RIEDON NPS2-T12611OHMS

NPS 2-T126
Power SMD Resistors
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Resistances from 0.025Ohm to 10kOhms
Power Rating to 25Watt
Resistance Tolerances to ±1%
TCR to ±100ppm/°C
Load Stability to 0.5%
TO-126 Housing (D-Pak)
Solder Reflow Secure at 260°C / 20s
SPECIFICATIONS
Type
NPS 2-T126
Terminals
Resistance Range
2
0.025 to 0.049Ohms
0.05 to 0.099Ohms
Power Rating
(with heatsink)
Thermal Resistance Rthj-c
1Ohms to 10kOhms
6.0 K/W
Tolerances
(others upon request)
2% / 5%
1% / 2% / 5%
Stability
Temperature Coefficient
(TCR 50ppm upon request)
0.1 to 0.99Ohms
25 W
0.5%
±500 ppm/°C
Voltage Proof
±400 ppm/°C
±300 ppm/°C
±100 ppm/°C
2.0 kV DC
Operating Temperature
-40°C to 175°C
Resistor Material
Thick Film
Substrate
Al2O3
Housing
Epoxy
Connector Material
Cu / Ni-flash / lead-free tinned
Reflow soldering
lead-free soldering 260°C / 20s
Ordering Information
Part Description: Part Type - Resistance - Tolerance
NPS 2-T126 1.1 Ohms 1%
Riedon Inc.
300 Cypress Avenue
Alhambra CA 91801
(626) 284-9901
(626) 284-1704
www.riedon.com
Page 83
07/13
NPS 2-T126
Power SMD Resistors
SPECIFICATIONS (continued)
Derating
120
Power Rating Notes -
The NPS Series Resistors must be attached to a suitable heatsink. The maximum internal resistor temperature is 175°C.
To specify an appropriate heatsink use the following formula :
Power (% from
nominal power)
100
80
RqH = TMAX - ( P x RqR ) - TA
P
60
40
20
0
0
25 40 55 70 85 100 115 130 145 155 175
Temperature of the backplate (°C)
Where:RqH = Thermal Resistance of Heatsink ( K/W )
RqR = Thermal Resistance of Resistor ( K/W )
TMAX = Maximum Temperature of Resistor
TA = Ambient Temperature of Heatsink ( °C )
P = Power Through Resistor ( W )
Dimensions
Dimension
mm
tol.
(±mm)
inches
tol.
(±inches)
A
8.26
0.2
0.33
0.008
B
8.13
0.2
0.32
0.008
C
6.35
0.1
0.25
0.004
D
4.31
0.1
0.17
0.004
E
1.35
0.1
0.05
0.004
F
5.08
0.1
0.20
0.004
G
0.76
0.1
0.03
0.004
H
2.79
0.1
0.11
0.004
0.004
I
0.8
0.1
0.03
J
9.55
0.2
0.38
0.008
K
10.92
0.2
0.43
0.008
0.008
L
12.32
0.2
0.49
M
0.6
0.1
0.02
0.004
N
1.47
0.1
0.06
0.004
Dimension
mm
inches
A
8.51
0.335
B
7.87
0.310
C
14.1
0.555
D
5.08
0.200
E
1.65
0.065
F
3.81
0.150
Riedon Inc.
300 Cypress Avenue
Alhambra CA 91801
(626) 284-9901
(626) 284-1704
www.riedon.com
Page 84
07/13