BZX79C15TA2 - Tak Cheong Electronics (Holdings) Co., Ltd.

December 2005 / B http://takcheong.com

Licensed by ON Semiconductor,

A trademark of semiconductor

Components Industries, LLC for

Zener Technology and Products.

TAK CHEON

500 mW DO-35 Hermetically

Sealed Glass Zener Voltage

Regulators

Maximum Ratings (Note 1)

Rating Symbol Value Units

Maximum Steady State Power Dissipation

@TL≤75℃, Lead Length = 3/8”

Derate Above 75℃

500

4.0

mW/℃

Operating and Storage

Temperature Range TJ, Tstg -65 to +200 °C

Note 1: Some part number series have lower JEDEC registered ratings.

Specification Features:

 Zener Voltage Range = 2.4V to 200V

 ESD Rating of Clas 3 (>6 KV) per Human Body Model

 DO-35 Package (DO-204AH)

 Double Slug Type Construction

 Metallurgical Bonded Construction

Specification Features:

Case : Double slug type, hermetically sealed glass

Finish : All external surfaces are corrosion resistant and leads are readily solderable

Polarity : Cathode indicated by polarity band

Mounting: Any

Maximum Lead Temperature for Soldering Purposes

230℃, 1/16” from the case for 10 seconds

Ordering Information

Device Package Quantity

BZX79Cxxx Axial Lead 3000 Units / Box

BZX79CxxxRL Axial Lead 5000 Units / Tape & Reel

BZX79CxxxRL2* Axial Lead 5000 Units / Tape & Reel

BZX79CxxxRR1 ! Lead Form 3000 Units / Radial Tape & Reel

BZX79CxxxRR2 i Lead Form 3000 Units / Radial Tape & Reel

BZX79CxxxTA Axial Lead 5000 Units / Tape & Ammo

BZX79CxxxTA2* Axial Lead 5000 Units / Tape & Ammo

BZX79CxxxRA1 ! Axial Lead 3000 Units / Radial Tape & Ammo

BZX79CxxxRA2 i Axial Lead 3000 Units / Radial Tape & Ammo

* The “2” suffix refer to 26mm tape spacing.

! “1”: Polarity band up with cathode lead off first.

i “2”: Polarity band down with cathode lead off first.

BZX79C2V4 through BZX79C200 Series

Cathode Anode

L = Logo

79Cxxx = BZX79Cxxx Device Code

79C

xxx

Devices listed in bold italic are Tak Cheong Preferred

devices. Preferred devices are recommended choices

for future use and best overall value.

AXIAL LEAD

DO35

http://takcheong.com

BZX79C2V4 through BZX79C200 Series

ELECTRICAL CHARACTERIZATION (TA = 25°C unless

otherwise noted, VF = 1.5V max @ IF = 100mA for all types)

Symbol Parameter

VZ Reverse Zener Voltage @ IZT

IZT Reverse Current

ZZT Maximum Zener Impedance @ IZT

θVBR Temperature Coefficient of VBR (Typical)

IR Reverse Leakage Current @ VR

VR Reverse Voltage

IF Forward Current

VF Forward Voltage @ IF

C Capacitance (Typical)

ELECTRICAL CHARACTERIZATION (TA = 25°C unless otherwise noted, VF = 1.5V max @ IF = 100mA for all types)

Leakage Current θVBR

VZ @ IZT

(Volts)

(Note 3.)

Max Zener

Impedance

(Note 4.)

IZT @ IZT IZT IR @ VR (mV/℃)

VZ =0,

F=1.0MHz

Device

(Note 2.)

