680uF 450V Snap-in Aluminum Electrolytic Capacitor 35×50mm – For Audio

High-voltage 680µF (680MFD) 450VDC aluminum electrolytic capacitor in Ø35×50mm snap-in can. Polarized, 10mm lead spacing, ±20% tolerance. Built as a reservoir/filter cap for audio amplifier power supplies, DAC rails, tube amp B+ stages and general SMPS DC-link.

Specifications

• Capacitance: 680µF (marked 680MFD)
• Rated Voltage: 450V DC (derate to ~360V working typical)
• Type: Aluminum electrolytic, non-solid electrolyte
• Mounting: Snap-in (through-hole PCB, 2-pin / 4-pin option)
• Body Size: 35mm dia. × 50mm height
• Pin Pitch: 10mm (standard snap-in)
• Tolerance: ±20%
• Temp Rating: 85°C / 105°C versions available
• Lifetime: 2000h~5000h @ rated temp (series dependent)
• ESR: Low-impedance grade available
• Polarity: Polarized – observe “−” stripe / vent orientation

Audio & Power Use Cases

• Class AB / Class D amplifier main reservoir cap
• Linear power supply smoothing after rectifier
• Tube amplifier B+ DC filter
• DAC / preamp rail decoupling (bulk stage)
• SMPS input/output bulk, inverter DC-link, UPS

Why This Size

35×50mm with snap-in pins is the standard footprint for 600–1000µF @ 450V audio reservoirs. Matches common amplifier PCB layouts (Vishay MAL209327681E3, Nichicon LGG2W681MELC50 class). [1,10,11](@ref) Swap-in replacement for bulged originals in vintage receivers and DIY amp builds.

Selection Notes

• Voltage: 450V rated, do not run close to rail peak – keep ≥20% headroom.
• Audio upgrade: pick low-ESR / high-ripple series, not general-purpose GP.
• Bipolar/non-polar needed for signal path – this part is polarized, PSU only.
• Height check: 50mm can + bend radius, confirm chassis clearance before fit.

Condition

100% brand new, dry-stored, leads straight, no bulge/no leak. RoHS-compliant series on request.