Datasheet

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
56
OX/OY Series
Ceramic Composition
10% Tolerance
Series Watts max.* Resistance range Joules max.** Max. working volts
OX 1 3.3Ω-100K 50 300
OY 2 3.3Ω-1M 80 400
* at 70°C. **For a single impulse.
Test Condition Maximum ∆R
Life Test
MIL-STD-202, Method 108 ±5%
Short Time Overload
2x rated V, 5 sec ON @ 70°C ±(2% +0.05Ω)
Resistance to Pulse
1
20,000 cycles. See circuit for test
conditions
±5%
Thermal Shock
MIL-STD-202, Method 107 ±(2% ±0.05Ω)
Moisture Resistance
1000 hrs @ 40°C,
90 - 95% RH
±5%
Resistance to Pulse
R/R
Cycles
0.60%
0.20%
0.00%
100 10,0000 1,000 20,000
0.40%
10 Kohms
1 Kohm
100 ohms
0.80%
R/R
Cycles
0.60%
0.20%
0.00%
100 10,0000 1,000 20,000
0.40%
10 Kohms
1 Kohm
100 ohms
0.80%
DC 20KV
see circuit for
test conditions
OX Series
OY Series
DC 14KV
see circuit for
test conditions
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.
FEATURES
•Replaces1and2watt
carbon composition
resistors
•Meetshighenergy
density demands
•Highpeakpower
•10%Tolerance
Terminals
Pb-free solder-coated axial
Coating
Silicone ceramic
Derating
Linear from 100% @ +70°C to
0% @ +200°C
Operating Temp.
Range
-40°C to +220°C
Tolerance
±10% standard
Power Rating
Based on 70°C free air rating
Temperature
Coefficient
-1300 ±300ppm/°C.
SERIES SPECIFICATIONS
CHARACTERITICS
OX OY
Max Working Voltage
300V 400V
Dielectric Strength
500V 700V
Max Overload Voltage
600V 800V
Max Pulse Voltage
1
14KV 20KV
Pulse Tolerance,
100 pulses
1240V @ 52µF,
40J/ 35 sec.
1640V @ 52µF,
70J/35 sec.
1
See figures
1000 pF
R.U.T.
Max. Pulse
Voltage
10 kohm
1 sec. on / 1 sec. off
14KV and 20KV val-
ues used in circuit as
shown; full voltage
not applied directly to
resistor.
(continued)

Summary of content (2 pages)