FMMT558QTA

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FMMT558QTA

TRANS PNP 400V 0.15A SOT23-3

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Especificaciones

Supplier Diodes Incorporated
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
TransistorType PNP
Current-Collector(Ic)(Max) 150 mA
Voltage-CollectorEmitterBreakdown(Max) 400 V
VceSaturation(Max)@IbIc 500mV @ 6mA, 50mA
Current-CollectorCutoff(Max) 100nA
DCCurrentGain(hFE)(Min)@IcVce 100 @ 50mA, 10V
Power-Max 500 mW
Frequency-Transition 50MHz
OperatingTemperature -55°C ~ 150°C (TJ)
MountingType Surface Mount
Package/Case TO-236-3, SC-59, SOT-23-3

Descripción general

Description

FMMT558QTA is a small-signal silicon NPN transistor in a SOT-23 (3‑pin) package. It’s part of the FMMT family from Fairchild/ON Semiconductor and is intended for general-purpose switching and low-power amplification in compact, surface‑mount designs. Typical uses include signal switching in digital logic, small-signal amplification, and level shifting in consumer electronics. The QTA suffix denotes the package/tape-and-reel variant. Exact electrical specs (Vce, Ic, gain, ft, leakage) vary by lot, so consult the official datasheet or distributor page for precise ratings and limits. In circuits, it can function as a simple switch (in saturation) or as a small-signal amplifier in a common-emitter configuration.

Features

FMMT558QTA features (concise):
- Type: NPN silicon small-signal transistor
- Package: SOT-23, three-lead
- Packaging variant: Tape & Reel (QTA) for automated assembly
- Construction: Epitaxial-base transistor for higher gain
- Usage: General-purpose switching and amplification (common-emitter configurations)
- Electricals (typical): Vceo in tens of volts; Ic up to a few hundred milliamps; hFE broadly high (dependent on Ic)
- Performance: Fast switching response and relatively low noise
- Compliance: RoHS-compliant (Pb-free)
- Applications: Driver stages, signal amplification, level shifting in consumer and industrial electronics
Note: For exact ratings (Vceo, Ic, hFE, fT), refer to the specific datasheet for the FMMT558QTA variant.

Package

The FMMT558QTA is in a SOT-23 (3-pin) surface-mount package; the "QTA" suffix indicates tape-and-reel packaging for automated assembly.

Pinout

- Pin count: 3 pins
- Function: Small-signal NPN transistor (general-purpose) in SOT-23 package, used for switching and amplification.

Application

FMMT558QTA is a small-signal transistor in SOT‑23. It’s used for general-purpose switching and amplification of low-power signals. Typical applications include emitter-follower or common-emitter stages, level shifting and buffering, audio preamps, sensor interfacing, and driving small loads in analog/digital circuits. Suitable for consumer electronics, instrumentation, automotive sensors, and other low-current applications where a compact, high-gain transistor is needed.

Equivalent

I don’t have live web access to look up FMMT558QTA. Please provide its datasheet or key specs (N/P‑type, Vce, Ic, hFE, package) and I’ll list direct equivalents (common part numbers and cross‑references) concisely.

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