Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com49
The OX/OY Series of fixed
ceramic resistors are ideal for
circuitry associated with
surges, high peak power or
high energy. They offer
enhanced performance in high
voltage power supplies,
R-C snubber circuits, and
inrush limiters. The OX/OY
resistors can often replace car-
bon 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
SPECIFICATIONS
Material
Terminals: Solder-coated axial
leads
Coating: UL-94 V0 approved sili-
cone
Derating: Linear from 100% @
+70°C to 0% @ +200°C
Electrical
Tolerance: ±10% standard
Power Rating: Based on 70°C
free air rating.
Temperature Coefficient:
-1300± 300ppm/°C.
OX/OY Series
Ceramic Composition
10% Tolerance
Dimensions (in. /
mm
) Max
Watts Resistance Length L Lead Joules Working
Series max.* min. max. max. Diameter D diameter max.** volts
OX 1 3.3 100K 0.67 /
17.0
0.217 ±.05/
5.5±1
0.031 /
0.8
50 300
OY 2 3.3 1M 0.89 /
22.6
0.276 ±.05/
7.0±1
0.031 /
0.8
80 400
* at 70°C. **For a single impulse.
LD
1.496
(38.3
±
3)
PERFORMANCE CHARACTERISTICS
Test OX OY
Max Working Voltage 300V 400V
Dielectric Strength 500V 700V
Max Overload Voltage 600V 800V
Max Pulse Voltage114KV 20KV
Pulse Tolerance, 100 pulses 1240V @ 52µF, 40J/ 35 sec. 1640V @ 52µF, 70J/35 sec.
Test Condition Maximum ∆R
Life Test MIL-STD-202, Method 108 ±5%
Short Time Overload 2x rated V, 5 sec ON @ 70°C ±(2% + 0.05ohm)
Resistance to Pulse120,000 cycles 1 sec ON, 1 sec OFF ±5%
Thermal Shock MIL-STD-202, Method 107 ±(2% ± 0.05 ohm)
Moisture Resistance 1000 hrs @ 40°C, 90 - 95% RH ±5%
1Related text, see figures left
RESISTANCE TO PULSE
STOCK PART NUMBERS FOR STANDARD RESISTANCE VALUES
3.3 OY33GK
3.9 OX39GK OY39GK
4.7 OX47GK OY47GK
5.6 OX56GK OY56GK
6.8 OX68GK OY68GK
8.2 OX82GK OY82GK
10 OX100K OY100K
12 OX120K OY120K
15 0X150K OY150K
18 OX180K OY180K
22 OX220K OY220K
27 OX270K OY270K
33 OX330K OY330K
39 OX390K OY390K
47 OX470K OY470K
56 OX560K OY560K
68 OX680K OY680K
Part Number
Ohms 1 Watt 2 Watt
82 OX820K OY820K
100 OX101K OY101K
120 OX121K OY121K
150 OX151K OY151K
180 OX181K OY181K
220 OX221K OY221K
270 OX271K OY271K
330 OX331K OY331K
390 OX391K OY391K
470 OX471K OY471K
560 OX561K OY561K
680 OX681K OY681K
820 OX821K OY821K
1,000 OX102K OY102K
1,200 OX122K OY122K
1,500 OX152K OY152K
1,800 OX182K OY182K
Part Number
Ohms 1 Watt 2 Watt
Part Number
Ohms 1 Watt 2 Watt
Part Number
Ohms 1 Watt 2 Watt
OX33GK 2,200 OX222K OY222K
2,700 OX272K OY272K
3,300 OX332K OY332K
3,900 OX392K OY392K
4,700 OX472K OY472K
5,600 OX562K OY562K
6,800 OX682K OY682K
8,200 OX822K OY822K
10,000 OX103K OY103K
12,000 OX123K OY123K
15,000 OX153K OY153K
18,000 OX183K OY183K
22,000 OX223K OY223K
27,000 OX273K OY273K
33,000 OX333K OY333K
39,000 OX393K OY393K
47,000 OX473K OY473K
56,000 0X563K OY563K
68,000 OX683K OY683K
82,000 OX823K OY823K
100,000 OX104K OY104K
120,000 ——— OY124K
150,000 ——— OY154K
180,000 ——— OY184K
220,000 ——— OY224K
270,000 ——— OY274K
330,000 ——— OY334K
390,000 ——— OY394K
470,000 ——— OY474K
560,000 ——— OY564K
680,000 ——— OY684K
820,000 ——— OY824K
1 MEG ——— OY105K
∆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 14KV
1 sec. on
1 sec. off
∆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
1 sec. on
1 sec. off
OX Series
OY Series
