Ceramic capacitor LP, SP series

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Overview
CeraLink capacitors provide a compact, high-capacitance-density solution for demanding high-frequency and high-temperature power electronics where space, high current and fast switching are critical.

Summary
CeraLink capacitors use a RoHS-compatible PLZT (lead lanthanum zirconium titanate) ceramic combined with copper inner electrodes. They exhibit a capacitance peak at the specified operating voltage (positive bias behaviour) and are optimized for fast-switching wide bandgap (WBG) semiconductors, offering high capacitance density and high current capability in small SMD packages.

Key benefits

• Increasing capacitance with DC bias between 0 V and Vop (positive bias behaviour) and best-in-class capacitance density at operating point (Vop & Top).
• Capable of handling extremely high ripple currents.
• High reliability with qualification based on AEC-Q200.
• RoHS compatible.
• Copper inner electrodes reduce HF losses and enable fast slew rates with high Imax.
• Generally low self-heating and favorable thermal self-regulation for stable performance.
• Surface-mountable using standard MLCC reflow profiles.

At high frequencies

• Optimal frequency range: 100 kHz to 1 MHz.
• Minimal ESR due to low-loss copper electrodes and HF-suited backend.
• Low losses enabling very high dV/dt performance.
• Suitable for fast-switching converters with high transient demands.

At high temperature

• Operating temperature up to +150 °C (suitable for SiC / GaN applications).
• Low losses; ESR typically decreases with temperature.
• Ultra-low leakage currents due to material selection.
• No thermal runaway under specified conditions.

Applications
CeraLink capacitors are highly compact solutions for snubber networks, filters, flying capacitors and DC-links. Unlike conventional ceramic capacitors, CeraLink reaches maximum capacitance at the specified operating point (positive bias behaviour), which can increase proportionally with ripple voltage — ideal for SiC and GaN power stages.

Typical use cases

• Automotive: high-voltage xEV systems, auxiliary inverters (HV compressor/pump/heater), on-board chargers (OBC), DC/DC converters.
• Industry: motor drives, energy storage systems, power converters, solar inverters, UPS and isolated supplies.
• Power modules: snubber or DC-link capacitance within inverter power modules to improve efficiency and reduce system size/cost.

Portfolio
The portfolio offers LP (low profile), FA (flex assembly) and 2220 (high capacitance density) approaches based on PLZT with copper inner electrodes. Devices are specified for -40 °C to +150 °C and available in multiple voltage classes (examples: 500 V / 700 V / 900 V); terminations include standard and soft SMD options and lead-frame/ silver outer electrodes for LP/FA.

Special requirements (comparison table)
Design | MLCC class I | MLCC class II | CeraLink
Resonance capacitor, stable C | ✔ | x | x
T >125 °C | ✔ | Limited offer (X8R/custom) | ✔
V >630 V | ✔ | Limited offer | ✔
AC application | ✔ | ✔ | x

Capacitance behaviour / performance notes
CeraLink exhibits a capacitance peak at operating voltage and characteristic C–V curves. Its combination of high current handling and capacitance density can reduce part count versus MLCCs, enabling system miniaturization and improved cost/performance.

Characteristics / technical specifications

• Material: PLZT ceramic with copper inner electrodes; silver outer electrodes / silver-coated copper lead frame for LP and FA.
• Operating temperature range: -40 °C to +150 °C.
• Voltage classes (examples): devices shown at 350 V; portfolio includes 500 V, 700 V, 900 V (some designs support peak voltages ≈1300 V).
• Series: CeraLink LP (low profile), FA (flex assembly), 2220 (SMD optimized for capacitance density).
• Representative capacitance examples: 2220 – 0.47 µF @ 350 V; 2220 – 0.056 µF @ 900 V; FA series range ~0.5 µF up to 10 µF depending on voltage class; LP examples include 0.5 µF @ 700 V and 1 µF @ 500 V (see datasheets).
• Typical operating currents (examples at 105 °C RMS): consult datasheets (e.g., 2.3–5 A for some 2220 variants; 7–38 A for some FA variants).
• Optimal frequency region: ~100 kHz – 1 MHz; minimal ESR and low HF losses with copper electrodes.
• Qualification: AEC-Q200 based qualification.
• Soldering / mounting: SMD using standard MLCC reflow profiles; terminations: standard SMD, soft SMD, SMD with lead frame (LP/FA).
• Compliance: RoHS compatible.