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Home Products Capacitors Aluminum Electrolytic Capacitors 420MXH680MEFC35X45
420MXH680MEFC35X45
Part Number 420MXH680MEFC35X45
Manufacturer Rubycon
Description CAP ALUM 680UF 20% 420V SNAP
Quantity Available 8888 pcs new original in stock.
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Datasheets 420MXH680MEFC35X45.pdf
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Technical Information of 420MXH680MEFC35X45
Manufacturer Part Number 420MXH680MEFC35X45 Category Capacitors
Manufacturer Rubycon Description CAP ALUM 680UF 20% 420V SNAP
Package / Case Radial, Can - Snap-In Quantity Available 8888 pcs
Voltage - Rated 420 V Tolerance ±20%
Surface Mount Land Size - Size / Dimension 1.378" Dia (35.00mm)
Series MXH Ripple Current @ Low Frequency 2.29 A @ 120 Hz
Ripple Current @ High Frequency 3.206 A @ 10 kHz Ratings -
Polarization Polar Package / Case Radial, Can - Snap-In
Package Bulk Operating Temperature -25°C ~ 105°C
Mounting Type Through Hole Lifetime @ Temp. 2000 Hrs @ 105°C
Lead Spacing 0.394" (10.00mm) Height - Seated (Max) 1.850" (47.00mm)
ESR (Equivalent Series Resistance) - Capacitance 680 µF
Applications General Purpose  
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Frequently Asked Questions

  • What voltage rating considerations apply when using 420MXH680MEFC35X45 in a 380V DC power supply circuit? The 420V rating of 420MXH680MEFC35X45 allows operation with a safety margin for the 380V bus, accommodating switching transients that may peak at 410V without risking premature capacitor failure.
  • How does the 680 µF capacitance of 420MXH680MEFC35X45 affect the output ripple voltage in a full-wave rectifier circuit? With a capacitance of 680 µF at 420V, 420MXH680MEFC35X45 reduces ripple by a factor of approximately 1/(2 * f * R * C), where C equals 680 µF, enabling smoother DC output for sensitive loads in rectifier applications.
  • How can the ripple current of 420MXH680MEFC35X45 at 3.206 A @ 10 kHz be applied to determine suitability for a 500W inverter design? The 3.206 A ripple current rating at 10 kHz of 420MXH680MEFC35X45 supports power dissipation calculations in inverters, where losses remain manageable as long as the effective RMS current stays below the high-frequency threshold.
  • What temperature derating strategy is recommended for 420MXH680MEFC35X45 to maintain performance in ambient conditions of 90°C? For 420MXH680MEFC35X45 operating at 90°C ambient, derating the 420V rating by approximately 1.5% per °C above 40°C ensures the effective voltage stress stays within safe limits given the -25°C to 105°C range.
  • How does the 2000 Hrs @ 105°C lifetime rating of 420MXH680MEFC35X45 influence expected service life in a 24/7 operating server power supply? The 2000 Hrs @ 105°C of 420MXH680MEFC35X45 translates to roughly 87 days of continuous use at maximum temperature, requiring a safety factor of 3-5x derating or lower temperature operation to achieve multi-year reliability in server applications.
  • Why prefer the through-hole snap-in mounting of 420MXH680MEFC35X45 over SMD options for industrial control panels? The Radial, Can - Snap-In mounting of 420MXH680MEFC35X45 with 1.378" diameter and 1.850" height provides mechanical stability in vibration-prone industrial panels, unlike surface mount where reflow can introduce stresses.
  • What implications does the 0.394" lead spacing have for 420MXH680MEFC35X45 when designing custom mounting brackets? The 0.394" (10.00mm) lead spacing of 420MXH680MEFC35X45 dictates the hole pattern in mounting fixtures, ensuring alignment and preventing lead bending during installation.
  • How does the polarization requirement of 420MXH680MEFC35X45 affect wiring in DC busbar applications? Proper orientation of the positive and negative terminals in 420MXH680MEFC35X45 is critical in DC busbar circuits to avoid reverse voltage breakdown, given its Polar rating.
  • When comparing 420MXH680MEFC35X45 to the EET-HC2G681LA, what ripple current advantage does the former offer in 10 kHz filtering? In 10 kHz filtering scenarios, the 3.206 A rating of 420MXH680MEFC35X45 provides better high-frequency ripple handling than the EET-HC2G681LA, making it suitable for applications with faster switching edges.
  • How does the form factor of 420MXH680MEFC35X45 influence selection relative to the LGGW6681MELC45 in space-constrained designs? The 1.378" diameter by 1.850" height of 420MXH680MEFC35X45 offers higher capacitance per volume than the more compact LGGW6681MELC45 but demands larger panel cutouts, guiding trade-off decisions in compact consumer electronics.
  • What reliability considerations limit 420MXH680MEFC35X45 deployment in automotive environments despite its 2000 Hrs @ 105°C? Although 420MXH680MEFC35X45 achieves 2000 Hrs @ 105°C, its snap-in construction without hermetic sealing may compromise long-term performance in automotive applications exposed to moisture and thermal cycling beyond the general purpose ratings.
  • In replacement strategies for 420MXH680MEFC35X45 when sourcing the ECE-T2VA681EA becomes difficult, what key differences in lead design should be evaluated? When migrating from the ECE-T2VA681EA to 420MXH680MEFC35X45, differences in lead spacing and overall can size must be checked to ensure compatibility with existing through-hole footprints in the assembly.
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