Thick Film Power Resistors
Type BDS300 Series
Literature No. 1773187
Issued: 07-06
Dimensions are shown for
reference purposes only.
Dimensions are in millimetres
unless otherwise specified.
Specifications subject to
change.
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Key Features
■
Easy connection with M4
or M5 screws
■
Connector heights
available from
25 to 42mm
■
Increased creep distance
up to 85mm
■
Potted cable connections
available on request
■
Custom Designs available
Applications
■
Snubbing
(Low inductance)
■
Balancing Resistor
(Multi-resistor package)
■
Filter (Low inductance)
■
High Voltage
■
High Frequency
Type BDS300 Series
The BDS300 has been designed for
use as a snubber resistor where
compensatation is required for C-R
peaks in traction power supply
equipment. The High alumina
metallized ceramic is ideally suited
to allowing maximum connection to
the main heatsink. The resin filled
epoxy casing provides large creep
distance to mass, large air distance
between the terminals and high
insulation resistance, whilst the
design of the Resitive element
element allows for perfect current
yeild over the entire component.
Characteristics -
Electrical
Resistance Values: R505 to 100K
Resistance Tolerance: ±5% or ±10%
Temperature Coefficient: ±150ppm/°C (others upon request)
Power Rating: 300W at 85°C
Capacitance / Mass: 110 pF
Capacitance / Parallel: 40 pF
Inductance: 80 nH
Maximum Working Voltage: 5,000VDC
Insulation Voltage: 6kVrms, 50Hz,1Min.
Single Shot Voltage: up to 12 kV Normwave (1.5/50µ secs)
Insulation Resistance: 10GΩMin. at 500V
Partial Discharge: 3kVrms <10pC
Characteristics -
Environmental
Operation Temperature: -55°C to +150°C
Short Time Overload: 1.5x rated power = 450W at 70°C for 10 sec, ∆R = 0.4% max.
Characteristics -
Mechanical
Terminal Size: M4 or M5 Screws
Max. Torque for Contacts: 2 Nm
Max. Torque for Mounting: 1.8 Nm
Creeping Distance: 42mm Minimum
Air Distance: 14mm Minimum
Dimensions
Derating Curve Pulse Energy
ø4.1 ±0.2
0.05
18.07.0
15.0
5.0 ±0.5
øM5
57.0 ±0.2
34.0 ±0.2
65.0
36.0±0.3
60.0
30.0 ±0.5
32.0 ±0.5
0 25 50 75 100 125 150 175 200
120
100
80
60
40
20
0
Rated Power (%)
Case Temperature °C
0.001 0.01 0.1 1 10 100 1000 10000 100000
Time (msecs)
100000
10000
1000
100
10
1
0.1
0.01
Energy (W/s)
How to Order
BDS 2 A 300 1K0 J
Common Part
A: Standard
Circuit Type
300 - 300 Watts
Power Dissipation Resistance Value
BDS 2 (2 Terminal)
0.5Ω(500mΩ) R50
1Ω(1000mΩ) 1R0
1K (1000Ω) 1KO
Tolerance
J - 5%
K - 10%
