FNIRSI DSO-TC4 3-in-1 Transistor Tester Oscilloscope Signal Generator 10MHz 48MSa/s 2.8" TFT for Electronic Repair DIY Tool
SPECIFICATIONS
Band Width: Less than 60MHz
Battery: Built-in 3.7V / 1500mAh Rechargeable Lithium Battery
Battery Included: no
Brand Name: NONE
Choice: yes
DIY Supplies: Electrical
Digital Channels: 1
Dimensions: 90 x 142 x 27.5 mm
High-concerned chemical: none
Model Number: T9-DSO-TC4
Origin: Mainland China
Power Supply/Charging: TYPE-C (5V/1A)
Real Time Sampling Rate: 48MSa/s
Screen: 2.8-inch TFT Color Screen (Brightness Adjustable)
Semi-finishedproduct: No
System Languages: English, Chinese, German, Portuguese, Japanese, Spanish, Russian
Weight: 186g
semi_Choice: yes
FNIRSI DSO-TC4 3-in-1 Transistor Tester Oscilloscope Signal Generator 10MHz 48MSa/s 2.8" TFT for Electronic Repair DIY Tool

Oscilloscope Specifications
Real-Time Sampling Rate: 48MSa/s
Analog Bandwidth: 10MHz
Input Impedance: 1MΩ
Coupling Mode: AC / DC
Test Voltage Range: ±40V (1:1 Probe) / ±400V (10:1 Probe)
Vertical Sensitivity: 10mV/div ~ 10V/div (X1 range)
Time Base Range: 50ns ~ 20s
Trigger Mode: Auto / Normal / Single
Trigger Type: Rising edge, Falling edge
Automatic Measurement: Max, Min, Avg, RMS, Vpp, Frequency, Cycle, Duty Cycle
Waveform Freeze: Yes (HOLD function)
Transistor Tester Specifications
Capacitance: 25pF ~ 1000μF (Displays Capacitance value, Loss factor Vloss)
Resistance: 0.01Ω ~ 50MΩ
Inductance: 10μH ~ 1000μH (Displays Inductance value, DC resistance)
Zener Diode: 0.01 ~ 4.5V
Other Component Tests: Transistor (hfe, Ube, Iceo, etc.), Field-Effect Transistor (JFET, IGBT, MOSFET), Diode, SCR (Unidirectional & Bidirectional)
Sensor Tests: DS18B20 (Temperature), DHT11 (Temp & Humidity)
Infrared Decoding: NEC protocol IR code auto-parsing
Signal Generator Specifications
Output Waveform: Supports 13 waveform outputs
Waveform Frequency: 0 ~ 50KHz
Waveform Amplitude: 0.1V ~ 3.0V
Square Wave Duty Cycle: 0 ~ 100%

1. [Ultimate 3-in-1 Versatility]
Why carry multiple heavy devices? The DSO-TC4 seamlessly integrates a 10MHz Oscilloscope, a highly efficient Transistor Tester, and a 50KHz Signal Generator into one compact, lightweight tool. It perfectly meets all your electronic development and repair needs.
2. [High-Performance Oscilloscope]
Equipped with a real-time sampling rate of 48MSa/s and a 10MHz analog bandwidth. It supports Auto, Normal, and Single trigger modes. With a 10X probe, it can safely measure voltages up to 800Vpp (±400V) to prevent accidental device burnout.
3. [Smart Component Identifier]
Effortlessly test various semiconductors! It automatically identifies the type and pin arrangement of Transistors, Diodes, Capacitors, Resistors, and MOSFETs. It even features a built-in Infrared Decoder and supports DS18B20 / DHT11 sensor testing.
4. [13-Waveform Signal Generator]
Features a built-in DDS signal generator capable of outputting 13 different types of waveforms. You can freely adjust the output frequency (0-50KHz), amplitude (0.1V-3.0V), and square wave duty cycle (0-100%) to adapt to any circuit debugging scenario.
5. [2.8" TFT Screen & Long Battery Life]
Designed with a crisp 2.8-inch TFT color screen. It is powered by a built-in 1500mAh rechargeable lithium battery for long standby times. It also supports USB Type-C charging, waveform screenshot saving, and PC connection for firmware upgrades and data sharing.





- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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