FMBA14

Overview

The FMBA14 is a multi-chip Darlington transistor array manufactured by Fairchild Semiconductor, now onsemi. It integrates two NPN transistors in a SuperSOT-6 surface-mount package. The device provides high current gain for collector currents up to 1.0 A. Key electrical specifications include a maximum collector-emitter voltage of 30V and a continuous collector current of 1.2A. The transition frequency is rated at 1.25MHz with a maximum power dissipation of 700mW. DC current gain reaches 20,000 at 100mA and 5V. The operating junction temperature range spans from -55°C to 150°C.

Feature Summary

• Integrates dual NPN Darlington configurations within a single compact surface-mount package.
• Designed for applications requiring extremely high current gain at significant collector currents.
• Utilizes multi-chip technology to achieve robust performance in a small footprint.

Applications

• High-gain amplifier circuits
• Switching applications requiring substantial current drive
• Interface logic to higher power loads

Procurement Notes

Verify component status carefully as the FMBA14 has been declared obsolete and is no longer manufactured by onsemi. Check datasheet revisions and PCN documents for any marking or specification changes prior to integration. Ensure supply chain sources provide authentic parts with appropriate traceability documentation given the end-of-life status.

Selection Notes

Select this component when high current gain is critical for driving loads up to 1.0A using low input current. The SuperSOT-6 package suits space-constrained designs. Consider the 30V voltage limit and 1.2A current rating against load requirements. Evaluate thermal management needs due to the 700mW power dissipation limit in the small package.

Part Context

The FMBA14 belongs to the family of bipolar transistor arrays produced by Fairchild Semiconductor. It serves as a solution for integrating multiple Darlington pairs into compact electronic systems. The device represents a transition from through-hole to surface-mount technologies while maintaining high-performance analog characteristics typical of Darlington configurations.

Replacement Considerations

As the part is obsolete, identify equivalent NPN Darlington arrays in SuperSOT-6 packages. Verify pinout compatibility and electrical parameters such as Vceo, Ic, and hFE. Consult manufacturer substitution guides for direct replacements or functional equivalents with similar thermal and voltage ratings.