Geeboon TC20A (now TC22) 240W - TC20B 380W - JBC clone

[Hydron]

Has anyone tried V1.21 on TA305/HA310? No changelist with that one sadly

Hello, I have tried.
Noticed in V1.21, they disabled cold soldering iron temperature measurement in shutdown state below 60'C, shows ---'C.
With V1.20 in shutdown state, station measured cold soldering iron temperature (room temperature).

Interesting, checked this before upgrading and mine showed --- rather than temperature on 1.20. Have not found any changes yet in 1.21. Bottom right corner of graph screen has an undocumented "TMP MOD" currently showing "RG" but that was there before the upgrade.

[big t]

Has anyone tried V1.21 on TA305/HA310? No changelist with that one sadly

Hello, I have tried.
Noticed in V1.21, they disabled cold soldering iron temperature measurement in shutdown state below 60'C, shows ---'C.
With V1.20 in shutdown state, station measured cold soldering iron temperature (room temperature).

Interesting, checked this before upgrading and mine showed --- rather than temperature on 1.20. Have not found any changes yet in 1.21. Bottom right corner of graph screen has an undocumented "TMP MOD" currently showing "RG" but that was there before the upgrade.

Sorry, maybe it was showing room temperature in V1.19

[RPuccio]

Alright team, I'm in now. Just ordered a TC22 station with T210 and T245 as a replacement for my Weller WECP-20.
I wanted something faster to heat up and with JBC tips compatibility, the fact that the TC22 is so much smaller is a nice bonus. I would've taken the HC24 if it didn't have a noisy fan, and I also don't really need 400W of power in my work I think. Can't wait to fire it up !

[AndrewGuo from China]

Hello friends, this is Andrew from KELLYSHUN. Thank you for recommending our brand C245 and C210 soldering iron tips. We are currently also providing handles for these soldering iron tips. If you need any, please feel free to contact me by email.

[mzzj]

Alright team, I'm in now. Just ordered a TC22 station with T210 and T245 as a replacement for my Weller WECP-20.
I wanted something faster to heat up and with JBC tips compatibility, the fact that the TC22 is so much smaller is a nice bonus. I would've taken the HC24 if it didn't have a noisy fan, and I also don't really need 400W of power in my work I think. Can't wait to fire it up !

HC24 is completely silent with the latest firmware if you use c210 orc245 tips. Fan runs only on initial heating of c470 tip.

[pizzigri]

I'm a bit fed up with the problems which seem to always increase of my Aixun T3A.
I was looking at the Geeboon tc22 - would you guys that have purchased it recommend it?
Especially for soldering with grounded PCBs and for very sensitive components.
Also. I imagine I cannot reuse the T245 handle I have on the Aixun?

Best,
Franco

[Hydron]

Haven't used my genuine JBC station since I got the Geeboon HA305. It's compatible with genuine T245/T210 handles, I have no idea what connector/pinout Aixun uses but if it's the normal JBC one then it should work.

[RPuccio]

That's good to know ! I still went for the TC22 because it's smaller and I will never need so much power anyway.

I've been pretty happy until now with Geeboon tips. The better stand is really useful : station goes to sleep when you put the iron back, and shuts down power when you touch the metal part dedicated to hot swap tips. That's handy ! It also lets you connect the handle to the stand instead of the station. The handles are really nice and the cable, long and flexible enough. Tip choice is good and they heat pretty fast. I can now solder leadfree without trouble at 380°C instead of the 420°C I had to choose on my previous Weller WECP20 station. Honeymoon phase is real, but I think the station is good enough for my use. I'm just waiting for a few more tips dedicated to desolder (15mm "blade" tip) and 0402 soldereing (C210023 tip).

[minkok]

After some delay, I was able to add a few extra features to my metal stand—enough to feel content for now, with plans to expand further later. The 3D printed files are available in my Dropbox link: https://www.dropbox.com/scl/fo/648h7fstnyvdovj0e7j8q/AOpF4xU689GUtja4dj5NpYo?rlkey=mdfk437en96cyai6mydwmdnqb&st=fa8f4tg5&dl=0. The tip extractor is made from a 20mm x 20mm stainless steel profile—you can drill and cut the desired holes, and even share your ideas if you'd like. Feel free to ask if you have any questions or ideas. Here's what it looks like:

[pizzigri]

Well, I bit the bullet. I don’t like the handle as the tips seem to force into it while the Aixun have just about the same force as a real JBC. Let’s see how it goes….

[minkok]

... I was looking at the Geeboon tc22 - would you guys that have purchased it recommend it?
Especially for soldering with grounded PCBs and for very sensitive components.
Also. I imagine I cannot reuse the T245 handle I have on the Aixun?

It’s a solid choice with a grounded tip and plenty of power to get the job done. Pair it with a switch to avoid constantly swapping tips, and it becomes a really handy tool. For using Auxin tools, just check the sensing pin (I did this a year ago). Open both connectors, find their pinouts, and you’re good to go. Look here:
https://www.dropbox.com/scl/fi/mfpvrczv5kyoslhg616gq/GBN-kit.mp4?rlkey=4fjon7s64agz48qhwg44pok1j&st=3ghfkgjr&dl=0

[minkok]

An additional add-on designed for Wep-Wihua tweezers (it might also support JBC, though I haven't compared—feel free to measure to check the fit), featuring the same 20x20x1 mm stainless steel profile. For the holes, I need some time, please. STLs are included.

