W21 2K7 JI Welwyn Components, W21 2K7 JI Datasheet

RESISTOR, WW 3W 5% 2K7

W21 2K7 JI

Manufacturer Part Number
W21 2K7 JI
Description
RESISTOR, WW 3W 5% 2K7
Manufacturer
Welwyn Components
Series
W21r
Datasheet

Specifications of W21 2K7 JI

Resistance
2.7kohm
Resistance Tolerance
± 5%
Power Rating
2.5W
Voltage Rating
100V
Resistor Element Material
Wirewound
No. Of Pins
2
Svhc
No SVHC
Temperature Coefficient
± 75ppm/°C
Resistor Case Style
Axial
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Vitreous Enamelled
Wirewound Resistors
W20 Series
Electrical Data
Physical Data
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
© Welwyn Components Limited
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Commercial
Power rating at 25°C
Resistance range at
TCR (-55° to 200°C)
Approved BS CECC 40-201-002
Power rating at 25°C
Power rating at 70°C
Resistance range at
TCR (-55° to 200°C)
Applicable to commercial and approved ranges
Limiting element voltage
Standard values
Thermal impedance
Ambient temperature range
Dimensions (mm) and Weight (g)
Type
W21
W215
W22
W23
W24
CECC approved
Suitable for harsh environments
Impervious lead free vitreous enamel coating
Overload characteristics ideal
for protection circuits
High stability and reliability
High power dissipation for size
400
300
200
100
0
0
W21
Dissipation – Watts
5
W215
L max
22.0
38.0
53.5
12.7
22.0
W22
10
W23
1% tolerance
2% tolerance
5% tolerance
1% tolerance
2% tolerance
5% tolerance
D max
15
5.6
7.0
8.0
8.0
8.0
W24
20
· Bedlington, Northumberland NE22 7AA, UK
22.75
f min
23.1
23.1
-
-
Construction
A high purity ceramic substrate is assembled with interference fit end caps to which are
welded the termination wires. The resistive element is wound on the substrate and welded to
the caps; the vitreous enamel protective coating is then applied.
Terminations
Material
Strength
Solderability
Length
Marking
The resistors are legend marked with type reference, resistance value and tolerance. Values are
marked in accordance with IEC 62.
d nom
0.8
0.8
0.8
0.8
0.8
Wt.nom
ppm/°C
°C/watt
Copper clad steel wire, nickel plated and solder-coated.
The terminations meet the requirements of IEC 68.2.21.
The terminations meet the requirements of IEC 115-1,– Clause 4.17.3.2.
W23’s and W24’s are not supplied on tape. Minimum lead length is 30 mm.
3.5
pp/°C
1
2
2
5
watts
ohms
ohms
ohms
watts
watts
ohms
ohms
ohms
Style
volts
°C
0R1 to 10K
0R5 to 10K
0R5 to 10K
0R1 to 10K
1R to 10K
1R to 10K
W21
3.0
2.9
2.5
100
JB
88
≥5 ohms < 10 ohms: ±400
Typically: <+75
E24 preferred. Other values to special order
0R1 to 15K
0R5 to 15K
0R5 to 15K
0R1 to 15K
1R to 15K
1R to 15K
d
W215
5.0
HB
5.0
4.3
160
58
D
0R5 to 22K
0R1 to 22K 0R15 to 60K 0R2 to 100K
0R5 to 20K
0R1 to 20K 0R15 to 56K 0R2 to 100K
1R to 20K
1R to 22K
-55 to 200
Welwyn Components
W22
7.0
7.0
6.0
200
KB
44
L
Maximum: +200
≥10 ohms: ±200
1R to 60K
1R to 60K
1R to 56K
1R to 56K
W23
10.0
10.0
500
9.0
LB
29
f
TT electronics plc
1R to 100K
1R to 100K
1R to 100K
1R to 100K
Issue C · 04.03
A subsidiary of
W24
14.0
14.0
12.0
MB
750
22
85

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W21 2K7 JI Summary of contents

Page 1

... Dissipation – Watts General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn’s own data and is considered accurate at time of going to print. © Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com ...

Page 2

... Ambient temperature °C © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com 86 Flammability All materials used in the construction of ‘W’ series resistors are inorganic and inherently non burning. ...

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