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 manufac-
tured 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 compensa-
tion 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
■
■
■
■
■
■
■
■
■
Stable Alumina Substrate
Solvent Resistant
Coating
Wide Value Range
Excellent Linearity
08 05 Small Size
Stocked in 3900ppm/°C
Other TCR's Available
to Order
Supplied on Tape
and Reel
Custom Design
Enquiries Welcome
Rated Power (%)
Power Derating
100
80
60
40
20
0
-55
-25
0
30
60 70 90
120 125
Ambient Temperature (°C)
60
50
40
30
ΔR (%)
20
10
0
-10
-20
-30
-50
-25
0
25
50
75
100
TCR
(ppm/°C)
4500
3300
2400
1600
125
Ambient Temperature (°C)
Dimensions
W
d
L
Chip
Size
L
W
1.25±0.2
1.60±0.2
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
D
2A-08.05
2.0±0.20
2B-12.06
3.2±0.20
How to Order
LT73
Common Part
3900
T.C.R
2A
Size
1R0
ResistanceV
alue
0.1 ohm
(100 milli ohms)
R10
LT73 - Standard
3000ppm/°C
3900ppm/°C
2A - 0.1W
2B - 0.125W
1 ohm
(1000 milli ohms)
1R0
1K ohm
(1000 ohms)
1K0
J ±5%
J
Tolerance
TE
Pack Style
2A (0805) - TE -
Taped 4000 per
Reel
2B (1206) - TD -
Taped 5000 per
Reel
Literature No. 1773244
Issued: 07-08
Dimensions are shown for
reference purposes only.
Dimensions are in
millimetres unless
otherwise specified.
Specifications subject to
change.
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