5850E — 5850E Mass Flow Controller (Brooks Instrument)

How Much Does 5850E Cost in 2026?

In 2026, used 5850E units range from $888–$4,040, depending on condition and calibration history. Refurbished models (with <10k operating hours) typically cost $3,200–$4,040, while non-refurbished used units (Grade B) fall between $888–$1,500. New OEM 5850E units list at $8,000–$12,000, making used/refurbished options 50–70% cheaper.

Critical caveat: Units with >40,000 RF-hours often require solenoid valve replacement (Brooks 5850-1223) and pressure sensor recalibration. Always verify the last PM date—Brooks recommends annual calibration for semiconductor applications.

5850E Specifications and Compatible Tools

The 5850E operates at 12–36 VDC, 0–100 SCCM flow range, ±1.5% accuracy, and 0–35 psia inlet pressure. It uses Brooks’ thermal dispersion sensing and requires a 24VDC power supply (Brooks 5850-1101).

Compatible tools include:

• AMAT Centura (2000–2010 models)
• Lam 2300 Exe (2005–2012 revs)
• TEL Trias (gas panel variant 3.2A)
• Novellus Vector (pre-2015 gas boxes)
• Hitachi HCP-5000 gas modules

Compatibility warning: The 5850E-12 variant uses a different pressure inlet port (NPT vs. MNPT), requiring an adapter (Brooks 5850-1402) for Lam 2300 systems.

What to Check Before Buying a Used 5850E in 2026

1. Flow accuracy test: Use a Brooks 5850-1301 calibration gas (5 SCCM) and measure deviation. Reject units >±2% error.
2. Solenoid health: Apply 24VDC and time the valve response. Fail if actuation exceeds 150ms (spec: <120ms).
3. Corrosion inspection: Check the inlet filter (part 5850-1210) for particulate buildup. Replace if >50% clogged.
4. Calibration date: Units calibrated post-2024 require no immediate recalibration. Pre-2022 calibrations risk ±3% drift.
5. Pressure drop test: Use a Fluke 729 multimeter to measure differential pressure. Fail if >0.5 psi at 50 SCCM.

Q: Is 5850E used in 2026 reliable for high-purity gas systems?
A: Yes, if calibrated post-2024 and solenoid response time is <120ms. Avoid units with >40k operating hours.

Q: 5850E vs 5860E — which is better for Lam 2300?
A: The 5850E is preferred for 2300 Exe gas boxes (flow <50 SCCM). The 5860E (0–500 SCCM) requires a flow restrictor (Brooks 5860-1003).

Q: Does the 5850E need a power supply?
A: Yes. Use Brooks 5850-1101 (24VDC, 500mA) or equivalent. Avoid generic PSUs—voltage spikes damage the sensor.

Q: How to confirm OEM compatibility?
A: Cross-check the tool’s gas box serial number with Brooks’ 2026 compatibility matrix (available on caladansemi.com/resources).