Transistor,
| Parameter Name | Attribute value |
| Is it Rohs certified? | incompatible |
| package instruction | , |
| Reach Compliance Code | unknown |
| Maximum collector current (IC) | 3 A |
| Configuration | DARLINGTON |
| Minimum DC current gain (hFE) | 1000 |
| JESD-609 code | e0 |
| Maximum operating temperature | 150 °C |
| Polarity/channel type | PNP |
| Maximum power dissipation(Abs) | 8 W |
| surface mount | YES |
| Terminal surface | Tin/Lead (Sn/Pb) |
| Nominal transition frequency (fT) | 10 MHz |
| Base Number Matches | 1 |

| BDS649 | BDS651 | BDS643 | BDS645 | |
|---|---|---|---|---|
| Description | Transistor, | Transistor, | Transistor, | Transistor, |
| Is it Rohs certified? | incompatible | incompatible | incompatible | incompatible |
| Reach Compliance Code | unknown | unknown | unknown | unknown |
| Maximum collector current (IC) | 3 A | 3 A | 3 A | 3 A |
| Configuration | DARLINGTON | DARLINGTON | DARLINGTON | DARLINGTON |
| Minimum DC current gain (hFE) | 1000 | 1000 | 1000 | 1000 |
| JESD-609 code | e0 | e0 | e0 | e0 |
| Maximum operating temperature | 150 °C | 150 °C | 150 °C | 150 °C |
| Polarity/channel type | PNP | PNP | PNP | PNP |
| Maximum power dissipation(Abs) | 8 W | 8 W | 8 W | 8 W |
| surface mount | YES | YES | YES | YES |
| Terminal surface | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) |
| Nominal transition frequency (fT) | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| Base Number Matches | 1 | 1 | 1 | 1 |