EEETK1E221UP - 220µF 25V SMD Aluminum Electrolytic | Panasonic
Teilenummer: EEETK1E221UP ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.56 | $0,56 |
| 10 | $0.48 | $4,80 |
| 100 | $0.36 | $36,00 |
| 500 | $0.31 | $155,00 |
| 1.000 | $0.26 | $260,00 |
| 3.000 | $0.22 | $660,00 |
EEETK1E221UP Übersicht
An aluminum electrolytic capacitor is a polarized energy-storage device in which a formed aluminum oxide layer acts as the dielectric and an ion-conducting electrolyte serves as the cathode. Compared with ceramic capacitors, aluminum electrolytic parts offer much higher capacitance per unit volume and superior energy storage, at the cost of higher equivalent series resistance (ESR), shorter operational life, and polarity sensitivity. EEETK1E221UP belongs to the broader aluminum electrolytic > surface-mount > TK-series taxonomy, optimized for reflow-solder mounting on dense PCB assemblies.
Key specifications include ±20 % capacitance tolerance, 25 V DC rated voltage, 197 mA ripple current rating at 100 kHz and 125 °C, and an operating temperature range that supports automotive and industrial environments. The TK-series construction uses a vertical SMD can with standard 8 mm diameter land pattern, enabling drop-in replacement compatibility across the TK-series 220 µF / 25 V family.
Typical applications include bulk decoupling at switching regulator outputs, local energy storage for 12 V intermediate bus converters, point-of-load bypass for industrial PLC controllers, and output filtering on DC-DC converter secondary stages. The 25 V rating provides adequate headroom for 12 V automotive and 24 V industrial nominal rails after accounting for transient overshoot.
When designing with this part, place it on a copper land pattern sized for the 8 mm can with sufficient clearance for the pressure-relief vent. Verify that ripple current at the actual operating temperature does not exceed the 197 mA rating after frequency and temperature derating. The TK-series is supplied on tape-and-reel and is suitable for automated reflow soldering.
This page synthesizes distributor pricing tiers, drop-in alternatives from the same TK family and Nichicon UCZ-series equivalents, and practical design notes not consolidated on the manufacturer product page. Source data was retrieved from DigiKey, Mouser, LCSC and the official Panasonic product page on 2026-10-07.
Drop-in-Alternativen für EEETK1E221UP – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
EEE-TK1E221UP
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
EEE-TC1E221UP
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
EEE-FK1E221P
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
UCZ1E221MCL6GS
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
EEE1EA221P
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
EMZA250ARA221MHA0G
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
EEETK1E221UP Grenzwerte & elektrische Eigenschaften
| Capacitance | 220 µF |
| Capacitance Tolerance | ±20 % |
| Rated Voltage (DC) | 25 V |
| Ripple Current @ 100 kHz, 125 °C | 197 mA |
| Impedance @ 100 kHz (max) | 300 mΩ |
| Betriebstemperaturbereich | -40 °C to +125 °C |
| Endurance (Useful Life) | 3000 hours at 125 °C |
| Gehäuse / Bauform | Radial Can - SMD, D8 x L10.2 mm |
| Montageart | Surface Mount (Reflow) |
| Series | TK |
| Dielectric / Construction | Aluminum Electrolytic, Polarized |
| Land Pattern Diameter | 8 mm (D8) |
| RoHS-Status | Compliant |
| Lead-Free Reflow Solderable | Yes |
| Tape and Reel Packaging | Yes |
EEETK1E221UP Pin-Konfiguration
| Pin 1 | Anode (+) — Positive terminal; connects to higher-voltage rail |
| Pin 2 | Cathode (-) — Negative terminal; marked with stripe on can body, connects to ground |
Typische Anwendungen
EEETK1E221UP ist geeignet für 6 Anwendungs: Switching Regulator Output Bulk Capacitor, 12 V Automotive Bus Decoupling, Industrial 24 V PLC Power Filtering, DC-DC Converter Secondary Output Filter, Audio Amplifier Power Supply Decoupling, LED Driver Output Smoothing.
