Brooks Instrument GF125 Series Metal-Sealed Mass Flow Controller
About this part
GF125C-205592 is a configured Brooks Instrument GF125/GF100-family metal-sealed thermal mass flow controller for semiconductor, MOCVD, thin-film, and high-purity gas delivery. Official Brooks GF100/GF120/GF125 documentation covers the platform, performance context, wetted-materials context, communication families, MultiFlo support, and installation guidance, but no verified official one-part specification for GF125C-205592 is currently available Stored auction evidence associates this exact configured identifier with GF125CXXC wording and N2 15000 SCCM and O2 15000 SCCM listing context; verify gas, full-scale range, valve state, fitting package, communication option, and any customer or OEM marking from the physical unit label before reuse
Configurations vary. Verify the exact unit before choosing a replacement.
Application classSemiconductor/high-purity gas delivery
CategoryFlow Control
Specifications
Identification
Part identifier
GF125C-205592
Device type
Metal-sealed thermal mass flow controller
Series family
Brooks GF100 / GF120 / GF125 metal-sealed mass flow controller and meter family
Observed model context
GF125CXXC appears in stored exact auction evidence for this configured code; treat it as observed model wording, not as an exact alias
Applications
Application domain
Semiconductor, MOCVD, thin-film, and high-purity process gas flow control applications requiring an all-metal flow path
Performance
Family accuracy context
Brooks GF100/GF120/GF125 documentation lists +/-1% of set point above 35-100% and +/-0.35% full scale over 2-35% based on factory N2 calibration for applicable analog and DeviceNet configurations
Family repeatability context
Brooks GF100/GF120/GF125 documentation lists repeatability and reproducibility of +/-0.15% of set point from 5-100% and +/-0.015% full scale from 2-5%
Family settling-time context
Brooks GF100/GF120/GF125 documentation lists normally closed valve settling-time bins from 300 ms to less than 700 ms across documented flow bins, depending on configuration
Pressure transient insensitivity
Brooks documentation identifies GF125 devices as pressure transient insensitive and describes real-time valve-position compensation for pressure transients
Materials
Wetted path standard
Brooks GF100/GF120/GF125 documentation describes SEMI F20 HP compliant wetted materials
Wetted materials context
Brooks GF100/GF120/GF125 documentation lists wetted material context including 316L VIM/VAR, Hastelloy C-22, 316L stainless steel, 304 stainless steel, KM-45, and PCTFE on optional zero leak-by valve configurations
Leak integrity
External leak integrity
Brooks GF100/GF120/GF125 data-sheet table lists external leak integrity of 1 x 10^-10 atm cc/sec helium
Controls
Communication interfaces
Brooks documentation provides Analog/RS-485, DeviceNet, RS485 L-Protocol, and EtherCAT context for the GF100 family; the actual interface depends on the configured electronics option
Flow
Gas/range programmability
MultiFlo gas and range configurability is documented for supported GF100-family devices
Ratings
Operating temperature context
Brooks GF100/GF120/GF125 documentation lists a 10 C to 50 C operating temperature range for documented family configurations
Configuration
Configured-unit rule
Gas, full-scale flow range, valve or meter configuration, fitting package, electrical connector, communication protocol, display, surface finish, seal package, and customer/OEM options vary by full configured model code
Observed configuration
Stored auction gas/range combinations
Stored exact auction evidence reports N2 15000 SCCM in one listing and O2 15000 SCCM in one listing for GF125C-205592; use this as observed listing context and verify against the physical unit label
Stored listing observations
Stored exact auction evidence identifies GF125C-205592 as a Brooks Instrument GF125CXXC mass flow controller with N2 15000 SCCM and O2 15000 SCCM listing context; use this only as observed identity and configuration context
