AP851 50 Watts TO-220 High
Power Resistors
A high power TO-220 style resistor package designed for high frequency emitter
circuits in switching power supplies. Also used in voltage regulation and low energy
pulse loading.
• 50 Watts at 25˚C case temperature on heat sink
• Single screw mounting to heat sink
• Moulded case for proctection and easy to mount
• Non-inductive design
• Electrically isolated case
• RoHS Compliant
Characteristics
Power rating:
2.25 Watts in free air
Operating voltage:
420V max
Dielectric strength:
1800Vac
Insulation resistance:
10GΩ min
Temperature coefficient:
As specified, referenced to 25˚C, ∆R taken at +105˚C
Short time overload:
∆R ±0.3%, 2 times rated power with applied voltage not to exceed 1.5 times maximum continuous
operating voltage for 5 seconds
Load life:
∆R ±1.0%, 2000 hours at rated power
Damp heat with load:
∆R ±0.5%, 40 ±2˚C, 90 - 95% R.H max working voltage for 1000 hours with 1.5 hours “ON” and
0.5 hours “OFF”
Solderability:
90% min coverage, 245 ±5˚C for 3 seconds
Thermal shock:
∆R ±0.3%, -65˚C - 150˚C, 100 cycles
Terminal strength:
∆R ±0.2%, 2.4 N
Vibration and high frequency:
∆R ±0.2%, 20g peak
Electrical Specifications
Resistance
Value Range
Available Tolerance & Pref.
Available TCR
Value Ranges
R1 - 1R
J (±5%) K (±10%)
3R01 - 10R
10R2 - 10K
F (±1%) , J (±5%) ,
K (±10%)
D (±0.5%) F (±1%) J
(±5%) K (±10%)
100
Not specified
±300ppm/˚C
Power Rated %
1R02 - 3R
Derating Curve
±100ppm/˚C (std.)
±200ppm/˚C
±50ppm/˚C
±100ppm/˚C (std.)
±200ppm/˚C
80
60
40
20
0
0
25
50
Preferred value ranges:
F (±1%) - E96 , J (±5%) - E24, K (±10%) - E12
100
125
Case Temperature (°C)
For more information and ordering, please consult
www.arcolresistors.com
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150
175
AP851 50 Watts TO-220 High
Power Resistors
Standard part numbers
0.40 0.42"
(10.15 -10.67mm)
10.15
10.67
AP8511RF
AP8511RJ
AP8512RJ
AP8513R3J
AP8513R9J
0.63 0.65"
(16.00- 16.52
16.52mm)
16.00
0.115 0.135"
(2.92
3.44mm)
2.92
- 3.44
Dimensions (mm)
AP8514R7J
AP85110RF
AP85110RJ
AP85115RJ
AP85125RF
AP85125RJ
AP85147RJ
AP851100RF
AP851100RJ
AP851220RJ
AP851330RJ
AP851470RJ
AP8511KJ
AP85110KJ
0.115 0.135"
(2.92 -3.44mm)
2.92
3.44
0.121 0.129"
(3.08
3.083.28mm)
- 3.28
0.045 0.055"
(1.14
1.141.40mm)
- 1.40
0.016 0.024"
(0.40 -0.60mm)
0.40
0.60
0.06 0.08"
(1.52 - 2.04mm)
1.52
2.04
0.45 0.55"
(11.43 13.97mm)
11.43
- 13.97
0.026 0.034"
(0.66
0.660.86mm)
- 0.86
0.10 0.16"
(2.54
2.544.06mm)
- 4.06
0.19 0.21"
(4.82 5.34mm)
4.82
- 5.34
ARCOL UK Limited,
The information contained herein does not form part of a
Threemilestone Ind. Estate,
contract and is subject to change without notice. ARCOL
Truro, Cornwall, TR4 9LG, UK.
operate a policy of continual product development, therefore,
T +44 (0) 1872 277431
specifications may change.
F +44 (0) 1872 222002
E sales@arcolresistors.com
www.arcolresistors.com
It is the responsibility of the customer to ensure that the
component selected from our range is suitable for the intended
application. If in doubt please ask ARCOL.
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