SMD or SMT Resistor ki value ko read krna Through Hole Resistor (THT) ki compare mai bhut easy hai. THT components mai colours ke according ham resistance ki value ko nikalte hai isliye hme colours ko yaad krna pdhta hai but SMD mai yh bhut hi simple hota hai.
SMD resistor ki value ko simple mathematical expression se bhut fast jaan skte hai.
(1). SMD Resistors |
Kisi bhi Resistor mai minimum 1 digit or maximum 4 digit hoti hai. In digits ke according ham resistance ki value calculate krte hai.
1. Digit code -
One digit code sirf '0' ohm ke liye hi hota hai. 0 ohm ko 1 to 4 digit kisi me bhi likha ja skta hai. Number of digit tolerance ko show krta hai. Tolerance ke bare me ham aage discuss krege.
2. Digit code-
Isme resistance ke upper kewal 2 Digit ya character hote hai.
Example- kisi resistance ke upper 1R, 1E, 3R, 5R etc. likha hai to uski value hogi ----
1R - 1ohm
1E - 1ohm
3R - 3 ohm
5R - 5 ohm
3. Digit code -
Isme resistance ke upper kewal 3 Digit ya character hote hai.
Example- kisi resistance ke upper 1R3, 3ER, 100, 123, 471 etc. likha hai to uski value hogi ----
1R3 - 1.3 Ohm
3R3 or 3E3 - 3.3ohm
100 = 10x100
= 10x1
So 100 = 10 ohm
123 = 12x103
= 12x 1000
So 123 = 12000 ohm or 12K ohm
471 = ? (For you)
4- Digit code
Isme resistance ke upper kewal 4 Digit ya character hote hai.
Example- kisi resistance ke upper 47R0, 1001, 5101, 2203 etc. likha hai to uski value hogi ----
(2) 4 Digit SMD Resistor |
Example -
47R0 = 47 x 100
= 47 x 1
So 47R0 = 47 ohm
1001 = 100 x 101
= 100 x 10
So 1001 = 1000 ohm or 1K ohm
5101 = 510 x 101
= 510 x 10
So 5101 = 5100 ohm or 5.1K ohm or 5K1 ohm
2203 = 220 x 103
= 220 x 1000
So 2203 = 220000 ohm or 220K ohm
Note - SMD resistor mai 'R, E' Ohm ko show krta hai or 'K' Kilo ohm ko show krta hai. SMD Resistor mai R, E ka use point(.) ko denote krne ke liye kiya jata hai. Example 1R5ohm, ise ham 1.5 ohm likhege to point hme acche se dikhai nhi dega isliye reistor ke upper point ki jgah R or E likna jayada best rhta hai.
So friends, Upper diye eample ke according aap kisis bhi resistance ki value calulate kar skte hai.
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