SPR SNR 4-T227
FEATURES
•
•
•
•
•
Resistances from 0.002Ohm to 20Ohms
Power Rating to 80Watt
Resistance Tolerances to ±0.1%
TCR to ±2ppm/K
Load Stability to 0.1%
TABLE 1—SPECIFICATIONS
TYPE
Resistance Range
Power Rating
With heatsink
Tolerances
from 0.002 Ohms
from 0.010 Ohms
Thermal Resistance
Stability (1000h)
Temperature Coefficient
Standard (N)
Option (M)
Option (L) upon request for selected values
Voltage Proof
Maximum Current
Thermal EMF
Operating Temperature Range
Resistor Material
Substrate
Backplate
Housing
Connector Material
Terminals
Max. Torque
60 W
SPR 4-T227
0.002 to 20 Ohms
80 W
SNR 4-T227
0.5% / 1% / 2% / 5%
0.1% / 0.25% / 0.5% / 1% / 2% / 5%
1.3 K/W
1.0 K/W
0.1% / 0.2% / 0.5%
(depends on stress)
±10ppm/K (20 to 60°C)
±5ppm/K (20 to 60°C)
±2ppm/K (20 to 60°C)
other specifications upon request
1.5 kV DC
50 A contact G
85 A contact I
< 1 µV/K
-40°C to 130°C
CuMnSn-Foil
Al
2
O
3
Copper / Nickel-plated
Epoxy
Cu / tinned
4 (Standard contact G - bended)
backplate: 1.5Nm
terminals: 1.3 Nm
AlN
ORDERING INFORMATION
Part Number - Resistance - Contact - Tolerance - TCR
SPR 4-T227 1R100 G 1% N
Document No.: 64252
Revision: 15-06-2016
For technical questions,
contact
powertron@vpgsensors.com
www.powertron.de
1
SPR SNR 4-T227
FIGURE 1—TEMPERATURE COEFFICIENT
2000
+10 ppm/K
1000
+5 ppm/K
∆R/R
(ppm)
0
Nominal
∆R/R
-5 ppm/K
-1000
-10 ppm/K
-2000
-40
-20
0
20
40
60
80
100
120
140
Temperature (°C)
FIGURE 2—DERATING
Power Rating Notes -
120
Power ( % from
nominal power)
100
80
60
40
20
0
25
0.5%
0.2%
0.1%
The SPR/SNR Series Foil Resistors must be attached to a suit-
able heatsink. The maximum internal resistor temperature is
130°C for a 0.5% stability part.
To specify an appropriate heatsink use the following formula :
R
θH
= T
MAX
- ( P x R
θR
) - T
A
P
Where:
50
85
100
115
130
Tem perature of the backplate (°C)
R
θ
H
= Thermal Resistance of Heatsink ( K/W )
R
θ
R
= Thermal Resistance of Resistor ( K/W )
T
MAX
= Maximum Temperature of Resistor
T
A
= Ambient Temperature of Heatsink ( °C )
P = Power Through Resistor ( W )
FIGURE 3—DIMENSIONS
in mm (inches)
Dimension
A
±0.5 (±0.020)
B
±0.5 (±0.020)
C
±0.2 (±0.008)
D
±0.2 (±0.008)
E
±0.2 (±0.008)
F
±0.2 (±0.008)
G
±0.2 (±0.008)
H
±0.2 (±0.008)
I
±0.2 (±0.008)
J
±0.2 (±0.008)
K
±0.2 (±0.008)
L
±0.1 (±0.004)
M
N
±0.2 (±0.008)
O
±0.2 (±0.008)
mm
26 (1.02)
38 (1.50)
12.7 (0.50)
4 (0.16)
30 (1.18)
15 (0.59)
4.1 (0.16)
10 (0.39)
8 (0.31)
4 (0.16)
2 (0.08)
0.8 (0.03)
M4
10 (0.39)
11.9 (0.47)
www.powertron.de
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For technical questions,
contact
powertron@vpgsensors.com
Document No.: 64252
Revision: 15-06-2016
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Vishay Precision Group, Inc.
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Document No.: 63999
Revision: 15-Jul-2014
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