Trimpot code reader Type the 3 digits printed on a trimpot or preset
10 kΩ
= 10,000 Ω
First two digits 10, then 3 zeros: 10 000 Ω.
Trimpots and presets show their value as 3 digits: the first two are the number and the third is how many zeros to add, in ohms. So 103 is 10,000 Ω (10K) and 105 is 1,000,000 Ω (1M). Rotary pots print the value directly, like B10K, where B means linear.
About Trimpots & Presets
PCB trimmer potentiometers for setting a value once with a screwdriver: RM065 blue presets, 3386P, 3296 multiturn (25 turns, for fine adjustment), SMD and open frame presets, sorted by value. The 3-digit code on top is the value in ohms: two digits, then the number of zeros, so 103 = 10,000Ω = 10K and 104 = 100K.


