POWER TYPE RESISTORS
wirewound
miniature type
power
rw
STRUCTURE
Insulation coating
Resistive element (wire)
Lead wire
Electrode cap
Ceramic core
POWER TYPE
RESISTORS
1
2
3
4
5
Identification
produCt code
marking
coating color
RW
Black
Alpha Numeric
(Type, R-value and
tolerance)
All these products have Pb-free terminations and
meet EU-RoHS and China-RoHS requirements
TYPE DESIGNATION (HOW TO ORDER)
T
2611
F
PRODUCT
CODE
POWER RATING
Termination
Surface
Material
NOMINAL
RESISTANCE
RESISTANCE
TOLERANCE
D, F: 4 digits
H, J: 3 digits
D: (±0.5%), F: (±1%)
H: (±3%), J: (±5%)
Unit: Watt
1/2 … 10
T: Sn
DIMENSIONS (mm)
Features
■
■
■
■
■
■
■
■
■
Wirewound high power type resistor (0.5W to 10W)
Precision type resistor in a wide resistance range with light tolerances
Excellent long term stability
Excellent environment performance
Tolerance ±0.1% is available on request
Meets or exceeds MIL-R-26E (U and V characteristics) and surface temp.
(hot spot) 350 °C max.
Rated ambient temperature: +25°C
Operating temperature range: -55°C … +275°C (characteristics U)
Operating temperature range: -55°C … +350°C (characteristics V)
DERATING CURVE
1
2
TYPE
L
RW 1/2 T
RW 1 T
RW 2 T
RW 3 T
RW 5 T
RW 7 T
RW 10 T
8 ± 1.0
10.5 ± 1.0
13 ± 1.0
16.5 ± 1.0
22 ± 1.0
31.5 ± 1.0
46 ± 1.5
øD
ø d (nominal)
l
0.5
0.5
0.8
1.0
1.0
1.0
1.0
38 ± 3
+ 1.0
- 0
1.6
2.7 ± 1.0
5.2 ± 1.0
6.4 ± 1.0
7.8 ± 1.5
7.8 ± 1.5
9.3 ± 1.5
SURFACE TEMPERATURE RISE
Characteristic U: Recommended maximum power rating for best long term
stability. Allows 275°C hot spot and ±0.5% load life stability.
Characteristic V: Increased power rating allows 350°C hot spot and ±3% ∆R after
2000 Hrs load life stability.
RATING
T.C.R.
(ppm/K)
TYPE
RW 1/2 T
RW 1 T
RW 2 T
RW 3 T
RW 5 T
RW 7 T
RW 10 T
±90: R<1Ω
±50: 1Ω≤R<10Ω
±20: R≥10Ω
POWER RATING* (at 25°C)
CHARACTERISTICS
V
U
0.5 W
––
1 W
––
2 W
3 W
3 W
5 W
5 W
7 W
7 W
10 W
10 W
14 W
MAX.
WORKING
VOLTAGE
MAX.
OVERLOAD
VOLTAGE
80 V
130 V
140 V
200 V
400 V
600 V
1000 V
150 V
300 V
500 V
600 V
700 V
800 V
1500 V
RESISTANCE RANGE AND TOLERANCE**
D(±0.5%) • F(±1%)
H(±3%) • J(±5%)
E24 & 25, 50 x 10n
E24 • E96 & 25, 50 x 10n
10 Ω ... 2.61 kΩ
0.47 Ω... 2.7 kΩ
1 Ω... 5.11 kΩ
0.1 Ω... 5.1 kΩ
1 Ω... 10 kΩ
0.1 Ω... 10 kΩ
1 Ω... 15 kΩ
0.1 Ω... 15 kΩ
1 Ω... 30.1 kΩ
0.1 Ω... 30 kΩ
1 Ω... 45.3 kΩ
0.1 Ω... 47 kΩ
1 Ω... 60.4 kΩ
0.1 Ω... 62 kΩ
* For resistors operated at an ambient temperature of +25°C or above, the power rating shall be derated in accordance with the above derating curve.
** Tolerance ±0.1% is available on request.
Rated voltage = Power rating x resistance value or max. working voltage, whichever is lower.
z
EUROPE GmbH • Kaddenbusch 6 • D-25578 Dägeling / ITZEHOE • PHONE: +49 (0) 48 21 / 89 89-0 • FAX: +49 (0) 48 21/ 89 89 89 • Internet: www.koaeurope.de
124
Revision: 14. Dec. 2009
Specifications given herein may be changed at any time without prior notice.
Please confirm technical specifications before you order/or use.
1/2
Contact our sales representatives before you use our products for applications including
automotives, medical equipment and aerospace equipment. Malfunction or failure of the
products in such applications may cause loss of human life or serious damage.
Contact us when you have control request for environmental hazardous
material other than the substance specified by EU-RoHS
RW
