2SA1943 || How to Check 2SA1943 TRANSISTOR with Multimeter in Hindi || TRANSISTOR 2SA1943 TESTING 🆕

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2SA1943 TRANSISTOR
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How to check 2sa1943 transistor with multimeter
How to check 2sa1943 transistor using multimeter
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The 2SA1943 is a high-power PNP bipolar junction transistor (BJT), commonly used in audio amplifier circuits.


Key Specifications:

Type: PNP Power Transistor

Voltage (Vce): -230V

Current (Ic): -15A

Power Dissipation (Pc): 150W

Gain (hFE): 55 to 160

Frequency (ft): 30 MHz


Applications:

Audio power amplifiers

High-power audio output stages

Inverter circuits

General-purpose high-power switching


Complementary Pair:

The 2SA1943 is often paired with 2SC5200, its NPN counterpart, to form a complementary push-pull amplifier circuit.


Pinout (Front View):

1. Base (B)


2. Collector (C)


3. Emitter (E)



How to Test 2SA1943 Transistor:

Tools Needed:

Digital multimeter (with diode test mode)


Testing Procedure:

1. Identify the Pins – Refer to the datasheet to confirm the pinout (B, C, E).


2. Diode Test (Base to Emitter/Collector):

Place the positive probe on the Base (B) and the negative on the Emitter (E) – a reading between 0.5V to 0.7V indicates a good junction.

Repeat with the negative probe on the Collector (C) – similar reading confirms a healthy junction.



3. Reverse Test (E/B and C/B):

Place the negative probe on the Base and the positive on the Emitter or Collector – no reading should occur.



4. Check for Shorts:

Place probes between the Collector and Emitter. No continuity should be present.




Common Fault Symptoms:

Open Circuit: No readings in both forward and reverse directions.

Short Circuit: Continuity between any two pins (C-E, B-E, B-C).

Leakage: Small voltage reading in reverse test.














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