UNR4-402050RD WILLOW [Willow Technologies Ltd], UNR4-402050RD Datasheet
UNR4-402050RD
Manufacturer Part Number
UNR4-402050RD
Description
Highest Stability Nearly Temperature Independent
Manufacturer
WILLOW [Willow Technologies Ltd]
Datasheet
1.UNR4-402050RD.pdf
(2 pages)
SPECIFICATIONS
ELEKTRICAL
ENVIRONMENTAL
MECHANICAL
note
USR UNR 4-4020
Tel. + 44 (0) 1342 835234, Fax. + 44 (0) 1342 834306, e-mail
1)
: Specially designed for applications with fast changing electrical load.
Willow Technologies Ltd. Shawlands Court, Newchapel Road, Lingfield, Surrey, RH7 6BL, UK
Operating Temperature Range
Thermal Resistance Rthj-c :
Resistor Material
Resistance Range
Power Rating
Tolerances
Stability
Temperature Coefficient :
Voltage Proof
Max. Current
Thermal EMF
Substrate
Housing
Connector Material
Max. torque backplate
from 0R05
from 10R
from 50R
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
• • • • •
• • • • • Low Capacity and
• • • • • Nearly Temperature
• • • • • Minimum Tolerance
• • • • • Customized Resistor Values
Independent
Highest Stability
Inductance
USR 4-4020
0R05 ... 500R
other resistance values upon request /
power rating depending on resistor value
2.5 W (70°C) without heatsink
30 W*
* with heatsink
3.6 K/W
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%
0.01%
max. ±5 ppm/K (-55...155)°C
typ. ±3 ppm/K (-55...125)°C
upon request ±1 ppm/K (0...60)°C
750 VDC
15 A
<1 µV/K
-55°C...155°C
NiCr-Foil
Al
Epoxy + Al-heatsink
Cu, tinned, 4-pin
1.0 Nm
2
O
sales@willow.co.uk
3
web
www.willow.co.uk
note
0R05 ... 500R
UNR 4-4020
1)
50 W*
2.2 K/W
15 A
AlN
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UNR4-402050RD Summary of contents
Page 1
USR UNR 4-4020 SPECIFICATIONS ELEKTRICAL Resistance Range Power Rating Thermal Resistance Rthj-c : Tolerances from 0R05 from 10R from 50R Stability Temperature Coefficient : Voltage Proof Max. Current Thermal EMF ENVIRONMENTAL Operating Temperature Range MECHANICAL Resistor Material Substrate Housing Connector ...
Page 2
USR UNR 4-4020 TEMPERATURE COEFFICIENT 600 400 -5 ppm/K 200 0 +2,2 ppm/K -200 -400 -600 -50 -25 DERATING CURVE 120 100 DIMENSIONS HOW TO ORDER USR 4-4020 0R3 D 0.25% TK3 Willow ...