Ready to onboard?
Are you ready to join DistyParts and
grow your business?
| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
4,000 pcs
|
4000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Base - Emitter Saturation Voltage | |
| Base Current | |
| Collector Cut-off Current (Maximum @ VCE = 1500 V, VBE = 0) | |
| Collector Cut-off Current (Maximum @ VCE = 1500 V, VBE = 0, TC = 125 °C) | |
| Collector-Emitter Sustaining Voltage | |
| Collector-Emitter Voltage (VCES) | |
| Current | |
| Emitter Cut-off Current | |
| Fall Time (Inductive Load) | |
| Mounting Type | |
| Operating Temperature | |
| Packing | |
| Peak Base Current | |
| Peak Collector Current | |
| Power | |
| Second Breakdown Current | |
| Storage Temperature | |
| Storage Temperature Range | |
| Storage Time (Inductive Load) | |
| Supplier Device Package | |
| Thermal Resistance - Junction to Case | |
| Transistor Type | |
| Vce Saturation (Max) @ Ib, Ic | |
| Voltage |
The BU505 is a high voltage NPN multiepitaxial fast-switching transistor from STMicroelectronics. It is designed for lighting applications such as electronic ballasts for fluorescent lamps, and its characteristics also make it suitable for switch-mode power supplies. The device offers a collector-emitter voltage (VCES) of 1500 V when the base-emitter is shorted and a collector-emitter voltage (VCEO) of 700 V when the base is open.
The transistor is rated for a continuous collector current of 2.5 A and a peak collector current of 4 A. Base current is specified at 1 A, with a peak base current of 2 A. Maximum power dissipation is 75 W at a case temperature of 25 °C. Collector-emitter saturation voltage is 1 V at IC = 2 A and IB = 0.9 A, while base-emitter saturation voltage is 1.3 V under the same conditions.
The BU505 is supplied in a TO-220 package with through-hole mounting and tube packing. Its junction-to-case thermal resistance is 1.67 °C/W, and the maximum operating junction temperature is 150 °C. Storage temperature range is -65 °C to 150 °C. These specifications make the BU505 suited for high-voltage, fast-switching applications in lighting and power supply circuits.
| Qty | Low | High |
|---|---|---|
| 1,000+ | $0.43 | $0.43 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The BU505 has a 700 V VCEO rating (IB = 0) and a 1500 V VCES rating (VBE = 0).
The BU505 is available in a TO-220-3 package with through-hole mounting and tube packing.
The maximum operating junction temperature is 150 °C, with a storage temperature range of -65 to 150 °C.
The BU505 is listed as RoHS3 Compliant, though this status is unverified.
The maximum collector current is 2.5 A continuous, with a 4 A peak current (tP < 5 ms).
The maximum power dissipation is 75 W at a case temperature of 25 °C.
VCE(sat) is 1 V and VBE(sat) is 1.3 V at IC = 2 A and IB = 0.9 A.