WDBR5T-100RKI Welwyn Components, WDBR5T-100RKI Datasheet
WDBR5T-100RKI
Manufacturer Part Number
WDBR5T-100RKI
Description
RESISTORS, 5KW 100R RESISTORS, 5KW 100R
Manufacturer
Welwyn Components
Series
WDBRr
Datasheet
1.WDBR5T-100RKI.pdf
(2 pages)
Specifications of WDBR5T-100RKI
Thick Film
RESISTANCE
Case Style
PLANAR
Power Rating
300W
Tolerance, +
10%
Tolerance, -
-10%
Temp, Op. Max
150(DEGREE C)
Voltage Rating, Dc
2500V
Rohs Compliant
YES
Testing carried out on a heatsink (thermal resistance 0.5°C/W), force cooled at 15 m/s air velocity for 50000 cycles.
Ultra Low Profile Dynamic
Braking/Power Resistors
WDBR Series
•
•
•
•
•
•
This new range of thick film on steel planar power resistors offers high pulse withstand capability, compact footprint and low
profile, to many demanding applications including dynamic motor braking and industrial welding.
Electrical Data
Power Derating
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 data and is considered accurate at time of going to print.
© Welwyn Components Limited
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email:info@welwyn-tt.com · Website: www.welwyn-tt.com
Resistance range
Max ∆R at rated pulse load (te)
Max pulse power (min 50000 cycles as per Fig 2)
Stability (nominal load) after 50000 cycles
Max resistor ‘hot spot’ temperature
Min dielectric withstand voltage
Max single pulse power (1ms pulse non-repetitive)
Max continuous load
Derating
Inductance (typical)
Simple construction, lower installation cost
2kW and 5kW versions
Failsafe
Low inductance
UL and IP approval pending
Enables reduction in overall product size
150
100
50
0
0
Heatsink Temp (C)
· Bedlington, Northumberland NE22 7AA, UK
100
200
Fig 1
V DC
kW
µH
∆R
°C
W
W
Ω
Duty Cycle 2s on (pulsed) 8s off
1ms
1ms
WDBR2
8000
100
<3
2
2s
25R, 50R, 100R, 150R
See Fig 1
±20%
<±5%
Welwyn Components
2500
365
8s
WDBR5
16000
300
<5
5
TT electronics plc
Issue H · 04.03
A subsidiary of
Vdc
Fig 2
211
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WDBR5T-100RKI Summary of contents
Page 1
... Heatsink Temp (C) 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 data and is considered accurate at time of going to print. © Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email:info@welwyn-tt.com · Website: www.welwyn-tt.com WDBR2 Ω ...
Page 2
... WDBR resistors will ‘failsafe’ (open circuit) under overload (fault) conditions whilst maintaining a dielectric withstand of 1kV minimum. © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email:info@welwyn-tt.com · Website: www.welwyn-tt.com 212 ...