As automotive electronics evolve toward higher voltage systems (e.g., EV powertrains, onboard chargers), the demand for reliable, high-voltage capacitors like the KEMET R76UN23304040J surges. This AEC-Q200 certified 0.033μF/2000VDC polypropylene (PP) film capacitor combines robust performance with compact dimensions (26.5×17×17mm), offering designers a solution for DC-link, snubber, and filtering circuits. With an ultra-low ESR of 19mΩ and 110°C temperature rating, it outperforms standard film capacitors in efficiency and thermal stability. Read on to discover how this component addresses critical design challenges in automotive and industrial power electronics.
Product Overview
Fig 1. KEMET R76 Series Automotive Film Capacitors
The R76UN23304040J belongs to KEMET's R76 series of radial PP film capacitors, specifically engineered for automotive DC and pulse applications. Key attributes include:
Dielectric: Polypropylene (PP) – Low loss, high insulation resistance
Voltage Rating: 2000VDC / 700VAC (per IEC 60384-16)
Capacitance: 0.033μF ±5% (33nF, 33000pF)
Temperature Range: -55°C to +110°C (AEC-Q200 Grade 2)
Package: Rectangular can, 22.5mm lead spacing
Core Parameters & Selection Guide
| Parameter | Value | Standard/Reference |
|---|---|---|
| Capacitance Tolerance | ±5% | IEC 60384-1 |
| ESR (Equivalent Series Resistance) | 19mΩ @ 20°C, 10kHz | KEMET DS R76UN Series |
| Dissipation Factor (tanδ) | ≤0.001 (1kHz, 20°C) | IEC 60384-16 |
| Insulation Resistance | ≥30,000MΩ (1min @ 20°C) | AEC-Q200 Rev-D |
Selection Considerations:
Voltage Derating: For 110°C operation, derate to 80% of rated voltage (1600VDC)
Frequency Response: PP dielectric maintains stable performance up to 1MHz
Mechanical Stress: Avoid bending leads <3mm from capacitor body (per IPC-7351)
Typical Applications
Fig 2. R76UN23304040J in DC-Link Circuit (Source: KEMET App Note AN-2001)
EV Onboard Chargers: DC filtering in 400V-800V battery systems
IGBT Snubbers: Suppresses voltage spikes in motor drives (tested per IEC 61000-4-5)
Industrial SMPS: Resonant converters requiring low-loss capacitors
Market Analysis & Alternatives
According to MarketsandMarkets™, the automotive film capacitor market will grow at 11.2% CAGR (2023-2028), driven by EV adoption. Key competitors:
| Model | Manufacturer | Capacitance | Voltage | Advantage |
|---|---|---|---|---|
| R76UN23304040J | KEMET | 0.033μF | 2000VDC | AEC-Q200, 19mΩ ESR |
| B32652J333J | TDK | 0.033μF | 1600VDC | Lower cost |
| ECW-FD2W334J | Panasonic | 0.33μF | 450VDC | Higher capacitance |
Why Choose R76UN23304040J? When compared to alternatives, KEMET's solution offers the best balance of high-voltage capability, automotive qualification, and compact size for space-constrained designs.
Frequently Asked Questions
Q1: Can this capacitor handle pulsed discharge applications?
A: Yes. The R76 series is rated for repetitive pulses up to 2000VDC with dV/dt ≤500V/μs (per KEMET test report TR-2022-17).
Q2: Is RoHS compliance confirmed?
A: Fully compliant with RoHS 3 (2015/863/EU) and REACH SVHC standards.
Q3: What's the expected lifespan at 110°C?
A: 10,000 hours at rated voltage and temperature (per AEC-Q200 accelerated life testing).
Q4: Are there recommended storage conditions?
A: Store at 15-35°C, 35-70% RH. Avoid condensation (per IEC 60068-2-78).
Q5: Can leads be formed for PCB mounting?
A: Yes, but maintain ≥3mm straight section near capacitor body to avoid stress cracks.
Future Trends
With 800V EV architectures becoming mainstream (e.g., Porsche Taycan, Hyundai E-GMP), components like the R76UN23304040J will see increased adoption in:
Wide Bandgap (SiC/GaN) Systems: Higher switching frequencies demand low-loss PP capacitors
Bidirectional Charging: Pulse handling capability supports V2X applications
Automotive Miniaturization: Compact size (17mm height) suits integrated power modules
For pricing, samples, or technical support on the R76UN23304040J, contact our component specialists:
Email: sales@censtry.com
Discover how KEMET's automotive-grade capacitors can enhance your next high-voltage design.
