OX/OY Series
Ceramic Composition
10% Tolerance
F ꢀ at u ꢁ ꢀ S
The OX/OY Series of fixed
ceramic resistors are ideal for
circuitry associated with surges,
high peak power or high energy.
They offer enhanced perfor-
mance in high voltage power
supplies, R-C snubber circuits,
and inrush limiters. The OX/
OY resistors can often replace
carbon composition resistors
which can be difficult to source.
•ꢀReplacesꢀ1ꢀandꢀ2ꢀwattꢀ
carbon composition
resistors
•ꢀMeetsꢀhighꢀenergyꢀ
density demands
•ꢀHighꢀpeakꢀpowerꢀ
•ꢀ10%ꢀTolerance
SꢀꢁIꢀS SPꢀCIFICatIONS
Series
OX
Watts max.* Resistance range
Joules max.** Max. working volts
1
3.3Ω-100K
50
300
OY
2
3.3Ω-1M
80
400
* at 70°C. **For a single impulse.
ChaꢁaCtꢀꢁIStICS
Pb-free solder-coated axial
Terminals
Coating
Test Condition
Maximum ∆R
±5%
Silicone ceramic
MIL-STD-202, Method 108
2x rated V, 5 sec ON @ 70°C
Life Test
Short Time Overload
Resistance to Pulse1
Linear from 100% @ +70°C to
0% @ +200°C
±(2% +0.05Ω)
±5%
Derating
20,000 cycles. See circuit for test
conditions
-40°C to +220°C
Operating Temp.
Range
MIL-STD-202, Method 107
±(2% ±0.05Ω)
Thermal Shock
±10% standard
Tolerance
1000 hrs @ 40°C,
90 - 95% RH
±5%
Moisture Resistance
Based on 70°C free air rating
-1300 ±300ppm/°C.
Power Rating
Temperature
Coefficient
Resistance to Pulse
0.80%
OX
OY
DC 20KV
see circuit for
test conditions
OY Series
300V
500V
600V
14KV
400V
700V
800V
20KV
Max Working Voltage
Dielectric Strength
Max Overload Voltage
Max Pulse Voltage1
0.60%
0.40%
0.20%
0.00%
10 Kohms
1 Kohm
100 ohms
1240V @ 52µF, 1640V @ 52µF,
40J/ 35 sec.
Pulse Tolerance,
70J/35 sec.
100 pulses
0
100
1,000
Cycles
10,000
20,000
1See figures
0.80%
0.60%
0.40%
0.20%
0.00%
DC 14KV
see circuit for
test conditions
OX Series
1 sec. on / 1 sec. off
10 Kohms
14KV and 20KV val-
ues used in circuit as
shown; full voltage
not applied directly to
resistor.
10 kohm
Max. Pulse
Voltage
1000 pF
R.U.T.
1 Kohm
100 ohms
0
100
1,000
10,000
20,000
Cycles
(continued)
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