What is the difference between the 680uF and 1800uF 100V versions?

The 680uF (Ø22×30mm) is a smaller can for moderate bulk storage or decoupling. The 1800uF (Ø30×25mm) provides ~2.6× more capacitance in a wider, shorter body — better for high-current ripple filtering where board height is limited. Both share 10mm pin pitch but have different diameters, so PCB hole patterns differ.

Can I replace a 100V capacitor with a higher voltage rating?

Yes, using 160V or 200V in place of 100V is electrically safe and gives more headroom. However, the physical size will be larger and may not fit the original footprint. Always verify diameter and height clearance.

What are these 100V capacitors typically used for?

100V snap-in electrolytics are common in audio amplifier power supplies (±50V to ±80V rails), DC-DC converter outputs, motor drive bus filters, and industrial control power stages. The 680uF suits preamp/regulator stages; 1800uF suits high-current amplifier main rails.

1 4

DIYMars

680uF 1800uF 100V Snap-in Electrolytic Capacitor 22×30 30×25mm

$3.49 USD

~~$9.99 USD~~ $3.49 USD

Sale Sold out

Shipping calculated at checkout.

Value 680 uF （22*30mm） 1800 uF（30*25mm）

100V Aluminum Electrolytic Capacitor – 680uF 22×30mm / 1800uF 30×25mm Snap-in

100% brand new polarized aluminum electrolytic capacitors, snap-in mounting, rated 100V DC. Two capacitance options: 680µF (Ø22×30mm) and 1800µF (Ø30×25mm). Both feature low ESR, 105°C temperature rating, and standard 10mm pin pitch. Designed for audio amplifiers, SMPS, motor drives, and industrial power supplies.

Model Comparison

Parameter	680uF 100V	1800uF 100V
Capacitance	680µF (680MFD)	1800µF (1800MFD)
Voltage	100V DC (both)
Case Size	Ø22×30mm	Ø30×25mm
Body Diameter	22mm	30mm
Height	30mm	25mm
Pin Pitch	10mm (both)
Mounting	Snap-in, 2-pin
Temp Rating	105°C (85°C available)
ESR	Low-impedance grade
Polarity	Polarized – negative stripe marked

Selection Guide

680uF 100V (Ø22×30mm): Narrower can, taller. For preamp power rails, regulator input/output, moderate ripple filtering where board width is tight.
1800uF 100V (Ø30×25mm): Wider, shorter can. For high-current amplifier main supply, DC motor drive bus, where maximum bulk capacitance is needed and height clearance is limited.
Both: 10mm pitch = compatible PCB hole spacing, but diameters differ → verify hole-to-hole clearance on board.

Typical Applications

Audio amplifier power supply: ±50V to ±80V dual-rail, main filter or regulator stage
SMPS output filter: Post-rectifier bulk storage for 48V/60V/80V rails
Motor drive / servo: DC bus smoothing for brushed/brushless controllers
Industrial control: PLC power module, relay driver supply
Vintage audio repair: Replace aged caps in receiver/amp power supply

Cross-reference

Nichicon: GU / GL series 100V snap-in
Rubycon: USG / CXW series 100V compact
Chemi-Con: KMR / KMH series 100V
EPCOS: B43501 / B43644 100V snap-in
CDE: 380LQ / 383LQ 100V equivalents

Installation Notes

Verify PCB hole diameter and spacing: 10mm pitch confirmed, but Ø22mm vs Ø30mm need different clearance radii.
Observe polarity: negative stripe aligns with PCB "−" marking.
Do not force into mismatched holes — leads may crack seal.
Soldering: ≤260°C, ≤10 seconds per pin.
Allow ≥3mm vent clearance above can top.