The CA3083E is a high-voltage, high-current transistor array manufactured by Rochester Electronics. It contains five general-purpose silicon NPN transistors on a common monolithic substrate. Each transistor is electrically isolated from the others, allowing for a wide range of applications in both analog and digital circuits. This versatile array is particularly useful in applications requiring multiple matched transistors with similar characteristics.

Applications:

• Differential amplifiers, where matched transistor characteristics are crucial for performance.
• Sense amplifiers, to detect and amplify small changes in current or voltage.
• Lamp drivers, where the transistors can switch relatively high currents to drive indicator lamps or small relays.
• Thyristor firing circuits, providing controlled gate pulses to trigger thyristors in power control applications.
• Interface circuits, providing a bridge between different voltage levels or logic families.

Features:

• Five NPN transistors in a single package, reducing component count and board space.
• High voltage capability, enabling use in applications with up to 30V supply voltage.
• High current capability, each transistor can handle up to 100mA of collector current.
• Excellent transistor matching, ensuring consistent performance across all five transistors.
• Electrically isolated transistors, preventing unwanted interaction or feedback between the transistors.

Benefits:

• Simplified circuit design, due to the availability of multiple matched transistors in a single package.
• Reduced component costs, by replacing individual transistors with a single integrated solution.
• Improved circuit performance, because the close matching of the transistors results in more stable and predictable behavior.
• Increased system reliability, as the monolithic construction improves robustness and reduces the risk of component failure.
• Enhanced space efficiency, allowing for smaller and more compact circuit designs.

Additional Details:

The CA3083E typically comes in a 16-lead DIP (Dual In-line Package). Key specifications include a collector-emitter voltage (VCEO) of 30V, a collector current (IC) of 100mA, and a power dissipation of 800mW for the entire package. The transistors have a typical current gain (hFE) of 100 and a transition frequency (fT) of 100MHz. It is important to note that Rochester Electronics specializes in the continued manufacturing of discontinued or obsolete components, ensuring the availability of this part for legacy systems and long-lifecycle applications. The CA3083E is commonly used in instrumentation, control systems, and industrial electronics.