The JEDEC EIA370 transistor device numbers usually start with "2N", indicating a three-terminal device (dual-gate field-effect transistors are four-terminal devices, so begin with 3N), then a 2, 3 or 4-digit sequential number with no significance as to device properties (although early devices with low numbers tend to be germanium). For example, 2N3055 is a silicon n–p–n power transistor, 2N1301 is a p–n–p germanium switching transistor. A letter suffix (such as "A") is sometimes used to indicate a newer variant, but rarely gain groupings. COUNT 5
QSN1 What does the JEDEC EIA370 transistor number start with? ANS1 2N QSN2 what does the 2N is the JEDEC EIA370 mean? ANS2 a three-terminal device QSN3 What follows the 2N in a JEDEC EIA370? ANS3 a 2, 3 or 4-digit sequential number with no significance as to device properties QSN4 What does a letter at the end of a device number mean? ANS4 a newer variant QSN5 What does the number 2N1301 indicate? ANS5 a p–n–p germanium switching transistor