Device

Marking Min Max (Ω) (mA) (uA) (Volts) Min Max (pF)

BZX79C2V4

BZX79C2V7

BZX79C3V0

BZX79C3V3

BZX79C3V6

79C2V4

79C2V7

79C3V0

79C3V3

79C3V6

2.2

2.5

2.8

3.1

3.4

2.6

2.9

3.2

3.5

3.8

100

-3.5

255

230

215

200

185

BZX79C3V9

BZX79C4V3

BZX79C4V7

BZX79C5V1

BZX79C5V6

79C3V9

79C4V3

79C4V7

79C5V1

79C5V6

3.7

4.4

4.8

5.2

4.1

4.6

5.4

-3.5

-2.7

-2

0.3

0.2

1.2

2.5

175

160

130

110

BZX79C6V2

BZX79C6V8

BZX79C7V5

BZX79C8V2

BZX79C9V1

79C6V2

79C6V8

79C7V5

79C8V2

79C9V1

5.8

6.4

7.7

8.5

6.6

7.2

7.9

8.7

9.6

0.7

0.5

0.4

1.2

2.5

3.2

3.8

3.7

4.5

5.3

6.2

BZX79C10

BZX79C11

BZX79C12

BZX79C13

BZX79C15

79C10

79C11

79C12

79C13

79C15

9.4

10.4

11.4

12.4

13.8

10.6

11.6

12.7

14.1

15.6

0.2

0.1

0.05

10.5

4.5

5.4

9.2

2. TOLERANCE AND VOLTAGE DESIGNATION

Tolerance designation – the type numbers listed have zener voltage min/max limits as shown.

3. REVERSE ZENER VOLTAGE (VZ)

Reverse zener voltage is measured under pulse conditions such at TJ is no more than 2℃ above TA.

4. 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 AC frequency = 60Hz.

VR I

IZT

Zener Voltage Regulator

BZX79C2V4 through BZX79C200 Series

http://www.takcheong.com

ELECTRICAL CHARACTERISTICS (TA = 25ºC unless

otherwise noted. VF = 1.5 V Max @ IF = 100mA for all types)

Symbol Parameter

VZReverse Zener Voltage @ IZT

IZT Reverse Zener Current

ZZT Maximum Zener Impedance @ IZT

θVBR Temperature Coeffic i ent of VBR (Typical)

IRReverse Leakage Current @ VR

VRReverse Voltage

IFForward Current

VFForward Voltage @ IF

C Capacitanc e (Typic al )

ELECTRICAL CHARACTERISTICS (TA = 25c unless otherwise noted, V F = 1.5 V Max @ IF = 100mA for all types)

Leakage Current θ

θθ

θVBR

VZ @ IZT

(Volts)

(Note 3.)

Max Zener

Impedance

(Note 4)

ZZT @ IZT IZT IR @ VR(mV/ºC)

VZ = 0,

F = 1.0MHz

Device

(Note 2.) Device

Marking Min Max (Ω

ΩΩ

Ω)(mA)(

µµ

µA) (Volts) Min Max (pF)