Switching Regulator Output Bulk Capacitor
The EEETK1E221UP's 220 µF / 25 V rating and 197 mA ripple current capability at 100 kHz make it well-suited as a bulk output capacitor on 5 V-12 V switching regulators. Placed directly at the SW node output inductor, it absorbs switching ripple and provides hold-up energy during load transients. The 300 mΩ impedance at 100 kHz attenuates high-frequency ripple from the regulator's switching action, while the 25 V rating provides 2x safety margin above a 12 V output rail under transient overshoot. Compared to a multilayer ceramic of equal capacitance, the EEETK1E221UP costs a fraction of the price at the trade-off of larger footprint and limited lifetime at high temperature.
Empfohlen
12 V Automotive Bus Decoupling
The EEETK1E221UP's 25 V rating and -40 °C to +125 °C operating range make it an effective decoupling capacitor on 12 V automotive power rails. Mounted close to IC supply pins on body-control modules, instrument clusters and infotainment boards, it suppresses voltage transients caused by load-dump events and inductive kickback from motors and solenoids. The 220 µF capacitance buffers the 12 V rail during cranking pulses when battery voltage can sag below 6 V for tens of milliseconds, allowing downstream regulators to maintain regulation. AEC-Q100 qualification is not implied - for safety-critical ECUs use a qualified part - but the 125 °C endurance matches typical under-hood thermal environments.
Empfohlen
Industrial 24 V PLC Power Filtering
On industrial PLC and factory-automation boards, the EEETK1E221UP serves as a primary bulk filter on 24 V nominal rails after bridge rectification and bulk reservoir stages. Its 25 V rating tolerates rectified 24 V rectified-DC plus 10-15 % transient overshoot, while the 220 µF capacitance smooths the 100 Hz / 120 Hz ripple component from single-phase rectification. The 8 mm SMD can with 10.2 mm height fits typical PLC daughter-card form factors, and the 3000-hour @ 125 °C endurance supports continuous-operation industrial environments. Compared to a through-hole electrolytic of equivalent rating, the SMD form factor enables automated pick-and-place assembly and lower PCB cost.
Empfohlen
DC-DC Converter Secondary Output Filter
The EEETK1E221UP is commonly placed on the secondary (output) side of isolated DC-DC converters and POL modules to filter switching ripple and provide transient energy storage. With 197 mA ripple rating at 100 kHz, it can absorb the full ripple current from a 5 V / 4 A POL converter operating at 500 kHz when the second-stage L-C filter handles the high-frequency component. The 220 µF / 25 V rating covers 5 V, 12 V and 15 V secondary rails with adequate transient margin. Compared to polymer aluminum or specialty low-ESR capacitors, the standard TK-series offers acceptable performance at substantially lower cost for general-purpose industrial and consumer designs.
Empfohlen
Audio Amplifier Power Supply Decoupling
In Class-D and Class-AB audio amplifiers, the EEETK1E221UP serves as a local bulk reservoir on the amplifier's main power rail, smoothing rectifier ripple and supplying instantaneous current during loud signal peaks. The 220 µF capacitance delivers short bursts of energy that exceed the average current draw, while the 25 V rating supports typical ±15 V or 24 V audio rails. The TK-series 3000-hour @ 125 °C endurance is adequate for consumer audio chassis where the amplifier runs below 85 °C ambient. For low-noise microphone preamp circuits a low-ESR film or polymer cap may be preferable, but for power-amp rails the EEETK1E221UP is cost-effective.
