Temperature Sensing Chip Resistor (P.T.C. Thermistor)
Type LT73 Series
Type LT73 Series
Characteristics -
Electrical
Resistance Range:
Resistance Tolerance:
Rated Power at 70°C:
Max. Working Voltage @ T
A
70°C:
Max. Overload Voltage @ T
A
70°C:
Operating Temperature Range:
TCR Measuring Temperature:
TCR Tolerance:
Insulation Resistance:
0805 Size (2A)
510R - 3K0
±5%
0.1 watt
50 volts
100 volts
-40°C ~ +125°C
+25°C ~ +75°C (See Graph)
± 10%
More than 10 Meg
1206 Size (2B)
510R - 6K2
±5%
0.125 watt
75 volts
150 volts
-40°C ~ +125°C
+25°C ~ +75°C (See Graph)
± 10%
More than 10 Meg
This tiny thin film chip is manufactured
by sputtering pure metals onto a high
purity alumina base. This process
ensures the element remains stable in
performance over a long life. The LT73
is equally suited to temperature
compensation or thermal protection
when
incorporated
within
the
appropriate electronics. This range of
sensors are finished in a tough epoxy
seal and are available on tape for high
speed auto placement.
Characteristics -
Mechanical
Seal Cover:
Marking Ink Colour:
Orange
Black
Characteristics -
Cleaning
The washing process is very important to ensure long term reliability because ionic impurity from flux may cause
electrolytic corrosion of the metal film.
Short time Overload:
Rated Voltage x 2.5 maximum Overload Voltage for 5 seconds,
whichever is less
Resistance to Soldering Heat:
260°C ± 5°C, 10 seconds ± 1 second
Solderabililty:
235°C ± 5°C, 3 seconds ± 0.5 second
Key Features
I
I
I
I
I
I
I
I
I
Stable Alumina Substrate
Solvent Resistant Coating
Wide Value Range
Excellent Linearity
Rated Power (%)
Power Derating
100
80
60
40
20
0
-55
-25
0
30
60 70 90
120 125
Ambient Temperature (°C)
∆R
(%)
60
50
40
30
20
10
0
-10
-20
-30
-50
TCR
(ppm/°C)
4500
3300
2400
1600
08 05 Small Size
Stocked in 3900ppm/°C
Other TCR's Available to
Order
Supplied on Tape and Reel
Custom Design Enquiries
Welcome
-25
0
25
50
75
100
125
Ambient Temperature (°C)
Dimensions
d
L
W
Chip
Size
2A-0805
2B-1206
L
W
H
0.5±0.1
0.6±0.1
D
0.4±0.2
0.5±0.3
d
0.35±0.15
0.45±0.15
Weight
/1000
4.54g
9.14g
H
2.0±0.2 1.25±0.2
3.2±0.2 1.60±0.2
D
How to Order
LT73
Common Part
3900
T.C.R
2A
Size
103
Resistance Value
The first two digits
are significant figures
of resistance value
and the third denotes
the number of zeros
following.
e.g. 510R: 511
1K0: 102
3K0: 302
1K0
Tolerance
J
Pack Style
3000ppm/°C
LT73 - Standard
3900ppm/°C
2A - 0.1W
2B - 0.125W
J ±5%
Taped - 4000
on Reel
Literature No. 1773244
Issued: 04-05
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
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