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MOTOROLASEMICONDUCTORTECHNICAL DATA

Motorola TVS/Zener Device Data

6-1

500 mW DO-35 Glass Data Sheet

500 mW DO-35 GlassZener Voltage Regulator DiodesGENERAL DATA APPLICABLE TO ALL SERIES IN

THIS GROUP500 MilliwattHermetically SealedGlass Silicon Zener Diodes

Specification Features:

Complete Voltage Range 1.8 to 200 Volts

DO-204AH Package Smaller than Conventional DO-204AA Package

Double Slug Type Construction

Metallurgically Bonded Construction

Mechanical Characteristics:CASE: Double slug type, hermetically sealed glass

MAXIMUM LEAD TEMPERATURE FOR SOLDERING PURPOSES: 230C, 1/16 from

case for 10 seconds

FINISH: All external surfaces are corrosion resistant with readily solderable leads

POLARITY: Cathode indicated by color band. When operated in zener mode, cathode

will be positive with respect to anode

MOUNTING POSITION: Any

WAFER FAB LOCATION: Phoenix, Arizona

ASSEMBLY/TEST LOCATION: Seoul, Korea

MAXIMUM RATINGS (Motorola Devices)*

Rating Symbol Value Unit

DC Power Dissipation and TL 75CLead Length = 3/8

Derate above TL = 75C

PD500

4

mW

mW/C

Operating and Storage Temperature Range TJ, Tstg 65 to +200 C

* Some part number series have lower JEDEC registered ratings.

0.7

0.6

0.5

0.4

0.3

0.2

0.1

00 20 40 60 80 100 120 140 160 180 200

TL, LEAD TEMPERATURE (C)

PD,MAXIMUMPOWE

RDISSIPATION(WATTS)

Figure 1. Steady State Power Derating

HEATSINKS

3/8 3/8

1N746ASERIES

CASE 299

DO-204AH

GLASS

500 mW

DO-35 GLASS

GLASS ZENER DIODES

500 MILLIWATTS

1.8200 VOLTS

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GENERAL DATA 500 mW DO-35 GLASS


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ELECTRICAL CHARACTERISTICS (TA = 25C, VF = 1.5 V Max at 200 mA for all types)

Nominal Maximum Maximum Reverse Leakage Current

Type

Number

(Note 1)

ener o age

VZ @ IZT(Note 2)

Volts

es

Current

IZTmA

ax mum ener mpe ance

ZZT @ IZT(Note 3)

Ohms

ener urren

IZM(Note 4)

mA

TA = 25C

IR @ VR = 1 V

A

TA = 150C

IR @ VR = 1 V

A

1N746A 3.3 20 28 110 10 30 1N747A 3.6 20 24 100 10 30

1N748A 3.9 20 23 95 10 30

1N749A 4.3 20 22 85 2 30

1N750A 4.7 20 19 75 2 30

1N751A 5.1 20 17 70 1 20

1N752A 5.6 20 11 65 1 20

1N753A 6.2 20 7 60 0.1 20

1N754A 6.8 20 5 55 0.1 20

1N755A 7.5 20 6 50 0.1 20

1N756A 8.2 20 8 45 0.1 20

1N757A 9.1 20 10 40 0.1 20

1N758A 10 20 17 35 0.1 20

1N759A 12 20 30 30 0.1 20

NOTE 1. TOLERANCE AND VOLTAGE DESIGNATION

Tolerance Designation

The type numbers shown have tolerance designations as follows:

1N4370A series: 5% units, C for 2%, D for 1%.

1N746A series: 5% units, C for 2%, D for 1%.

1N957B series: 5% units, C for 2%, D for 1%.

NOTE 2. ZENER VOLTAGE (VZ) MEASUREMENT

Nominal zener voltage is measured with the device junction in thermal equilibrium at the lead

temperature of 30C 1C and 3/8 lead length.

NOTE 3. ZENER IMPEDANCE (ZZ) DERIVATION

ZZT and ZZK are measured by dividing the ac voltage drop across the device by the ac current

applied. The specified limits are for IZ(ac) = 0.1 IZ(dc) with the ac frequency = 60 Hz.

NOTE 4. MAXIMUM ZENER CURRENT RATINGS (IZM)

Values shown are based on the JEDEC rating of 400 mW. Where the actual zener voltage

(VZ) is known at the operating point, the maximum zener current may be increased and is

limited by the derating curve.