Empfohlen
LED Driver Output Smoothing
In constant-current LED drivers, the EEETK1E221UP smooths the rectified DC output after the switching converter, providing a stable voltage source for the current-sense resistor and LED string. The 220 µF / 25 V rating covers 12 V and 24 V LED strip configurations up to ~4 W per channel. The 197 mA ripple rating handles the converter's switching ripple without overheating the capacitor, and the 125 °C rating supports enclosed LED fixture thermal environments. Compared to ceramic-only LED drivers, the electrolytic's higher bulk capacitance provides better PWM dimming transient response and reduces visible flicker at low dimming levels.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für EEETK1E221UP – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | EEE-TK1E221UP | EEE-TC1E221UP | UCZ1E221MCL6GS | EMZA250ARA221MHA0G |
|---|---|---|---|---|---|
| Brand | Panasonic | Panasonic | Panasonic | Nichicon | Nippon Chemi-Con |
| Package | Radial Can SMD, D8xL10.2 mm | Radial Can SMD, D8xL10.2 mm - same | Radial Can SMD, D8xL10.2 mm - same | Radial Can SMD, D8xL10.2 mm - same | Radial Can SMD, D8xL10.2 mm - same |
| Capacitance | 220 µF | 220 µF | 220 µF | 220 µF | 220 µF |
| Rated Voltage | 25 V | 25 V | 25 V | 25 V | 25 V |
| Capacitance Tolerance | ±20 % | ±20 % | ±20 % | ±20 % | ±20 % |
| Series | TK (Panasonic) | TK (Panasonic) | TC (Panasonic) | UCZ (Nichicon) | MZA (Nippon Chemi-Con) |
Wichtigste Unterscheidungsmerkmale
- Higher 125 °C endurance rating than Nichicon UCZ series (vs. UCZ1E221MCL6GS)
- Lower impedance envelope than Panasonic TC series at 100 kHz (vs. EEE-TC1E221UP)
- Surface-mount form factor compatible with automated assembly (vs. EEE1EA221P (radial-leaded))
- RoHS-compliant lead-free reflow-solderable construction (vs. EMZA250ARA221MHA0G)
Designhinweise
Use a copper land pattern sized for an 8 mm SMD can with a clearance of at least 0.5 mm around the can body to accommodate the pressure-relief vent on the top deck. Place the EEETK1E221UP as close as physically possible to the switching regulator's output inductor to minimize high-frequency loop inductance. Avoid placing the capacitor under tall components that trap heat, since aluminum electrolytics derate lifetime rapidly with temperature rise above 105 °C.
Estimated: at full 197 mA ripple current and ambient 85 °C, the EEETK1E221UP's self-heating typically adds 5-10 °C to the hot-spot, reaching the 125 °C upper rating only in enclosed industrial environments. For every 10 °C reduction in operating temperature below 125 °C the useful life approximately doubles, so reducing the ripple current to 100 mA via additional filtering can extend field life by 4x or more. Always derate ripple current at lower frequencies using the TK-series datasheet curves.
Do not reverse-polarize the EEETK1E221UP - reversed DC voltage causes the dielectric oxide layer to break down, leading to high leakage current, overheating, and catastrophic failure with pressure-vent rupture. Do not exceed 25 V DC continuous voltage; brief transients up to 30 V are tolerated per the Panasonic datasheet but sustained overvoltage dramatically shortens life. Do not place the part near heat sources exceeding 125 °C without derating, and do not use it on circuits where AC ripple exceeds 197 mA at 100 kHz without active cooling.
When using the EEETK1E221UP as a bulk output capacitor for a switching regulator, pair it with a 10-22 µF MLCC placed within 5 mm of the regulator IC to absorb the high-frequency switching edge. The aluminum electrolytic handles the 100 kHz-to-MHz bulk energy storage, while the ceramic provides low-impedance decoupling above 1 MHz. Do not rely on the EEETK1E221UP alone for high-frequency decoupling - its 300 mΩ impedance at 100 kHz means its effectiveness drops sharply above 1 MHz.
Compliance-Informationen
RoHS and REACH compliant per Panasonic TK-series datasheet. Not AEC-Q100 qualified; not recommended for safety-critical automotive ECUs without separate qualification. Lead-free reflow-solderable construction confirmed.
