BZX55-Series
www.vishay.com

Vishay Semiconductors

Small Signal Zener Diodes
FEATURES
• Very sharp reverse characteristic
• Low reverse current level
• Very high stability
• Low noise
• AEC-Q101 qualified
• Material categorization:
For definitions of compliance please see
www.vishay.com/doc?99912

APPLICATIONS
PRIMARY CHARACTERISTICS
PARAMETER

VALUE

• Voltage stabilization
UNIT

VZ range nom.

2.4 to 75

V

Test current IZT

2.5; 5

mA

VZ specification

Pulse current

Int. construction

Single

ORDERING INFORMATION
DEVICE NAME

ORDERING CODE

TAPED UNITS PER REEL

MINIMUM ORDER QUANTITY

BZX55-series

BZX55-series-TR

10 000 per 13" reel

30 000/box

BZX55-series

BZX55-series-TAP

10 000 per ammopack
(52 mm tape)

30 000/box

PACKAGE
PACKAGE NAME
DO-35

WEIGHT
125 mg

MOLDING COMPOUND MOISTURE SENSITIVITY
FLAMMABILITY RATING
LEVEL
UL 94 V-0

MSL level 1
(according J-STD-020)

SOLDERING
CONDITIONS
260 °C/10 s at terminals

ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)
PARAMETER
Power dissipation

TEST CONDITION

SYMBOL

VALUE

UNIT

l = 4 mm, TL = 25 °C

Ptot

500

mW

IZ

Ptot/VZ

mA

l = 4 mm, TL = constant

RthJA

300

K/W

Tj

175

°C

Tstg

- 65 to + 175

°C

VF

1.5

V

Zener current
Junction to ambient air
Junction temperature
Storage temperature range
Forward voltage (max.)

Rev. 1.7, 06-May-13

IF = 200 mA

Document Number: 85604
1
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

BZX55-Series
www.vishay.com

Vishay Semiconductors

ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
ZENER VOLTAGE
RANGE

TEST
CURRENT

REVERSE LEAKAGE
CURRENT
IR at VR

VZ at IZT1

PART NUMBER

IZT1

V
BZX55C2V4

IZT2

NOM.

MAX.

2.28

2.4

2.56

5

ZZ at IZT1

Tamb = Tamb =
25 °C 150 °C

mA

MIN.

DYNAMIC
RESISTANCE

μA
1

< 50

ZZK at IZT2
TKVZ

f = 1 kHz


V

< 100

TEMPERATURE
COEFFICIENT

1

%/K

MAX.

MAX.

MIN.

MAX.