BZX79C2V4 79C2V4 2.2 2.6 100 5 100 1 -3.5 0 255

BZX79C2V7 79C2V7 2.5 2.9 100 5 75 1 -3.5 0 230

BZX79C3V0 79C3V0 2.8 3.2 95 5 50 1 -3.5 0 215

BZX79C3V3 79C3V3 3.1 3.5 95 5 25 1 -3.5 0 200

BZX7C3V6 7C3V6 3.4 3.8 90 5 15 1 -3.5 0 185

BZX79C3V9 79C3V9 3.7 4.1 90 5 10 1 -3.5 0.3 175

BZX79C4V3 79C4V3 4 4.6 90 5 5 1 -3.5 1 160

BZX79C4V7 79C4V7 4.4 5 80 5 3 2 -3.5 0.2 130

BZX79C5V1 79C5V1 4.8 5.4 60 5 2 2 -2.7 1.2 110

BZX79C5V6 79C5V6 5.2 6 40 5 1 2 -2 2.5 95

BZX79C6V2 79C6V2 5.8 6.6 10 5 3 4 0.4 3.7 90

BZX79C6V8 79C6V8 6.4 7.2 15 5 2 4 1.2 4.5 85

BZX79C7V5 79C7V5 7 7.9 15 5 1 5 2.5 5.3 8

BZX79C8V2 79C8V2 7.7 8.7 15 5 0.7 5 3.2 6.2 75

BZX79C9V1 79C9V1 8.5 9.6 15 5 0.5 6 3.8 7 70

BZX79C10 79C10 9.4 10.6 20 5 0.2 7 4.5 8 70

BZX79C11 79C11 10.4 11.6 20 5 0.1 8 5.4 9 65

BZX79C12 79C12 11.4 12.7 25 5 0.1 8 6 10 65

BZX79C13 79C13 12.4 14.1 30 5 0.1 8 7 11 60

BZX79C15 79C15 13.8 15.6 30 5 0.05 10.5 9.2 13 55

2. TOLERANCE AND VOLTAGE DESIGNATION

Tolerance designation – the type numbers listed have zener voltage min/max limits as shown.

3. REVE RSE ZENE R VOL T AGE (VZ)

Reverse zener voltage is measured under pulse conditions such that TJ is no more than 2ºC above TA.

4. ZENER IMPEDANCE (ZZ) DERIVATION

ZZT and ZZK are measured by dividing the AC voltage drop across the device by the AC current appl i ed. The specified l imits

are for IZ(AC) = 0.1 IZ(DC) with AC frequenc y = 60Hz.

BZX79C2V4 through BZX79C200 Series

http://www.takcheong.com

ELECTRICAL CHARACTERISTICS (TA = 25c unless otherwise noted, V F = 1.5 V Max @ IF = 100mA for all types)

Leakage Current θ

θθ

θVBR

VZ @ IZT

(Volts)

(Note 3.)

Max Zener

Impedance

(Note 4)

ZZT @ IZT IZT IR @ VR(mV/ºC)

VZ = 0,

F = 1.0MHz

Device

(Note 2.) Device

Marking Min Max (Ω

ΩΩ

Ω)(mA)(

µµ

µA) (Volts) Min Max (pF)

BZX79C16 79C16 15.3 17.1 40 5 0.05 11.2 10.4 14 52

BZX79C18 79C18 16.8 19.1 45 5 0.05 12.6 12.9 16 47

BZX79C20 79C20 18.8 21.2 55 5 0.05 14 14.4 18 36

BZX79C22 79C22 20.8 23.3 55 5 0.05 15.4 16.4 20 34

BZX79C24 79C24 22.8 25.6 70 5 0.05 16.8 18.4 22 33

BZX79C27 79C27 25.1 28.9 80 2 0.05 18.9 23.5 30

BZX79C30 79C30 28 32 80 2 0.05 21 26 27

BZX79C33 79C33 31 35 80 2 0.05 23.1 29 25

BZX79C36 79C36 34 38 90 2 0.05 25.2 31 23

BZX79C39 79C39 37 41 130 2 0.05 27.3 34 21

BZX79C43 79C43 40 46 150 2 0.05 30.1 37 21

BZX79C47 79C47 44 50 170 2 0.05 32.9 40 19

BZX79C51 79C51 48 54 180 2 0.05 35.7 44 19

BZX79C56 79C56 52 60 200 2 0.05 39.2 47 18

BZX79C62 79C62 58 66 215 2 0.05 43.4 51 17

BZX79C68 79C68 64 72 240 2 0.05 47.6 56 17

BZX79C75 79C75 70 79 255 2 0.05 52.5 60 16.5

BZX79C82 79C82 77 87 280 2 0.1 62 46 95 29

BZX79C91 79C91 85 96 300 2 0.1 69 51 107 28

BZX79C100 79C100 94 106 500 1 0.1 76 57 119 27

BZX79C110 79C110 104 116 650 1 0.1 84 63 131 26

BZX79C120 79C120 114 127 800 1 0.1 91 69 144 24

BZX79C130 79C130 124 141 950 1 0.1 99 75 158 23

BZX79C150 79C150 138 156 1250 1 0.1 114 87 185 21

BZX79C160 79C160 153 171 1400 1 0.1 122 93 200 20

BZX79C180 79C180 168 191 1700 1 0.1 137 105 228 18

BZX79C200 79C200 188 212 2000 1 0.1 152 120 255 17

2. TOLERANCE AND VOLTAGE DESIGNATION

Tolerance designation – the type numbers listed have zener voltage min/max limits as shown.

