FNIRSI DSO-TC3 3 in 1 handheld digital oscilloscope transistor tester


FNIRSI DSO-TC3 3 in 1 handheld digital oscilloscope transistor tester
1 pcs $ 54

MOQ: 1 pcs Weight: 0.5 KG

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Product description:

FNIRSI DSO-TC3 Oscilloscope 3-in-1 Handheld Oscilloscope &  Signal Generator & Transistor Tester

FNIRSI DSO-TC3 tester skillfully integrates digital oscilloscope, electronic component tester, signal generator, on-off test, voltage measurement, temperature and humidity measurement, infrared decoding, and other functions into one, equipped with 2.4-inch color dot matrix TFT the display screen, built-in rechargeable lithium battery, brings users more and more vital practical functions with a small size, and has good portability at the same time.

FNIRSI DSO-TC3 3 in 1 tester 

Product supporting list:

DSO-TC3 tester*1


P6100 high voltage probe*1

Type-C charging cable*1

Test hook*3

Ordinary probe*1

FNIRSI DSO-TC3 3 in 1 handheld digital oscilloscope transistor tester port

FNIRSI DSO-TC3 3 in 1 handheld digital oscilloscope transistor tester button port description:

① Return key

② Menu/OK key

③ Left key

④ Up key

⑤ Down key

⑥ Right key

⑦ IN(0-40V)



Product specifications and parameters:

The main parameters of the whole machine:

Product number


Display screen

2.4 inch TFT color screen, LED backlight

Supply voltage

Built-in 1500mAh rechargeable lithium battery

Charging specifications

USB Type-c, +5V

Product volume


Bracket specifications

All-in-one foldable stand

Horizontal time base range


Trigger mode

Auto; Normal; Single

Trigger type

Rising edge / falling edge

Waveform Freeze


Automatic measurement


Toolbox function introduction:

Automatically analyze NEC protocol infrared code

Other function modes: including circuit continuity test, 0~40V input voltage measurement, DS18B20 temperature sensor measurement, DHT11 temperature and humidity sensor measurement, etc.

FNIRSI DSO-TC3 digital oscilloscope transistor tester size

Digital oscilloscope mode parameters:

Real-time sample rate


Analog Bandwidth


input resistance


Coupling method


Test voltage range

1:1 Probe: 80Vpp(±40V)

10:1 Probe: 800Vpp(±400V)

Vertical sensitivity


Oscilloscope function introduction:

Real-time sampling rate 10MS/s, bandwidth 500Khz;

Maximum measurement of 400V voltage signal;

With complete trigger function (automatic, single, regular);

Equipped with an efficient one-button AUTO. It can display the measured waveform without complicated adjustments.

FNIRSI DSO-TC3 digital oscilloscope transistor tester for sale

Component test mode parameters:





β is greater than 10 and less than 600

Amplification hfe, base-emitter voltage Ube, lc/le, collector-emitter reverse cut-off current lceo, lces, protection diode forward voltage drop Uf


Forward voltage drop <4.5V

Forward Voltage Drop, Junction Capacitance, Reverse Leakage Current

Zener diode



(1-2-3 test areas) forward voltage drop, the reverse breakdown voltage

(K-A-A test area) reverse breakdown voltage





Gate capacitance Cg, drain current ld under Vgs, protection diode forward voltage drop Uf

Drain current ld under Vgs, protection diode forward voltage drop Uf

Turn-on voltage Vt, gate capacitance Cg, drain-source resistance Rds, protection diode positive

Pressure drop Uf

One-way thyristor


Turn on voltage <5V, gate

Trigger current<6mA

Gate voltage



Capacitance value, loss coefficient Vloss






Inductance value, DC resistance



Voltage value, positive and negative polarity

Input voltage


Voltage value







Infrared remote control decoding

NEC protocol infrared code

Display user code and data code, and display the corresponding infrared waveform

Function introduction of transistor tester:

Automatically identify and measure various transistors, including NPN and PNP transistors, N-channel and P-channel field effect transistors, junction field effect transistors, diodes, dual diode thyristors, etc., and passive devices such as resistors, inductors, and capacitors.

Automatic detection of pin definitions.

FNIRSI DSO-TC3 3 in 1 tester application

Signal transmitter parameters:

Sine wave


Square wave


Pulse wave


Triangle wave


The slope




Signal generator function introduction:

6 signal waveforms: sine wave, square wave, pulse wave, triangle wave, ramp, DC

Output frequency adjustable 1-100KHz

Adjustable output voltage 3.3V

Output duty cycle adjustable 0-100%

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Our Customers and Partners:

We treat our customers and partners as sincere friends and do our best to provide technical support and aftersales service.
Payment method:

How to determine product prices and shipping costs?

When you are ready to buy one or more products. You can consult the sales Manager to get a sample of the proforma invoice. The category, product price, and freight are included.

