Features

requirements

Applications

W Series Wirewound Power Resistor

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

Specifications are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their specific applications.

Electrical Characteristics

Resistance Range ................................................ See Popular Resistance Values Table

Tolerance ....................................................................................................................5 %

Operating Temperature.........................................................................-55 °C to +200 °C

Temperature Coefficient .............................................................................. ±300 ppm/°C

Maximum Voltage ....................................................................................................√P*R

Non-inductive version is available upon request.

Physical Characteristics

Resistor .................................................................... Low thermal resistant ceramic core

Lead Wire ......................................................................................Tin-plated copper wire

Coating Material ............................................................... Meets UL 94V-0 requirements

Environmental Characteristics

Test

Conditions

Specification

Short Time Overload

2.5 times rated voltage

ΔR/R≤±(2 % ± 0.05 Ω)

for 5 seconds.

Solderability

245 ±3 °C for 2.5 ±0.5 seconds.

Over 95 % coverage

Resistance to

260 ±5 °C for 10 ± 1 seconds.

ΔR/R≤±(1 % + 0.05 Ω)

Solder Heat

Dielectric Strength

Test voltage >500 Vrms for

Pass

>1 minute.

Insulation Resistance

Test voltage >500 Vrms for

Ω

1 minute.

40 ±2 °C, 90 to 95 %.

Load Life Humidity

1.5 hours ON, 0.5 hours OFF for

ΔR/R≤ ±(5 % + 0.05 Ω)

1000 hours at rated power.

70 ±2 °C.

Load Life

1.5 hours ON, 0.5 hours OFF for

ΔR/R≤±(5 % + 0.05 Ω)

1000 hours at rated power.

Packaging Specifications

Model

Style

Qty. per

Box

(Pcs.)

Min.

Order

Quantity

(Pcs.)

W1M

Ammo

Pack

1,000

5,000

W2M

W3M

W5M

Ammo

Pack

500

2,000

W7M

W9M

Bulk in

Box

25 / 200

2,000

W10M

Popular Resistance Values

Code

R Value

15R0

15 Ω

22R0

22 Ω

33R0

33 Ω

39R0

39 Ω

47R0

47 Ω

Code

R Value

56R0

56 Ω

82R0

82 Ω

1000

100 Ω

1200

120 Ω

1500

150 Ω

Other E24 resistance values available upon request.

How to Order

W 3 M 22R0 J

Product Series

W = Wirewound

Power Rating

1 = 1 Watt

2 = 2 Watts

3 = 3 Watts

5 = 5 Watts

7 = 7 Watts

9 = 9 Watts

10 = 10 Watts

Pin Style

M = Axial Miniaturized Version

Resistance Code

• R<100 ohms:

“R” represents decimal point

(examples: 56R0 = 56 ohms)

• R

≥100 ohms:

First three digits are significant,

fourth digit represents number of

zeros to follow

(example: 1500 = 150 ohms)

Resistance Tolerance

J = ±5 %