Varian Varian Semiconductor Equipment H5172001 Inlet Graphite Shiel — Graphite Shield for CVD Systems (Varian)

How Much Does Varian Semiconductor Equipment H5172001 Inlet Graphite Shield VSEA New Surplus Cost in 2026?

The Varian H5172001 Inlet Graphite Shield typically ranges from $810 for a used, refurbished unit in condition grade B. New units from Varian or authorized resellers can exceed $2,000, meaning buyers can save 40–60% by opting for a used or refurbished part. Refurbished units are commonly available through vendors like Ferrotec and Axus Technology, though availability is often limited due to the part's age and the retirement of many Varian CVD systems.

A failed or improperly sourced shield can result in unplanned downtime of 4–6 days during replacement and recalibration. Given the typical cost of downtime in semiconductor manufacturing—$10,000 to $20,000 per hour—this makes sourcing a reliable replacement a high-priority task. It's also worth noting that units over 15 years old may show significant wear, especially in the graphite coating, which can lead to premature failure if not inspected thoroughly.

Varian Semiconductor Equipment H5172001 Inlet Graphite Shield VSEA New Surplus Specifications and Compatible Tools

The Varian H5172001 Inlet Graphite Shield is a graphite-based component used in chemical vapor deposition (CVD) systems to direct gas flow and protect internal components from thermal degradation. It is typically rated for temperatures up to 1,100°C and has a standard service life of 1,500–2,000 RF cycles, depending on gas chemistry and process conditions. The shield is commonly used in Varian’s older CVD systems, particularly those deployed in the 1990s and early 2000s.

This part is typically compatible with Varian’s 5500 and 6500 series CVD tools. However, it is not interchangeable with the H5172002 shield, which has a different inlet geometry. Using an incompatible shield can lead to gas flow irregularities, which may result in process instability and a 10–15% yield loss in production batches.

What to Check Before Buying a Used Varian Semiconductor Equipment H5172001 Inlet Graphite Shield VSEA New Surplus in 2026

1. Age and Production Year: Units manufactured before 2005 are more likely to show wear. A shield over 25 years old is a hard reject.
2. Graphite Coating Integrity: Use a visual inspection and a surface profilometer to check for cracks or erosion. Any cracks deeper than 0.5 mm should disqualify the unit.
3. RF Cycle Count: Ask the seller for the last known cycle count. Units with more than 1,800 cycles are at high risk of failure.
4. Test for Gas Flow Uniformity: Perform a flow test using argon at 100 sccm. A deviation of more than 15% from the expected flow rate is a red flag.
5. Verify with Seller: Always confirm the part number and model compatibility. A mismatch can lead to a $5,000–$10,000 repair bill due to system recalibration.

Buying a low-quality or incompatible shield can result in a failed deposition run, which can cost $25,000–$50,000 in lost materials and rework.

FAQ

Q: Can I use the H5172001 in a newer CVD system?
A: No. The H5172001 is not compatible with systems built after 2008 due to changes in inlet geometry. Using it in a newer system can lead to gas flow issues and a 10–15% yield loss.

Q: Should I replace the H5172001 if it has 1,700 RF cycles?
A: Yes. Units with more than 1,700 cycles are approaching end-of-life. Failure risk increases by 30–40% beyond that threshold.

Q: How long does a used H5172001 last after installation?
A: Typically 600–800 RF cycles, depending on process conditions. Units in high-temperature or corrosive environments may fail sooner.

Q: What’s the difference between H5172001 and H5172002?
A: The H5172002 has a modified inlet port to accommodate new gas delivery systems. The two are not interchangeable, and using the wrong one can cause a $5,000–$10,000 recalibration cost.

Q: Is it worth buying a used H5172001 instead of a new one?
A: Yes, if the unit is under 15 years old and has less than 1,800 cycles. You can save 40–60% and avoid the long lead times of new parts, which can be 8–12 weeks.