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Film Capacitors (Electronic Equipment Use)

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Panasonic offers a large product lineup of film capacitors (Electronic Equipment Use), from radial lead-type products for mid/high voltage and high frequency, power supply noise suppressors (Safety Standard Approval), to surface mount-type products for low/mid-range voltage. The company also utilizes its advanced technologies to work on downsizing and enhancing safety and performance.

Topics

Radial lead type

Features

ラジアルリード形写真,径向引线型picture,Radial lead type picture

Radial lead-type film capacitors that achieve downsizing and high safety
(ECWFA, ECWFD, ECWFE)

Radial lead-type film capacitors for high voltage/frequency and Safety standard approved products have a fuse in each of the cells formed by separating vapor deposition films using Panasonic's original vapor deposition pattern technology. When a local breakdown occurs due to an overcurrent, etc., only the fuse in one cell is cut off, allowing the capacitor to maintain its overall function. The use of thin films has enabled downsizing in addition to high safety.

Construction of inner electrodes

Each cell has a fuse.

Construction of inner electrodes

Operation of fuse function

When a breakdown occurs, the fuse of the cell is cut off by a short circuit current. The cell of the broken part becomes an open circuit, allowing the capacitor to maintain its function.

Operation of fuse function

AC step-up breakdown comparison test

Panasonic products are unlikely to result in a short mode breakdown (Emitting smoke/catching fire).

AC step-up breakdown comparison test

Fuse Function Technology of Panasonic Film Capacitors | Panasonic

In this video, we’ll review the Fuse function Technology that is built into Panasonic Film Capacitors.

Application

Film capacitor for power supplies circuit

Application ① X capacitor ② Y capacitor ③ PFC/Smoothing ④ Snubber ⑤ Resonance
Panasonic Products Type ECQUA
275 VAC (max310V)
0.1 μF to 4.7 μF		 ECQUB
300VAC
0.001μF to 0.0068 μF 		ECWFA
ECWFD
250 to 630 VDC
0.047 μF to 6.8 μF		 ECWFA
ECWFD
250 to 630 VDC
0.047 μF to 6.8 μF		 ECWHA
800…1600 VDC
0.001 μF to 0.047 μF
Appearance ( Film )
NRNFD
ECQUA
Film (PP)
NRNFD
ECQUL
Film ( PP )		 ECWFA
Film (PP)		 ECWFA
Film (PP)		 ECWHA
Film (PP)
Feature ・High safety
(Built-in fuse function)
・Safety approval (X2)
・High humidity resistance (THB) 		・High safety
(Built-in fuse function)
・Safety approval (Y2/X1)
・High humidity resistance (THB) 		・High safety
(Built-in fuse function)
・High humidity resistance 		・High safety
(Built-in fuse function)
・High humidity resistance 		・High safety
・High voltage
・High ripple current

Film capacitors for solar power conditioner

Application ① Input filter ② Input filter ③ Y capacitor ④ Snubber ⑤ Smoothing ⑥ Output filter ⑦ X capacitor
Panasonic Products Type EZPE
450 to 1300 VDC
10 μF to 110 μF
[Industrial & Infrastructure Use]		 ECWFA
ECWFD
250 to 630 VDC
0.047 μF to 6.8 μF		 ECQUB
300VAC
0.001μF to 0.0068 μF 		ECWFA
ECWFD
250 to 630 VDC
0.047 μF to 6.8 μF		 EZPE
450 to 1300 VDC
10 μF to 110 μF
[Industrial & Infrastructure Use]		 EZPQ
250VAC
12 μF to 36 μF
[Industrial & Infrastructure Use]		 ECQUA
275 VAC (max310V)
0.1 μF to 4.7 μF
Appearance
( Film ) 		EZPE
Film (PP)		 ECWFA
Film (PP)
NRNFD
ECQUL
Film (PP)		 ECWFA
Film (PP)		 EZPE
Film (PP)		 EZPQ
Film (PP)
NRNFD
ECQUA
Film (PP)
Feature ・High safety
(Built-in fuse function)
・Long life(≧100kh)
[Vs. E_Cap.10kh] 		・High safety
(Built-in fuse function)
・High humidity resistance 		・High safety
(Built-in fuse function)
・Safety approval (Y2/X1)
・High humidity resistance (THB) 		・High safety
(Built-in fuse function)
・High humidity resistance 		・High safety
(Built-in fuse function)
・Long life(≧100kh)
[Vs. E_Cap.10kh] 		・High safety
(Built-in fuse function)
・High humidity resistance 		・High safety
(Built-in fuse function)
・Safety approval (X2)
・High humidity resistance (THB)

Surface mount type

Features

The ECHU (X) and ECWU (X) series solve chip standing problems during reflow with their improved electrode structure.

While parts with a small size and mass are likely to experience chip standing during reflow mounting, the ECHU(X) and ECWU(X) series are constructed with external electrodes with a large surface area to prevent this phenomenon.
The chip standing failure rate has dropped significantly.

  • ECHU(X) series

  • ECHU(X) series image

  • Conventional product [ECHU(B) series]

  • Conventional product [ECHU(B) series] image

The ECHU (X) and ECWU (X) series guarantee THB 500 h even without resin coating.

The adoption of new vapor deposition technologies for the ECHU(X) and ECWU(X) series has significantly improved the adhesive force of their inner electrodes to the film (aluminum vapor deposition film), thereby suppressing the oxidation deterioration of the inner electrodes. This has allowed these series, although uncoated, to achieve a THB-based guarantee (85ºC, 85% RH, WV, 500 h)

Application

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