Larcan Inc MXI101U 사용자 설명서

Generic carbon composition resistors with leads are numbered as follows: 

3R 

 

P 

nnnx 

- or - 

nnx 

 

 

Power Rating

 

Resistance Value *

Tolerance

 

152 = 1/4W 

 

nn -  

first digits of 

K =10% 

 

77 = 1/2W 

 

resistance (5, 10% tol.) 

J  =5% 

 

78 = 1W 

 

nnn -   first digits of 

H  =1% 

 

79 = 2W 

 

resistance (1% tol.) 

 

 

 

 

x - x10 multiplier 

 

For values between 1Ω and 10Ω, a letter “R” will appear in the resistance value to indicate the decimal place. 

For vendor leaded resistors a generic drawing describing basic specifications, but having many “parts”, will often 
be used.  

“3R152P5R6J” is 5.6Ω, 1/4W, ±5% 

“3R152P470K” is 47Ω, 1/4W, ±10%  

“3R152P1022H” is 10.2kΩ, 1/4W, ±1%  

“3R152P102J” is 1kΩ, 1/4W, ±5% 

There is no specified recommended supplier of these parts. The Philips numbering system is employed with the 
following parameters/designations (example follows):   

9C 

 

 

A nnnx 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.6x08mm 

 = 1/16W 

 nnx 

tolerance>=5%  D=0.5%  

=50ppm/°C 

 

 

 

 

 

nn=first 2 digits 

 

 

  

 

 

 

x=multiplier 

=1%  

100ppm/°C 

 

2x1.25mm 

 = 1/10W 

 

 

 

 

  

 

 

nnnx tolerance<5% 

=5% 

=200ppm/°C 

 

 

 

 

 

nnn=first 3 digits 

 

 

 

3.2x1.6mm 

 = 1/8W 

(1% tol.) 

  x=multiplier 

 

=300ppm/°C 

 

 

 =1/4W 

(5% tol.) 

 

 

 

 

 

 

 

 

nRnx  or  nnRnx  or nRnnx 

 

 

   

 

 

R inserted as decimal point 
where required 

 

 

 

 

 

 

 

 

 

 

 

 

 

0000 - four zeros for jumper 

 

 

The pairs of parameters enclosed in boxes are normally mutually selected; for example, a resistor having 1% 
tolerance normally is selected as having a temperature coefficient of 100ppm/°C. 

 

TSM20-350 Rev 0 February 8, 2006 

20-350-6 

MXi Technical Service Manual