This product has been
DISCONTINUED
The MX Series Metal Oxide
Resistors provide stable per-
formance at low cost across a
wide resistance range. They
can be used as a substitute for
wirewounds when short time
overloads are limited to 2.5
times rated power, and when
higher TCRs can be tolerated.
S P E C I F I C A T I O N S
Material
Coating: Flame retardant silicone
Core: High purity ceramic.
Terminals: Solder-coated axial
lead.
MX Series
Metal Oxide Resistors
5% Tolerance
Electrical
RoHS Compliant
Max overload voltage:
MX1, MX2 and MX3: 600 V
MX5: 800V
Derating: Linearly from 100% @
+70°C to 0% @ 155°C
Temperature coefficient:
±350 ppm/°C
Dielectric withstanding voltage:
MX1 and MX2: 350V
MX3 and MX5: 500V
28mm ± 3
(38mm on MX5)
L
D
F E A T U R E S
• Economical
• High power density
• Flame retardant coating
• Wide resistance range
• Quantity per reel:
MX1 = 2500
Dimensions (in. / mm)
Lead Dia.
Series Wattage Ohms Max. Length Max. Diam. Voltage (mm)
MX1
MX2
MX3
MX5
1
2
3
5
0.30-50K 0.394 / 10.0
0.30-50K 0.472 / 12.0
5-100K 0.630 / 16.0
5-150K 0.985 / 25.0
0.158 / 4.0
0.197 / 5.0
0.217 / 5.5
0.315 / 8.0
350
350
350
500
0.70
0.70
0.80
0.80
MX2 = 2500
MX3 = 1000
MX5 = 500 (bulk only)
O R D E R I N G I N F O R M AT I O N
S P E C I F I C AT I O N S
General Specifications
Power Rating @ 70°C
Power Derating
MX1
MX2
MX3
3W
MX5
5W
RoHS Compliant
1W
2W
� ꢀ ꢁ ꢂ ꢁ ꢃ ꢄ ꢅ ꢆ ꢄ ꢇ ꢈ
Linearly from 100% @ +70°C to 0% @ + 155°C
±350 ppm / °C
Temperature Coefficient
Operating Temperature
Max. Working Voltage
Max. Overload Voltage
Dielectric Withstanding Voltage
Resistance Range (Ω)
Series
Tolerance Ohms
Packaging Code
MX1 = 1W J = 5%
MX2 = 2W K = 10%
MX3 = 3W
< 1.0 ohm = Rxx R58 = 58mm axial Tape & Reel
1.0 ohm = 1R0 R52 = 52mm axial Tape & Reel
-55°C to +155°C
350
600
350
350
600
350
350
600
500
500
800
500
10 ohm = 10R
A = Tape & Ammo Pac
MX5 = 5W
100 ohm = 100
1000 ohm = 1K0
10,000 ohm = 10K
100,000 ohm = 100K
0.3-50KΩ 0.3-50KΩ 0.3-50KΩ 5.0Ω-150KΩ
Dimensions (in./mm)
L (max.)
D (max.)
0.394/10.0 0.472/12.0 0.630/16.0 0.984/25.0
0.157/4.0
0.027/0.7
0.197/5.0 0.217/5.5
0.027/0.7 0.031/0.8
0.315/8.0
0.031/0.8
Lead dia. +0.0008/0.02
-0.002/0.05
Note: Extended resistance range to 1MΩ available by special request.
S TA N D A R D P A R T N U M B E R S F O R S TA N D A R D R E S I S TA N C E V A L U E S
Wattage
Wattage
Wattage
Wattage
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
0.39 –––R39
0.47 –––R47
0.56 –––R56
0.75 –––R75
1.0 –––1R0
1.5 –––1R5
2.0 –––2R0
2.2 –––2R2
2.7 –––2R7
3.0 –––3R0
3.6 –––3R6
4.7 –––4R7
5.6 –––5R6
6.8 –––6R8
7.5 –––7R5
8.2 –––8R2
10.0 –––10R
15.0 –––15R
20.0 –––20R
22.0 –––22R
27.0 –––27R
30.0 –––30R
36.0 –––36R
47.0 –––47R
56.0 –––56R
68.0 –––68R
75.0 –––75R
82.0 –––82R
270
300
360
470
560
680
750
820
1,000
1,500
2,000
2,200
2,700
3,000
3,600
3,900
–––270
–––300
–––360
–––470
–––560
–––680
–––750
–––820
–––1K0
–––1K5
–––2K0
–––2K0
–––2K7
–––3K0
–––3K6
–––3K9
4,700 –––4K7
5,600 –––5K6
6,800 –––6K8
7,500 –––7K5
8,200 –––8K2
10,000 –––10K
15,000 –––15K
20,000 –––20K
22,000 –––22K
27,000 –––27K
30,000 –––30K
36,000 –––36K
47,000 –––47K
56,000 –––56K
68,000 –––68K
82,000 –––82K
100,000 –––100K
100
–––100
–––150
–––200
–––220
150
200
220
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.com