KDK LAB - Film Capacitor

Pet vs PP 아래 표를 보면 PP 가 더 좋은 재료입니다

Pet 는 Mylar 로 알려저 있고 값이싸서 많이 쓰이고 있습니다.

한국서는 Pet병 이라는 말도 있는 것 같던데--

소리를 듣고 같다고 생각되면 구태여 비싼 PP 를 쓸 필요 없겠지요

남이 좋다 나쁘다를 믿지 말고 자기가 확인하는 것이 제일입니다

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Characteristics of plastic film materials for film capacitors
		Film material, abbreviated codes
Film characteristics		PET	PEN	PPS	PP
Relative permittivity at 1 kHz		3.3	3.0	3.0	2.2
Minimum film thickness (µm)		0.7…0.9	0.9…1.4	1.2	1.9…3.0
Moisture absorption (%)		low	0.4	0.05	<0.1
Dielectric strength (V/µm)		580	500 (?)	470	650
Commercial realized voltage proof (V/µm)		280	300	220	400
DC voltage range (V)		50—1000	16—250	16—100	40—2000
Capacitance range		100 pF—22 µF	100 pF—1 µF	100 pF—0.47 µF	100 pF—10 µF
Application temperature range (°C)		-55 — +125 /+150	-55 — +150	-55 — +150	-55 — +105
ΔC/C versus temperature range (%)		±5	±5	±1.5	±2.5
Dissipation factor (•10⁻⁴)
	at 1 kHz	50—200	42—80	2—15	0.5—5
	at 10 kHz	110—150	54—150	2.5—25	2—8
	at 100 kHz	170—300	120—300	12—60	2—25
	at 1 MHz	200—350	–	18—70	4—40
Time constant R_Iso•C (s)	at 25 °C	≥10000	≥10000	≥10000	≥100000
Time constant R_Iso•C (s)	at 85 °C	1.000	1.000	1.000	10.000
Dielectric absorption ( %)		0.2—0.5	1—1.2	0.05—0.1	0.01—0.1
Specific capaci

**Dielectric: general names, chemical names, abbreviations, and trade names**
Dielectric	Abbreviation	Trade name
Polypropylene	PP	Treofan
Polyester, Polyethylene terephthalate	PET	Hostaphan, Mylar®
Polyethylene naphthalate	PEN	Kaladex®
Polyphenylene sulfide	PPS	Torelina
Polytetrafluoroethylene	PTFE	Teflon
Polystyrene	PS	Styroflex
Polycarbonate	PC	Makrofol

Film Capacitor