Marked 2Y4 to 75Y (E24 series) BZV49 series 1W zener diodes (2.4 - 75V)
Marked C2V4 TO C75 (E24 series) BZV55 series 500mW zener diodes (2.4 - 75V)
The cathode end is indicated by a coloured band.
Coloured band marked devices (MELF/SOD-80)
|
|
|
| Black |
BAS32, BAS45, BAV105 LL4148, 50, 51,53, LL4448 BB241,BB249 |
| Black Brown | LL4148, LL914 |
| Black Orange | LL4150, BB219 |
| Brown Green | LL300 |
| Brown Black | LL4448 |
| Red | BA682 |
| Red Orange | BA683 |
| Red Green | BA423L |
| Red WHite | LL600 |
| Orange Yellow | LL3595 |
| Yellow | BZV55,BZV80,BZV81 series zeners |
| Green | BAV105, BB240 |
| Green Black | BAV100 |
| Green Brown | BAV101 |
| Green Red | BAV102 |
| Green Orange | BAV103 |
| Grey | BAS81, 82, 83, 85, 86 |
| White | BB219 |
| White Green | BB215 |
Some manufacturers have a generic type coding
scheme for MELF and mini-MELF diodes.
That for Vishay/General Semiconductor
is shown below:
|
|
|
| Black | General purpose |
| Yellow | Switching |
| Green | Schottky |
| Blue | Zener |
|
|
|
| Black | Zener |
| Green | Schottky |