Summary
every figure cited to the datasheet below- 0805 multilayer ceramic chip capacitor — 2.00 × 1.25 × 1.25 mm body (±0.15 mm), 0.50 mm termination bands; Ni inner electrodes, Cu termination, Ni/100% Sn Pb-free platingp.1
- 22 µF ±20%, rated 10 V — X5R (Class II) dielectric, code Ap.1
- X5R temperature characteristic: capacitance change within ±15% from −55 to +85 °Cp.2
- High-capacitance measurement condition: 120 Hz ±20% at 0.5±0.1 Vrms, after a 150 °C 1-hour heat treatment and 24±2 h restp.2
- Dissipation factor 0.1 max; insulation resistance 10,000 MΩ or 100 MΩ·µF, whichever is smallerp.2
- Withstands 250% of rated voltage with no dielectric or mechanical breakdown; high-temperature life test at 150% of rated voltage for 1,000 hp.2
- Class II dielectric — capacitance changes with applied DC and AC voltage; the product manual requires designing against the DC-bias characteristicp.11, p.14
- Reflow soldering rated to a 260±5 °C peak, 30 sp.2
- Embossed (plastic) carrier tape, 4 mm pitch — 2,000 pcs per 7-inch (φ178 mm) reel, cover-tape peel-off force 10–70 g·fp.1, p.4, p.7
CL21A226MPQNNNE packs 22 µF of X5R ceramic into an 0805, rated 10 V with a ±20% tolerancep.1 — a bulk-capacitance part for low-voltage rails, not a precision one. The wide tolerance is the first hint: this is capacitance by volume, and even the factory measures it differently — at 120 Hz and 0.5 Vrms rather than the 1 kHz / 1.0 Vrms used for the smaller values, after a 150 °C de-aging bake.p.2
The design numbers: X5R holds capacitance within ±15% from −55 to +85 °C, dissipation factor is 0.1 max, insulation resistance is 10,000 MΩ or 100 MΩ·µF whichever is smaller, and the dielectric is proofed at 250% of rated voltage.p.2
The number that bites is DC bias. As a high-capacitance Class II ceramic, its effective capacitance falls as the applied voltage climbs toward the 10 V rating — the product manual requires checking the bias characteristic at the working voltage rather than budgeting the label value.p.14 Reflow is rated 260±5 °C peak for 30 s,p.2 and it ships 2,000 to a 7-inch reel on 4 mm-pitch embossed tape.p.4
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Datasheet
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