USS 2-T220 22.00 OHM 0.1% 3PPM Riedon, USS 2-T220 22.00 OHM 0.1% 3PPM Datasheet - Page 2
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USS 2-T220 22.00 OHM 0.1% 3PPM
Manufacturer Part Number
USS 2-T220 22.00 OHM 0.1% 3PPM
Description
RES 22 OHM 10W .1% FOIL SMD
Manufacturer
Riedon
Series
USSr
Datasheet
1.USS_2-T220_1.00_OHM_0.1_3PPM.pdf
(3 pages)
Specifications of USS 2-T220 22.00 OHM 0.1% 3PPM
Resistance (ohms)
22
Power (watts)
10W
Composition
Metal Foil
Temperature Coefficient
±3ppm/°C
Tolerance
±0.1%
Size / Dimension
0.500" L x 0.400" W (12.70mm x 10.16mm)
Height
0.157" (4.00mm)
Lead Style
Surface Mount (SMD - SMT)
Package / Case
TO-220
Resistance In Ohms
22.0
Case
TO-220
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Riedon Inc.
USR UNR
USS UNS
Precision Foil Resistors
120
100
Dimension
80
60
40
20
0
25
A
B
C
D
E
F
G
H
K
USS 2-T220 / UNS 2-T220
J
I
-200
-400
-600
-800
800
600
400
200
Temperature of the backplate(°C)
2-T220
0
2-T220 / T220B / T221
50
300 Cypress Avenue
12.70
10.16
14.60
15.00
17.33
0.76
5.08
4.00
1.20
0.40
1.85
mm
-5ppm/K
85
-50
100
(±mm)
tol.
0.2
0.2
0.1
0.1
0.1
0.1
0.2
0.2
0.2
0.1
0.1
-25
115
SPECIFICATIONS
inches
130
0.50
0.40
0.03
0.20
0.16
0.05
0.57
0.59
0.68
0.02
0.07
Temperature Coefficient
0
145
Alhambra CA 91801
www.riedon.com
(±inches)
Temperature (°C)
0.008
0.008
0.004
0.004
0.004
0.004
0.008
0.008
0.008
0.004
0.004
Dimensions
tol.
25
155
Derating
50
Power Rating Notes -
The U-Series Resistors must be attached to a suitable heatsink.
The maximum internal resistor temperature is 155°C.
To specify an appropriate heatsink use the following formula :
R
Where: R
(continued)
75
qH
= T
P
MAX
100
R
T
T
P = Power Through Resistor ( W )
Dimension
A
MAX
(626) 284-9901
qH
qR
= Ambient Temperature of Heatsink ( °C )
- ( P x R
= Thermal Resistance of Heatsink ( K/W )
= Thermal Resistance of Resistor ( K/W )
= Maximum Temperature of Resistor
C
D
A
B
E
F
125
qR
12.10
18.33
) - T
11.16
5.08
1.76
3.20
mm
A
Nominal Spread
±2.3ppm/K
Nominal ∆R/R
Nominal Spread
±2.3ppm/K
+5ppm/K
inches
0.476
0.439
0.722
0.200
0.069
0.126
(626) 284-1704
Page 125
rev. 03/2006A