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The Panasonic ECQ-E6224KF is a 0.22 µF (220 nF), ±10%, 630 VDC metallized polyester film capacitor with radial straight leads and 15 mm spacing. Panasonic’s product pages also identify it as ECQE6224KF, without the hyphen. The 630 V rating is DC—not a 630 VAC rating—and the part is not listed as a safety-certified X/Y capacitor or AEC-Q200 qualified. See the Panasonic product specification and ECQE(F) series catalog.
ECQ-E6224KF specifications
| Specification | Value |
|---|---|
| Manufacturer and series | Panasonic Industry, ECQE(F) DC-rated series |
| Part number | ECQ-E6224KF; also rendered by Panasonic as ECQE6224KF |
| Capacitance | 0.22 µF (220 nF, 220,000 pF) |
| Tolerance | ±10%; arithmetic limits are approximately 0.198–0.242 µF |
| Rated voltage | 630 VDC |
| Dielectric and construction | Metallized polyester (MPET), resin-dipped |
| Mounting and leads | Radial through-hole, straight leads |
| Body dimensions | 18.5 mm long × 9.0 mm wide × 16.5 mm high, as listed |
| Lead spacing | 15.0 mm |
| Temperature range | −40°C to +105°C; voltage derating applies above 85°C |
| Packaging | Bulk/bag; Panasonic lists a minimum packaging quantity of 100 |
| AEC-Q200 | Not based on AEC-Q200 |
| Safety mechanism | Not installed |
Values are from Panasonic’s product specification. Check its drawing for dimensional tolerances, lead diameter and board-clearance details before releasing a PCB footprint. DigiKey independently lists the part as a 0.22 µF, 630 VDC, ±10% radial film capacitor with 15 mm lead spacing and a −40°C to +105°C operating range (DigiKey listing).
What the part number and capacitance mean
ECQ-E6224KF is the hyphenated form commonly used by distributors; Panasonic’s regional product listing uses ECQE6224KF for the same KF configuration. The hyphen difference does not, by itself, indicate a different electrical or mechanical part.
The nominal 0.22 µF value is also written as 220 nF or 220,000 pF. With ±10% tolerance, the arithmetic range around nominal is about 198–242 nF. It is a non-polarized film capacitor, not an electrolytic capacitor, ceramic capacitor or surface-mount component.
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Voltage, temperature and circuit limits
630 VDC is not 630 VAC
The rated voltage is 630 VDC. Do not treat that figure as an AC RMS rating, an AC peak rating or permission to withstand arbitrary transients. Panasonic provides separate permissible-AC-voltage guidance for DC-rated film capacitors in its film-capacitor catalog; use that guidance for the relevant frequency and operating conditions.
Voltage derating above 85°C
Panasonic lists a −40°C to +105°C temperature range, while series documentation calls for voltage derating above 85°C. Thus, the maximum temperature does not imply that the full 630 VDC rating is available there. As an illustration of the catalog’s stated 1.25% per °C derating rate, operation 20°C above 85°C implies 25% derating; 630 V × 75% is approximately 472.5 V. This calculation is illustrative, not a substitute for the complete manufacturer conditions or an application reliability assessment.
Rank #2
- Panasonic FM Series
- Low Impedance (40 % to 70 % less than FC Series)
- Endurance : 105 °C 2000 h to 7000 h
- 100% Authentic Panasonic made P/N EEU-FM1H102
- 16 x 25mm Lead spacing 7.5mm(0.630" x 1.063" 0.295")
Energy and frequency calculations
At 630 VDC, the ideal stored energy is approximately 43.7 mJ, calculated as E = ½CV² using the nominal capacitance. A charged capacitor can still present a hazardous voltage; follow safe discharge and verification procedures, and account for energy elsewhere in the circuit.
For orientation, ideal capacitive reactance for 0.22 µF is approximately 14.5 kΩ at 50 Hz, 12.1 kΩ at 60 Hz, 723 Ω at 1 kHz and 72.3 Ω at 10 kHz. These calculated values do not establish allowable current, dissipation, frequency or voltage; consult the manufacturer’s technical information for those limits.
