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Daihen RG-1268 Power Supply PCB - Payton Planar Transformer 2500W

Daihen Corporation Model RG-1268 Rev. 02 Made in Japan

Overview

This is a genuine Daihen Corporation RG-1268 printed circuit board assembly, revision 02, made in Japan and removed from a working Daihen RF power generator. Daihen RF generators are widely used to drive semiconductor process chambers such as plasma etch, PECVD, and sputtering/PVD tools, and power stage boards like this one are common replacement parts for keeping those generators running.

The board is built around a Payton Planar planar transformer (P.N. 54039 Rev.01, rated 2500W) as the main power conversion element, paired with a second Payton Planar planar inductor (P.N. 54081 Rev.00, rated 2×2µH at 72A) for output filtering. The high-current switching side of the board is populated with four TO-247 power MOSFETs (Q1–Q4, IXYS-branded), a bank of high-voltage film capacitors, and two ferrite-core wound chokes (marked 12-1262A and 12-1261A). The board is labeled with a "DHP 10T S 94V-0" substrate rating and carries a "TF01" transformer designation sticker. Full visible component detail is listed in the table below.

This was removed from a working environment as a functional pull; it was not bench-tested in isolation prior to listing. A solid option for a spares kit, a repair project on a Daihen RF generator, or as a reference board for RF generator service work.

Specifications

Manufacturer	Daihen Corporation
Model	RG-1268
Revision	02
Country of Manufacture	Made in Japan
Source Equipment	Daihen RF power generator (semiconductor process equipment)
Main Transformer	Payton Planar, P.N. 54039 Rev.01, 2500W, USA Patent 5,010,314
Planar Inductor	Payton Planar, P.N. 54081 Rev.00, 2×2µH & 72A
Substrate Rating	DHP 10T S, 94V-0
Dimensions	Approx. 10.5" x 6" (measure prior to shipping quote)

Visible Components & Connectors

Main Transformer	Payton Planar P.N. 54039 Rev.01, 2500W, mounted center-top of board with heatsink/shield bracket, secured by 4 screws
Planar Inductor (TF01)	Payton Planar P.N. 54081 Rev.00, 2×2µH & 72A, mounted right-center of board
Power MOSFETs	Q1, Q2, Q3, Q4 — TO-247 package, IXYS-branded, marked IXF150N50P3 / IXFZ150N50P3 / TAR228-series
Ferrite-Core Chokes	2x wound ferrite toroid chokes, marked "12-1262A" (top) and "12-1261A" (bottom center), white bobbin construction
Film Capacitors (Left Bank)	C1–C21 — approx. 20x tan-body film capacitors in vertical stacked rows
Film Capacitors (Right Bank)	C22–C29 — approx. 8x tan-body film capacitors near right edge
Additional Capacitors	C30–C49 range labeled near Q1–Q4 switching devices
Zener Diodes	ZD1, ZD3, ZD4, ZD5, ZD6, ZD8, ZD9 (labeled locations)
Rectifier/Signal Diodes	D1–D5 (right side, near planar inductor); D6–D11 and D16, D20 (upper right and center)
Resistors	R1–R9 (labeled locations across board)
Jumpers	JP1, JP2, JP3, JP4, JP5, JP6, JP7
Header Connectors	PN1, PN2, PN3, PN4, PN5
Terminal Posts	TM1, TM2, TM3, TM4
Board Markings	Silkscreened "RG-1268 DAIHEN Corporation", "MADE IN JAPAN", "DHP 10T S 94V-0", "TF01" label, revision "02" sticker

What's Included

1x Daihen RG-1268 power supply PCB assembly, as pictured, with both Payton Planar magnetics attached
Seller retains additional cables, bolts, and hardware from this system's teardown — message before or after purchase if you need something specific, as it may be available separately.
No enclosure, chassis, or mounting hardware included
No mating cables or connectors included
No documentation, manual, or schematic included

Condition

Functional pull, removed from a working Daihen RF generator. Board and both Payton Planar magnetic components appear intact in the listing photos with no visible damage, burn marks, or cracked traces — light handling wear typical of a used industrial board. This was not bench-tested independently after removal, and no calibration or performance data is available. Please review all photos closely, as they are part of the item description.

Shipping