51

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.

11/13/08

PSI/PSE

chip type power shunt resistor

PMS 300 neg.

Black neg.

Operating

Temperature

Range

Terminal

Temperature

Under a

Rated Load

F: ±1%

Resistance

Range

Part

Designation

Power

Rating

T.C.R.

(ppm/°C)

Max.

applications and ratings

PSI

3W*

PSE

3W*

±75

1m

Ω**, 2mΩ**

±50

3m

Ω, 4mΩ

-65°C to +155°C

+105°C and less

* A power rating shall be guaranteed with a method shown in the item. Please inquire before you order and/or use.

** Under development

Derating Curve

environmental applications

100

80

60

40

20

-60

-40

-20

0

406080 100140

105

20

Ambient Temperature

(°C)

0

-65

120

155

Performance Characteristics

Parameter

Requirement

∆ R

Limit

Typical

Test Method

Overload (Short time)

Rated power x 5 for 5 seconds

±0.2%: PSI

±0.5%: PSE

±0.1%: PSI

±0.2%: PSE

Resistance to Solder Heat

260°C ± 5°C, 15 seconds ± 1 second

±0.5%

±0.1%

Rapid Change of Temperature

-55°C (30 minutes), +125°C (30 minutes), 1,000 cycles

±0.5%

±0.2%

Moisture Resistance

85°C ± 2°C, 85% RH, 1000 hours, 10% Bias

±0.5%

±0.2%

Endurance at 105°C and Less

of Terminal Temperature

Terminal temperature: 105°C, 1000 hours,

1.5 hr ON, 0.5 hr OFF cycle

±1.0%

±0.2%: PSI

±0.6%: PSE

Low Temperature Operation

-65°C, 96 hours

±0.5%

±0.02%: PSI

±0.1%: PSE

High Temperature Exposure

+155°C, 1,000 hours

±1%

±0.4%: PSI

±0.6%: PSE

±150

––

J: ±5%

––

––

1m

Ω

1733 Reader's Spreads pg1-203:document

1/27/09

4:04 PM

Page 49