[pizzigri]

Pretty happy at this time. Thanks!!

[joechina]

I found a comparison of the geeboon stations for End of 2025
@thm_w can you copy it in the first post, please?

[joechina]

Video from BrANDOM: Geeboon TC22 - Voltage Leak Test and Temp Overshoot Test
Everything looks fine :-)
(from 2025-08-27)

[joechina]

I find final pinout GEEBOON handle in google drive :

@thm_w and @ststefanov13
The first post has also a wiring diagram and the T115 handle is different: A short vs. a  1k resistor. Which one is the right one?   I guess the 1k one.

@ststefanov13
If true this thread has also the diagram without 1k : https://www.eevblog.com/forum/reviews/good-quality-chineese-soldering-station/msg5720331/#msg5720331

[joechina]

@ststefanov13
If true this thread has also the diagram without 1k : https://www.eevblog.com/forum/reviews/good-quality-chineese-soldering-station/msg5720331/#msg5720331

[thm_w]

I don't have a geeboon T115 handle so I'm not sure, I assume that newer diagram is right and it has a 1k ID resistor.

Apparently genuine NT115 has no resistor: https://lajtronix.eu/wp-content/uploads/2024/02/JBC_NT115A_AN115A_Pinout.png

So I'm not sure what would happen if you connected a genuine T115 handle to the geeboon, if it would smoke the tip or not.

[Hydron]

I think the genuine NT115 has a totally different connector? So not much risk of being able to smoke it!

[ststefanov13]

@ststefanov13
If true this thread has also the diagram without 1k : https://www.eevblog.com/forum/reviews/good-quality-chineese-soldering-station/msg5720331/#msg5720331

See post https://www.eevblog.com/forum/reviews/geeboon-tc20a-240w-tc20b-380w-jbc-clone/msg5895032/#msg5895032

http://www.geeboon.com/page110?product_id=68

Product Information https://drive.google.com/drive/folders/1SwbyB3bcFrNMGOF1WSqRP2o7aefq-gPY?usp=drive_link

TA305........png

Use google objective and translate from chinese

[joechina]

Yes, NT115 has five pins and the Geeboon TC22 family uses six pins

[ststefanov13]

Yes, NT115 has five pins (Attachment Link)

The connector for the nt115 is completely different from the Hirose one.

https://www.aliexpress.com/item/1005005894421782.html?spm=a2g0o.cart.0.0.371d38daeZcEx7&mp=1&pdp_npi=5%40dis%21BGN%21BGN%205.33%21BGN%205.33%21%21BGN%205.33%21%21%21%402103847817648760813347280e42a3%2112000034746029880%21ct%21BG%212030685502%21%211%210

HC24 and TC22 tested and work with t12(hakko t15 for europe ),c115,c210,245 and !!!!!! c120 (jbc AM120) two cartridges in parallel , HC24 + c470,
Diagram of last cartridges  connection is Geeboon web site and google drive.

Low cost variant for AM120 is handle from Sunshine S1.

https://www.aliexpress.com/item/1005007911705869.html?spm=a2g0o.order_list.order_list_main.24.58031802rcSoMT

One of my Geeboon TC24 + Sunshine S1 handle, has been modified to work with a foot switch. When the foot switch  is pressed it heats up to operating temperature, when it is not pressed the foot switch goes into shutdown.

See pin 4.

It is very convenient to work with SMDs without overheating them.

[electron_accelerator]

One of my Geeboon TC24 + Sunshine S1 handle, has been modified to work with a foot switch. When the foot switch  is pressed it heats up to operating temperature, when it is not pressed the foot switch goes into shutdown.

So you connected both heaters of the C210 S1 tweezer in parallel? How did you change the ID resistor between pin 5 and 6? Did you keep the short or did you remove it so that the station assumes it is a C245 for more power?

[ststefanov13]

Pinout for c120 is identical with c210. short between 5 and 6 pin. The station sees the tweezers as c210.

The c120 cartridges are left and right side, but essentially it is a c210 cartridge.

You need to choose the cartridges as close as possible to the operating temperature (use soldering thermometer) , and to reduce the target power a little, the resistance still becomes half as much, and the current is 2 times greater.

The station measures the current (voltage drop across the shunt) , knowing the power and voltage, and limits the power using PWM modulation (TC22 and HC24). Аnd based on this it calculates the resistance of the heater.

It is not recommended to use the c210 and c120 on the same station, so as not to have to constantly adjust the target power by changing the handles.

The problem is that in the thermocouple  c115, c210 and c120 the seebeck coefficient (uV/C) is much steeper than c245,c470 and t12 and separately the cartridges are much less thermally inert due to their smaller mass, the station has to correct the current power much faster.

It should take more measurements of the current temperature per second, perform filtration, and adjust the current power supplied to the heater.

For this purpose, not one but 2 or 3 separate ADCs with DMA in the microcontroller (MCU) are used.