USS4-T220 [RIEDON]
Precision Shunt Resistors; 精密分流电阻
| 型号： | USS4-T220 |
| 厂家： | 
RIEDON POWERTRON |
| 描述： | Precision Shunt Resistors |
| 文件： | 总3页 (文件大小：377K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
USR UNR 4-T220 / T220B
USS UNS 4-T220
PrecisionꢀShuntꢀResistors
• Resistances from 0.2Ohm to 80Ohms
• Power Rating to 15Watt
• Resistance Tolerances to ±0.01%
• TCR to ±1ppm/K
• Load Stability to 0.01%
SPECIFICATIONS
Type
USR / USS
UNR /UNS
ResistanceꢀRange
0.2ꢀtoꢀ80ꢀOhms
Powerꢀratingꢀ
ꢀ
ꢀ
freeꢀairꢀ70°C
withꢀheatsink
1.5W
10W
1.5W
15W
ThermalꢀResistanceꢀRthj-c
10.8ꢀK/W
6.8ꢀK/W
Tolerances
ꢀ
ꢀ
ꢀ
fromꢀ0.5ꢀOhms
fromꢀ10.0ꢀOhms
fromꢀ50.0ꢀOhms
0.1%ꢀ/ꢀ0.25%ꢀ/ꢀ0.5%ꢀ/ꢀ1%
0.05%ꢀ/ꢀ0.1%ꢀ/ꢀ0.25%ꢀ/ꢀ0.5%ꢀ/ꢀ1%
0.01%ꢀ/ꢀ0.02%ꢀ/ꢀ0.05%ꢀ/ꢀ0.1%ꢀ/ꢀ0.25%ꢀ/ꢀ0.5%ꢀ/ꢀ1%
Stability
0.01%
ShelfꢀLifeꢀStability
25ppm / ∆R after 1 year
50ppm / ∆R after 3 year
Temperature Coefficient
max.ꢀ±5ppm/Kꢀ(-55ꢀtoꢀ155°C)
typ.ꢀ±3ppm/Kꢀ(-55ꢀtoꢀ125°C)
uponꢀrequestꢀ±1ppm/Kꢀ(0ꢀtoꢀ60°C)
VoltageꢀProof
ThermalꢀEMF
OperatingꢀTemperatureꢀRange
ResistorꢀMaterial
Substrate
1ꢀkVDC
<ꢀ0.1µV/K
-55ꢀtoꢀ155°C
NiCr-Foil
Al2O3
AlN
Housing
Epoxyꢀ+ꢀCuꢀheatsinkꢀnickelꢀplated
ConnectorꢀMaterial
Terminals
Cuꢀtinned
4
Max.ꢀTorque
1.0ꢀNm
Notes
Speciallyꢀ designedꢀ forꢀ applicationsꢀ withꢀ fastꢀ
changingꢀelectricalꢀload
Ordering Information
PartꢀNumberꢀ-ꢀResistanceꢀ-ꢀContactꢀ-ꢀToleranceꢀ-ꢀTCR
UNRꢀ2-T220Bꢀ5.7kOhmsꢀCꢀ0.5%ꢀ3ppm
Riedon Inc.ꢀ
ꢀ
ꢀ
300ꢀCypressꢀAvenueꢀ
ꢀ
ꢀ
AlhambraꢀCAꢀ91801ꢀ
www.riedon.com
ꢀ(626)ꢀ284-9901ꢀ
ꢀ(626)ꢀ284-1704
Pageꢀ132
ꢀ
ꢀ
ꢀ
ꢀ
rev.ꢀ03/2006A
USRꢀUNR 4-T220ꢀ/ꢀT220B
USSꢀUNS 4-T220
PrecisionꢀShuntꢀResistors
SPECIFICATIONS (continued)
Temperature Coefficient
800
600
400
200
0
+5ppm/K
-5ppm/K
NominalꢀSpread
±2.3ppm/K
-200
-400
-600
-800
Nominal ∆R/R
NominalꢀSpread
±2.3ppm/K
100
0
25
50
75
125
-50
-25
Temperatureꢀ(°C)
Derating
PowerꢀRatingꢀNotesꢀ-
TheꢀU-SeriesꢀResistorsꢀmustꢀbeꢀattachedꢀtoꢀaꢀsuitableꢀheatsink.ꢀ
Theꢀmaximumꢀinternalꢀresistorꢀtemperatureꢀisꢀ155°C.