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APPLICATION NOTE ZENER VOLTAGE

Since the actual voltage available from a given zener diode

is temperature dependent, it is necessary to determine junc-

tion temperature under any set of operating conditions in order

to calculate its value. The following procedure is recom-

mended:

Lead Temperature, TL, should be determined from:TL = LAPD + TA.

LAis the lead-to-ambient thermal resistance (C/W) and PDis

the power dissipation. The value for LA will vary and depends

on the device mounting method. LA is generally 30 to 40C/W

for the various clips and tie points in common use and for

printed circuit board wiring.

The temperature of the lead can also be measured using a

thermocouple placed on the lead as close as possible to the tie

point. The thermal mass connected to the tie point is normally

large enough so that it will not significantly respond to heat

surges generated in the diode as a result of pulsed operation

once steady-state conditions are achieved. Using the mea-

sured value of TL

, the junction temperature may be deter-

mined by:

TJ = TL + TJL.

TJL is the increase in junction temperature above the lead

temperature and may be found from Figure 2 for dc power:

TJL = JLPD.

For worst-case design, using expected limits of IZ, limits of

PDand the extremes of TJ(TJ) may be estimated. Changes in

voltage, VZ, can then be found from:

V = VZTJ.

VZ, the zener voltage temperature coefficient, is found from

Figures 4 and 5.

Under high power-pulse operation, the zener voltage will

vary with time and may also be affected significantly by the

zener resistance. For best regulation, keep current excursions

as low as possible.

Surge limitations are given in Figure 7. They are lower than

would be expected by considering only junction temperature,

as current crowding effects cause temperatures to be ex-

tremely high in small spots, resulting in device degradation

should the limits of Figure 7 be exceeded.

L L

500

400

300

200

100

00 0.2 0.4 0.6 0.8 1

2.460 V

62200 V

L, LEAD LENGTH TO HEAT SINK (INCH)JL,JUNCTION-TO-LEADTHERMALRESISTANCE(C/W)

Figure 2. Typical Thermal Resistance

TYPICAL LEAKAGE CURRENTAT 80% OF NOMINALBREAKDOWN VOLTAGE

+25C

+125C

100070005000

2000

1000700500

200

1007050

20

1075

2

10.70.5

0.2

0.10.070.05

0.02

0.010.0070.005

0.002

0.0013 4 5 6 7 8 9 10 11 12 13 14 15

VZ, NOMINAL ZENER VOLTAGE (VOLTS)

I

,LEAKAGE

CURRENT(A)

R

Figure 3. Typical Leakage Current

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6-4


+12

+10

+8

+6

+4

+2

0

2

42 3 4 5 6 7 8 9 10 11 12

VZ, ZENER VOLTAGE (VOLTS)

Figure 4a. Range for Units to 12 Volts

VZ @ IZT(NOTE 2)

RANGE

TEMPERATURE COEFFICIENTS(55C to +150C temperature range; 90% of the units are in the ranges indicated.)

100

7050

30

20

10

7

5

3

2

12 3 4 5 6 7 8 9 10 11 12 10 20 30 50 70 100


Figure 4b. Range for Units 12 to 100 Volts

RANGE VZ @ IZ (NOTE 2)

120 130 140 150 160 170 180 190 200

200

180

160

140

120

100


Figure 4c. Range for Units 120 to 200 Volts

VZ @ IZT(NOTE 2)

+6

+4

+2

0

2

43 4 5 6 7 8


Figure 5. Effect of Zener Current

NOTE: BELOW 3 VOLTS AND ABOVE 8 VOLTSNOTE: CHANGES IN ZENER CURRENT DO NOTNOTE: AFFECT TEMPERATURE COEFFICIENTS

1 mA

0.01 mA

VZ @ IZTA = 25C

1000

C,CAPACITANCE(pF)

500

200

100

50

20

10

5

2

11 2 5 10 20 50 100


Figure 6a. Typical Capacitance 2.4100 Volts

TA = 25C

0 V BIAS

1 V BIAS

50% OFVZ BIAS

10070

50

30

20

10

75

3

2

1120 140 160 180 190 200 220


Figure 6b. Typical Capacitance 120200 Volts

TA = 25C

1 VOLT BIAS

50% OF VZ BIAS

0 BIAS

VZ,TEMPERATURECOEFFIC

IENT(mV/C)

20mA

C,CAPACITANCE(pF)

VZ,TEMPERATURECOEFFIC

IENT(mV/C)