3. REVE RSE ZENE R VOL T AGE (VZ)

Reverse zener voltage is measured under pulse conditions such that TJ is no more than 2ºC above TA.

4. ZENER IMPEDANCE (ZZ) DERIVATION

ZZT and ZZK are measured by dividing the AC voltage drop across the device by the AC current appl i ed. The specified l imits

are for IZ(AC) = 0.1 IZ(DC) with AC frequenc y = 60Hz.

BZX79C2V4 through BZX79C200 Series

http://www.takcheong.com

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0 20 40 60 80 100 120 140 160 180 200

TL, LEAD TEMPERATURE (°C)

Figure 1. Steady State Power Derating

HEAT

SINKS

3/8" 3/8"

PD, MAXIMUM STEADY STATE

POWER DISSIPATION (WATTS)

BZX79C2V4 through BZX79C200 Series

http://www.takcheong.com

APPLICATION NOTE - ZENER VOLTAGE

Since the actual voltage available from a given zener

diode is temperature dependent, it is necessary to determine

junction temperature under any set of operating conditions

in order to calculate its value. The following procedure is

recommended:

Lead Temperature, TL, should be determined from:

TL = θLAPD + TA.

θLA is the lead-to-ambient thermal resistance (°C/W) and PD

is the power dissipation. The value for θLA will vary and

depends o n the device mounting method. θLA is generally 30

to 40°C/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 measured value of TL, the junction temperature

may be determined 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 = θJLPD.

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

of PD and the extremes of TJ(∆TJ) may be estimated.

Changes in voltage, VZ, can then be found from:

∆V = θVZTJ.

θVZ, 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, a s current crowding ef fects cause temperatures

to be extremely high in small spots, resulting in device

degradation should the limits of Figure 7 be exceeded.

500

400

300

200

100

0 0.2 0.4 0.6 0.8 1

2.4-60 V

62-200V

L , LEAD LENGTH TO HEAT SINK (INCH)

JL, JUNCTION TOLEAD THERMAL RESISTANCE(°C/W)θ

Figure 2. Typical Thermal Resistance

TYPICAL LEAKAGE CURRENT

AT 80% OF NOMINAL

BREAKDOWN VOLTAGE

+25°C

+125°C

1000

7000

5000

2000

1000

700

500

200

100

0.7

0.5

0.2

0.1

0.07

0.05

0.02

0.01

0.007

0.005

0.002

0.001

34 5 6 7 8 9101112

VZ , NOMINAL ZENER VOLTAGE (VOLTS)

I, LEAKAGE CURRENT ( A)µR

Figure 3. Typical Leakage Current

13 14 15

BZX79C2V4 through BZX79C200 Series

http://www.takcheong.com

+12

+10

-2

-4

VZ , ZENER VOLTAGE (VOLTS)

Figure 4a. Range for Units to 12 Volts

VZ@IZT

(NOTE 2)

RANGE

TEMPERATURE COEFFICIENTS

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

100

26 10 20 30 50 70 100

VZ , ZENER VOLTAGE (VOLTS)

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

VZ , ZENER VOLTAGE (VOLTS)

Figure 4c. Range for Units 120 to 200 Volts

VZ @ IZT

(NOTE 2)

-2

-4

VZ , ZENER VOLTAGE (VOLTS)

Figure 5. Effect of Zener Current

NOTE: BELOW 3 VOLTS AND ABOVE 8 VOL TS

NOTE: CHANGES IN ZENER CURRENT DO NOT

NOTE: AFFECT TEMPERATURE COEFFICIENTS

1mA

0.01mA

VZ @ IZ

TA=25 °C

1000

C, CAP ACIT ANCE (pF)

