JBC Soldering Cartridges Pinouts


I want to summarize all info about JBC Cartridges Pinouts.

Let’s start from JBC C105, C210, C245 and C470 series.

I have all of them so it’s simple=)

Firstly Resistance:

I will make several measurements for resistance and “temperature”.

For “temperature” measurements will apply external heat to Cartridge and check the resulting “Temperature” shown by DMM. Tc of each soldering cartridge is different from standart DMM K type thermocouple so “temperature” will only show that we have right polarity and votage and DMM clamps connected to correct pins.

If two pins show “ambient” temperature – it means that this two pins do not have thermocouple between them(so in our case – they are connected together, or goes to Heater).

Fluke short Circuit  for Reference.

C105 series cartridge pinout:

C210 series cartridge pinout:

C245 series cartridge pinout:

For C245, C470 Fluke precision is  not good enogth so i will use Keithley 2010 with 4w circuit to measure low Ohm reistance of heater, thermocouple(at ambient temperature) and heater + thermocouple in series.

C470 series cartridge pinout:

There are lots of incorrect pinouts  on the web, but i try to make it clear and provide measurement photos for it.


p.s old twizers series C420  pinout can be found in this article:


JBC TE-TA hot air companion for my Quick 856AE

Purchased JBC TE-TB handle from amazon.it for very low price.

Firstly received TE-A handle without heater and finally after long negotiations with the seller – received TE-TA (TE-A with Heater) =)

TE-TB and TE-TA both have 300w heating element but TE-TA have larger handle diameter. TE-TA is an older version.

In any case TE-TB and TE-TA handles both have very small size and can be used for precision hot air soldering.

Before it i have several china-made hot air tools Lukey 868, Quick .. Quick 856AE. Now i’m using only 1200w 856AE and like to have smaller one.

Here you can see comparison of two handles of quick 856AE and TE-TA. I’ve placed them aligned to the grip place:

2020 Feb 18 update:

Just received quality brushless blower from Aliexpress:

Works well but speed control resolution is poor, so will make custom motor control circuit. I do not need 240 L per minute blow.


Custom control unit WIP… will post addition info later.


JBC HT420-A Teardown


I’ve bought several JBC tools and will start to describe all features of them here.  Also will post some info how to use them without original control units.  Thank you for your support! Let’s start with HT420-A how twizers. This one was bought used  on ebay for about 60USD shipped from UK to Russia with set of two C420-271 cartridges !!

Teardown is a teardown! Disassemble expensive connector Binder 99-0617-00-06 connector and cutting the wires:

JBC uses good cable: flexible wires with silver coating and PTFE insulation covered with black silicone shell. HT420-A has  tool identification resistor inside  between 1  and 6 pins, it’s 330 Ohm 5%:


Wiring of the HT420-A is following:

You can see that HT420 have very interesting connection with cartridges made of meatal with silver coating. Very large contact area between heater pins helps to achive minimum contact resistance. Pinout of C420-271:

Need to say that firstly i want to buy HT470-A twizers. I do not plan to use them with original control units because of they are very expensive and take lots of space on a working place. Just take a look at original set: HDE Tweezer Station

After several attempts to get HT470-A for reasonable price i start to think about DIY twizers assembly based on C470 cartridges. But also found following photos on JBC website:

Look very similar isn’t it? =) Currently i’m waiting for thick 6 cores silicone wire and plan to re-assemble HT420-A with it – to get full perfomance of C470 irons with it=) Thank you for reading…


DR560-A is an excellent JBC desoldeing iron.


If you plan to use it – better to buy complete set from JBC.

Standard pack includes following:

If you will buy used set on ebay – whether it will be full?

I’ve bought mine from weidinger.

Excellent work was made by Sebastian Liebhart

He found that DR560-A have quite the same type of heat element than used in JBC C245 series.

He made good job and connect DR560-A to low cost JBC  CD-2BE.

You can get all info on his page, i will only post his pinout (thank you for it Sebastian)

You can see that DR560-A also have ID resistor inside on the same pins as HT420-A

Repair defective JBC C210 typ with new ERSA typ.

C210 trics

I had used Ersa Minityp S (0015BDH040) 12V 6W iron for several years for QFN soldering.

