Page 1 of 2
The information contained herein does not form part of a
contract and is subject to change without notice. ARCOL
operate a policy of continual product development, therefore,
specifications may change.
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.
ARCOL UK Limited,
Threemilestone Ind. Estate,
Truro, Cornwall, TR4 9LG, UK.
T +44 (0) 1872 277431
F +44 (0) 1872 222002
E sales@arcolresistors.com
www.arcolresistors.com
2/13.18
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
Electrical Specifications
Resistance
Value Range
Available Tolerance & Pref.
Value Ranges Available TCR
R1 - 1R J (±5%) K (±10%) Not specified
1R02 - 3R F (±1%) , J (±5%) ,
K (±10%)
±300ppm/˚C
3R01 - 10R ±100ppm/˚C
±200ppm/˚C
10R2 - 10K D (±0.5%) F (±1%) J
(±5%) K (±10%)
±50ppm/˚C
±100ppm/˚C
±200ppm/˚C
Preferred value ranges:
F (±1%) - E96 , J (±5%) - E24, K (±10%) - E12
Characteristics
Power rating:
Operating voltage:
Dielectric strength:
Insulation resistance:
Temperature coefficient:
Short time overload:
Load life:
Damp heat with load:
Solderability:
Thermal shock:
Terminal strength:
Vibration and high frequency:
2.25 Watts in free air
420V max
1800Vac
10GΩ min
As specified, referenced to 25˚C, ∆R taken at +105˚C
∆R ±0.3%, 2 times rated power with applied voltage not to exceed 1.5 times maximum continuous
operating voltage for 5 seconds
∆R ±1.0%, 2000 hours at rated power
∆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”
90% min coverage, 245 ±5˚C for 3 seconds
∆R ±0.3%, -65˚C - 150˚C, 100 cycles
∆R ±0.2%, 2.4 N
∆R ±0.2%, 20g peak
Derating Curve
100
80
60
40
20
0
025 50 75 100 125 150 175
Power Rated %
Case Temperature (°C)
Page 2 of 2
The information contained herein does not form part of a
contract and is subject to change without notice. ARCOL
operate a policy of continual product development, therefore,
specifications may change.
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.
ARCOL UK Limited,
Threemilestone Ind. Estate,
Truro, Cornwall, TR4 9LG, UK.
T +44 (0) 1872 277431
F +44 (0) 1872 222002
E sales@arcolresistors.com
www.arcolresistors.com
2/13.18
Dimensions (mm)
0.045 0.055"
(1.14 1.40mm)
0.115 0.135"
(2.92 3.44mm)
0.06 0.08"
(1.52 2.04mm)
0.19 0.21"
(4.82 5.34mm)
0.45 0.55"
(11.43 13.97mm)
0.026 0.034"
(0.66 0.86mm)
0.10 0.16"
(2.54 4.06mm)
0.63 0.65"
(16.00 16.52mm)
0.40 0.42"
(10.15 10.67mm)
0.115 0.135"
(2.92 3.44mm)
0.121 0.129"
(3.08 3.28mm)
0.016 0.024"
(0.40 0.60mm)
AP851 50 Watts TO-220 High
Power Resistors
10.15 - 10.67
3.08 - 3.28
1.14 - 1.40
4.82 - 5.34
0.66 - 0.86
2.92 - 3.44
0.40 - 0.60
1.52 - 2.04
2.92 - 3.44
16.00 - 16.52
2.54 - 4.06
11.43 - 13.97
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Arcol:
AP851 1K F 50PPM AP851 5K J 100PPM AP851 39R F 50PPM AP851 2K7 F 50PPM AP851 1K5 J 100PPM
AP851 180R F 50PPM AP851 R2 J AP851 R3 J AP851 1R8 J AP851 470R F 50PPM AP851 39R J 100PPM
AP851 2K2 J 100PPM AP851 3K9 J 100PPM AP851 100R J 100PPM AP851 68R J 100PPM AP851 5R F 100PPM
AP851 2R2 F AP851 25R J 100PPM AP851 18R F 50PPM AP851 10R J 100PPM AP851 8K2 F 50PPM AP851
220R J 100PPM AP851 120R J 100PPM AP851 4K7 F 50PPM AP851 27R F 50PPM AP851 82R J 100PPM AP851
2R7 J AP851 27R J 100PPM AP851 R5 J AP851 3K9 F 50PPM AP851 1R8 F AP851 R4 J AP851 2K5 J 100PPM
AP851 5K F 50PPM AP851 10R F 100PPM AP851 680R J 100PPM AP851 R7 J AP851 R8 J AP851 330R F 50PPM
AP851 22R J 100PPM AP851 4K7 J 100PPM AP851 560R F 50PPM AP851 5K6 J 100PPM AP851 150R J 100PPM
AP851 100R F 50PPM AP851 R6 J AP851 6R8 F 100PPM AP851 5R6 J 100PPM AP851 5K6 F 50PPM AP851
2K7 J 100PPM AP851 1K8 F 50PPM AP851 50R J 100PPM AP851 1K5 F 50PPM AP851 270R F 50PPM AP851
8R2 J 100PPM AP851 470R J 100PPM AP851 6K8 J 100PPM AP851 10K F 50PPM AP851 680R F 50PPM AP851
1R5 F AP851 120R F 50PPM AP851 5R6 F 100PPM AP851 2R5 J AP851 15R J 100PPM AP851 47R J 100PPM
AP851 12R J 100PPM AP851 18R J 100PPM AP851 22R F 50PPM AP851 1K8 J 100PPM AP851 3K3 J 100PPM
AP851 8R2 F 100PPM AP851 270R J 100PPM AP851 2R2 J AP851 6K8 F 50PPM AP851 390R F 50PPM AP851
150R F 50PPM AP851 1R F AP851 820R J 100PPM AP851 1K2 F 50PPM AP851 820R F 50PPM AP851 330R J
100PPM AP851 3R9 J 100PPM AP851 47R F 50PPM AP851 1R2 F AP851 10K J 100PPM AP851 3R3 J 100PPM
AP851 4R7 J 100PPM AP851 390R J 100PPM AP851 25R F 50PPM AP851 56R F 50PPM AP851 68R F 50PPM
AP851 1K J 100PPM AP851 R1 J AP851 1K2 J 100PPM AP851 3K3 F 50PPM AP851 1R J AP851 56R J 100PPM
AP851 6R8 J 100PPM AP851 33R J 100PPM AP851 220R F 50PPM