500

200

100

1 2 5 10 20 50 100

VZ, ZENER VOLTAGE (VOLTS)

Figure 6a. Typical Capacitance 2.4-100 Volts

TA = 25°C

0V BIAS

1V BIAS

50% OF

VZBIAS

100

120 140 160 180 190 200 220

VZ, ZENER VOLTAGE (VOLTS)

Figure 6b. Typical Capacitance 120-200 Volts

T= 25 °C

1 VOLT BIAS

50% OF V BIAS

0 BIAS

θVZ

TEMPERA TURE COEFFICIENT (mV/ °C)

20mA

C, CAP ACIT ANCE (pF) θVZ

TEMPERATURE COEFFICIENT (mV/ °C)θVZ

TEMPERATURE COEFFICIENT (mV/°C)

θVZ, TEMPERA TURE COEFFICIENT (mV/°C)

345 710

11 12

5678

BZX79C2V4 through BZX79C200 Series

http://www.takcheong.com

100

0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 20 50 100 200 500 1000

Ppk , PEAK SURGE POWER (WATTS)

PW, PULSE WIDTH (ms)

5% DUTY CYCLE

10% DUTY CYCLE

20% DUTY CYCLE

11V-91V NONREPETITIVE

1.8V-10V NONREPETITIVE

RECT ANGULAR

WAVEFORM

TJ= 25°C PRIOR TO

INITIAL PULSE

Figure 7a. Maximum Surge Power 1.8-91 Volts

1000

700

500

300

200

100

0.01 0.1 1 10 100 1000

Ppk , PEAK SURGE POWER (WATTS)

PW, PULSE WIDTH (ms)

Figure 7b. Maximum Surge Power DO-35

100-200Volts

1000

500

200

100

0.1 0.2 0.5 1 2 5 10 20 50 100

IZ , ZENER CURRENT (mA)

Figure 8. Effect of Zener Current on

Zener Impedance

ZZ, DYNAMIC IMPEDANCE (OHMS)

1000

700

500

200

100

1 2 3 5 7 10 20 30 50 70 100

VZ, ZENER VOLTAGE (VOLTS)

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

RECT ANGULAR

WAVEFORM, TJ = 25°C

100-200VOLTS NONREPETITIVE

TJ= 25°C

iZ (rms) = 0.1 IZ (dc)

f = 60Hz

IZ=1mA

5mA

20mA

TJ= 25°C

iZ(rms)=0.1 Iz(dc)

f = 60 Hz

VZ = 2.7V

47V

27V

6.2V

VF, FOR WARD VOLTAGE (VOLTS)

0.4 0.5 0.6 0.7 0.8 0.9 1 1.1

1000

500

200

100

IF, FOR WARD CURRENT (mA)

MINIMUM

MAXIMUM

150 °C

75°C

0°C

25°C

BZX79C2V4 through BZX79C200 Series

http://www.takcheong.com

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

VZ, ZENER VOLTAGE (VOLTS)

IZ, ZENER CURRENT (mA)

0.1

0.01

12 5 78910111213141516

TA= 25°C

Figure 12. Zener Voltage versus Zener Current - VZ = 15 thru 30 Volts

VZ , ZENER VOLTAGE (VOLTS)

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

0.1

0.01

TA= 25°C

IZ, ZENER CURRENT (mA)

BZX79C2V4 through BZX79C200 Series

http://www.takcheong.com

Figure 13. Zener Voltage versus Zener Current - VZ = 30 thru 105 Volts

VZ , ZENER VOLTAGE (VOLTS)

0.1

0.01

30 35 40 45 50 55 60 70 75 80 85 90 95 100

Figure 14. Zener Voltage versus Zener Current - VZ = 110 thru 220 Volts

VZ, ZENER VOLTAGE (VOLTS)

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

0.1

0.01

TA= 25°

65 105

IZ, ZENER CURRENT (mA)IZ, ZENER CURRENT (mA)