Datasheet > M0336S/RA140

M0336S/RA140

更新时间： 2024-01-28 05:31:49

品牌	Logo	应用领域
力特 - LITTELFUSE		二极管
页数	文件大小	规格书
11页	882K
描述
Rectifier Diode,

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技术参数
数据手册

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M0336S/RA140 技术参数

生命周期：	Active	Reach Compliance Code：	compliant
风险等级：	5.64	二极管类型：	RECTIFIER DIODE
Base Number Matches：	1

M0336S/RA140 数据手册

Soft Recovery Diode Types M0336S/RA120 to M0336S/RA140

5.0 Reverse Recovery Loss

The following procedure is recommended for use where it is necessary to include reverse recovery loss.

From waveforms of recovery current obtained from a high frequency shunt (see Note 1) and reverse

voltage present during recovery, an instantaneous reverse recovery loss waveform must be constructed.

Let the area under this waveform be E joules per pulse. A new sink temperature can then be evaluated

from:

T_SINKT_{J (MAX )} E 

Where k = 0.2314 (°C/W)/s



k  f R_thJK



E = Area under reverse loss waveform per pulse in joules (W.s.)

f = Rated frequency in Hz at the original sink temperature.

R_thJK= d.c. thermal resistance (°C/W)

The total dissipation is now given by:

W W_(original) E f

(tot)

NOTE 1 - Reverse Recovery Loss by Measurement

This device has a low reverse recovered charge and peak reverse recovery current. When measuring the

charge, care must be taken to ensure that:

(a) AC coupled devices such as current transformers are not affected by prior passage of high

amplitude forward current.

(b) A suitable, polarised, clipping circuit must be connected to the input of the measuring oscilloscope

to avoid overloading the internal amplifiers by the relatively high amplitude forward current signal.

damped snubber, connected across diode anode to cathode. The formula used for the calculation of this

snubber is shown below:

V_r

C_S

R² 4

Where: V_r= Commutating source voltage

C_S= Snubber capacitance

R = Snubber resistance

6.0 Snubber Components

When selecting snubber components, care must be taken not to use excessively large values of snubber

capacitor or excessively small values of snubber resistor. Such excessive component values may lead to

device damage due to the large resultant values of snubber discharge current. If required, please consult

the factory for assistance.

Data Sheet. Types M0336S/RA120 to M0336S/RA140 Issue 2

Page 4 of 11

October 2014

1 2 345 6 7...11

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