WDBR1-100RKT Welwyn Components, WDBR1-100RKT Datasheet - Page 2

RESISTORS, POWER PLANAR, 100R 1.5KW RESISTORS, POWER PLANAR, 100R 1.5KW

WDBR1-100RKT

Manufacturer Part Number
WDBR1-100RKT
Description
RESISTORS, POWER PLANAR, 100R 1.5KW RESISTORS, POWER PLANAR, 100R 1.5KW
Manufacturer
Welwyn Components
Series
WDBRr
Datasheet

Specifications of WDBR1-100RKT

Thick Film
RESISTANCE
Case Style
PLANAR
Power Rating
180W
Tolerance, +
10%
Tolerance, -
10%
Voltage Rating, Dc
2500V
Rohs Compliant
YES
Ultra Low Profile Power Resistors
WDBR Series
Terminations
The following termination options are available
Performance Data
Pulsed load at full pulse power rating 50,000 cycles
Mounted on a 0.53°C/W heatsink with 5m/s forced air cooling, air temperature 25°C.
Derating at heatsink temperatures >160°C
Application Notes
A heatsink with thermal resistance ≤0.53°C/W will enable the component to operate at its continuous power rating.
Thermal grease (e.g. Dow Corning DC340) should be used and the heatsink should have a surface finish of <6.3μm
with flatness of <0.05mm. The resistor should be mounted using a screw head bolt of size M5 for WDBR2, 3, 5 & 7,
M3 for WDBR1 and M2 for WDBR1/2. This should be torqued to 2.5Nm ±10%.
WDBR resistors will fail safe (open circuit) under overload fault conditions and still maintain a 1kV dielectric withstand.
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own test data and is considered accurate at time of print.
Welwyn Electronics Park, Bedlington, Northumberland, NE22 7AA, England. Tel: 01670 822181 Fax: 01670 829465 Web: www.welwyn-tt.com
Push-on connectors
UL3134 40A, 600V
(WDBR1,2,3,5&7)
Welwyn Components Limited
Solder pad only
Flying leads
SnAg (96S)
Option
1ms
1ms
Fig. 1: Duty Cycle Waveform
2s
Code
T
L
I
8s
P pk
(see Fig 1)
120
100
80
60
40
20
Nominal Dimensions
0
0
11mm
Fig. 2: Temperature Derating
250mm
50
Heatsink Temperature (°C)
9mm
6mm
8mm
ΔR%
100
9mm
0.8mm
150
8.5mm
See Fig. 2
Maximum
5
200
3mm
250

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