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NWW31.781%R

Description
RESISTOR, WIRE WOUND, 3W, 1%, 50ppm, 1.78ohm, THROUGH HOLE MOUNT, AXIAL LEADED, ROHS COMPLIANT
CategoryPassive components    The resistor   
File Size95KB,3 Pages
ManufacturerSEI(Stackpole Electronics Inc.)
Websitehttps://www.seielect.com/
Environmental Compliance
Download Datasheet Parametric View All

NWW31.781%R Overview

RESISTOR, WIRE WOUND, 3W, 1%, 50ppm, 1.78ohm, THROUGH HOLE MOUNT, AXIAL LEADED, ROHS COMPLIANT

NWW31.781%R Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerSEI(Stackpole Electronics Inc.)
package instructionAXIAL LEADED, ROHS COMPLIANT
Reach Compliance Codecompli
ECCN codeEAR99
Other featuresNON-INDUCTIVE, PRECISION
JESD-609 codee3
Manufacturer's serial numberWW
Installation featuresTHROUGH HOLE MOUNT
Number of terminals2
Maximum operating temperature275 °C
Minimum operating temperature-55 °C
Package shapeTUBULAR PACKAGE
method of packingTR
Rated power dissipation(P)3 W
Rated temperature125 °C
resistance1.78 Ω
Resistor typeFIXED RESISTOR
surface mountNO
technologyWIRE WOUND
Temperature Coefficient50 ppm/°C
Terminal surfaceTin (Sn)
Terminal shapeWIRE
Tolerance1%
WW/MWW Series
General Purpose and Precision Wirewound
Features:
Stackpole Electronics, Inc.
Resistive Product Solutions
WWS offers miniature size at higher power rating
High performance for low cost
High power to size ratio
MWW – Completely molded construction with welded
terminations tested to MIL-R-39007
Complete welded terminations
Tinned copper leads
Available in non-inductive styles
High temperature silicone coating
RoHS compliant / lead-free
Electrical Specifications
Type / Code
WW H
WW 1 / WWS 2
WW 1A
WW 2 / WWS 3
WW 2A
WW 3 / WWS 4
WW 3A
WW 4 / WWS 5
WW 5 / WWS 7
WW 7
WW 7B / WWS 10
WW 10
MWW 1
MWW 3
MWW 5
MWW 10
MIL-R-26 Ref.
-
-
RW-70
RW-69
-
RW-79
-
-
RW-67, RW-74
-
-
RW-78
RW-70
RW-79
RW-67, RW-74
RW-68, RW-74
Dielectric
Power Rating (Watts)
Strength
(V)
@ 125ºC (U) @ 25ºC (V)
500V
500V
500V
1,000V
1,000V
1,000V
1,000V
1,000V
1,000V
1,000V
1,000V
1,000V
1,000V
1,000V
1,000V
1,000V
0.4W
1W
1W
1.5W
2.5W
3W
3W
4W
5W
6.5W
7W
10W
1W
3W
5W
10W
0.6W
1.2W
1.5W
2.5W
3W
3.7W
4W
5W
6W
8.5W
9W
13W
1.5W
3.75W
6.5W
13W
>10Ω = ±20ppm/ºC
1Ω to 10Ω = ±50ppmºC
< 1Ω = ±90ppm/ºC
Resitance Temperature
Coefficient
Ohmic Range(Ω) and Tolerance(1)
0.1%, 0.5%, 1% & 5%
Standard
0.1 - 2K
0.1 - 3K
0.1 - 7K
0.1 - 10K
0.1 - 15K
0.1 - 22K
0.1 - 30K
0.1 - 40K
0.1 - 50K
0.1 - 70K
0.1 - 100K
0.1 - 150K
0.1 - 2K
0.1 - 20K
0.1 - 40K
0.1 - 150K
Non-Inductive
0.1 - 1K
0.1 - 1.5K
0.1 - 3.5K
0.1 - 5K
0.1 - 7.5K
0.1 - 11K
0.1 - 15K
0.1 - 20K
0.1 - 25K
0.1 - 35K
0.1 - 50K
0.1 - 75K
-
-
-
-
(1) Lesser of√PR or maximum working voltage
How to Order
SEI Type
Code
Nominal
Resistance
Tolerance
Packaging
WW
Type
WW
WWS
MWW
NWW
Description
Standard
Mini
Molded
Non-Inductive
1
1A
2
2A
3
3A
1
Code
4
5
7
7B
10
H
10K
1%
Tolerance
0.1%
0.5%
1%
5%
R
Types
WW H, WW 1, WWS2, WW 1A, MWW 1
WW 2, WWS3, WW 2A, WW 3, WWS4,
WW 4, WWS5, MWW 3
WW 3A
WW 5, WWS7, WW 7, WW 7B, WWS10,
WW 10, MWW 5
WW 10, MWW 10
Qty
2,500
2,000
5,000
500
250
11" Flange
R
Description
Code
Rev Date: 04/23/2010
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
79
www.seielect.com
marketing@seielect.com
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