BF545C,215

Overview

The BF545C,215 is an N-channel symmetrical silicon junction field-effect transistor housed in a SOT23 plastic surface-mounted package. It features a drain-source voltage rating of ±30 V and a total power dissipation of 250 mW at 25 °C ambient temperature. The device exhibits a gate-source cut-off voltage range of -3.2 V to -7.8 V and a drain current capability between 12 mA and 25 mA under standard test conditions. Forward transfer admittance is specified from 3 mS to 6.5 mS.

Feature Summary

• Low leakage level with typical values around 500 fA
• High gain characteristics suitable for amplification
• Symmetrical structure allowing flexible circuit integration

Applications

• Impedance converters for electret microphones
• Impedance converters for infra-red detectors
• VHF amplifiers in oscillators
• VHF amplifiers in mixers

Procurement Notes

Verify the specific ordering suffix matches the required manufacturing origin code (P, T, or W) as indicated by the marking table. Confirm that the component status aligns with current production availability through official NXP channels before finalizing design-in decisions.

Selection Notes

Select this variant when a higher gate-source cut-off voltage and drain current are required compared to the BF545A or BF545B models. Ensure the application operates within the absolute maximum ratings, particularly regarding thermal resistance and junction temperature limits during high-frequency operation.

Part Context

This component belongs to the BF545 family of N-channel silicon JFETs manufactured by NXP Semiconductors. The family includes variants A, B, and C, differentiated primarily by their gate-source cut-off voltage and drain current specifications while sharing the same SOT23 package and general electrical characteristics.

Replacement Considerations

BF545A,215; BF545B,215

FAQ

What is the pin configuration for the BF545C?

Pin 1 is the source, Pin 2 is the drain, and Pin 3 is the gate.

How does the BF545C differ from the BF545A?

The BF545C has a higher gate-source cut-off voltage range (-3.2 V to -7.8 V) and higher drain current (12 mA to 25 mA) compared to the BF545A (-0.4 V to -2.2 V and 2 mA to 6.5 mA).

Is the BF545C automotive qualified?

No, unless expressly stated in the data sheet, this product is not suitable for automotive use and is not qualified according to automotive testing requirements.