Metalized film capacitor for power supply application (DMJ-MC)

Short Description:

Power electronic film capacitors DMJ-MC series

Polypropylene film capacitors can qualify for high-class applications.

1. Very low dissipation factors (tan δ)

2. high quality factors (Q)

3. low inductance values (ESL)

4. No microphonics compared with ceramic capacitors

5. Metallized construction has self-healing properties

6. High rated voltages

7. High ripple current withstand

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Technical data

Operating temperature range	Max.Operating temperature: +85℃ Upper category temperature:+70℃ Lower category temperature:-40℃
capacitance range	50μF～4000μF
Rated voltage	450V.DC～4000V.DC
Capacitance tolorance	±5%(J);±10%(K)
Withstand voltage	Vt-t	1.5Un DC/60S
	Vt-c	1000+2×Un/√2 (V.AC) 60S(min3000 V.AC)
Over Voltage	1.1Un(30% of on-load-dur)
	1.15Un(30min/day)
	1.2Un(5min/day)
	1.3Un(1min/day)
	1.5Un(100ms every time,1000times during the lifetime)
Dissipation factor	tgδ≤0.003 f=100Hz
	tgδ0≤0.0002
Insulation resistance	Rs*C≥10000S (at20℃ 100V.DC 60s)
Flame retardation	UL94V-0
Maximum altitude	3500m
	custom design is necessary when the installation altitude is above 3500m
Life expectancy	100000h(Un; Θhotspot≤70 °C)
Reference standard	IEC61071 ;GB/T17702;

Our strengths

1. Custom design service according to a specific application;

2. CRE experienced technical team to support our customers with the most professional solution;

3. 24 hours online service;

4. Datasheet, diagrams, successful projects are available.

Feature

The scope of application for DC capacitors is similarly diverse. Smoothing capacitors are used to reduce the AC component of fluctuating DC voltage (such as in power supplies for industrial application).

Our film capacitors are able to absorb and release very high currents within short periods, the peak values of currents being substantially greater than the RMS values.

Surge (pulse) discharge capacitors are also capable of supplying or absorbing extreme short-duration current surges. They are usually operated in discharge applications with non-reversing voltages, and at low repetition frequencies, such as in laser technology.

Application

1. High voltage testing equipment;
2. DC controllers;
3. Measurement and control technology;
4. Energy storage in intermediate DC circuits;
5. transistor and thyristor power converters;