VZ,TEMPERATURECOEFFICIENT(mV/C)

VZ,TEMPERATURECOEFFICIENT(mV/C)

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100

7050

30

20

10

75

3

2

10.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 20 50 100 200 500 1000

Ppk,PEAKSURG

EPOWER(WATTS)

PW, PULSE WIDTH (ms)

5% DUTY CYCLE

10% DUTY CYCLE

20% DUTY CYCLE

11 V91 V NONREPETITIVE

1.8 V10 V NONREPETITIVE

RECTANGULARWAVEFORMTJ = 25C PRIOR TOINITIAL PULSE

Figure 7a. Maximum Surge Power 1.891 Volts

1000700500

300200

1007050

3020

107532

10.01 0.1 1 10 100 1000

Ppk,PEAKSURGEPOWER(WAT

TS)

PW, PULSE WIDTH (ms)

Figure 7b. Maximum Surge Power DO-204AH100200 Volts

1000500

200

100

50

20

10

1

2

5

0.1 0.2 0.5 1 2 5 10 20 50 100

IZ, ZENER CURRENT (mA)

Figure 8. Effect of Zener Current onZener Impedance

ZZ,DYNAMICIMPEDANCE(OHMS

)

ZZ,DY

NAMICIMPEDANCE(OHMS)

1000700500

200

1007050

20

10

75

2

11 2 3 5 7 10 20 30 50 70 100


Figure 9. Effect of Zener Voltage on Zener Impedance Figure 10. Typical Forward Characteristics

RECTANGULARWAVEFORM, TJ = 25C

100200 VOLTS NONREPETITIVE

TJ = 25C

iZ(rms)= 0.1 IZ(dc)

f = 6 0 H zIZ = 1 m A

5 mA

20mA

TJ = 25C

iZ(rms) = 0.1 IZ(dc)

f = 6 0 H z

VZ =2 .7 V

47 V

27 V

6.2 V

VF, FORWARD VOLTAGE (VOLTS)

0.4 0.5 0.6 0.7 0.8 0.9 1 1.1

1000

500

200

100

50

20

10

5

2

1

IF,FO

RWARDCURRENT(mA) MINIMUM

MAXIMUM

150C

75C

0C

25C

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Figure 11. Zener Voltage versus Zener Current VZ = 1 thru 16 Volts


IZ,ZENERCURREN

T(mA)

20

10

1

0.1

0.011 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

TA = 25



15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

10

1

0.1

0.01

TA = 25

IZ,ZENERCURRENT(

mA)

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10

1

0.1

0.0130 35 40 45 50 55 60 70 75 80 85 90 95 100



110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260

10

1

0.1

0.01

TA = 25

65 105

IZ,ZENERCURRE

NT(mA)

IZ,ZENERCURRENT(mA)

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500 mW DO-35 Glass

MULTIPLE PACKAGE QUANTITY (MPQ)

REQUIREMENTS

Zener Voltage Regulator Diodes Axial Leaded

CASE 299-02

DO-204AH

GLASS

(Refer to Section 10 for Surface Mount, Thermal Data and Footprint Information.)

Refer to Section 10 for more information on Packaging Specifications.

MIN MINMAX MAX

M IL LI ME TE RS I NC HE S

DIM

3.051.520.4625.40

5.082.290.561.27

38.10

0.1200.0600.0181.000

0.2000.0900.0220.0501.500

AB

D

F

K

All JEDEC dimensions and notes apply.

NOTES:1. PACKAGE CONTOUR OPTIONAL WITHIN A AND B

HEAT SLUGS, IF ANY, SHALL BE INCLUDEDWITHIN THIS CYLINDER, BUT NOT SUBJECT TOTHE MINIMUM LIMIT OF B.

2. LEAD DIAMETER NOT CONTROLLED IN ZONE FTO ALLOW FOR FLASH, LEAD FINISH BUILDUPAND MINOR IRREGULARITIES OTHER THANHEAT SLUGS.

3. POLARITY DENOTED BY CATHODE BAND.4. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

B

A

KD

F

F

K

Package Option

Tape and Reel 5K

Type No. Suffix

RL, RL2(1)

MPQ (Units)

Tape and Ammo TA, TA2(1) 5K

NOTES: 1. The 2 suffix refers to 26 mm tape spacing.

NOTES: 2. Radial Tape and Reel may be available. Please contact your Motorola

NOTES: 2. representative.

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