Toꢀspecifyꢀanꢀappropriateꢀheatsinkꢀuseꢀtheꢀfollowingꢀformulaꢀ:
120
100
80
60
40
20
0
RqHꢀ=ꢀTMAXꢀ-ꢀ(ꢀPꢀxꢀRqRꢀ)ꢀ-ꢀTA
ꢀꢀꢀꢀꢀꢀꢀꢀꢀP
Where:ꢀ RqHꢀ=ꢀThermalꢀResistanceꢀofꢀHeatsinkꢀ(ꢀK/Wꢀ)
ꢀ
ꢀ
ꢀ
ꢀ
RqRꢀ=ꢀThermalꢀResistanceꢀofꢀResistorꢀ(ꢀK/Wꢀ)
TMAXꢀ=ꢀMaximumꢀTemperatureꢀofꢀResistor
TAꢀ=ꢀAmbientꢀTemperatureꢀofꢀHeatsinkꢀ(ꢀ°Cꢀ)
Pꢀ=ꢀPowerꢀThroughꢀResistorꢀ(ꢀWꢀ)
25
50
85 100 115 130 145 155
Temperatureꢀofꢀtheꢀbackplate(°C)
Dimensions
USSꢀ4-T220ꢀ/ꢀUNSꢀ4-T220
tol.
tol.
Dimension
mm
12.70
10.16
0.76
(±mm)
inches
0.50
0.40
0.03
0.10
0.30
0.16
0.05
0.57
0.59
0.68
0.02
0.07
(±inches)
A
B
C
D
E
F
G
H
I
0.2
0.2
0.1
0.1
0.1
0.1
0.1
0.2
0.2
0.2
0.1
0.1
0.008
0.008
0.004
0.004
0.004
0.004
0.004
0.008
0.008
0.008
0.004
0.004
2.54
7.62
4.00
1.20
14.60
15.00
17.33
0.40
J
K
L
1.85
Dimension
mm
inches
A
B
C
D
E
F
12.10
11.16
18.33
7.62
0.476
0.439
0.722
0.300
0.100
0.069
0.126
2.54
1.76
G
3.20
Riedon Inc.ꢀ
ꢀ
ꢀ
300ꢀCypressꢀAvenueꢀ
ꢀ
ꢀ
AlhambraꢀCAꢀ91801ꢀ
www.riedon.com
ꢀ(626)ꢀ284-9901ꢀ
ꢀ(626)ꢀ284-1704
Pageꢀ133
ꢀ
ꢀ
ꢀ
ꢀ
rev.ꢀ03/2006A
USRꢀUNR 4-T220ꢀ/ꢀT220B
USSꢀUNS 4-T220
PrecisionꢀShuntꢀResistors
SPECIFICATIONS (continued)
Dimensions
USRꢀ4-T220Bꢀ/ꢀUNRꢀ4-T220B
tol.
tol.
Dimension
mm
17.30
10.16
6.00
Ø3.7
16.40
7.62
2.54
1.30
0.76
1.03
10.00
13.80
2.00
1.20
4.00
2.90
0.40
1.85
(±mm)
inches
0.68
0.40
0.24
Ø0.146
0.65
0.30
0.10
0.05
0.03
0.04
0.39
0.54
0.08
0.05
0.16
0.11
(±inches)
A
B
C
D
E
F
G
H
I
0.2
0.2
0.1
0.1
0.2
0.2
0.1
0.1
0.1
0.1
0.2
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.008
0.008
0.004
0.004
0.008
0.008
0.004
0.004
0.004
0.004
0.008
0.008
0.004
0.004
0.004
0.004
0.004
0.004
J
K
Kꢀ(C-Contact)
L
M
N
O
P
0.02
0.07
Q
USRꢀ4-T220ꢀ/ꢀUNRꢀ4-T220
tol.
tol.
Dimension
mm
15.30
10.00
2.80
Ø3.7
2.54
7.62
1.27
4.60
6.00
35.30
Ø0.6
2.41
(±mm)
inches
0.60
(±inches)
A
B
C
D
E
F
G
H
I
0.2
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.2
2.0
0.1
0.1
0.008
0.008
0.004
0.004
0.004
0.004
0.004
0.004
0.008
0.079
0.004
0.004
0.39
0.11
Ø0.146
0.10
0.30
0.05
0.18
0.24
J
1.39
K
L
Ø0.02
0.09
Riedon Inc.ꢀ
ꢀ
ꢀ
300ꢀCypressꢀAvenueꢀ
ꢀ
ꢀ
AlhambraꢀCAꢀ91801ꢀ
www.riedon.com
ꢀ(626)ꢀ284-9901ꢀ
ꢀ(626)ꢀ284-1704
Pageꢀ134
ꢀ
ꢀ
ꢀ
ꢀ
rev.ꢀ03/2006A
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