Overview
The RSF-1 metal oxide film resistor is a general-purpose axial-lead fixed resistor rated for 1W continuous power dissipation at 70°C. This 750kΩ unit features ±5% tolerance and a ceramic oxide film construction that provides excellent stability and uniformity across diverse operating conditions. Supplied in bulk lots of 100, the RSF-1 is ideal for prototyping, repair, and production assembly where cost-effective, reliable resistive elements are required.
Key Features
- Metal oxide film construction – Offers excellent performance in applications where stability and uniformity of characteristics are desired
- 1W power rating at 70°C ambient temperature
- 750kΩ resistance value with ±5% tolerance
- Axial lead configuration – Standard through-hole mounting for PCB assembly
- Flame-retardant lacquer coating – Meets EIAJ-RC2655A safety standards
- Bulk packaging – Lot of 100 units for economy of scale
Technical Specifications
The RSF-1 series is constructed with a high-purity ceramic core and metal oxide film layer deposited via thermal oxidation. Features include high safety standard, high purity ceramic core, excellent flame retardant coating, and stable performance in diverse environments. The axial lead design ensures compatibility with standard PCB through-hole assembly processes.
Typical Applications
- Audio amplifier bias networks and coupling stages
- Power supply feedback and current-sense networks
- Signal conditioning and analog filter circuits
- Industrial control and instrumentation boards
- Consumer electronics and appliance repair
- Educational and prototype development kits
Compatibility & Replacements
Compatible With
- Standard PCB through-hole assembly equipment and solder processes
- Manual hand-soldering and wave-solder production lines
- Any circuit topology requiring 750kΩ fixed resistive elements
- RoHS and REACH-compliant manufacturing processes
Replaces / Drop-In Replacement For
The RSF-1 750kΩ 1W is a direct replacement for equivalent 750kΩ 1W ±5% metal oxide or film resistors from competing manufacturers (Yageo, KOA, Panasonic, Xicon, Vitrohm) in the same axial form factor and lead spacing. Verify exact lead length and body diameter with your PCB design before ordering if migrating from earlier designs.
Works With
- Standard PCB CAD libraries (footprint: axial 0.6″ lead spacing typical)
- Conventional soldering equipment (wave, reflow, hand-solder)
- Test and measurement instruments for in-circuit resistance verification
- Environmental test chambers for temperature coefficient characterization (±300ppm/°C nominal)
