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TDK EPCOS B43641A9687M057 B43641 Series Ultra Compact Snap-in Capacitor, 680µF, 400VDC

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Overview: The TDK EPCOS B43641A9687M057 is an ultra-compact, long-life aluminum electrolytic capacitor from the B43641 series, designed for high-density power electronics. With a 680µF capacitance and a 400VDC voltage rating, it delivers an extremely high CV product in a minimal footprint. Featuring snap-in terminals with a PET insulation sleeve, this capacitor is engineered for high reliability, high ripple current capability, and operation up to 105°C, making it ideal for power supplies, frequency converters, and UPS systems where space and performance are critical.

Key Features:

  • Ultra-Compact Design: Extremely high CV product for space-constrained applications
  • Long-Life Grade: >2000 hours useful life at 105°C with rated ripple current
  • High Ripple Current Capability: Optimized for demanding power circuits
  • Snap-in Terminals (4.5mm short): Secure PCB mounting with PET insulation sleeve
  • High-Temperature Operation: Rated for up to 105°C
  • RoHS-compatible and passes needle flame test (IEC 60695-11-5)
  • Designed for power supplies, frequency converters, UPS, and solar inverters
Product ID / Ordering Code B43641A9687M057
Series B43641 (Ultra Compact, 105°C)
Capacitance (CR) 680 µF
Rated Voltage (VR) 400 VDC
Capacitance Tolerance ±20% (M)
Case Dimensions (d x l) 30 mm x 45 mm
Typical ESR @ 100 Hz, 20°C 150 mΩ
Typical ESR @ 300 Hz, 60°C 50 mΩ
Max. Impedance Z @ 10 kHz, 20°C 220 mΩ
Max. Ripple Current IAC,max @ 100 Hz, 85°C 4.52 A
Rated Ripple Current IAC,R @ 100 Hz, 105°C 2.26 A
Useful Life @ 105°C, VR, IAC,R > 2000 h
Operating Temperature Range -40°C to +105°C (IEC 25/105/56)
Terminal Style Snap-in, short terminals (4.5 mm)
Insulation PET sleeve
Dissipation Factor (tan δ @ 120 Hz, 20°C) ≤ 0.20
Self-Inductance (ESL) Approx. 20 nH
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