FNIRSI DSO-TC4/DSO-TC3 Digital Oscilloscope Transistor Tester 10MHz 48Ms/s Electronic Component Measurement Tool W/ USB Charger
SPECIFICATIONS
AC Voltage: 3V
Battery Included: Yes
Brand Name: FNIRSI
DC Voltage: 3V
DIY Supplies: Electrical
Display Type: Digital Display
High-concerned chemical: none
Languages: Chinese, English, German, Portuguese, Japanese, Spanish, Korean, Russian
Model Number: DSO-TC4
Operating Mode: Auto Range
Origin: Mainland China
Semi-finishedproduct: No
Product Description:
DSO-TC4 is a multifunctional transistor oscilloscope launched by FNIRSI, which is comprehensive and practical, and is designed for the maintenance and R&D industries. It integrates an oscilloscope, a signal generator, and a transistor.
The main features of the product are:
Oscilloscope functions:
• Sampling rate: 48MSa/s
• Analog bandwidth: 10MHz
• Voltage protection: ±400V
• Waveform storage: supports screenshot saving and viewing, which is convenient for data
analysis
Signal generator function:
• Supports 13 waveform outputs, frequency range 0-50KHz, output voltage adjustable 0-3v.
• Output parameters (frequency, amplitude, duty cycle) are adjustable, flexible to meet
various needs
Transistor function:
• High efficiency: Automatically identify the type and pin arrangement of the tested
component, simplify the operation process, and improve test efficiency
• Diverse categories: Detect and analyze the performance and characteristics of
semiconductor components such as transistors, diodes, triodes, field effect (FET), etc.
Portable design:
• Equipped with a 2.8-inch TFT color screen, the picture is clear and intuitive
• Built-in high-capacity rechargeable lithium battery (1500mAh), standby time 4 hours
• Small and light, suitable for mobile use.
FNIRSI-DSO-TC4 is committed to providing users with powerful, flexible functions and portable operation experience, and is an ideal tool for maintenance and R&D work.
Product Parameters:
3.1 Oscilloscope Parameters
Real-Time Sampling Rate:48MSa/s
Analog Bandwidth:10MHz
Input Impedance:1MΩ
Coupling Mode:AC/DC
Test Voltage Range:1:1 Probe: 80Vpp (+40V)
10:1 Probe: 800Vpp (+400V)
Vertical Sensitivity:10mV/div~10V/div (X1 range)
Vertical Displacement:Adjustable with indication
Time Base Range:50ns~20s
Trigger Mode:Auto/Normal/Single
Trigger Type:Rising edge, Falling edge
Trigger Level:Adjustable with indication
Waveform Freeze:Yes (HOLD function)
Automatic Measurement:Max, Min, Avg, RMS, Vpp, Frequency, Cycle, Duty Cycle
3.2 Componet Tester Parameters
Transistor Test:Support
Diode Test:Forward voltage drop <5V
Zener Diode Test:0.01~4.5V
Field-Effect Transistor (FET) Test:JFET, IGBT, MIOSTET
Unidirectional SCR Test:Trigger voltage <5V, Gate level
Bidirectional SCR Test:Trigger current <6mA
Capacitor Test:25pF~1000μF
Resistor Test:0.01Ω~50MΩ
Inductor Test:10μH~1000μH
DS18B20 Test:Support
DHT11 Test:Support
3.3 Signal Generator Parameters
Output WaveformSupports 13 waveform outputs
Waveform Frequency0-50KHz
Square Wave Duty Cycle0-100%
Waveform Amplitude0.1V-3.0V
3.4 Basic Parameters
Model:DSO-TC4
Languages:中文、English、Deutsch、Português、にほんご、Español、한국인、Pyccкий
Screen:2.8-inch TFT Color Screen
Backlight:Brightness Adjustable
Power Supply:TYPE-C(5V/1A)
Battery:3.7V/1500mAh
Size:≈90x142x27.5mm
Product Weight:≈186g
Packing List:
DSO-TC4 Host *1
Test Hook *3
P6100 Probe *1
Alligator Clip Probe *1
USB Type-C *1
User Manual *1
Package Box *1
















FNIRSI DSO-TC3
FNIRSI DSO-TC3 is an upgraded version of DSO-TC2. On the basis of DSO-TC2, it has upgraded capacitance ESR detection, function signal source output, Electronic measuring instrument bandwidth and sampling rate improvement, input voltage and diode detection range increase and so on. The improvement in performance and function of DSO-TC3 makes the device more stable and accurate in the detection process.
Product Description:
Digital Oscillos
Real-time sample rate:10MSa/s
Analog Bandwidth:500Khz
Input resistance:1MΩ
Coupling method:AC/DC
Test voltage range:400V
Vertical Sensitivity (x1):10mV-10V
Horizontal time base range:1us-10s
Trigger mode:Auto / Normal / Single
Trigger type:Rising edge / Falling edge
Waveform Freeze:Yes
Automatic measurement:Yes
Transistor tester
Triodes:β is greater than 10 and less than 600
Diodes:Forward voltage drop <4.5V
Reglulated diode:0.01~32V
MOSFET:JFET,IGBT,MOSFET
SCRs:Turn-on voltage <5V, gate Pole trigger current <6mA
TRIAC:Turn-on voltage <5V, gate Pole trigger current <6mA
Capacitor:25pF~100mF
Resistor:0.01Ω~50MΩ
Inductor:10uH~1000mH
Battery:0.1~4.5V
Input voltage:0~40V
DS18B20:0-85℃
DHT11:0-60℃/5-95%
Infrared remote decoding:NEC protocol infrared cod
NOTE:
①Ices, Iceo, Uf are only displayed when they are valid.
② Junction capacitance and reverse leakage current are only displayed when they are valid.
③The turn-on or turn-off voltage of the FET must be less than 5V.
④ Displayed only when there is a protection of diode.
⑤Vloss is only displayed when it is valid.
⑥Two-legged components and measure the inductance when the resistance is less than 2.1kΩ.
Signal Source
sine wavel:1-100KHz/0-3.3V/50%
Square wave:1-100KHz/3.3V/50%
Pulse wave:1-100KHz/3.3V/0-100%
Triangle wave:1-100KHz/0-3.3V/50%
Ramp:1-100KHz/0-3.3V/0-100%
DC:0-3.3V
Packing List:
DSO-TC3 *1
P6100 High Voltage Probe*1
Ordinary probe*1
Test hook*3
Adapter*1
Type-C charging cable*1
Packing box*1
Manual*1


























- 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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