The BD435G is a highly versatile bipolar junction transistor (BJT) from ON Semiconductor, known for its reliability and efficiency in a wide range of electronic applications. This power transistor is designed for medium power linear and switching applications, making it suitable for both industrial and consumer markets.

Key Features:

• Device Type: BJT - Bipolar Junction Transistor
• Configuration: Single
• Collector-Emitter Voltage VCEO Max: 32 V
• Collector-Base Voltage VCBO: 40 V
• Emiter-Base Voltage VEBO: 5 V
• Collector Current - Continuous IC: 4 A
• Power Dissipation Pd: 36 W
• DC Current Gain hFE: 40 at 3 A, 2 V
• Operating and Storage Junction Temperature Range: -65°C to +150°C
• Package / Case: TO-225

The BD435G transistor is capable of handling a collector current up to 4 A, which allows it to drive medium power circuits efficiently. With a collector-emitter voltage of 32 V and a collector-base voltage of 40 V, it can be used in a variety of circuits without the risk of breakdown. The device also features a decent power dissipation of 36 W, which contributes to its robustness in challenging conditions.

Its DC current gain (hFE) is 40 at 3 A, 2 V, indicating a moderate level of amplification, suitable for applications requiring a specific level of gain control. The operating and storage junction temperature range of -65°C to +150°C ensures that the BD435G can withstand extreme environmental conditions, making it reliable for use in outdoor or high-temperature environments.

The BD435G is housed in a TO-225 package, which is a through-hole mounting design that facilitates easy integration into various circuit boards. This package is well-known for its ability to dissipate heat effectively, which is critical for maintaining stability and extending the lifespan of the transistor.

Overall, the ON Semiconductor BD435G is a solid choice for designers and engineers looking for a transistor that offers a balance of power handling, voltage rating, and thermal performance for their medium power applications.