Temperature of Backplate (

°C)

100

80

120

60

40

20

0

-20

25

35

75

55

45

95

105

65

85

115 125 135 145 155

Features

backplate

Applications

Electrical & Thermal Characteristics

PWR220T-20 Series Power Resistor

*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

General Information

is used in current measurement, snubber, bleeder and discharge circuits.

Parameter

Value(s)

Resistance (See table of standard values)

0.02

Ω to 130 KΩ

Power Rating @ 25 ˚C Case Temperature

20 W

Tolerance

±1 %**,

±5 %

TCR

0.02

Ω<R<130.0K Ω

±100 PPM/˚C

Thermal Resistance - Rthj

6.5 ˚C/W

Inductance

0.1 µH maximum

Operating Voltage

√P*R with a maximum of 250 V

Dielectric Strength

2 KV AC

Insulation Resistance

10 G

Ω

Operating Temperature

-55 ˚C to 155 ˚C

Material Characteristics

Resistor .................................. Thick film

Substrate ......................Alumina (AL203)

Housing ........................................Epoxy

Pins.................... Tinned Copper (Sn/Cu)

Flammability ........Conforms to UL-94V0

Derating Curve

Reliability Characteristics

Parameter

Specification

Short Term Overload (2x Pr for R < 2

Ω,

1.6 x Pr for R

≥ 2 Ω, V < 1.5 x Operating Voltage)

ΔR ±0.25 %

Load Life (1000 hours at rated power)

ΔR ±1.0 %

Thermal Shock (-55 ˚C to 155 ˚C, 5 cycles)

ΔR ±0.5 %

Resistance to Soldering Heat (10 seconds at 270 ˚C)

ΔR ±0.5 %

Vibration (20 G 10-2000 Hz .06 ” D.A.)

ΔR ±0.25 %

Terminal Strength (MIL-STD-202, Method 211

Test A1)

ΔR ±0.2 %

Shock (Saw Tooth: 100 g/6 ms)

ΔR ±0.5 %

Humidity (Steady State) 1000 hrs. 85 °C/85 % RH

ΔR ±0.5 %

High Temperature Exposure

(100 hrs - 40 % Pr @ +125 °C)

ΔR ±0.5 %

Standard Resistance Values

Code

Resistance

Value

Code

Resistance

Value

R020

0.02***

20R0

20

R050

0.05***

30R0

30

R100

0.1

33R0

33

R500

0.5

47R0

47

R750

0.75

50R0

50

1R00

1

56R0

56

1R50

1.5

75R0

75

2R00

2

1000

100

2R20

2.2

2000

200

2R50

2.5

3300

330

3R00

3

4700

470

3R30

3.3

7500

7500

4R70

4.7

1001

1000

5R00

5

3301

3300

7R50

7.5

1002

10000

8R20

8.2

3002

33000

10R0

10

1003

100000

15R0

15

1303

130000

Typical Part Marking

220

20

R500 1%

902

COSTA RICA

MANUFACTURER'S

TRADEMARK

MODEL

NUMBER

RESISTANCE

CODE

TOLERANCE

DATE CODE

COUNTRY

OF ORIGIN

Packaging

............................................50 pcs./tube

220

20

3302

1%

923

COST

A RICA

** Available for most values. Check Standard Resistance Values table.

*** 5 % Tolerance