Ultra Low Profile

Power Resistors

WDBR Series

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General Note

TT electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT electronics’ own data and is considered accurate at time of going to print.

© TT electronics plc

02.13

11mm

250mm

3mm

9mm

Option

Code

Nominal Dimensions

I

Flying leads

UL3134/5

40A, 600V

L

Push-on connectors

(WDBR1,2,3,5&7)

T

Terminations

The following termination options are available

Maximum

Pulsed load at full pulse power rating 50,000 cycles (see Fig 1)

Mounted on a 0.53°C/W heatsink with 5m/s forced air cooling, air temperature 25°C.

ΔR%

5

Derating at heatsink temperatures >160°C

See Fig. 2

Thermal Performance

1ms

1ms

8s

P pk

2s

Fig. 1: Duty Cycle Waveform

0

20

40

60

80

100

120

0

50

100

150

200

250

Heatsink Temperature (°C)

Fig. 2: Temperature Derating

9mm

6mm

0.8mm

8.5mm

8mm

Notes:

1. Two options exist for solder type. The standard is SnAg (96SC) and the second is high temperature HMP alloy.