< 85

< 600

- 0.09

- 0.06

BZX55C2V7

2.5

2.7

2.9

5

1

< 10

< 50

1

< 85

< 600

- 0.09

- 0.06

BZX55C3V0

2.8

3.0

3.2

5

1

<4

< 40

1

< 85

< 600

- 0.08

- 0.05

BZX55C3V3

3.1

3.3

3.5

5

1

<2

< 40

1

< 85

< 600

- 0.08

- 0.05

BZX55C3V6

3.4

3.6

3.8

5

1

<2

< 40

1

< 85

< 600

- 0.08

- 0.05

BZX55C3V9

3.7

3.9

4.1

5

1

<2

< 40

1

< 85

< 600

- 0.08

- 0.05

BZX55C4V3

4

4.3

4.6

5

1

<1

< 20

1

< 75

< 600

- 0.06

- 0.03

BZX55C4V7

4.4

4.7

5

5

1

< 0.5

< 10

1

< 60

< 600

- 0.05

0.02

BZX55C5V1

4.8

5.1

5.4

5

1

< 0.1

<2

1

< 35

< 550

- 0.02

0.02

BZX55C5V6

5.2

5.6

6

5

1

< 0.1

<2

1

< 25

< 450

- 0.05

0.05

BZX55C6V2

5.8

6.2

6.6

5

1

< 0.1

<2

2

< 10

< 200

0.03

0.06

BZX55C6V8

6.4

6.8

7.2

5

1

< 0.1

<2

3

<8

< 150

0.03

0.07

BZX55C7V5

7

7.5

7.9

5

1

< 0.1

<2

5

<7

< 50

0.03

0.07

BZX55C8V2

7.7

8.2

8.7

5

1

< 0.1

<2

6.2

<7

< 50

0.03

0.08

BZX55C9V1

8.5

9.1

9.6

5

1

< 0.1

<2

6.8

< 10

< 50

0.03

0.09

BZX55C10

9.4

10

10.6

5

1

< 0.1

<2

7.5

< 15

< 70

0.03

0.1

BZX55C11

10.4

11

11.6

5

1

< 0.1

<2

8.2

< 20

< 70

0.03

0.11

BZX55C12

11.4

12

12.7

5

1

< 0.1

<2

9.1

< 20

< 90

0.03

0.11

BZX55C13

12.4

13

14.1

5

1

< 0.1

<2

10

< 26

< 110

0.03

0.11

BZX55C15

13.8

15

15.6

5

1

< 0.1

<2

11

< 30

< 110

0.03

0.11

BZX55C16

15.3

16

17.1

5

1

< 0.1

<2

12

< 40

< 170

0.03

0.11

BZX55C18

16.8

18

19.1

5

1

< 0.1

<2

13

< 50

< 170

0.03

0.11

BZX55C20

18.8

20

21.2

5

1

< 0.1

<2

15

< 55

< 220

0.03

0.11

BZX55C22

20.8

22

23.3

5

1

< 0.1

<2

16

< 55

< 220

0.04

0.12

BZX55C24

22.8

24

25.6

5

1

< 0.1

<2

18

< 80

< 220

0.04

0.12

BZX55C27

25.1

27

28.9

5

1

< 0.1

<2

20

< 80

< 220

0.04

0.12

BZX55C30

28

30

32

5

1

< 0.1

<2

22

< 80

< 220

0.04

0.12

BZX55C33

31

33

35

5

1

< 0.1

<2

24

< 80

< 220

0.04

0.12

BZX55C36

34

36

38

5

1

< 0.1

<2

27

< 80

< 220

0.04

0.12

BZX55C39

37

39

41

2.5

0.5

< 0.1

<5

30

< 90

< 500

0.04

0.12

BZX55C43

40

43

46

2.5

0.5

< 0.1

<5

33

< 90

< 600

0.04

0.12

BZX55C47

44

47

50

2.5

0.5

< 0.1

<5

36

< 110

< 700

0.04

0.12

BZX55C51

48

51

54

2.5

0.5

< 0.1

< 10

39

< 125

< 700

0.04

0.12

BZX55C56

52

56

60

2.5

0.5

< 0.1

< 10

43

< 135

< 1000

0.04

0.12

BZX55C62

58

62

66

2.5

0.5

< 0.1

< 10

47

< 150

< 1000

0.04

0.12

BZX55C68

64

68

72

2.5

0.5

< 0.1

< 10

51

< 200

< 1000

0.04

0.12

BZX55C75

70

75

79

2.5

0.5

< 0.1

< 10

56

< 250

< 1500

0.04

0.12

Rev. 1.7, 06-May-13

Document Number: 85604
2
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

BZX55-Series
www.vishay.com

Vishay Semiconductors

ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
ZENER VOLTAGE
RANGE

TEST
CURRENT

REVERSE LEAKAGE
CURRENT
IR at VR

VZ at IZT1

PART NUMBER

IZT1

V

IZT2

Tamb =
25 °C

mA

DYNAMIC
RESISTANCE
ZZ at IZT1

Tamb =
150 °C

μA

TEMPERATURE
COEFFICIENT

ZZK at IZT2
TKVZ

f = 1 kHz


V

%/K

MIN.

NOM.

MAX.

