This is a radial-leaded aluminum electrolytic capacitor rated for 22µF capacitance at 400V DC working voltage, housed in a compact 10×17mm can — a very common form factor used in switch-mode power supplies, LED drivers, ballast circuits, and general-purpose filtering in higher-voltage DC rails. This size/rating combination is widely available from multiple generic and branded manufacturers, and functionally equivalent parts are sold under Nichicon, Rubycon, Panasonic, and various Chinese OEM brands.

Parameter Value

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Capacitance 22 µF

Rated Voltage (DC) 400 V

Capacitance Tolerance ±20% (M)

Case Size 10mm diameter × 17mm height

Lead Spacing (Pitch) 5.0 mm

Max Operating Temp 85°C – 105°C

Rated Ripple Current ~150–200 mA @ 105°C, 100/120Hz

Max ESR ~1–2 Ω @ 100kHz, 20°C

Leakage Current ≤ 0.01CV or 3 µA (whichever is greater)

Dissipation Factor (tanδ) ≤ 0.15–0.20 @ 120Hz, 20°C

Endurance (Load Life) 1,000–2,000 hours @ rated temp/ripple

Polarity Polarized (long lead = +, short lead = −)

Mounting Through-Hole (THT), Radial

Applications

• SMPS (switch-mode power supply) output/input filtering

• LED driver circuits (400V-rail buck/boost stages)

• Ballast and lighting control circuits

• Snubber and bulk energy storage in higher-voltage DC power stages

• General-purpose high-voltage rail filtering in industrial/consumer electronics

Safety Cautions

• Polarity matters — reverse connection can cause the capacitor to vent, leak electrolyte, or fail catastrophically (bulge/explode).

• Never exceed rated voltage (400V) — even brief transients above this can permanently damage the dielectric.

• Observe correct ripple current limits; exceeding them causes internal heating and premature failure.

• Discharge before handling in circuits that may retain charge (400V rated caps can hold a lethal charge even after power-off).

• Store and operate within rated temperature range to avoid reduced lifespan or electrolyte dry-out.