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RA Series Multilayer Film Capacitors
Cornell Dubilier Knowles' RA series for high-frequency RFI/EMI suppression, ignition pulse forming, and motor controllers
Cornell Dubilier Knowles’s RA series 125°C radial multilayer film capacitors offer high capacitance per unit volume, efficient use of PCB space, lower self-inductance compared to conventional wound film capacitors, and high self-resonant frequency (exceeding 10 MHz) allows higher frequency operation. The RA series have welded radial-leads in a slim rectangular package made with durable non-inductive construction. Their sizes vary based on values/ratings, ranging from 8.9 mm x 3.9 mm x 7.1 mm to 16.5 mm x 6.6 mm x 11.7 mm. The RA series is designed to maintain performance over a long life. They outperform MLCC devices and are ideal for high-rel, no-fail applications.
Features
- Small size/shape allows dense circuitry design
- Rugged, self-encased construction
- High-reliability design:
- Assembled with a high laminating pressure to prevent air gaps between polyester film layers
- Self-healing with no-short failure mode
- Impregnated with a microcrystalline polymer sealant under vacuum for resistance to moisture
- Very low ESR/ESL and high dv/dt
- Meets MIL Std 202 Method 204D for vibration
- Voltage rating: 100 VDC, 250 VDC, 400 VDC, and 500 VDC
- RoHS compliant and wave-solderable
- Capacitance range 0.1 µF to 10 µF
- Operating temperature: -55°C to +125°C
- Moisture resistance: +85°C/85% RH/21 days
- Dissipation factor: ≤1.0% @ 25°C, 1 kHz
- Self-inductance is only 2 nh to 6 nh (typical)
- High-frequency response is similar to MLCCs with better performance
- Capacitance is unaffected by applied bias voltage
- Resists damage from pulses
- No piezoelectric effect
- No cracking
- Greater lifespan
Applications
- In-circuit applications include:
- EMI/RFI suppression
- Board-level power conversion
- Pulse generation
- Any circuit requiring low ESR/ESL, high dv/dt
- Input/output filtering in 48 V telecom bus power applications (on-board or DC/DC modules)
- High-reliability, no-fail applications
- Automotive fuel pump circuitry
- Brushless DC motor driver circuits
- Pulse generation in solid-state ignition circuitry for small engines
- Provides ultra-reliable filtering and smoothing for applications in:
- UPS systems
- High-frequency switching power supplies
- Inverters and micro-inverters
- DC output power conditioning
RA Series Capacitors
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
 |  | RA4105K100-FA | CAP FILM 1UF 10% 100VDC RADIAL | 1270 - Immediate | $4.33 | View Details |
|  | RA6105K250-FA | CAP FILM 1UF 10% 250VDC RADIAL | 0 - Immediate | $3.90 | View Details |
|  | RA4334K250 | CAP FILM 0.33UF 10% 250VDC RAD | 0 - Immediate | $1.51 | View Details |
|  | RA4474K250-FA | CAP FILM 0.47UF 10% 250VDC RAD | 1084 - Immediate | $3.63 | View Details |
|  | RA4104K250-FA | CAP FILM 0.1UF 10% 250VDC RADIAL | 0 - Immediate | $1.51 | View Details |
|  | RA3225K100 | CAP FILM 2.2UF 10% 100VDC RADIAL | 0 - Immediate | $2.62 | View Details |
|  | RA4225K100 | CAP FILM 2.2UF 10% 100VDC RADIAL | 0 - Immediate | $2.50 | View Details |
|  | RA4335K100-FA | CAP FILM 3.3UF 10% 100VDC RADIAL | 0 - Immediate | $3.25 | View Details |
|  | RA4405K100-FA | CAP FILM 4UF 10% 100VDC RADIAL | 0 - Immediate | $5.24 | View Details |
|  | RA4505K100 | CAP FILM 5UF 10% 100VDC RADIAL | 0 - Immediate | $6.28 | View Details |
|  | RA6504K500-FA | CAP FILM 0.5UF 10% 500VDC RADIAL | 5203 - Immediate | $6.94 | View Details |
|  | RA6106K100 | CAP FILM 10UF 10% 100VDC RADIAL | 712 - Immediate | $19.71 | View Details |
Published: 2019-02-26
United Kingdom