CMLT5554 TR PBFREE

Overview

The CMLT5554 TR PBFREE is a dual NPN bipolar junction transistor (BJT) array manufactured by Central Semiconductor Corp. It is housed in an SOT-563 surface-mount package and supports a collector-emitter breakdown voltage of 160V with a maximum continuous collector current of 600mA. The device features a transition frequency of 300MHz and a power dissipation rating of 350mW. DC current gain is specified at a minimum of 80 under test conditions of 10mA collector current and 5V collector-emitter voltage. Saturation voltage is limited to 200mV at 50mA collector current, while collector cutoff current remains below 50nA.

Feature Summary

• Dual NPN configuration within a compact SOT-563 surface-mount footprint
• High-voltage capability suitable for switching applications up to 160V
• Broad operating temperature range extending from -65°C to +150°C junction temperature

Applications

• General-purpose switching circuits requiring dual NPN logic
• Low-power amplifier stages utilizing high-voltage tolerance
• Interface drivers in industrial control modules

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm lead-free status and tape-and-reel packaging specifications. Ensure that the procurement channel sources directly from authorized distributors or the manufacturer to guarantee component authenticity and traceability. Cross-reference the part number with the latest datasheet revisions to confirm compliance with current environmental regulations such as RoHS directives before finalizing purchase orders.

Selection Notes

Select this component when a dual NPN topology is required in a small outline package with high voltage blocking capabilities. The 300MHz transition frequency supports moderate-speed digital switching applications. Evaluate thermal management requirements carefully, as the 350mW power dissipation limit in an SOT-563 package necessitates adequate PCB copper area for heat spreading during continuous operation.

Part Context

This part belongs to the CMLT series of dual NPN transistor arrays produced by Central Semiconductor Corp. These devices are designed to replace discrete dual-transistor solutions, saving board space and simplifying assembly processes. The series typically offers matched electrical characteristics between the two internal transistors, ensuring balanced performance in differential or push-pull configurations.

Replacement Considerations

Direct pin-compatible replacements may include other dual NPN arrays in SOT-563 packages from manufacturers like Diodes Incorporated or ON Semiconductor, provided they meet or exceed the 160V Vceo and 600mA Ic ratings. Verify saturation voltage and hFE ranges to ensure circuit compatibility.