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Temperature Sensing Chip Resistor (P.T.C. Thermistor)

Type LT73 Series

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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Key Features

Order

Welcome

Type LT73 Series

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 -

Electrical

Characteristics -

Mechanical

0805 Size (2A)

1206 Size (2B)

Resistance Range:

510R - 3K0

510R - 6K2

Resistance Tolerance:

±5%

±5%

Rated Power at 70°C:

0.1 watt

0.125 watt

50 volts

75 volts

100 volts

150 volts

Operating Temperature Range:

-40°C ~ +125°C

-40°C ~ +125°C

TCR Measuring Temperature:

+25°C ~ +75°C (See Graph)

+25°C ~ +75°C (See Graph)

TCR Tolerance:

± 10%

± 10%

Insulation Resistance:

More than 10 Meg

More than 10 Meg

Dimensions

Seal Cover:

Orange

Marking Ink Colour:

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

LT73

3900

2A

103

1K0

J

Common Part

3000ppm/°C

3900ppm/°C

T.C.R

Size

LT73 - Standard

2A - 0.1W

2B - 0.125W

ResistanceValue

J ±5%

Tolerance

Pack Style

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

Taped - 4000

on Reel

How to Order

Chip

LW

H

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Weight

Size

/1000

2A-0805

2.0±0.2

1.25±0.2

0.5±0.1

0.4±0.2

0.35±0.15

4.54g

2B-1206

3.2±0.2

1.60±0.2

0.6±0.1

0.5±0.3

0.45±0.15

9.14g

Power Derating

-50

-25

0

25

50

75

100

125

Ambient Temperature (°C)

60

50

40

30

20

10

0

-10

-20

-30

4500

3300

2400

1600

TCR

(ppm/°C)

-55

-25

0

30

60 70

90

120 125

100

80

60

40

20

0

Ambient Temperature (°C)