How to Test SMD NPN Transistor in Circuit | Easy Multimeter Method

Описание: How to Test smd marking code "ALY" SMD NPN Transistor in Circuit | Easy Multimeter Method #shorts How to test #SMD #Transistor in circuit #haseebelectronics. SMD transistor part number, pinout, size code, package code, voltage, current and how to check in circuit. smd marking code ALY is dedicated for KTC3875-Y in SOT-23 package size code, equivalent pzckage sizes are, SC-59, TO-236AB, SMT-3, CPH3
SMD marking - part number hfe Gain
ALO KTC3875-O 70-140
ALY KTC3875-Y 120-240
ALG KTC3875-G 200-400
ALL KTC3875-L 350-700
Learn how to test an SMD transistor directly in circuit using a digital multimeter. This quick tutorial explains step-by-step how to check if an SMD NPN or PNP transistor is working without removing it from the PCB. Perfect for electronics beginners, repair technicians, and hobbyists who work with mobile phones, routers, and other electronic boards.

🔹 Simple in-circuit testing method
🔹 Works with most SOT-23, SOT-223, and other SMD packages
🔹 Quick way to detect faulty transistors

📘 DOWNLOAD EIA96 / EIA-96 / E96 SMD resistor code chart (helpful for SMD repairs):
https://drive.google.com/file/d/1rC8f...

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