BFS17A,215

Overview

The BFS17A,215 is a small-signal NPN bipolar junction transistor manufactured by NXP USA Inc. It utilizes the SOT-323 (SC-70) surface-mount package, designed for compact electronic circuits. The device features a maximum collector-emitter voltage of 45 V and a collector current rating of 100 mA. Key electrical parameters include a DC current gain (hFE) ranging from 160 to 320 at a collector current of 2 mA, and a transition frequency (fT) of 250 MHz at 100 mA. The component operates within a junction temperature range of -55°C to +150°C and is housed in a lead-free, halogen-free RoHS-compliant plastic case.

Feature Summary

• High current gain capability suitable for low-noise amplification applications
• Compact SC-70 surface-mount package optimized for space-constrained designs
• Wide operating temperature range supporting industrial and commercial environments

Applications

• General-purpose switching and amplification in consumer electronics
• Driver stages for audio and RF signal processing
• Logic interface circuits requiring high gain

Procurement Notes

Verify the specific tape-and-reel quantity and packaging configuration directly with authorized distributors or NXP sales representatives prior to ordering. Confirm that the requested batch meets current environmental compliance standards, including RoHS and REACH directives, as manufacturing processes may evolve. Ensure the part number suffix matches the required reel size for automated assembly lines.

Selection Notes

Select this component when a small-form-factor NPN transistor with moderate voltage handling and high current gain is required. Compare the SOT-323 footprint against alternative packages if board space permits other options. Evaluate the thermal dissipation requirements against the package's power handling capabilities to ensure reliable operation under continuous load conditions without exceeding the maximum junction temperature limits.

Part Context

The BFS17A belongs to NXP's portfolio of general-purpose small-signal transistors. It serves as a replacement for legacy components in existing designs requiring miniaturization. The device complements PNP counterparts like the BFS18A in complementary push-pull configurations. Its specifications align with standard industry requirements for low-power analog and digital switching applications across various electronic product categories.

Replacement Considerations

Direct pin-compatible substitutes include the BC847 series or BFR92A, provided the voltage and current ratings meet the circuit requirements. Verify that any alternative device maintains the same SOT-323 footprint and electrical characteristics, particularly hFE ranges and fT, to ensure functional equivalence without redesigning the PCB layout.