1624338-2 Datasheet, PDF (1/1 Pages) Tyco Electronics – Temperature Sensing Chip Resistor

Temperature Sensing Chip Resistor
(P.T.C. Thermistor)
Type LT73 Series
Type LT73 Series
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.
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
Characteristics -
Electrical
Resistance Range:
Resistance Tolerance:
Rated Power at 70°C:
Max. Working Voltage @ TA 70°C:
Max. Overload Voltage @ TA 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
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
Power Derating
100
80
60
40
20
0
-55
-25 0 30 60 70 90 120 125
Ambient Temperature (°C)
Dimensions
60
50
40
30
20
10
0
-10
-20
-30
-50
-25 0 25 50 75 100
Ambient Temperature (°C)
TCR
(ppm/°C)
4500
3300
2400
1600
125
d
L
W
Chip
Size
L
W
H
D
d
Weight
/1000
2A-08.05 2.0±0.20 1.25±0.2 0.5±0.1 0.4±0.2 0.35±0.15 4.54g
2B-12.06 3.2±0.20 1.60±0.2 0.6±0.1 0.5±0.3 0.45±0.15 9.14g H
D
How to Order
LT73
3900
2A
1R0
J
TE
Common Part
T.C.R
LT73 - Standard
3000ppm/°C
3900ppm/°C
Size
2A - 0.1W
2B - 0.125W
Resistance Value
0.1 ohm
(100 milli ohms)
R10
1 ohm
(1000 milli ohms)
1R0
1K ohm
(1000 ohms)
1K0
Tolerance
J ±5%
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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