Need help identifying heating element of a Hakko 936B clone - Page 1
Forum section: electronics / repair

author: raz221
author_rank: Contributor
timestamp: June 09, 2016, 07:02:26 pm
content: Hey guys.I've purchased a 936B (soldering station) hakko replica about 9 months ago from dealextreme.It's made by a Chinese company called best.Anyhow, it's still working perfectly fine and is properly calibrated , but I am trying to obtain some spare heating elements for it just to be on the safe side, and that's where the problem is (the manual doesn't specify which exact element is used, and from looking around online, I've learned that there are essentially two different elements for this iron, which are A1321 and A1322, but I couldn't really figure out which one I need)Basically, the element I currently have is 0.4 CM (centimeter) in diameter, and has 4 wires (two reds, one blue, and one transparent)Also, the circuit board (where the element is attached to) has the following markings on it:Code:120923YH-936B-6V2 (or maybe it's 6U2, not entirely sure as it's a bit hard to tell, but it lookslike a V to me)I've measured the resistance, and it's as follows:red to red: 13.5 ohmsblue to transparent : 1.1 ohmsJudging by the info I found on the following topic:Code:https://www.eevblog.com/forum/reviews/genuine-vs-fake-hakko-936-ceramic-heater-a1321/I'd suspect it's the A1322 kind (as the resistance is similar), but I'd really appreciate some confirmation.I'm sure some of you have the same iron (with the exact part number as above) and have done this before.

author: tautech
author_rank: Super Contributor
timestamp: June 09, 2016, 08:29:56 pm
content: Welcome to the forum.My spare A1322 50W 24V 3.85mm element measures:Red to red 24.3 OhmsBlack to transparent 1.7 OhmsHowever it doesn't list the 936 on the packet as being suitable for.Instead 900M, 900L, 907, 908,913,914.A mate & I grabbed a number of these from Aliexpress for little cost, sorry don't know the seller now however the manufacturer was Dong Mao.

author: raz221
author_rank: Contributor
timestamp: June 09, 2016, 09:02:12 pm
content: I appreciate the warm welcome, and thanks for replying!Anyhow, I guess 1322 it is then (has to be, given the fact the 1321 kind has a much higher resistance and it's the only two available elements!)Also, just for the record, neither elements is specifically made for 936B (as can be seen on these product images):Code:http://i01.i.aliimg.com/img/pb/716/815/231/1260752413545_hz_myalibaba_web3_95.jpghttp://img.dxcdn.com/productimages/sku_144034_5.jpgAs far as I know, With Hakko irons (and their clones) the model number of the iron handle & controller/transformer box are two separate things.So the model on the heating element packaging refers strictly to the model of the handle (the iron itself)And don't worry, DX have both elements available, so I'm sure I'll get by!

author: bitwelder
author_rank: Super Contributor
timestamp: June 10, 2016, 04:54:31 am
content: Quote from: raz221 on June 09, 2016, 09:02:12 pmSo, are A1321 and A1322 of different power?

author: sleemanj
author_rank: Super Contributor
timestamp: June 10, 2016, 07:18:11 am
content: Forchinese sourcedelements (does not necessarily apply to genuine Hakko even if the part numbers are the same)...A1321 cold temperature (thermistor) resistance: ~60 OhmsA1322 cold temperature (thermocouple) resistance: ~4 OhmsA1321 heater resistance: ~8 OhmsA1322 heater resistance: ~18 OhmsThere is also a stainless steel (as opposed to ceramic) type, A1323, I don't know what it's numbers are.[ edit: didn't notice you'd already seen that thread, anyway above is from that ]

author: raz221
author_rank: Contributor
timestamp: June 10, 2016, 12:40:51 pm
content: Quote from: bitwelder on June 10, 2016, 04:54:31 amJudging by the packaging, both are 24V, but it appears the A1321 is a 50W only element, while the A1322 can operate anywhere between 30-50W (depending on the transformer box) and they also have different resistance levels on top of that. So overall, they're not interchangeable!If you also have a 936 soldering station (and in need of a spare or replacement element) make sure you get the right one in order to avoid possible damage.Quote from: sleemanj on June 10, 2016, 07:18:11 amIt's okay, at least you tried

author: bitwelder
author_rank: Super Contributor
timestamp: June 11, 2016, 07:11:14 am
content: Quote from: raz221 on June 10, 2016, 12:40:51 pmAlso, it seems they use a different method to sense the temperature, thermistor vs thermocouple.

author: mich41
author_rank: Regular Contributor
timestamp: June 11, 2016, 06:08:24 pm
content: Quote from: raz221 on June 10, 2016, 12:40:51 pmMore like 20W-30W. Their high resistance limits power output at 24V to 30W (24*24/19=30) and some cheap stations can't even deliver those 24V because transformer output drops under load.Also, A1322 are longer.