Overview
The M39018/01-0689 is a MIL-SPEC aluminum electrolytic capacitor designed for demanding military, aerospace, and industrial applications. This M39018/01 series capacitor delivers precision capacitance in a compact axial configuration, meeting stringent government specifications for reliability and performance in critical systems.
Key Features
- MIL-PRF-39018/1 qualified miniature axial-lead design
- 5.6 µF capacitance with tight tolerance control
- 300 VDC working voltage at 85°C; 225 VDC @ 125°C (rated for surge to 325/250 VDC respectively)
- Operating temperature range: –55°C to +125°C
- Shrink-wrapped insulation sleeve for safety and durability
- Military-grade construction for long service life in harsh environments
Technical Specifications
| Part Number | M39018/01-0689 |
| Capacitance | 5.6 µF |
| Voltage Rating (85°C) | 300 VDC working / 325 VDC surge |
| Voltage Rating (125°C) | 225 VDC working / 250 VDC surge |
| Temperature Range | –55°C to +125°C |
| Package Style | Miniature axial-lead (20 AWG lead gauge) |
| Specification | MIL-PRF-39018/1F |
| Lead Type | Tin-plated copper, axial configuration |
| Insulation | Shrink-wrapped sleeve |
| Compatible Manufacturers | Barker Microfarads, Vishay, Sprague, TTI |
Typical Applications
- Aerospace and defense power supplies
- Military communication systems and RF equipment
- High-temperature avionics electronics
- Industrial control systems requiring extended temperature operation
- Filtering and energy storage in rugged environments
- Retrofit and equipment restoration for legacy mil-spec systems
Compatibility & Replacements
Compatible With
- MIL-PRF-39018/1 specification equipment and schematics
- Military-grade power supplies and filter applications
- High-reliability defense electronics requiring extended temperature ratings
- Equipment designed for continuous operation at elevated ambient temperatures
- Aerospace and marine electronics systems
Replaces / Drop-In Replacement For
- Original M39018/01-0689 units in military and aerospace restoration projects
- Equivalent 5.6 µF military capacitors in similar voltage/temperature specifications (verify exact voltage and surge ratings before substitution)
Works With
- MIL-C-39018 and MIL-PRF-39018/1 qualified circuits and assemblies
- Military power distribution and filter networks
- High-reliability industrial and control applications
- Systems requiring extended–55°C to +125°C operating temperature
- Legacy avionics and military equipment requiring direct replacement components
