THERMAL SENSORS / CIRCUIT PROTECTORS
TECHNOLOGY OF TOMORROW
THERMAL SENSORS
LINEAR PTC, THIN FILM
LT 73
STRUCTURE
1
2
3
4
5
6
7
8
COATING COLOR
Orange
MARKING
Black, 4 digits
Products with Pb-free terminations
meet RoHS requirements
Ceramic substrate
Metal film resistor element
Top termination
Bottom termination
End termination
Protective layer
Nickel barrier
Solder plating
IDENTIFICATION
PRODUCT CODE
LT73
TYPE DESIGNATION (HOW TO ORDER)
Old Part No.
New Part No.
(Pb-free)
LT73
LT73
PRODUCT CODE
T.C.R.
(ppm/K)
600
2A
2A
STYLE
2A: 0805
2B: 1206
J
T
RESISTANCE
TOLERANCE
TERMINATION
SURFACE MATERIAL
T: Sn
L: Sn/Pb
TD
TD
TAPING*
TD, TE, BK
*Please see “PACKAGING”
10K
103
NOMINAL
RESISTANCE
3 digits
J
RESISTANCE
TOLERANCE
G: ±2%
J: ±5%
0600
T.C.R.
(ppm/K)
4 digits
FEATURES
■
■
■
■
■
■
■
■
■
SMD metal thin film resistors with thermo-perceptivity
Resistance value changes in linear positive way to temperature
Suitable for temperature control in various industrial equipment
Anti-leaching nickel barrier terminations
25 specific temperature characteristics
Meets or exceeds IEC 60115-8, JIS C 5201-8
Rated ambient temperature: + 70° C
Operating temperature range: -40° C ... + 125° C
Suitable for reflow and wave soldering
DIMENSIONS (mm)
0805
1206
LT73 2A
LT73 2B
2.0
3.2
1.25
1.60
0.5
0.6
0.4 ± 0.2
0.5 ± 0.3
0.3
0.4
Specifications given herein may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
SIZE
TYPE
L ± 0.2
W ± 0.2
t ± 0.1
c
d
+ 0.2
- 0.1
EXAMPLES OF TEMPERATURE CHARACTERISTICS
DERATING CURVE
RATING
SIZE
TYPE
T.C.R.*
150 • 250 • 350 • 450 • 500 ppm/K
600 • 700 • 800 • 900 ppm/K
1000 • 1200 • 1400 ppm/K
1600 • 1800 ppm/K
2000 • 2200 • 2400 ppm/K
2600 • 2800 ppm/K
3000 • 3300 • 3600 ppm/K
3900 ppm/K
4200 ppm/K
4500 ppm/K
150 • 250 • 350 • 450 • 500 ppm/K
600 • 700 • 800 • 900 ppm/K
1000 • 1200 • 1400 ppm/K
1600 • 1800 ppm/K
2000 • 2200 • 2400 ppm/K
2600 • 2800 ppm/K
3000 • 3300 • 3600 ppm/K
3900 ppm/K
4200 ppm/K
4500 ppm/K
POWER**
RATING
MAX.
WORKING
VOLTAGE
MAX.
T.C.R.
OVERLOAD
TOLERANCE
VOLTAGE
± 100 ppm/K
± 150 ppm/K
± 15%
0.1 W
50 V
100 V
± 10%
RESISTANCE RANGE
E24 • G (±2%)
2 kΩ ... 24 kΩ
E24 • J (±5%)
––
1 kΩ ... 20 kΩ
1 kΩ ... 13 kΩ
510
Ω
... 4.7 kΩ
510
Ω
... 4.7 kΩ
510
Ω
... 3 kΩ
100
Ω
... 1 kΩ
51
Ω
... 510
Ω
––
1 kΩ ... 43 kΩ
1 kΩ ... 27 kΩ
1 kΩ ... 10 kΩ
510
Ω
... 9.1 kΩ
510
Ω
... 6.2 kΩ
100
Ω
... 2 kΩ
51
Ω
... 510
Ω
THERMAL SENSORS
CIRCUIT PROTECTORS
0805
LT73 2A
––
± 100 ppm/K
± 150 ppm/K
± 15%
0.125 W
75 V
150 V
± 10%
2 kΩ ... 51 kΩ
1206
LT73 2B
––
* T.C.R. Measuring Temperature: + 25° C / + 75° C
**For resistors operated at an ambient temperature of +70°C or above, the power rating shall be derated in accordance with the above derating curve.
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
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