CBB21B-Box Type Film Capacitor 250V

Made of metallized polypropylene film, it has low loss, small size, small internal temperature rise, and some small capacity can be produced by series film, with high pressure resistance. Plastic shell packaging, flame retardant liquid epoxy potting, good reliability, and extremely small appearance error.

Product Introduction

Suitable for various circuits requiring small size, low loss, high capacity and high precision

Features

Metallized polypropylene film, small inherent temperature rise, high voltage resistance.
Non-inductive metal structure, identical appearance.
Box type by liquid flame retardant, epoxy potting, good insulation performance.
Moisture-proof, flame retardant.
Low dissipation factor.
Good self-healing property, good stability and reliability.

SPECIFICATIONS
Climatic Category	40/085/21
Rated Voltage	63V, 100V, 250V, 400V, 630V, 1000V
Capacitance Range	0.0010Μf ~0.15μF
Capacitance Tolerance	±5%(J), ±10%(K)
Voltage Proof	1.6U_R
Insulation resistance	C≤0.33μF≥3000MΩ (20℃, 1min) C>0.33μF≥5000S (20℃, 1min)
Tangent of loss angle	≤0.008 % (20℃, 1KHZ)

DRAWING: (mm)

Advantage

Fully automated production line: Integration of intelligent equipment (e.g. AI vision inspection) to improve efficiency and reduce human error
Vertical integration capability: independent control of core processes such as thin film coating, slitting and winding to reduce supply chain risks.
Strict quality control: IATF 16949 automotive grade certification, full inspection of voltage resistance, ESR, and life span for each batch of products.
Vertical integration capability: independent control of core processes such as thin film coating, slitting and winding to reduce supply chain risks.
Strict quality control: IATF 16949 automotive grade certification, full inspection of voltage resistance, ESR, and life span for each batch of products.

Application Scenario

DC/DC converter (high voltage isolation capacitors)
Electric drive systems (EMC filtering to suppress radiation)
Autopilot Sensors (Radar Power Denoising)
In-vehicle infotainment systems (audio coupling capacitors)
48V light hybrid system (start-stop energy recovery buffer)
High-speed rail traction converter (high-frequency resonance absorption)

FAQ

Q: What are the capacity error ranges?

A: Commonly ±5% (J), ±10% (K), ±20% (M), some precision capacitors up to ±1%.

Q: What is the operating temperature range of film capacitors?

A: -40°C to +105°C (conventional), special models can support -55°C to +125°C.

Q: How does frequency affect film capacitors?

A: Losses increase at high frequencies, so it is necessary to choose materials with good high frequency characteristics (e.g. PP or PPS).

Q: What is the angular tangent of loss (tanδ)?

A: The smaller the tangent of the loss angle, the higher the efficiency of the capacitor and the lower the heat generation.

ZZEC Corporate Profile

Was established in 2007, the company is located in Yue yang city of Hunan province Yue yang county Bai Xiang town industrial zone, the enterprise from the beginning of entrepreneurship, "the spirit of customer first, forge ahead" spirit, focus on satisfy clients' demand for miniaturization, from at home and abroad to introduce advanced machines, to form a number of automated production line, at the same time subminiature automatic assembling machine imported from Italy, Specializing in the production of MINI BOX capacitor (super small BOX potting capacitor) and super small size, high precision series capacitor. To achieve annual shipments of about 2 billion film capacitors. Product quality is the survival foundation of the enterprise, relying on ISO9001 quality system, we use high-quality raw materials and high reliability of the process, thick accumulation to provide more than 300 agents and 1500 final customers with stable and reliable products and customized services. Step by step to develop into an influential enterprise in the industry