ZS4730A datasheet, PDF - EEWORLD Datasheet

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ZS4730A: DescriptionSurface Mount Zener Diodes; File Size307KB，3 Pages; ManufacturerWeitron Technology; Websitehttp://weitron.com.tw/

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ZS4730A Overview

Surface Mount Zener Diodes

ZS4730A Preview

ZS4728A Thru ZS4753A

Surface Mount Zener Diodes

P b

Lead(Pb)-Free

Features

*1W Power Dissipation

*For Surface Mounted Applications

*Low zener Impedance

*Low Regulation Factor

*Zener Breakdown Voltage Range 3.3V to 36V

Mechanical Data

*Case : SMA-1

*Terminals : Solderable per MIL-STD-202,Method 208

*Polarity : Color Band Denotes Cathode

*Marking : Marking Code(See Table on Page 2)

*Mounting Position : Any

*Weight : 0.05 grams

SURFACE MOUNT

ZENER DIODES

1.0 WATTS

SMA-1

SMA-1 Outline Dimension

unit:mm

SMA-1

Dim

Min

2.40

4.40

0.30

3.80

1.00

1.50

Max

2.80

4.80

0.30

4.20

1.00

1.70

WEITRON

http://www.weitron.com.tw

1/3

03-May-05

ZS4728A Thru ZS4753A

Maximum Ratings

(TA=25 C Unless Otherwise Noted)

Symbol

Characteristics

Power Dissipation T

=55 C

Maximun junction Temperature

Storage Temperature Range

STG

Value

1.0

150

-55 to +150

Unit

ELECTRICAL CHARACTERISTICS

(T A =25 C Unless Otherwise Noted VF=1.2V MAX, IF = 200mA for all types)

Device

ZS4728A

ZS4729A

ZS4730A

ZS4731A

ZS4732A

ZS4733A

ZS4734A

ZS4735A

ZS4736A

ZS4737A

ZS4738A

ZS4739A

ZS4740A

ZS4741A

ZS4742A

ZS4743A

ZS4744A

ZS4745A

ZS4746A

ZS4747A

ZS4748A

ZS4749A

ZS4750A

ZS4751A

ZS4752A

ZS4753A

Device

Marking

Z3V3

Z3V6

Z3V9

Z4V3

Z4V7

Z5V1

Z5V6

Z6V2

Z6V8

Z7V5

Z8V2

Z9V1

Z10

Z11

Z12

Z13

Z15

Z16

Z18

Z20

Z22

Z24

Z27

Z30

Z33

Z36

Zener Voltage

VZ(Nom)@I

Volts

3.3

3.6

3.9

4.3

4.7

5.1

5.6

6.2

6.8

7.5

8.2

9.1

Zener Impedance

Ω

3.5

4.5

Leakage Current Surge Current

=25ºC

15.5

12.5

11.5

10.5

9.5

8.5

7.5

7.0

Ω

400

500

550

600

700

750

1000

0.5

0.25

µA

100

Volts

7.6

8.4

9.1

9.9

11.4

12.2

13.7

15.2

16.7

18.2

20.6

22.8

25.1

27.4

1380

1260

1190

1070

970

890

810

730

660

605

550

500

454

414

380

344

304

285

250

225

205

190

170

150

135

125

NOTE: 1. Based on dc-Measurement at Thermal Equilibrium.

2. Surge current is a non-repetitive, 8.3ms pulse width square wave or equivalent sine-wave superimposed on IZT per JEDEC method

3. SUFFIX “A” FOR ± 5%

http:

www.weitron.com.tw

WEITRON

2/3

03-May-05

ZS4728A Thru ZS4753A

Typical Characteristics

, TEMPERATURE COEFFICIENT

( mV/

℃

)

+12

+10

-2

-4

11 12

RANGE

＠I

, TEMPERATURE COEFFICIENT

( mV/

℃

)

100

, ZENER VOLTAGE (VOLTS)

RANGE

＠I

FiG.1 Range for Units to 12 Volts

175

, TEMPERATURE COEFFICIENT

( mV/

℃

)

JL,

JUMCTION TO LEAD THERMAL

150

125

100

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9 1.0

L, LEAD LENGTH TO HEAT SINK (INCHES)

, ZENER VOLTAGE (VOLTS)

FiG.2 Range for Units to 12 to 36 Volts

＠I

=25℃

20mA

0.01mA

1mA

-2

-4

NOTE:BELOW 3 VOLTS AAND ABOCE 8

VOLTS

CHANGES IN ZENER CURRENT DO NOT

FIG.3 Temperature Coefficients

1000

700

500

200

100

=1mA

Lead V.S. θ

FIG.4 Temperature Coefficients

400

300

200

C, CAPACITANCE (

ZENER VOLTAGE (VOLTS)

V.S. θ

DYNAMIC IMPEDANCE (OHNS)

=25℃

(ms)=0.1I

(do)

f=60h

0VBIAS

5mA

100

0VBIAS

20mA

50% OF BREAKDOWNBIAS

50 70

100

ZENER CURRENT (mA)

FIG. Typical Thermal

Resistance V.S. Lead

1.25

FIG.6 Effect of Zener Current

, NOMINAL V

(VOLTS)

,MAXIMUM DISSIPATION

(WATTS)

1.0

0.75

0.5

0.25

100

120 140 160

, LEAD TEMPERATURE (

180

200

FIG.7 Power Temperature Derating Curve

WEITRON

http://www.weitron.com.tw

3/3

03-May-05

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