Photos show the actual item you will receive.
Product details
About this part
The Technol Seven Y331-70 Chuck Heater E5EJ TEL Tokyo Electron P-8 is made by Technol Seven and identified by manufacturer part number Y331-70.
This listing is for the exact part number stated above. Compare the part number, condition and photos with your equipment before ordering.
Condition
This item is listed as Used. Previously used. See condition notes and photos.
The photos are part of the description — check them for labels, connectors, markings and any visible wear.
What's included
1 × Technol Seven Y331-70 Chuck Heater E5EJ TEL Tokyo Electron P-8.
Only the items listed here or clearly shown in the photos are included. Cables, manuals, mounting hardware and accessories are not included unless stated.
Identification & compatibility
Check the manufacturer (Technol Seven), the part number (Y331-70) and the photos against your equipment. If you are not sure this is the right part, contact us before you order.
Price match
Found an identical item for less at a fixed price elsewhere? Contact us before you buy with the details, and we will review it.
Important information
Product information is based on what is available for this specific item. Where specifications or compatibility are critical to your application, confirm them before purchase.
- Brand
- Technol Seven
- Part number
- Y331-70
- Model
- Y331-70
- Country of Origin
- Japan
- Manufacturer (nameplate)
- Technol Seven Co., Ltd., Yokohama, Japan
- Type
- Y331-70
- Date (nameplate)
- 2000.12
- Input
- AC100V, single-phase, 550VA
- Output
- DC120V, 2.7A
- Temperature controllers
- 2x Omron E5EJ
- Connectors
- CN1 (AC INPUT), CN2 (CHUCK), CN4 (I/F)
- Breakers
- NFB1 and NFB2, AC100V 7.5A
- Cooling fan
- Sanyo Denki San Ace 109P1224H4D01, DC 24V 0.24A
- Condition
- Used
The Technol Seven Y331-70 is a chuck heater control unit with two Omron E5EJ temperature controllers, rated AC100V single-phase 550VA in and DC120V 2.7A out. It was made by Technol Seven Co., Ltd. in Yokohama, Japan, and has a front connector labeled CN2 (CHUCK) for the chuck heater, plus an interface connector and an AC input connector. A wafer chuck heater keeps the chuck that holds the wafer at a set temperature.
What does the nameplate say?
TYPE Y331-70, SER No. E008305-32, DATE 2000.12, INPUT AC100V, 1φ, 550VA, OUTPUT DC120V, 2.7A, TECHNOL SEVEN Co., LTD., YOKOHAMA, JAPAN.
What is on the front and sides?
- Two Omron E5EJ temperature controllers with °C PV and SV displays and OUT, RMT, ALM1, ALM2 and HB indicators
- Connectors CN4 (I/F), CN2 (CHUCK) and CN1 (AC INPUT)
- A Sanyo Denki San Ace brushless DC cooling fan, 109P1224H4D01, DC 24V 0.24A
- Two circuit breakers on the side, NFB1 and NFB2, each AC100V 7.5A
- F.G (frame ground) terminal and a line-voltage warning label on the top
How do I confirm it is the right unit?
Match the type number Y331-70 on the nameplate and the AC100V input / DC120V output rating with the unit in your tool. Condition: used. Cables are not shown in the photos.
- Ships from
- Israel
- Tracking
- Included on every order
Import duties and taxes may apply in your country and are paid by the buyer on delivery.
- Returns
- Not accepted
Return terms differ from item to item — this item's own policy is shown above.
Whatever it says, an item that arrives faulty or not as described is covered: tell us within 30 days of delivery and we will refund or replace it.
Consumers in the EU, the UK and Israel keep their legal right to cancel within 14 days. Full details and the return request form are on our Returns and warranty page.
Questions about this part
What is the Technol Seven Y331-70?
A chuck heater control unit. Two Omron E5EJ temperature controllers drive the heater output on connector CN2 (CHUCK).
What is a chuck heater?
A heater built into or under the chuck that holds a wafer, used to keep the wafer at a controlled temperature. This unit supplies and controls that heater.
What power does it need?
AC100V single-phase, 550VA, through connector CN1 (AC INPUT). The output is rated DC120V, 2.7A.
Which temperature controllers are fitted?
Two Omron E5EJ controllers, each with PV/SV displays and ALM1, ALM2 and HB indicators.
Are cables included?
No cables are shown in the photos. Ask us before ordering if you need them.
What condition is it in?
Used.
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