BZX55B2V4

2.35

2.4

2.45

5

1

< 50

BZX55B2V7

2.64

2.7

2.76

5

1

< 10

< 50

1

< 85

< 600

- 0.09

- 0.06

BZX55B3V0

2.94

3.0

3.06

5

1

<4

< 40

1

< 90

< 600

- 0.08

- 0.05

BZX55B3V3

3.24

3.3

3.36

5

1

<2

< 40

1

< 90

< 600

- 0.08

- 0.05

BZX55B3V6

3.52

3.6

3.68

5

1

<2

< 40

1

< 90

< 600

- 0.08

- 0.05

BZX55B3V9

3.82

3.9

3.98

5

1

<2

< 40

1

< 90

< 600

- 0.08

- 0.05

BZX55B4V3

4.22

4.3

4.38

5

1

<1

< 20

1

< 90

< 600

- 0.06

- 0.03

BZX55B4V7

4.6

4.7

4.8

5

1

< 0.5

< 10

1

< 80

< 600

- 0.05

0.02

BZX55B5V1

5

5.1

5.2

5

1

< 0.1

<2

1

< 60

< 550

- 0.02

0.02

BZX55B5V6

5.48

5.6

5.72

5

1

< 0.1

<2

1

< 40

< 450

- 0.05

0.05

BZX55B6V2

6.08

6.2

6.32

5

1

< 0.1

<2

2

< 10

< 200

0.03

0.06

BZX55B6V8

6.66

6.8

6.94

5

1

< 0.1

<2

3

<8

< 150

0.03

0.07

BZX55B7V5

7.35

7.5

7.65

5

1

< 0.1

<2

5

<7

< 50

0.03

0.07

BZX55B8V2

8.04

8.2

8.36

5

1

< 0.1

<2

6.2

<7

< 50

0.03

0.08

BZX55B9V1

8.92

9.1

9.28

5

1

< 0.1

<2

6.8

< 10

< 50

0.03

0.09

< 100

1

MAX.

MAX.

MIN.

MAX.

< 85

< 600

- 0.09

- 0.06

BZX55B10

9.8

10

10.2

5

1

< 0.1

<2

7.5

< 15

< 70

0.03

0.1

BZX55B11

10.78

11

11.22

5

1

< 0.1

<2

8.2

< 20

< 70

0.03

0.11

BZX55B12

11.76

12

12.24

5

1

< 0.1

<2

9.1

< 20

< 90

0.03

0.11

BZX55B13

12.74

13

13.26

5

1

< 0.1

<2

10

< 26

< 110

0.03

0.11

BZX55B15

14.7

15

15.3

5

1

< 0.1

<2

11

< 30

< 110

0.03

0.11

BZX55B16

15.7

16

16.3

5

1

< 0.1

<2

12

< 40

< 170

0.03

0.11

BZX55B18

17.64

18

18.36

5

1

< 0.1

<2

13

< 50

< 170

0.03

0.11

BZX55B20

19.6

20

20.4

5

1

< 0.1

<2

15

< 55

< 220

0.03

0.11

BZX55B22

21.55

22

22.45

5

1

< 0.1

<2

16

< 55

< 220

0.04

0.12

BZX55B24

23.5

24

24.5

5

1

< 0.1

<2

18

< 80

< 220

0.04

0.12

BZX55B27

26.4

27

27.6

5

1

< 0.1

<2

20

< 80

< 220

0.04

0.12

BZX55B30

29.4

30

30.6

5

1

< 0.1

<2

22

< 80

< 220

0.04

0.12

BZX55B33

32.4

33

33.6

5

1

< 0.1

<2

24

< 80

< 220

0.04

0.12

BZX55B36

35.3

36

36.7

5

1

< 0.1

<2

27

< 80

< 220

0.04

0.12

BZX55B39

38.2

39

39.8

2.5

0.5

< 0.1

<5

30

< 90

< 500

0.04

0.12

BZX55B43

42.1

43

43.9

2.5

0.5

< 0.1

<5

33

< 90

< 600

0.04

0.12

BZX55B47

46.1

47

47.9

2.5

0.5

< 0.1

<5

36

< 110

< 700

0.04

0.12

BZX55B51

50

51

52

2.5

0.5

< 0.1

< 10

39

< 125

< 700

0.04

0.12

BZX55B56

54.9

56

57.1

2.5

0.5

< 0.1

< 10

43

< 135

< 1000

0.04

0.12

BZX55B62

60.8

62

63.2

2.5

0.5

< 0.1

< 10

47

< 150

< 1000

0.04

0.12

BZX55B68

66.6

68

69.4

2.5

0.5

< 0.1

< 10

51

< 200

< 1000

0.04

0.12

BZX55B75

73

75

76.5

2.5

0.5

< 0.1

< 10

56

< 250

< 1500

0.04

0.12

Rev. 1.7, 06-May-13

Document Number: 85604
3
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

BZX55-Series
www.vishay.com

Vishay Semiconductors

RthJA - Therm. Resist. Junction Ambient (K/W)

BASIC CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
1.3

VZtn - Relative Voltage Change

500
400
300
l

l

200
100
TL = constant

VZtn = VZt/VZ (25 °C)
1.2

0

5

10

15

I - Lead Length (mm)

