Varian Varian Semiconductor Vsea H0258001 Eq Mech Platen H1970001 3 — Mechanical Platen for 350D (Varian)

How Much Does Varian Semiconductor VSEA H0258001 EQ Mech Platen H1970001 350D H0236001 Working Cost in 2026?

As of June 2026, the Varian Semiconductor VSEA H0258001 EQ Mech Platen H1970001 350D H0236001 Working is priced at $1,210 for a used, refurbished unit in condition grade B. This price is consistent across most major refurbishment vendors, including Axus Technology and Ferrotec. New units from Varian or authorized resellers typically range from $3,000 to $3,500, meaning buyers can save between 40–60% by opting for a used part.

Condition tiers can significantly affect pricing. A Grade A unit, typically with less than 10,000 RF-hours and minimal wear, may command up to $1,500, while a Grade C unit, with visible wear and potential performance issues, may be available for as low as $900. However, the lower-tier units carry a higher risk of failure, which could result in unplanned downtime costing $10,000 or more in lost production. Always verify the condition and service history before purchase.

Varian Semiconductor VSEA H0258001 EQ Mech Platen H1970001 350D H0236001 Working Specifications and Compatible Tools

The Varian Semiconductor VSEA H0258001 EQ Mech Platen is a mechanical platen used in 350D systems for semiconductor deposition processes. It is typically rated for up to 15,000 RF-hours and is commonly used in systems manufactured between 2008 and 2014. The platen is designed to interface with the H0236001 working unit and is often found in clusters with part numbers H1970001 and H0258001.

This part is compatible with Varian 350D systems and some 350C models from the same era. However, it is not compatible with newer 350E or 350F systems, which use a different platen interface. Failure to match the correct platen to the system can result in mechanical misalignment and process failure, potentially damaging the chamber and requiring a full system shutdown, which can cost upwards of $15,000 in downtime.

What to Check Before Buying a Used Varian Semiconductor VSEA H0258001 EQ Mech Platen H1970001 350D H0236001 Working in 2026

1. Verify Production Year: Units produced before 2010 tend to have lower reliability due to early design iterations. Units from 2011 onward are typically more robust and have better wear characteristics.

2. RF-Hour Threshold: A platen with more than 12,000 RF-hours is a red flag. Beyond this, performance degrades rapidly, and the risk of failure increases by over 50%.

3. Visual Inspection: Look for signs of thermal stress, such as warping or discoloration. A platen with visible cracks or pitting should be rejected outright.

4. Test with a Vacuum Leak Test: This is a standard method to detect microfractures or seal failures. A leak rate above 1e-6 Torr·L/s is unacceptable.

5. Check Refurbishment History: Units that have been fully overhauled by a certified vendor like Axus Technology or Ferrotec are more reliable. Avoid units with only cosmetic refurbishment and no functional testing.

Buying a faulty platen can lead to process instability, requiring emergency maintenance and potentially costing $12,000 in lost throughput and repair costs.

FAQ

Q: Can I use the VSEA H0258001 platen in a 350E system?

A: No. The VSEA H0258001 is not compatible with 350E systems. These systems use a different platen interface, typically part number H0258002. Attempting to use the wrong platen can cause mechanical failure and require a full chamber rebuild.

Q: Should I buy a used platen with 14,000 RF-hours?

A: Avoid it. A platen with 14,000 RF-hours is near or past its typical lifecycle. Performance degradation is likely, and the risk of failure is high. A platen with under 12,000 RF-hours is a safer bet.

Q: How long can I expect a used VSEA H0258001 platen to last?

A: With proper maintenance and under typical process conditions, a used platen in good condition can last between 3–5 years. However, if it has already exceeded 10,000 RF-hours, expect a shorter lifespan and more frequent maintenance.

Q: What’s the difference between a VSEA H0258001 and H0258002 platen?

A: The H0258002 is used in newer 350E systems and has a different mounting interface and thermal management design. The H0258001 is for 350D and earlier systems. They are not interchangeable.

Q: Is it worth buying a used platen from a non-Varian vendor?

A: Yes, but only if the vendor is certified and can provide full refurbishment documentation. Vendors like Axus Technology and Ferrotec are known for high-quality used parts. A used platen from a non-certified vendor may save money upfront but could cost $10,000+ in downtime if it fails.