Now i’m using JBC tools but the perfect shape of the Ersa 0012BD is something what i want to have with the power of JBC C210 series cartridges. So i decided to make the crossbreeding procedure =)))

Got one old C210 cartridge from local flea market. On this photo you can see JBC C210 cartridge, ERSA Minityp iron and ERSA Minor iron.

This C210 is unusable because of typ corrosion.

After some dremeling we have following:

And the final result:

I am very pleased with the results. Now i have up to 30w peak power with perfect 0012BD shape =)

C245 trics

Also have some defective JBC C245 cartridges and want to use their heat elements for another application(like custom soldering irons and etc.)

Using diamond cutting disc for making incision:

It is not neede to cut the full depth…

Now using flat screwdriver we need to open the gap:

Everything is ok:

Need to say that some new JBC iron have laser welded outer stainless steel shell:

I do not disassemble such irons yet, so do not know how to do it better…

Thank you for reading=)

ERSA i-tool protocol and interface schematics

Found very good article writen by here at Habr: https://habr.com/ru/post/369947/

Will duplicate the info here as backup and later add some addition info.

I-tool pinout:

Control unit I/o schematics:


UART specs:

  • 250000 bps
  • start bits: 1
  • data bits: 8
  • parity: no
  • stop bits: 1

request packet:

data type example description
0 u16 0x2F02 preambula(constant)
2 u8 0x05 message ID
3 u16 0x0010 Code of operation
5 u8 0x05 data length
6 u16 0x498E crc

response packet:

data type example description
0 u16 0x2F02 preambula(constant)
2 u8 0x0A message ID
3 u16 0x0010 Code of operation (from request  packet)
5 u8 0x05 data length
6 array 0x5E 0x0A 0x1C 0x03 0x00 data
n-2 u16 0x8F42 crc


Tool detection

Control unint sent this type of message each second  (1 Hz) aftre powering up till receiving tool response.


  • message ID: 0x05
  • Code of operation: 0x0001
  • Data Length: 2


  • message ID: 0x07
  • Data:
    • 0x2802: i-Tool


  • Request(hex): 02 2F ' 05 ' 01 00 ' 02 ' 3A 4D
  • Response(hex): 02 2F ' 07 ' 01 00 ' 02 ' 02 28 ' C1 A4

Tool version detection

One request after tool detection.


  • message ID: 0x05
  • Code of operation: 0x0040
  • Data Length: 2


  • message ID: 0x07
  • Data:
    • [0]: (u8) Minor
    • [1]: (u8) Major


  • Request(hex): 02 2F ' 05 ' 40 00 ' 02 ' A7 67
  • Response(hex): 02 2F ' 07 ' 40 00 ' 02 ' 00 01 ' D1 CC
    • Minor: 0
    • Major: 1

Tool status

50Hz sample rate.


  • message ID: 0x05
  • Code of operation: 0x0010
  • Data Length: 5


  • message ID: 0x0A
  • Data :
    • [0]: (u16) Temperature of the hot thermocouple junction(°C * 10)
    • [2]: (u8) Temperature of the cold thermocouple junction(°C)
    • [3]: (u16) flags (see further)


15…2 1 0


  • IDLE1 — no tool movement
  • OK1 — no errors


  • Request(hex): 02 2F ' 05 ' 10 00 ' 05 ' 8E 49
  • Response(hex): 02 2F ' 0A ' 10 00 ' 05 ' 52 0A ' 1C ' 03 00 ' 69 04
    • Temperature of the hot thermocouple junction: 0x0A52 = 264.2 °C
    • Temperature of the cold thermocouple junction: 0x1C = 28°C
    • Flags: 0x0003 = IDLE | OK

CRC detection

CRC16 used  –  CRC-CCITT, XModem.


CRC-CCITT-XModem(0x02 0x2F 0x05 0x10 0x00 0x05) = 0x498E

ERSA i-con 1 repair

Once upon a time my 5 years old ERSA i-con 1 died =)

It start to show “heater error” time to time. I’ve purchased replacement heating elemement and bought spare I-con Nano. I-con Nano covered my demands for prototyping so i do not need to repair the main unit that time.

Some time ago i found this thread on EEVBlog:


There are lots of interesting photos there but i like to post info only about the problem i found in my unit:

2,2kOhm SMT resistor was defective. When i check it first time i’ve seen ~2kOhms but later some MegaOhm.

EEVBlog user millerfield replace SMT to thru hole resistor on this photo:

So if you have same problem – check it firsly.