40J270E

Manufacturer Part Number40J270E
DescriptionRESISTOR SILICONE 270 OHM 10W
ManufacturerOhmite
Series40
40J270E datasheet
 


Specifications of 40J270E

Resistance (ohms)270Power (watts)10W
CompositionWirewoundTemperature Coefficient±20ppm/°C
Tolerance±5%Size / Dimension0.406" Dia x 1.902" L (10.30mm x 48.30mm)
Lead StyleThrough HolePackage / CaseAxial
Resistance In Ohms270CaseAxial
Lead Free Status / RoHS StatusLead free / RoHS CompliantFeatures-
Height-  
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F e A T u r e S
S p e C i F i C A T i O n S
Material
• Economical
Coating: Conformal silicone-
• Applications include commercial,
industrial and communications
ceramic.
equipment
Core: Ceramic.
• Stability under high temperature
Terminals: Solder-coated copper
conditions
clad axial. RoHS solder com-
• All-welded construction
position is 96% Sn, 3.5% Ag,
0.5% Cu
• RoHS compliant; add “E” suffix
Derating
to part number to specify.
Linearly from
100% @ +25°C to
0% @ +275°C.
Electrical
Tolerance: ±5% (J type), ±1%
(F type) (other tolerances avail-
able).
o r d e r i n g i n f o
40 Series
Ohmicone
®
Non-Inductive
Silicone Ceramic
Winding
Conformal Axial
Optional (blank
RoHS
Term. Wirewound
= std. winding)
Compliant
4 1
N
J R 1 0 E
Wattage
Tolerance
Resistance Value
1 = 1W
F= 1%
R10 = 0.10Ω
2
J = 5%
1R0 = 1.0Ω
3
10R = 10.0Ω
5
250 =
250Ω
7
1K0 = 1,000Ω
0 = 10W
4K5 = 4,500Ω
50K = 50,000Ω
Wattage and Tolerance
1% Tolerance
5% Tolerance
part no.
Prefix 
Suffix
0.1
–––R10
        
0.15 –––R15
        
0.2
–––R20
        
0.25 –––R25
 
0.3
–––R30
        
0.33 –––R33
 
0.4
–––R40
       
0.5
–––R50
        
0.75 –––R75
      
1
–––1R0
        
1.5
–––1R5
        
2
–––2R0
        
2.2
–––2R2
        
3
–––3R0
  
    
4
–––4R0
        
5
–––5R0
        
7.5
–––7R5
   
   
10
–––10R
        
12
–––12R
     
15
–––15R
  
  
18
–––18R
  
20
–––20R
   
   
22
–––22R
  
    
25
–––25R
  
   
27
–––27R
  
   
30
–––30R
   
 
33
–––33R
 
   
35
–––35R
   
39
–––39R
 
  
40
–––40R
   
 
47
–––47R
 
    
50
–––50R
        
56
–––56R
 
     
62
–––62R
   
 
Ohmite Mfg. Co.
1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Axial Term. Wirewound, 1% and 5% Tol. Std.
1.5 in. / 38.1mm
Series Wattage
41
1.0
42
2.0
43
3.0
Power rating: Based on
45
5.0
25°C free air rating (other
47
7.0
wattages available).
40
10.0
Overload: Under 5 watts:
5 times rated wattage for 5
Non-Inductive versions available. Insert “N” before tolerance code. Example: 42NJ27R
seconds. 5 watts and over:
10 times rated wattage for
Ohmite 40 Series resistors are the most economical conformal
5 seconds.
silicone-ceramic coated resistors offered. These all-welded units
Temperature coefficient:
are characterized by their low temperature coefficients and resis-
Under 1Ω: ±90 ppm/°C
tance to thermal shock, making them ideal for a wide range of
1Ω to 9.99Ω: ±50 ppm/°C
electrical and electronic applications.
10Ω and over: ±20
Units with 1% and 5% tolerances are identical in construction
ppm/°C
and electrical specifications. Durable but economical 40 Series
resistors exceed industry requirements for quality.
S t a n d a r d p a r t n u m b e r S f o r 4 0 S e r i e S
Wattage and Tolerance
1% Tolerance
5% Tolerance
part no.
Prefix 
Suffix
68
–––68R
       
75
–––75R
 
     
82 –––82R
      
100 –––100
        
120 –––120
  
  
125 –––125
 
150 –––150
  
    
180 –––180
 
  
200 –––200
        
220 –––220
 
225 –––225
250 –––250
        
270 –––270
 
  
300 –––300
      
330 –––330
   
350 –––350
390 –––390
    
400 –––400
  
450 –––450
 
470 –––470
  
   
500 –––500
   
  
560 –––560
    
600 –––600
   
680 –––680
 
    
750 –––750
    
800 –––800
   
820 –––820
  
   
900 –––900
 
1,000 –––1K0
        
1,100 –––1K1
 
1,200 –––1K2
 
1,500 –––1K5
  
  
1,800 –––1K8
 
2,000 –––2K0
   
40 Series
Ohmicone
Silicone-Ceramic Conformal
®
L
D
Dimensions (in. / mm)
Ohms
Length
Diam.
0.10-6K
0.437 / 11.1
0.125 / 3.2
0.10-8K
0.406 / 10.3
0.219 / 5.6
0.10-20K
0.593 / 15.1
0.219 / 5.6
0.10-70K
0.937 / 23.8
0.343 / 8.7
0.10-80K
1.280 / 32.5
0.343 / 8.7
0.10-150K
1.900 / 48.3
0.406 / 10.3
Wattage and Tolerance
1% Tolerance
part no.
Prefix 
Suffix
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
  
 = Non-standard values subject to mini-
mum handling charge per item
 
www.ohmite.com
Check product availability at
  
Lead
Voltage
ga.
150
24
100
20
200
20
460
18
670
18
1000
18
5% Tolerance
  
  
 
   
 
  
  
 
 
  
  
Shaded values
involve very fine
resistance wire
and should not
be used in criti-
cal applications
without burn-in
and/or thermal
cycling.
21