LT73

linear positive tempco thermistor

applications and ratings

Resistance

Tolerance

T.C.R.

(x10

T.C.R.

Tolerance

2kΩ - 24kΩ

1kΩ - 20kΩ

1kΩ - 13kΩ

510Ω - 4.7kΩ

510Ω - 4.7kΩ

510Ω - 3.0kΩ

510Ω - 3.0kΩ

100Ω - 1kΩ

51Ω - 510Ω

2kΩ - 51kΩ

G: ±2%

150, 250, 350, 450, 500

±15%

±10%

600, 700, 800, 900

1000, 1200, 1400

1600, 1800

2000, 2200, 2400

2600, 2800, 3000

3300, 3600, 3900

4200

4500

J: ±5%

1kΩ - 43kΩ

1kΩ - 27kΩ

1kΩ - 10kΩ

510Ω - 9.1kΩ

510Ω - 6.2kΩ

510Ω - 6.2kΩ

100Ω - 2kΩ

51Ω - 510Ω

Resistance Range

E-24

LT732B

LT732A

Performance Characteristics

Derating Curve

environmental applications

100

80

60

40

20

-20

0

20406080100120140

125

70

Ambient Temperature

(°C)

0

-40

Examples of Temperature

Characteristics of Resistance

60

50

20

10

0

-25

0

255075100

125

Ambient Temperature

(°C)

-30

-50

4500ppm/°C

40

30

-10

-20

3300ppm/°C

2400ppm/°C

1600ppm/°C

T.C.R. Measuring Temperature: +25°C ~ +75°C

Approximate Expression for Resistance-Temperature Characteristics

3000

3300

3600

3900

4200

4500

0.9288

0.0028

0.0041

0.9232

0.9175

0.9099

0.9026

0.8948

T.C.R.

0.0030

0.0032

0.0035

0.0038

185

KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com

Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.

12/19/12

Parameter

Requirement ∆ R ±(% + 0.05Ω)

Limit

Typical

Test Method

Resistance

T.C.R.

25°C

+25°C/+75°C

Within specified

tolerance

Within specified

T.C.R.

—

—

Overload (Short time)

Rated voltage x 2.5 or maximum overload volume for 5 seconds, whichever is lower

±1.0%

±0.23%

Resistance to Solder Heat

260°C ± 5°C, 10 seconds ± 1 second

±1.0%

±0.1%

Rapid Change of Temperature

-40°C (30 minutes)/ +125°C (30 minutes), 5 cycles

±1.0%

±0.1%

Moisture Resistance

40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle

±3.0%

±0.54%

Endurance at 70°C

70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle

±3.0%

±0.62%

Confirming resistance drift is recommended since this product has a tendency to have bigger resistance change than general flat chip over 70°C.

Please pay attention not to be applied ESD, it may cause of resistance change.

Test Items

High Temperature Exposure

125°C, 1000 hours

±0.6%

Low Temperature Exposure

-40°C, 45 minutes

±0.05%

Reference

Test Method

ESD

Human model, 100 pF 1.5 kΩ

500V

Actual Value (Out of Guarantee)

For resistors operated at an ambient temperature

of 70°C or above, a power rating shall be derated

in accordance with the above derating curve.