New price-performance play, Murata’s PK/ PD series MLCC targets AI power rails

Edited by ad hoc news New Releases & Launches Desk. Reviewed before publication on 06/15/2026 at 8:54 PM ET. Details in the imprint.

Murata’s PK/PD series multilayer ceramic capacitors is coming into sharper focus as AI servers and electrified vehicles drive demand for robust power-rail components that can withstand high ripple currents in tight board spaces. The compact MLCC family targets DC-DC converter input and output smoothing, where low equivalent series resistance (ESR) and long-term reliability are critical in data centers and automotive control units. As cloud providers and carmakers redesign boards around higher current densities, PK/PD-class capacitors are positioned as a cost-efficient alternative to bulkier electrolytics in many rails.

What Murata’s PK/PD MLCCs are built to do on power rails

The PK/PD series belongs to Murata’s portfolio of high-capacitance, low-ESR MLCCs intended for use on the input and output of switching regulators, particularly in servers, base stations and automotive control modules. Devices in this class typically offer capacitance values in the tens to hundreds of microfarads range at voltage ratings common for 12 V, 24 V and point-of-load conversion stages, in compact SMD case sizes that help designers shrink power stages on dense PCBs. Murata highlights these parts for smoothing and decoupling duties, where their low impedance over a wide frequency range supports stable converter operation under fast load transients.

Murata and industry analysts note that AI data center build-outs are significantly tightening supply for popular MLCC types, especially those used on high-current power rails. According to recent coverage of the AI-driven MLCC market, delivery times for widely used capacitor grades have stretched to as long as 24 weeks, more than twice historical norms, as manufacturers including Murata run utilization rates around 95 percent in response to spiraling demand from GPUs and high-density memory modules according to a report in the South China Morning Post. In that context, PK/PD-type MLCCs are part of a broader push to supply power-stage components that keep pace with higher current, faster edge rates and stricter power integrity targets in AI and 5G infrastructure.

On the automotive side, Murata’s high-capacitance MLCC ranges, including PK/PD-class devices, are designed to meet AEC-Q200 requirements that qualify components for use in harsh in-vehicle environments such as engine compartments and battery management systems. These capacitors must tolerate significant temperature swings, vibration and mechanical stress while maintaining capacitance and insulation resistance within specified limits over their service life. For EV applications in particular, designers are shifting more of the bulk capacitance from aluminum electrolytics and polymer capacitors to MLCC arrays, trading some derating and DC bias sensitivity for improvements in size, reliability and high-frequency performance on high-voltage and low-voltage rails.

Murata has been investing heavily in additional MLCC capacity to support these trends, both by expanding facilities and by upgrading existing lines for higher output. Market commentary around the AI cycle indicates that the current upturn in MLCC demand is considered the strongest in the industry’s history, with some forecasts extending elevated utilization into the end of the decade as AI workloads, 5G deployments and automotive electrification intersect based on analysis cited by Futunn News. For Murata, PK/PD-type MLCCs sit squarely in this high-demand zone because they are used in volume across AI accelerators, storage systems, networking gear and vehicle control units.

For hardware engineers, one practical advantage of MLCCs such as the PK/PD series is the flexibility they offer in layout and thermal management compared with large can-type capacitors. Arrays of MLCCs can be distributed around hot components like processors and power stages to reduce loop inductance and improve transient response, while the ceramic construction offers favorable aging characteristics when the derating rules are observed. That said, designers must account for DC bias effects, temperature coefficients and potential piezoelectric noise in sensitive analog sections, balancing MLCC advantages against the need for mixed capacitor technologies in complex power trees.

Within Murata’s broader portfolio, high-capacitance MLCCs for power rails contribute a meaningful share of sales as the company remains the world’s largest MLCC supplier by volume. The group’s exposure to AI servers, smartphones, automotive electronics and industrial equipment ties PK/PD-class products directly to key growth verticals that management expects to support capacity utilization in coming years as outlined in Murata’s annual reports. Shares of Murata Manufacturing (JP3932000007) closed on the Tokyo Stock Exchange at JPY 3,322 on 06/14/2026.

This article was a.i.-assisted and editorially reviewed. Product information without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Trading involves risk up to and including the total loss of invested capital.