Ⅰ: Code of product series: three-digit
120: series 120 encoder
Ⅱ: Code of height: double-digit
28: H=2.8mm 45: H=4.5mm
Ⅲ: Code of factory mark: single-digit
0: without mark
1: with “TTC” mark
2: with“
”mark
Ⅳ: Output wave: single-digit
0: 12 detents, 12 pulses
1: 12 detents, 6 pulses
Ⅴ: Code of product life: single-digit
5: 50,000 cycles
0: 100,000 cycles
Ⅵ: Code of tongue force: single-digit
0: standard force: 20 gf.cm
Ⅶ: Mounting method: single-digit
0: DIP type 1: SMT type
Ⅷ: Derivative code: double-digit
00: without special items
Ⅸ: Type of package: single-digit
0=plastic bag 1=shrinked plastic package
2=tape package 3=tube package
4=foam package 5=undetermined