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THERMAL SENSORS / CIRCUIT PROTECTORS

TECHNOLOGY OF TOMORROW

THERMAL SENSORS

LINEAR PTC, THICK FILM

LA 73

STRUCTURE

Ceramic substrate

Top termination

Bottom termination

Thick film resistor element

Protective layer

End termination

Diffusion barrier (Ni)

Solder plating

IDENTIFICATION

PRODUCT CODE

LA73 1E, 1J

LA73 2A, 2B

COATING COLOR

Orange

MARKING

No marking

Black, 3 digits

Products with Pb-free terminations

meet RoHS requirements

TYPE DESIGNATION (HOW TO ORDER)

Old Part No.

New Part No.

(Pb-free)

Specifications given herein may be changed at any time without prior notice.

Please confirm technical specifications before you order and/or use.

LA73

PRODUCT CODE

600

STYLE

1E, 1J, 2A, 2B

(1E only with

termination ”T”)

TERMINATION

RESISTANCE

TOLERANCE SURFACE MATERIAL

T: Sn

L: Sn/Pb

TAPING*

TP, TD, BK

*Please see “PACKAGING”

1K2

122

NOMINAL

RESISTANCE

3 digits

RESISTANCE

TOLERANCE

J: ±5%

0600

T.C.R.

(ppm/K)

4 digits

T.C.R.

(ppm/K)

FEATURES

■

Resistance value changes in linear positive way to temperature

Quick response to the change of temperature

Anti-leaching nickel barrier terminations

15 specific temperature coefficients

Meets or exceeds IEC 60115-8, JIS C 5201-8

Rated ambient temperature: + 70° C

Operating temperature range: - 55° C ... + 125° C

Suitable for reflow and wave soldering

DIMENSIONS (mm)

SIZE

0402

0603

0805

1206

TYPE

LA73 1E

LA73 1J

LA73 2A

LA73 2B

1.0 ± 0.1

1.6 ± 0.2

2.0 ± 0.2

3.2 ± 0.2

0.5 ± 0.1

0.8 ± 0.1

1.25 ± 0.1

1.6 ± 0.2

0.2 ± 0.1

0.3 ± 0.1

0.4 ± 0.2

0.5 ± 0.3

0.25 ± 0.1

0.3 ± 0.1

+0.2

0.3 ±

0.2

–0.1

+0.2

0.4 ±

0.2

–0.1

t ± 0.1

0.35

0.45

0.5

0.6

RATING

SIZE

0402

0603

0805

1206

TYPE

LA73

POWER*

RATING

0.016W

0.063W

0.1W

0.125W

THERMAL

DISSIPATION

CONSTANT

6.8 mW/K

7.6 mW/K

8.2 mW/K

9 mW/K

MAX.

WORKING

VOLTAGE

10 V

25 V

50 V

TEMPERATURE CHARACTERISTICS

Resistance changing rate (%)

*For resistors operated at an ambient temperature of +70°C or above, the power rating shall be derated.

Temperature (°C)

TCR AND RESISTANCE RANGE

T.C.R.*

(ppm/K)

600

800

1000

1200

1400

1600

1800

2000

2200

2400

2600

2800

3000

3300

3600

T.C.R.

TOLERANCE

± 150 ppm/K

RESISTANCE RANGE • E12

1E (0402)

1.2 kΩ ~ 2.2 kΩ

––

1J (0603)

––

~ 10 kΩ

~ 6.8 kΩ

~ 4.7 kΩ

~ 3.9 kΩ

~ 2.7 kΩ

~ 1.8 kΩ

~ 1.2 kΩ

~ 390

Ω

~ 220

Ω

~ 120

Ω

~ 82

Ω

2A (0805)

––

~ 10 kΩ

~ 6.8 kΩ

~ 4.7 kΩ

~ 3.9 kΩ

~ 2.7 kΩ

~ 1.8 kΩ

~ 1.2 kΩ

~ 390

Ω

~ 220

Ω

~ 120

Ω

~ 82

Ω

2B (1206)

––

1 kΩ ~ 10 kΩ

680

Ω

~ 6.8 kΩ

470

Ω

~ 4.7 kΩ

470

Ω

~ 3.9 kΩ

330

Ω

~ 2.7 kΩ

330

Ω

~ 2.7 kΩ

220

Ω

~ 1.8 kΩ

220

Ω

~ 1.2 kΩ

100

Ω

~ 1.2 kΩ

100

Ω

~ 390

Ω

~ 220

Ω

~ 120

Ω

~ 82

Ω

RESISTANCE

TOLERANCE

± 200 ppm/K

± 10%

1 kΩ

680

Ω

470

Ω

470

Ω

330

Ω

330

Ω

220

Ω

220

Ω

100

Ω

100

Ω

1 kΩ

680

Ω

470

Ω

470

Ω

330

Ω

330

Ω

220

Ω

220

Ω

100

Ω

100

Ω

J (± 5%)

* T.C.R. Measuring Temperature + 25° C / + 75° C

The resistance value of this resistor changes by its self-heating by power applied. Therefore, it is recommended to take its self-heating into consideration.

Care must be taken that the resistors may be damaged by occurrence or application of the static electricity in equipment assembling processes.

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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THERMAL SENSORS

CIRCUIT PROTECTORS