Datasheet > W0428RE250

W0428RE250

更新时间： 2024-01-29 22:41:48

品牌	Logo	应用领域
力特 - LITTELFUSE		二极管
页数	文件大小	规格书
9页	465K
描述
Rectifier Diode,

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W0428RE250 技术参数

生命周期：	Active	Reach Compliance Code：	unknown
风险等级：	5.63	二极管类型：	RECTIFIER DIODE
Base Number Matches：	1

W0428RE250 数据手册

Rectifier Diode Type W0428##250-320

Notes on Ratings and Characteristics

1.0 Voltage Grade Table

V_RRM

2500

2800

3200

V_RSM

2600

2900

3300

V_R

Voltage Grade

DC V

1500

1650

1850

2.0 Extension of Voltage Grades

This report is applicable to other voltage grades when supply has been agreed by Sales/Production.

3.0 De-rating Factor

A blocking voltage de-rating factor of 0.13%/°C is applicable to this device for T_jbelow 25°C.

4.0 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.

5.0 Computer Modelling Parameters

5.1 Device Dissipation Calculations

T

R_th

V_{T 0} V_{T 0} 4 ff ²r W_AV

W_AV

I_AV

and:

2 ff ²r

T  T_{j max}T_K

Where V_T0=0.926V, r_T=0.739m

R_th= Supplementary thermal impedance, see table below and

ff = Form factor, see table below.

Supplementary Thermal Impedance

Conduction Angle

Square wave

Sine wave

6 phase (60°)

0.174

3 phase (120°)

0.153

½ wave (180°)

0.143

d.c.

0.130

0.172

0.153

0.149

Form Factors

Conduction Angle

Square wave

Sine wave

6 phase (60°)

2.449

3 phase (120°)

1.732

½ wave (180°)

1.414

d.c.

2.778

1.879

1.57

Data Sheet. Type W0428##250-320 Issue 2

Page 3 of 8

January, 2018

1 234 5 6 7...9

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