Semiconductors, Passives & Optoelectronics - Farnell

Semiconductors, Passives & Optoelectronics
Resistors & Potentiometers 22
WDBR Series
• Ultra low profile thick film on steel planar power resistors
• High power rating - 1.5kW, 2kW, 3kW and 7kW versions
• High pulse handling capability
• Will ’failsafe’ (open circuit) under overload (fault)
conditions while maintaining minimum 1kV dielectric
withstand voltage
• Applications include dynamic motor braking and
industrial welding
1.5 kWatt - WDBR1
Max Pulse Power 1.5kW Resistance tolerance ±10%
Max Continuous Load 180W Max working voltage 2500V d.c
Stocked in the following OHMIC Values:
12R = 129-2591 22R = 129-2592 47R = 129-2593 100R = 129-2594 150R = 129-2595
2 kWatt - WDBR2
Max Pulse Power 2kW Resistance tolerance ±10%
Max Continuous Load 200W Max working voltage 2500V d.c
Stocked in the following OHMIC Values:
12R = 129-2597 22R = 129-2598 47R = 129-2599 100R = 465-9570 150R = 129-2601
3 kWatt - WDBR3
Max Pulse Power 3kW Resistance tolerance ±10%
Max Continuous Load 260W Max working voltage 2500V d.c
Stocked in the following OHMIC Values:
12R = 129-2603 22R = 129-2604 47R = 129-2605 100R = 129-2606 150R = 129-2607
7 kWatt - WDBR7
Max Pulse Power 7kW Resistance tolerance ±10%
Max Continous Load 280W Max working voltage 2500V d.c
Stocked in the following OHMIC Values:
47R = 129-2608 100R = 129-2609 150R = 129-2610
Power rating Order Code Price Each
1.5 kW All Values ● 13.23
2 kW All Values ● 18.52
3 kW All Values ● 31.74
7 kW All Values ● 31.74
TLR Series –
Current Sense
• Ultra-low resistances (mΩ)
• High reliability and performance
• Resistance tolerance ±1%
1206 Case Size 2010 Case Size 2512 Case Size
Power rating @ 70°C 0.5W 1W 2W
Temperature coefficient 75ppm/°C 75ppm/°C 75ppm/°C
Operating Temperature -65°C to 155°C -65°C to 155°C -65°C to 170°C
Rated Voltage = √(Power rating x resitance value) or max. working voltage, whichever is lower
Stocked in the following OHMIC values:
1206 Case Size
0R002 = 140-0810 0R006 = 140-0815 0R012 = 140-0819 0R016 = 140-0822
0R003 = 140-0811 0R008 = 140-0816 0R013 = 140-0820 0R018 = 140-0823
0R004 = 140-0813 0R01 = 140-0817 0R015 = 140-0821 0R02 = 140-0825
0R005 = 140-0814 0R011 = 140-0818
2010 Case Size
0R001 = 140-0826 0R004 = 140-0829 0R007 = 140-0832 0R009 = 140-0834
0R002 = 140-0827 0R005 = 140-0830 0R008 = 140-0833 0R01 = 140-0835
0R003 = 140-0828 0R006 = 140-0831
2512 Case Size
0R002 = 140-0837 0R004 = 140-0839 0R006 = 140-0841 0R008 = 140-0843
0R003 = 140-0838 0R005 = 140-0840 0R007 = 140-0842
Order Multiple=10
Case Size Order Code Price Each
1206 All Values ● 1.03
2010 All Values ● 1.04
2512 All Values ● 1.16
PFE Series
Powr-Rib Edgewound ±10%
Potentiometers
Order now www.farnell.com
Indicative Euro prices, ex-works UK warehouse basis
• Constructed of a heavy resistance
alloy mounted on ceramic insulators
and supported by a metal mounting
bracket
• Edgewound design for very low
resistance and high power capacity
• Edgewound units provide clamp-type
terminals, permitting a reliable
connection which can be moved
along the resistive element to obtain
intermediate values
Order Multiple=1
Resistance Maximum Current Power Rating Mftrs. List No. Order Code Price Each
0.10R 100A 1000W PFE5KR100EW 146-2328● 196.85
0.12R 91A 993W PFE5KR120EW 146-2329● 226.04
0.14R 89A 1108W PFE5KR140EW 146-2330● 153.11
0.16R 78A 973W PFE5KR160EW 146-2331● 131.23
0.18R 75A 1012W PFE5KR180EW 146-2332● 122.91
0.25R 63A 992W PFE5KR250EW 146-2333● 149.98
0.33R 54A 962W PFE5KR330EW 146-2334● 131.23
0.50R 47A 1104W PFE5KR500EW 146-2335● 147.90
0.75R 39A 1140W PFE5KR750EW 146-2336● 123.95
1.0R 33A 1089W PFE5K1R00EW 146-2338● 108.33
1.6R 26A 1081W PFE5K1R60EW 146-2339● 88.54
2.8R 16.3A 743W PFE5K2R80EW 146-2340● 76.04
3.5R 14.6A 746W PFE5K3R50EW 146-2341● 72.92
4.5R 12.7A 725W PFE5K4R50EW 146-2342● 122.91
5.4R 11.8A 751W PFE5K5R40EW 146-2343● 110.83
6.8R 10.3A 721W PFE5K6R80EW 146-2344● 107.29
8.5R 9.4A 751W PFE5K8R50EW 146-2345● 105.20
PTC Series Thermistors
Self-Protecting Resistor for Capacitor Charging
• Self-protecting in case of malfunction or
internal short-circuit of capacitor
• Applications include inrush current limiter
(charging resistor) for smoothing and DC
link capacitors, to replace high-power
fixed resistors for charing capacitors
Resistance Operating Voltage Mftrs.
(Ω) (V) List No. Order Code
20 550 B59201J140B10 151-1740
56 650 B59202J135B10 151-1741
100 800 B59204J130B10 151-1742
Order Multiple=1
Order Code Price Each
All Values ● 3.59