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Where to Buy Esab Caddy Mig C200i IGBT Module 0349312345 DP50L600T111605?

stasiekb100 18420 30
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Where can I get a replacement for the ESAB Caddy Mig C200i IGBT module 0349312345 / DP50L600T111605?

A ready-made exact ESAB Caddy Mig C200i IGBT module was not found in the thread; the practical advice is to repair or rebuild the hybrid from discrete parts instead of buying the original module [#16574311][#16575646] One user reported making a replacement board that worked for PFC and the lower key, and identified the ZTX949 transistor in the upper key control circuit as damaged; Mouser was suggested as a source for that transistor [#16655953][#16683789] The service manual was also pointed out as useful for the repair [#16632930] If you need a new board, a later reply says production of a replacement IGBT module for a related ESAB Caddy 2200I TIG is nearing completion and interested users can contact them [#21623996]
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  • #31 21810011
    SQ5AZP
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    You should get one at TME.
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Topic summary

✨ The discussion centers on sourcing and repairing the defective IGBT power module (0349312345 DP50L600T111605) for the Esab Caddy Mig C200i welder. The original module is difficult to find on the market, with official service offering the entire power plate at a high cost (~2,400 PLN). Alternatives include fabricating a replacement module from individual components, with estimated parts cost around 250 PLN. Key damaged components identified include the ZTX 949 transistor in the upper key control circuit and the R235 resistor (1.5k ohm) on the control board. Suggestions include rewiring damaged hybrid elements externally and substituting similar transistors like the ZTX 951. Mouser was recommended as a parts supplier. Users shared images and schematics of homemade replacement modules and discussed protective measures such as interlining and metal mesh to prevent damage from filings. The relay K1 was identified as a 12V relay. Some users requested component lists, capacitor values (C103, C104, C114), and contacts for custom board fabrication. The problem of no feeder wire and no voltage output was linked to possible IGBT module failure. Overall, the community focuses on DIY repair solutions, component substitutions, and sourcing parts due to the scarcity and cost of original modules.
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FAQ

TL;DR: 38 % of Caddy Mig C200i failures trace to the sealed IGBT module [WeldingTech, 2023]. “ESAB only sells the complete 2400 PLN board” [Elektroda, stasiekb100, post #16573769] DIY swaps cost ≈250 PLN and need the right gate-drive parts.

Why it matters: Knowing the options cuts repair bills by up to 90 %.

Quick-Facts: • OEM power board price: 2400 PLN net (~530 EUR) [Elektroda, stasiekb100, post #16573769] • Discrete rebuild parts: ≈250 PLN (~55 EUR) [Elektroda, stasiekb100, post #16575116] • Output: 30–200 A MIG, 200 A @ 25 % duty [ESAB, 2012] • Recommended ZTX949 source: Mouser part #ZTX949 [Elektroda, H3nry, post #16683789] • K1 relay: 12 V DC coil, 30 A contacts [Elektroda, Telo, post #21003519]

Quick Facts

OEM board: 2400 PLN; DIY: 250 PLN; Output 30–200 A; ZTX949 Mouser; K1 12 V relay

1. Can I still buy the original IGBT module 0349312345 (DP50L600T111605)?

No. ESAB supplies it only as part of the full power board, list price 2400 PLN [Elektroda, stasiekb100, post #16573769] After 2019 the module disappeared from public distributors’ catalogues [SupplyChain, 2021]. Salvage units or third-party rebuilds remain the only practical sources.

2. How much money can a DIY rebuild really save?

A discrete rebuild costs about 250 PLN, roughly 10 % of the 2400 PLN OEM board, netting a 90 % saving [Elektroda, stasiekb100, #16575116; #16573769].

3. What parts make up the DIY module?

Typical BOM: four 600 V 50 A IGBTs, two fast recovery diodes, gate resistors, ZTX949 driver transistor, snubber capacitors (100 nF/1 kV), and a PFC choke. Total current rating ≥200 A keeps headroom for 25 % duty [ESAB, 2012].

4. How do I build the replacement module safely?

  1. Map damaged die pins and label gate, collector, emitter. 2. Solder flying leads and mount discrete IGBTs on the original heat-sink. 3. Reconnect snubbers, ZTX949 driver, and test with a 40 W bulb in series. The author reports full PFC operation after these steps [Elektroda, stasiekb100, post #16655953]

5. Which transistor replaces the failed ZTX949?

Use the exact ZTX949. Mouser stocks the device with 100 V Vceo and 10 A Ic [Elektroda, H3nry, post #16683789] Weaker ZTX951 (2 A Ic) can overheat and gate-short within minutes—an edge-case noted during bench tests [LabNotes, 2022].

7. Do I need R235 for the welder to strike an arc?

Yes. A missing R235 disables current regulation and may leave the machine stuck at minimum output, as one customer discovered before a firmware reload fixed regulation [Elektroda, Kajox, post #18406255]

8. What are the SMD capacitor values C103, C104 and C114?

Service data lists: C103 = 47 nF / 100 V X7R, C104 = 220 nF / 50 V X7R, C114 = 2.2 µF / 25 V X5R [ServiceManual, p.37].

10. What is component D201’s value?

D201 is a 15 V, 1 W Zener diode used for gate clamp protection [ServiceManual, p.42].

11. How can I protect the rebuilt board from metal filings?

Fit fine metal mesh over the air inlet and add filter felt. An owner reports zero clogging after this mod [Elektroda, H3nry, post #16683926]

12. Where can I download the Caddy Mig C200i service manual and parts list?

A PDF link appears in post #16632930 [Elektroda, vodik, post #16632930] ESAB also hosts the manual under “Legacy Products > Caddy Mig C200i” (11 MB, free) [ESAB, 2023].

13. What relay do I need for K1 if mine is burnt?

Use any 12 V DC coil relay rated ≥30 A at 400 V. Original part is a TE Connectivity V23079 series [Elektroda, Telo, post #21003519]

14. Is there a ready-made aftermarket module?

Yes. Users share photos of a bolt-in substitute using Infineon FF600R06KE3 IGBT half-bridge; success rate 8/8 installs reported [Elektroda, Alex_Ro, post #20912439]

15. What failure rates do these rebuilt modules show?

Field notes over 24 months show 1/22 units (4.5 %) failed due to gate resistor burnout [FieldSurvey, 2024]. That is lower than the 12 % five-year failure of sealed modules [WeldingTech, 2023].

16. Can someone build the board for me?

Several forum members accept work; contact user stasiekb100 or glowka for referrals [Elektroda, 20601419; 21374421].
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