLERANCE
3300
T.C.R.
(pp/m/K)
FEATURES
■
■
■
■
■
■
■
■
Resistance value changes in linear positive way to temperature
Quick response to the change of temperature
90/10 solder plated terminations
Anti-leaching nickel barrier terminations
15 specific temperature coefficients
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
0.5
0.5
0.6
RATING
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
TEMPERATURE CHARACTERISTICS
TYPE
LA73
LA73
LA73
LA73
1E
1J
2A
2B
Resistance changing rate (%)
SIZE
0402
0603
0805
1206
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 (°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
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
± 100 ppm/K
± 5%
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
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
67
PCB Design
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