40 Series

40 Series
Ohmicone Silicone-Ceramic Conformal
Axial Terminal Wirewound
1% and 5% Tolerance Standard
®
Ohmite 40 Series resistors are the most economical
conformal silicone-ceramic coated resistors offered.
These all-welded units are characterized by their low
temperature coefficients and resistance to thermal
shock, making them ideal for a wide range of electrical and electronic applications.
Units with 1% and 5% tolerances are identical in
construction and electrical specifications. Durable
but economical 40 Series resistors exceed industry
requirements for quality.
F e at u r e s
•Economical
•Applications include commercial, industrial and
communications equipment
•Stability under high temperature conditions
•All-welded construction
•RoHS compliant; add “E” suffix to part number to
specify.
S e r i e s S P E C I F I C ATI O N S
Series
41
42
43
45
47
40
Wattage
1.0
2.0
3.0
5.0
7.0
10.0
Ohms
0.10-6K
0.10-8K
0.10-20K
0.10-70K
0.10-80K
0.10-150K
Voltage
150
100
200
460
670
1000
Non-Inductive versions available. Insert “N” before tolerance code.
Example: 42NJ27R
C h a r a c t e r i s t i cs
Coating Conformal silicone-ceramic.
Core Ceramic.
Terminals Solder-coated copper clad axial. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu
Derating Linearly from 100% @ +25°C to 0% @ +275°C.
Tolerance ±5% (J type), ±1% (F type) (other tolerances available).
Power rating Based on 25°C free air rating
Overload Under 5 watts: 5 times rated wattage for 5 seconds. 5 watts and over: 10 times rated wattage for 5 seconds.
Temperature coefficient Under 1Ω: ±90 ppm/°C; 1Ω to 9.99Ω: ±50 ppm/°C; 10Ω and over: ±20 ppm/°C
D i m e ns i ons
Series
(in./mm max.)
1.5 in. / 38.1mm
L
D
Wattage
Length
Diam.
41
1.0
0.437 / 11.1
0.125 / 3.2
Lead ga.
24
42
2.0
0.406 / 10.3
0.219 / 5.6
20
43
3.0
0.593 / 15.1
0.219 / 5.6
20
45
5.0
0.937 / 23.8
0.343 / 8.7
18
47
7.0
1.280 / 32.5
0.343 / 8.7
18
40
10.0
1.900 / 48.3
0.406 / 10.3
18
(continued)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
85
40 Series
Ohmicone Silicone-Ceramic Conformal
Axial Terminal Wirewound
1% and 5% Tolerance Standard
®
O R D ERI N G I N F O RMATI O N
Standard part numbers

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
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

40 Series
Ohmicone®
Silicone Ceramic
Conformal Axial
Term. Wirewound
Non-Inductive
Winding
Optional (blank
= std. winding)
41NJR10E
Wattage
1 = 1W
2
3
5
7
0 = 10W
86
40J––– 10
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
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
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







2,200 –––2K2  
2,500 –––2K5  
2,700 –––2K7  
3,000 –––3K0  
3,300 –––3K3 
3,500 –––3K5 
3,900 –––3K9 
4,000 –––4K0 
4,500 –––4K5 
4,700 –––4K7 
5,000 –––5K0 
6,000 –––6K0 
6,800 –––6K8 
7,000 –––7K0 
7,500 –––7K5 
8,000 –––8K0 
9,000 –––9K0 
10,000 –––10K 
12,000 –––12K
13,000 –––13K
15,000 –––15K
17,000 –––17K
20,000 –––20K
22,000 –––22K
25,000 –––25K
30,000 –––30K
33,000 –––33K
35,000 –––35K
40,000 –––40K
50,000 –––50K
 = Standard values
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     
     
     
     

  

  

  

  

  

  
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  

  

  

  
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  
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  

  

  



Shaded values

involve very fine
resistance wire

and should not

be used in critical applications

without burn-in

and/or thermal
cycling.




 = Non-standard values subject to minimum handling charge per item
RoHS
Compliant
Tolerance Resistance Value
F= 1%
R10 = 0.10Ω
J = 5%
1R0 = 1.0Ω
10R = 10.0Ω
250 =
250Ω
1K0 = 1,000Ω
4K5 = 4,500Ω
50K = 50,000Ω
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
45J––– 5
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43J––– 3
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42J––– 2
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41J––– 1
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40F––– 10
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45F––– 5
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43F––– 3
–––68R
–––75R
–––82R
–––100
–––120
–––125
–––150
–––180
–––200
–––220
–––225
–––250
–––270
–––300
–––330
–––350
–––390
–––400
–––450
–––470
–––500
–––560
–––600
–––680
–––750
–––800
–––820
–––900
–––1K0
–––1K1
–––1K2
–––1K5
–––1K8
–––2K0
Part No.
Prefix 
Suffix
41F––– 1
68
75
82
100
120
125
150
180
200
220
225
250
270
300
330
350
390
400
450
470
500
560
600
680
750
800
820
900
1,000
1,100
1,200
1,500
1,800
2,000
Ohmic value

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40J––– 10
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45J––– 5
40J––– 10
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
43J––– 3
45J––– 5
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42J––– 2
43J––– 3
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
41J––– 1
42J––– 2
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40F––– 10
41J––– 1
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45F––– 5
40F––– 10

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
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
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43F––– 3
45F––– 5
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41F––– 1
43F––– 3
–––R10
–––R15
–––R20
–––R25
–––R30
–––R33
–––R40
–––R50
–––R75
–––1R0
–––1R5
–––2R0
–––2R2
–––3R0
–––4R0
–––5R0
–––7R5
–––10R
–––12R
–––15R
–––18R
–––20R
–––22R
–––25R
–––27R
–––30R
–––33R
–––35R
–––39R
–––40R
–––47R
–––50R
–––56R
–––62R
Ohmic value
41F––– 1
0.1
0.15
0.2
0.25
0.3
0.33
0.4
0.5
0.75
1
1.5
2
2.2
3
4
5
7.5
10
12
15
18
20
22
25
27
30
33
35
39
40
47
50
56
62
Part No.
Prefix 
Suffix

Part No.
Prefix 
Suffix
Wattage and Tolerance
1% Tolerance
5% Tolerance


Wattage and Tolerance
1% Tolerance
5% Tolerance
Ohmic value
Wattage and Tolerance
1% Tolerance
5% Tolerance