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We have the following payment methods. You can tell our sales Manager which payment you prefer and complete it. After the customer service checks and confirms the payment is completed. Provide the proforma invoice. And we will prepare to ship.

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Q: When will we ship after payment?
A: In order to ensure that the products we ship are in good condition. Issued approximately 1-2 days after receiving your payment.

Q: What if the product is damaged during transportation?
A: We will use a more robust package when shipping to avoid damage to the goods, and we can purchase transportation insurance in advance to reduce the loss of in the transport. although this problem is not common.

Q: What payment methods do we support?
A: We support bank transfer, wire transfer, BTC, third-party guarantee and Paypal.

Q: What should I do if there is a problem after receiving the products?
A: We have established good relationships with maintenance departments in many countries/regions in the world. For example, Venezuela, Iran, etc. If you have any questions within 3 days after receiving the goods, you can apply for after-sales service on the "My Order" page.

Q: Which express we support?
A: We will choose the cheapest and fastest transportation method for you. And we support DHL, UPS, TNT, Fedex, BRE, and also have express delivery services, such as Russia, the United States, Kuwait, etc.

More FAQs

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de Wykerslooth 2024/3/27 1:25:38
Q:Hello, I live in France and I#39ve just received two ASIC noise silencers. Could you please tell me how to connect them to our outlets 230V 50Hz
A:Hello, please contact the after-sales technical support on WhatsApp +8619123969124 to get help.
Andrew 2024/3/24 23:16:35
Q:I have an IceRiver KS3M and was wondering if your $200 silencer boxes crypto miner silencer with wifi version is fitted for this model or if the $64 enlarged fan iceriver silencer is the only one for the KS3M.
A:Hello, these silencers can be adapted to the IceRiver KS3M. Please contact WhatsApp +8618623251355 for details.
Yram Soto 2024/3/22 0:09:27
Q:Can i put the Lianli ASIC water cooling row 8KW outside of the house
A:Hello, water-cooled radiators can be placed outside the house as long as safety is ensured. Before doing this, please protect it from moisture, dust, impact, etc.
Chris 2024/3/20 1:02:07
Q:I have a antminer s19 pro, I would like to have instructions on where I solder the red wire to make the 9003IB MOS chip Integrated board work. I can seem to find any specific information on your website for this application. Please help
A:You need to solder the red wire to the negative terminal of the Zener diode on the back of the original TPHR9003NL MOS chip. Here is a sample image:
you can view the installation demonstration video of 9003IB:
GW Gregory 2024/3/19 4:55:45
Q:Antminer APW12 4800W power supply
Could you let me know when this PSU is available Thanks
A:Hello, if this product is in stock, we will contact you in time.
If you need Antminer S21 power supply, please view APW17 1215a and contact sales on WhatsApp +8618623251355 to get a quote.
Mr. Johnson 2024/3/19 3:51:46
Q:You do not have a complete KS3, KS3M kit. Please give me a list of items I need for a complete water cooling system. I would like to place an order as soon as possible.

Thank you
A:Hello, this is the water cooling kit for IceRiver KS3M KS3L, please check it out.
Please contact the sales manager on WhatsApp +8618623251355 to ask for more details about the radiator and water cooling plate.
Oscar 2024/3/17 1:05:27
Q:Hello, do you have water cooling for
S19K PRO 110TH
thank you
A:Hello, Zeus Mining supports customized water cooling systems. Please contact sales on WhatsApp +8618623251355 or email [email protected] for more information and details.
Petr Kaška 2024/3/15 14:38:21
Q:Hello, I am interested in your water cooling product, I have antminer s19j pro, are there different versions of this product How do I know them Another question is how much liquid do I need as a refill, as you recommend, I will also buy it from you. Will there be a problem with shipping to the Czech Republic Thank you for answer. Kaska
A:Hello, S19j pro hash board is divided into resin board and aluminum substrate, and the hash rate is also different.
To ensure accuracy, you can carefully open the S19jpro and pull out the hash board, check the hash board version printed on the surface, such as BHB42631, and send the version number to the sales manager on WhatsApp +8618623251355 to communicate the details.
Here is an example image of hash board version https://www.zeusbtc.com/Upload/image/202403/17101378731438047.jpg
Jim 2024/3/12 14:00:41
Q:Looking for either Hashboard repair or a new hashboard form my BM-K3 KDA 70Th miner

A:Hi Jim, you can contact our sales staff via WhatsApp (+8618623251355) and email ([email protected]) to obtain the latest product quotations. Thank you for your attention.
Matthew 2024/3/10 23:32:48
Q:I have 2 goldshell miners not working. I tried to troubleshoot but with no success. Can you help me repair them Is there a USA branch of your company I am on the East Coast. Let me know the process, thank you,
A:Hello, we do not provide repair services. You can find repair centers in the USA here https://www.zeusbtc.com/RepairCenter/USA/
Please note that we only provide information, please be careful to distinguish the authenticity. ZEUS MINING does not assume any responsibility for the repair center. Thank you for your attention.









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