GF125C-105882 is a configured Brooks Instrument GF125C metal-sealed thermal mass flow controller record. Official Brooks GF100-series documentation supports the GF100/GF120/GF125 metal-sealed MFC/MFM family, MultiFlo-capable configurations, semiconductor and high-purity gas-delivery use, and family-level performance, materials, and communication context. Stored auction and surplus evidence associates this exact configured identifier with GF125CXXC wording, AMAT 0190-49897-02 context, and observed Ar or N2 15000 SCCM listings; gas, full-scale range, valve state, fitting package, communication option, surface finish, and OEM suffix details should be verified from the physical unit label or Brooks build record
Unit-specific configuration
Observed configuration
Historical listing records identify this part as AR at 15000 SCCM. Exact gas, range, fittings, valve configuration, and communication interface must be verified from the physical unit label.
Configurations vary. Verify the exact unit before choosing a replacement.
Application classSemiconductor/high-purity gas delivery
CategoryFlow Control
Specifications
Identification
Part identifier
GF125C-105882
Manufacturer
Brooks Instrument
Device type
Configured GF125C metal-sealed thermal mass flow controller
Series family
Brooks GF100 / GF120 / GF125 metal-sealed mass flow controller and meter family
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
GF125 package-code context
Brooks GF100-series ordering documentation identifies GF125 as a pressure-transient-insensitive package within the GF100/GF120/GF125 metal-sealed controller family; the exact configured suffix 105882 is not decoded by the family documents
C configurability-code context
Brooks GF100-series ordering documentation identifies C-code configurations as MultiFlo capable; actual gas/range and electronics options still depend on the configured unit
Applications
Application domain
Semiconductor, MOCVD, thin-film, and other high-purity 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 GF100-family documentation identifies pressure transient insensitivity as a feature that reduces sensitivity to upstream pressure changes; availability and performance depend on the configured package
Materials
Wetted path standard
Brooks GF100/GF120/GF125 documentation describes SEMI F20 HP compliant wetted materials for documented family configurations
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 documentation lists external leak integrity of 1 x 10^-10 atm cc/sec helium for documented family configurations
Controls
Communication interfaces
Brooks documentation provides Analog/RS-485, DeviceNet, RS485 L-Protocol, and EtherCAT context for GF100-family devices; the actual GF125C-105882 interface must be verified from the connector, label, or build record
Flow
Gas/range programmability
MultiFlo gas and range configurability is documented for supported GF100-family and GF-series devices
Ratings
Operating temperature context
Brooks GF100/GF120/GF125 documentation lists a 10 C to 50 C operating temperature range for documented family configurations
Observed configuration
Stored auction gas/range observations
Stored exact auction titles for this part report Ar 15000 SCCM and N2 15000 SCCM contexts; these are listing-observed contexts only, not official Brooks model-wide specifications
Observed customer/OEM marking
Stored exact auction and live surplus evidence associates GF125C-105882 with AMAT 0190-49897-02 or 0190-49897 marking; verify the physical unit label before treating the OEM marking as procurement-critical