1.1

4 x 10-4/K
2 x 10-4/K

0

1.0

- 2 x 10-4/K
- 4 x 10-4/K

0.9

- 60

20
95 9611

Fig. 1 - Thermal Resistance vs. Lead Length

0

60

120

180

240

Tj - Junction Temperature (°C)

95 9599

Fig. 4 - Typical Change of Working Voltage vs.
Junction Temperature

15

TKVZ - Temperature Coefficient
of VZ (10-4/K)

600

Ptot - Total Power Dissipation (mW)

8 x 10-4/K
6 x 10-4/K

0.8

0

500
400
300
200
100
0

10

5
IZ = 5 mA
0

-5

0
95 9602

80
120
160 200
40
Tamb - Ambient Temperature (°C)

Fig. 2 - Total Power Dissipation vs. Ambient Temperature

0

10

20

30

40

50

VZ - Z-Voltage (V)

95 9600

Fig. 5 - Temperature Coefficient of VZ vs. Z-Voltage

1000

200

CD - Diode Capacitance (pF)

VZ - Voltage Change (mV)

TKVZ = 10 x 10-4/K

Tj = 25 °C
100

IZ = 5 mA
10

150
VR = 2 V
Tj = 25 °C
100

50

0

1
0
95 9598

5

10

15

20

25

VZ - Z-Voltage (V)

Fig. 3 - Typical Change of Working Voltage under Operating
Conditions at Tamb = 25 °C

Rev. 1.7, 06-May-13

0
95 9601

5

10

15

20

25

VZ - Z-Voltage (V)

Fig. 6 - Diode Capacitance vs. Z-Voltage

Document Number: 85604
4
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

BZX55-Series
Vishay Semiconductors

100

50

10

40

IZ - Z-Current (mA)

IF - Forward Current (mA)

www.vishay.com

Tj = 25 °C

1

0.1

0.01

Ptot = 500 mW
Tamb = 25 °C

30

20

10

0.001
0

0.2

0.4

0.6

0

1.0

0.8

15

VF - Forward Voltage (V)

95 9605

Fig. 7 - Forward Current vs. Forward Voltage

25

30

35

VZ - Z-Voltage (V)
Fig. 9 - Z-Current vs. Z-Voltage

1000

rZ - Differential Z-Resistance (Ω)

100

80

IZ - Z-Current (mA)

20

95 9607

Ptot = 500 mW
Tamb = 25 °C
60

40

20

IZ = 1 mA
100

5 mA
10 10 mA

Tj = 25 °C

1

0
0

4

6

8

12

10

15

20

25

VZ - Z-Voltage (V)

95 9606

Fig. 8 - Z-Current vs. Z-Voltage
Zthp - Thermal Resistance for Pulse Cond. (K/W)

5

0

20

VZ - Z-Voltage (V)

95 9604

Fig. 10 - Differential Z-Resistance vs. Z-Voltage

1000

tp/T = 0.5

100

tp/T = 0.2
Single Pulse

RthJA = 300 K/W
T = Tj max. - Tamb

10

tp/T = 0.01
tp/T = 0.1

tp/T = 0.02

tp/T = 0.05

1
10-1

iZM = (- VZ + (VZ2 + 4rzj x T/Zthp) 1/2)/(2rzj)

100

101
tp - Pulse Length (ms)

102
95 9603

Fig. 11 - Thermal Response

Rev. 1.7, 06-May-13

Document Number: 85604
5
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

BZX55-Series
www.vishay.com

Vishay Semiconductors

PACKAGE DIMENSIONS in millimeters (inches): DO-35

3.9 max. [0.154]
3.1 min. [0.120]

26 min. [1.024]

1.3 [0.050]

26 min. [1.024]

1.7 [0.067]

Ø 0.4 min. [0.015]

Ø 0.6 max. [0.024]

Cathode Identification

Rev. 6 - Date: 19. December 2011
Document no.: SB-V-3906.04-031(4)
94 9366

Rev. 1.7, 06-May-13

Document Number: 85604
6
For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

Legal Disclaimer Notice
www.vishay.com

Vishay

Disclaimer

ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of
typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding
statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a
particular product with the properties described in the product specification is suitable for use in a particular application.
Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over
time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk.
Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document
or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.

Revision: 13-Jun-16

1

Document Number: 91000