Product Overview

The CBB21B(H)/MPB series are box-type metallized polypropylene film capacitors designed for DC filtering and PFC circuits in applications such as switching power supplies, inverters, and electronic ballasts. These capacitors feature a non-inductive winding structure, excellent electrical performance, and are encapsulated in a flame-retardant plastic case and epoxy resin, meeting UL94V-0 standards. They offer good self-healing properties and are manufactured by Dongguan Chengxi Electronics Co., Ltd.

Product Attributes

• Brand: DGCX
• Product Series: MPB
• Model: CBB21B(H)/MPB
• Origin: Dongguan, Guangdong, China
• Construction: Box-type, non-inductive winding
• Encapsulation: Flame-retardant plastic case (PBT) and epoxy resin, UL94V-0
• Leads: Tinned copper wire or tinned copper-clad steel wire
• Environmental Compliance: RoHS, REACH, Halogen-free (optional)

Technical Specifications

General Electrical Characteristics

Product Structure and Materials

Marking Information (Example)

DGCX (Company Logo), MPB (Product Series), 685J (Capacitance and Tolerance), 400V (Rated Voltage)

Packaging Information

Inner box dimensions: 34.5 x 23.5 x 24.5 cm (L*W*H)
Outer box dimensions: 49 x 36 x 27 cm (L*W*H)
Packaging includes: Manufacturer's part number, quantity per bag, Lot No., moisture-proof and dust-proof PVC bags, RoHS environmental marking, and other customer-specified markings.

Storage Conditions

Temperature: Max 35C
Relative Humidity: Max 80%
Storage Time: Max 12 months from the production date indicated on the packaging bag.

Environmental Characteristics

• Compliant with RoHS requirements.
• Compliant with REACH requirements.
• Compliant with Halogen-free requirements (if specified).

Test Conditions

Unless otherwise specified, tests are conducted under standard atmospheric conditions: Environment Temperature: 15C to 35C, Relative Humidity: 25% to 75%. For critical test results, use Environment Temperature: 202C, Relative Humidity: 60% to 70%.

Usage Rules

• Do not exceed the upper category temperature limit.
• Avoid overload operation.
• Do not exceed the maximum pulse current.
• Avoid repeated squeezing at the lead root.
• Pay attention to the lead tip.
• Soldering: For wave soldering, TP 110C (120s), Ts 120C (45s). For hand soldering, iron tip temperature should not exceed 350C for more than 3 seconds. Not suitable for reflow soldering.

Current and Frequency Characteristics Curve

Note: Curves are typical values tested under sinusoidal voltage, ambient temperature 85C, and capacitor internal temperature rise T=10C. Applicable for DC filtering and DC module circuits with unidirectional ripple voltage. Not suitable for AC circuits. Contact technical personnel for inquiries.