WSM26801FLFTR [TTELEC]
Molded Surface Mount Wirewound Resistor; 模塑表面贴装绕线电阻器
| 型号： | WSM26801FLFTR |
| 厂家： | 
TT Electronics |
| 描述： | Molded Surface Mount Wirewound Resistor |
| 文件： | 总3页 (文件大小：149K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Molded Surface Mount
Wirewound Resistor
WSM Series
• Flexible Terminations
• All welded construction
• Ideal for automatic pick and place
• Lead free, RoHS compliant construction available
• Contact factory for ohmic values above published ranges
Electrical Data
Power Rating Resistance Maximum Working
Resistance
Tolerance
(%)
Ambient
Temperature
(°C)
IRC
TCR
(ppm/°C)
Standard
Values
@ 70°C
(watts)
Range
(ohms)
Voltage
(volts)
Type
WSM-1
WSM-2
WSM-3
1W
2W
3W
0.01 to 1K
0.01 to 2K
0.01 to 3K
0.1Ω - <10Ω: 100
≥1Ω: 20
E24
Preferred
*1, 2, 5, 10
-55 to 155
√P x R
*Note: 5% or 10% preferred below 0.1 ohms.
CONSTRUCTION
A high purity ceramic substrate is assembled with interference fit end caps to which are welded the terminations.
The resistive element is wound on the substrate and welded to the caps. The unit is then molded.
FLAMMABILITY
The resistor coating is categorized as flame retardant epoxy under UL-94.
SOLVENT RESISTANCE
The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed
circuits.
MARKING
WSM resistors are legend marked with type, value and tolerance.
General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
WSM Series Issue December 2008 Sheet 1 of 3
Molded Surface Mount
Wirewound Resistor
Recommended Pad Sizes
B
C
A
B
Dimensions (Inches & mm))
B
Type
A
C
D
0.115
(2.9)
0.100
(2.6)
0.189
(2.9)
0.389
(9.9)
WSM-1
0.134
(3.4)
0.158
(4.0)
0.237
(6.0)
0.552
(14.0)
WSM-2
WSM-3
0.134
(3.4)
0.178
(4.5)
0.434
(11.0)
0.788
(20.0)
Physical Data
L
L
l
l
W
W
W
W
H
H
Dimensions (Inches & mm))
Type
L
l
W
w
H
0.310 max
(7.9 max)
0.100 nom
(2.54 nom)
0.275 max
(7.0 max)
0.165 max
(4.2 max)
0.155 max
(3.94 max)
WSM-1
0.473 max
(12 max)
0.122 nom
(3.1 nom)
0.413 max
(10.5 max)
0.260 max
(6.6 max)
0.217 max
(5.5 max)
WSM-2
WSM-3
0.709 max
(18 max)
0.122 nom
(3.1 nom)
0.630 max
(16 max)
0.276 max
(7 max)
0.256 max
(6.5 max)
Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
WSM Series Issue December 2008 Sheet 2 of 3
Molded Surface Mount
Wirewound Resistor
Environmental Data
Characteristics
WSM-1
WSM-2
WSM-1
Load at Rated Power: 1000 hours @ 70°C
∆R%
∆R%
∆R%
2 ± 0.001Ω
2 ± 0.001Ω
3 ± 0.001Ω
Dry Heat:
1000 hours @ 155°C
2 ± 0.001Ω
2 ± 0.001Ω
2 ± 0.001Ω
zero at 155°C
1 ± 0.001Ω
1 ± 0.001Ω
1 ± 0.001Ω
1,000
3 ± 0.001Ω
Short Term Overload
Derating from Rated Power @ 70°C
Moisture
∆R%
∆R%
∆R%
volts
1 ± 0.001Ω
1.5 ± 0.001Ω
Temperature Cycling
Resistance to Solder Heat
Isolation Voltage
Insulation Resistance
ohms
>1000M
Substrate Bend
∆R%
0.2 ± 0.001Ω
*Note: The power ratings to be applied depend upon the board used and the ambient temperature.
Ordering Data
Standard Quantities Per Package
Specify type, reference, etc. as indicated in this example of a
WSM3 6801 F resistor with tape and reel packaging.
Type
Code
WSM1
WSM2
WSM3
13" Reel
(330mm)
Sample Part No.
WSM3 6801
F
LF
TR
R
1500
800
750
IRC Type
(WSM1, WSM2, WSM3)
Packaging:
Resistance Value
WSM2 resistors are supplied on .945 (24mm) wide
carrier tape.
(100Ω and greater - First 3 significant digits plus
4th digit multiplier) Example: 100Ω = 1000, 1000Ω = 1001,
150,000Ω = 1503 (Less than 100Ω - "R" is used to designate
decimal) Example: 51Ω = 51R0, 1Ω = 1R00, 0.25Ω = R250
WSM3 resistors are supplied on 1.26 (32mm) wide
carrier tape.
Tolerance
(K = 10%, J = 5%, G = 2%, F = 1%)
Both products are reeled onto 13.00 (330mm)
diameter reels.
Lead Free, RoHS Designator
Packaging Code
(TR = 13" Reel)
*For packaging information, see Appendix "A".
Dimensions (Inches and (mm))
Ao
Bo
Ko
W
P
T
A0
P
K0
.165
(4.2)
.300
.165
.630
.315
.014
WSM1
WSM2
WSM3
(7.62) (4.20) (16.0) (8.00) (0.36)
B0
W
.266
.470
.206
.945
.473
.014
(6.75) (11.95) (5.22) (24.0) (12.0) (0.36)
.288
(7.3)
.721
(18.3)
.264
(6.7)
1.26
(32.0) (12.0)
.473
.016
(0.4)
t
Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
WSM Series Issue December 2008 Sheet 3 of 3
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