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Features

■ TO-220 housing

■ Low inductance

Applications

■ Power supplies

■ Motor drives

13 %

2 2 5R0 1 01

RIC

■ Ceramic backplane

■ High power rating

■ Test and measurement

■ Recti?ers

■ RoHS compliant*

PWR221T-30 Series Power Resistor

General Information

Bourns ? PWR221T-30 Series is a TO-220 style power resistor made using thick ?lm on alumina ceramic technology. It is used in

current limiting, capacitor discharge or current measurement circuits in power supplies for telecom and industrial applications.

Electrical & Thermal Characteristics

Popular Resistance Values

Parameter

Resistance (See Popular Resistance Values table)

Power Rating @ 25 ?C Case Temperature

Tolerance

TCR

0.100 Ω <R<130.0 K Ω

0.050 Ω <R<0.100 Ω

0.020 Ω <R<0.050 Ω

Thermal Resistance - Rthj

Inductance

Operating Voltage

Dielectric Strength

Insulation Resistance

Operating Temperature

Value(s)

0.02 Ω to 130 K Ω

30 W**

±1 %***, ±5 %

±100 PPM/?C

±300 PPM/?C

±600 PPM/?C

4.2 ?C/W

0.1 μH maximum

√ P*R with a maximum of 250 V

2 KV AC

10 G Ω

-55 ?C to +150 ?C

Code

R020

R025

R030

R033

R040

R050

R075

R100

R150

R200

R250

R300

R330

Resistance

Value

0.02 Ω***

0.025 Ω***

0.03 Ω***

0.033 Ω***

0.04 Ω***

0.05 Ω***

0.075 Ω***

0.1 Ω

0.15 Ω

0.2 Ω

0.25 Ω

0.3 Ω

0.33 Ω

Code

1000

1200

1500

2000

2500

3000

3300

4000

4700

5000

5600

7500

1001

Resistance

Value

100 Ω

120 Ω

150 Ω

200 Ω

250 Ω

300 Ω

330 Ω

400 Ω

470 Ω

500 Ω

560 Ω

750 Ω

1.0 KΩ

** Power rating of 2.25 W when mounted free to air (no heat sink).

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

Reliability Characteristics

R400

R500

R750

1R00

1R50

0.4 Ω

0.5 Ω

0.75 Ω

1Ω

1.5 Ω

1501

2001

2501

3001

3301

1.5 KΩ

2.0 KΩ

2.5 KΩ

3.0 KΩ

3.3 KΩ

Parameter

Short Term Overload (2x Pr for R < 2 Ω ,

1.6 x Pr for R ≥ 2 Ω , V < 1.5 x Operating Voltage)

Load Life (2000 hours at rated power)

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

Resistance to Soldering Heat (10 seconds at

270 ?C)

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

Terminal Strength (MIL-STD-202, Method 211

Test A1)

Shock (Saw Tooth: 100 g/6 ms)

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

High Temperature Exposure

(100 hrs - 40 % Pr @ +125 °C)

Material Characteristics

Resistor ...................................Thick ?lm

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

Speci?cation

Δ R ±0.25 %

Δ R ±1.0 %

Δ R ±0.5 %

Δ R ±0.25 %

Δ R ±0.2 %

Δ R ±0.5 %

Typical Part Marking

2R00

2R50

3R00

3R30

4R00

5R00

7R50

8R00

10R0

12R0

15R0

20R0

25R0

27R0

30R0

33R0

40R0

47R0

50R0

56R0

2Ω

2.5 Ω

3Ω

3.3 Ω

4Ω

5Ω

7.5 Ω

8Ω

10 Ω

12 Ω

15 Ω

20 Ω

25 Ω

27 Ω

30 Ω

33 Ω

40 Ω

47 Ω

50 Ω

56 Ω

4001

5001

7501

1002

1502

2002

2502

3002

3302

4002

4702

5002

5602

6802

7502

8202

1003

1153

1203

1253

4.0 KΩ

5.0 KΩ

7.5 KΩ

10 KΩ

15 KΩ

20 KΩ

25 KΩ

30 KΩ

33 KΩ

40 KΩ

47 KΩ

50 KΩ

56 KΩ

68 KΩ

75 KΩ

82 KΩ

100 KΩ

115 KΩ

120 KΩ

125 KΩ

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

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

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

Packaging

RESISTANCE

CODE

MANUFACTURER'S

TRADEMARK

221 30

R500 1%

902

COSTA RICA

MODEL

NUMBER

TOLERANCE

DATE CODE

COUNTRY

OF ORIGIN

75R0 75 Ω

*** 5 % Tolerance

1303

130 KΩ

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

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and

RoHS Recast 2011/65/EU June 8, 2011.

Speci?cations are subject to change without notice.

Customers should verify actual device performance in their speci?c applications.

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