Obsolete & Discontinued Automation Parts Sourcing

Overview

When a manufacturer ends production, the parts in your machines become a downtime risk. TGK Parts specializes in sourcing obsolete and discontinued automation parts — the models OEMs no longer list: SIMATIC S7-200 and S7-300 racks, Allen-Bradley SLC 500 modules, MICROMASTER 420/430/440 drives, Mitsubishi FR-A500/E500 series, PanelView Standard panels and hundreds of similar end-of-life MPNs.

Send us the MPN or a nameplate photo. We work a global surplus network — verified dealers, factory decommissioning stock and integrator inventories — and reply within 12 hours with availability, price and lead time.

Why Parts Become Hard to Find

Automation platforms follow a 15–25 year lifecycle: silicon obsolescence, factory retooling and OEM portfolio consolidation all end production long before the installed base retires. Machines built on S7-300 or SLC 500 racks still run in thousands of plants, but their modules are out of OEM production — leaving maintenance teams with three options: pay scalper prices, redesign the control system, or work with a sourcing specialist.

What We Source

Siemens	S7-200 / S7-300 / S7-400 CPUs and I/O, MICROMASTER 420/430/440, Masterdrive, SIMATIC HMI OP/MP series
Allen-Bradley	SLC 500 (5/01–5/05), PLC-5, ControlLogix early revisions, PowerFlex 4/40/70, PanelView Standard / Plus / 1000
Mitsubishi	FX1N/FX2N/FX3U, A series, FR-A500/E500/D700, GOT A900/F900, MR-J2/J3 servo
Omron	CPM1/CPM2, C200H/CQM1, 3G3JV/MX2, NT series HMI
Schneider / ABB	Modicon Premium/Twido, ATV31/ATV71 early revisions, ACS350/ACS550

Our 4-Step Sourcing Process

Send the MPN or a nameplate photo — we confirm the exact revision, not just the base model
Global sourcing — our surplus network of verified dealers, decommissioned stock and integrator inventories is queried within hours
Quote within 12 hours — availability, condition grade, price and lead time, with alternatives if the exact MPN is unavailable
Test and ship — every sourced unit is bench-tested before shipping, with photos and a 12-month warranty

Typical Scenarios

Unplanned downtime	Line-down emergencies where the failed module is out of OEM production — we prioritize sourcing around the clock.
End-of-life replacement	Planned replacement of obsolete modules before they fail, so maintenance can be scheduled, not reacted to.
Retrofit & modernization	Sourcing the last batch of a discontinued module to keep legacy racks running until the upgrade budget lands.
OEM machine support	Machine builders supporting installed equipment that still runs discontinued control platforms.

Lead Times

In stock (our inventory)	Ships within 24–48 hours
Surplus network sourcing	3–10 days, updates every 48 h
Not found	Honest answer within 3 days + alternatives

Shop by Brand

FAQ

How long does it take to find an obsolete part?

In-stock items ship within 24–48 hours. Sourcing requests typically close in 3–10 days; we update you every 48 hours until the part is located.

What if the part cannot be found at all?

We tell you honestly within the first update cycle and propose alternatives: a compatible later revision, a tested refurbished exchange, or an engineered substitute with our engineering team's assessment.

Do obsolete parts come with a warranty?

Yes — 12 months on every sourced unit, same as our in-stock items.

Can you sign a long-term supply agreement for our installed base?

Yes — for plants with a known list of obsolete equipment, we can set up a standing sourcing agreement with agreed response times and pricing bands.

Do you provide test reports?

Every unit ships with a condition photo set and test notes; full test reports are available on request for drives and CPUs.