TDK Expands Ultra-Compact Snap-in Capacitor Series for AI Servers
TDK Corporation has expanded its B43645, B43657, B43658, B43659, B43660, and B43661 series of ultra-compact snap-in aluminum electrolytic capacitors. This expansion is specifically designed to address the demanding requirements of advanced AI server power supply units (PSUs) and high-performance switch-mode power supply (SMPS) applications.
A key enhancement in these series is the increase in rated DC voltages to 500 V. Coupled with their exceptionally compact form factors—featuring diameters from 22 mm to 35 mm and lengths between 25 mm and 100 mm—these capacitors deliver high voltage capability in a minimal footprint. This combination is crucial for achieving higher power densities, improved reliability, and greater design flexibility in modern power systems.
These characteristics are particularly vital for supporting the continuous, high-load operation prevalent in AI data centers, where efficiency and performance cannot be compromised. The ultra-compact CV design enables the creation of smaller, more efficient systems without sacrificing electrical or thermal performance, making them a key differentiator in high-performance power supply design.
Specifications
| Product Series | Function | Rated Voltage Range | Capacitance Range | Dimensions (D x L) | Max Ripple Current | Service Life | Compliance/Features |
|---|---|---|---|---|---|---|---|
| B43645, B43657, B43658, B43659, B43660, B43661 | Snap-in aluminum Electrolytic Capacitor | 400 V to 500 V | 80 µF to 2060 µF | 22-35 mm x 25-100 mm | Up to 5.39 A | Up to 5,000 h at +105 °C | RoHS-compliant, Vibration-tested |
Key Features
- Ultra-compact design with extremely high CV product.
- Rated DC voltage up to 500 V.
- Capacitance range from 80 µF to 2060 µF.
- High ripple current capability, up to 5.39 A.
- Long service life of up to 5,000 h at +105 °C.
- Diameters from 22 mm to 35 mm and lengths between 25 mm and 100 mm.
- Robust aluminum can construction with PET sleeve and integrated pressure relief.
- Secure snap-in pins (2 terminals standard, 3 terminals available for correct insertion).
- RoHS-compliant.
- Vibration-tested per IEC 60068-2-6.
- Supported by web-based AlCap Tool for accurate lifetime calculation under application-specific conditions.
Applications
- AI server power supply units (PSUs)
- Switch-mode power supplies (SMPS)
- Uninterruptible power supplies (UPS)
- Solar inverters