Rank #3
- Panasonic FM Series
- Low Impedance(40 % to 70 % less than FC Series)
- Endurance : 105 °C 2000 h to 7000 h
- 100% Authentic Panasonic made P/N EEU-FM1E221
- 8 x 11.5mm Lead spacing 5mm(0.315" x 0.512" 0.197")
Where it may fit—and where it does not
Depending on the circuit stresses, this general-purpose film capacitor may suit DC filtering or bypassing, signal coupling, timing networks, or snubber and pulse-related circuits. Capacitance and DC voltage alone do not prove suitability. Check frequency, ripple current, peak voltage, pulse repetition, dv/dt, dissipation, ambient temperature and transient conditions against the technical information and application requirements.
- Not a generic mains-safety capacitor: Panasonic lists no installed safety mechanism, and the specification does not establish X or Y safety approval. A line-to-line or line-to-earth position requiring safety certification calls for a capacitor certified for that safety class and application.
- Not an automotive-qualified part by default: Panasonic lists it as not based on AEC-Q200.
- Not an SMD part: it is a radial through-hole component.
- Not a universal 0.22 µF replacement: dielectric behavior, voltage, tolerance, pulse capability, mechanical fit and approvals all matter.
Dimensions and related lead-form variants
The KF version has straight leads on a 15 mm pitch and listed body dimensions of 18.5 × 9.0 × 16.5 mm. Panasonic also lists related 0.22 µF, 630 VDC family variants. Their headline electrical ratings do not make them automatic PCB or assembly drop-ins.
Rank #4
- Panasonic FM Series
- Low Impedance (40 % to 70 % less than FC Series)
- Endurance : 105 °C 2000 h to 7000 h
- 100% Authentic Panasonic made P/N EEU-FM1H221
- 10 x 16mm Lead spacing 5mm(0.394" x 0.689" 0.197")
| Variant | Lead configuration / pitch | Packaging |
|---|---|---|
| ECQE6224KF | Straight leads, 15 mm | Bulk |
| ECQE6224KFB | Inner-crimped leads, 10 mm | Bulk |
| ECQE6224KFZ | Short-cut leads, 15 mm | Bulk |
| ECQE6224RKF | Inner-crimped Style B leads, 7.5 mm | Taped/ammo |
Compare the exact drawing, lead geometry, body height and packaging with the intended assembly: KF, KFB, KFZ and RKF.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to evaluate a replacement
- Match 0.22 µF and confirm that ±10% tolerance is acceptable for the circuit.
- Require a voltage rating suitable for the actual DC voltage after temperature derating, transients and other applicable limits; a lower-rated capacitor is not acceptable just because its capacitance matches.
- Check dielectric, loss and stability requirements. Polyester and polypropylene have different characteristics; a polypropylene part may suit some low-loss, stability or pulse applications, but may be larger or costlier.
- Verify lead pitch, lead form, body dimensions, clearance and assembly method against the PCB and enclosure.
- Check ripple, peak current, dv/dt, frequency and pulse repetition against the substitute’s own datasheet.
- Confirm safety certification if the capacitor occupies a mains-safety position, and qualification requirements such as AEC-Q200 where applicable.
- Check lifecycle and supply independently; distributor inventory is not a guarantee of future availability.
A higher-voltage polyester capacitor may be electrically suitable but too large or differently spaced. A ceramic alternative can differ in capacitance stability, DC-bias behavior, voltage coefficient, microphonics and failure behavior. For an X/Y safety position, select a capacitor with the required safety classification rather than treating this general-purpose part as equivalent.
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- Panasonic FM Series
- Low Impedance (40 % to 70 % less than FC Series)
- Endurance : 105 °C 2000 h to 7000 h
- 100% Authentic Panasonic made within a year
- 5 x 11mm Lead spacing 5mm
Datasheet and purchasing
Use Panasonic’s official product page and regional specification page for manufacturer documentation and stock-check access. The DigiKey listing provides a distributor purchase page. Stock, lead times and prices change by date and region; confirm them at checkout and order the KF lead form if the board requires straight 15 mm-spaced leads.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
