Information

Product Portfolio for the Railway Sector
Type BDS / BDF Series
Literature No. 4-1773460-6 Dimensions are in millimeters Dimensions are shown for TE Connectivity / Berwyn, PA
Issued 3-11 and inches unless otherwise reference purposes only. For email, phone or live chat, go to: te.com/help
specified. Values in brackets Specifications subject
are standard equivalents. to change.
Characteristics - Electrical
Dimensions
Key Features
I Values R47 - 1MΩ
I Voltage single shot 12kV
I Options for internal
circuitry
I Non-inductive for fast
switching
I Low partial discharge
Applications
I Snubbing
(low inductance)
I Balancing resistor
(multi resistor package)
I Filter (low inductance)
I High voltage
I High frequency
The BDS is a non-inductive thick film power resistor offering continuous powers up to
400 Watts (on a suitable heatsink). A modern functional package, with high voltage
insulation and an excellent partial discharge rating.
250 / 400W 100W (T0 227)
Resistance Range: 0R47-1M ( 4 terminal below 1R) 0R20-1M (4 terminal below 1R)
Resistance Tolerance: ±10%, 5% (tighter by discussion) ±10%, 5% (tighter by discussion)
TCR - R > 1 Ohm: 250ppm
o
C 250ppm
o
C
TCR - R < 1 Ohm: 150ppm
o
C 150ppm
o
C
Rated Power Heatsink
250W (400W) at 70
o
C 100W at 60
o
C max heatsink
Temperature at 100
o
C:
Parallel Capacitance: 40pf 40pf
Capacitance to Earth: 120pf 120pf
Series Inductance: 40nH maximum 40nH maximum
Limiting Element Voltage: 5kV max DC/AC rms 2.5kV DC/AC rms
Isolation Voltage
7kV DC/AC rms 2.5kV DC/AC rms
(Terminal to Heatsink):
Single Shot 1.5/50µs: up to 12kV 4.0kV
Insulation Resistance at 500V DC: > 100g Ohms > 100g Ohms
Partial Discharge: < 5pC at 7kV < 10pC at 2.5 kv
Endurance (Rated Power): 2000 cycles at rated power 30m/30m ΔR 0.25% typically
Humidity Load Life: 56 days, 40
o
C, 95%rh ΔR 0.25% typically (i.r. 10g Ω)
Temperature Cycling: -55
o
C to +125
o
C, 5 cycles ΔR 0.25% typically
Operating / Storage Temperature: -55
o
C to +125
o
C
*Short Term Overload: 3 times rated power, 10 seconds ΔR 0.25% typically *(4 times to order)
Vibration: 10/500 hz ΔR 0.25% typically
Bump: 40g 4000 ΔR 0.25% typically
67
57
60
37.8
30.0
25.4
17
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