GULL WING Zener Diodes 2,400+

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Part RoHS Manufacturer Diode Type Terminal Position Terminal Form No. of Terminals Surface Mount Package Shape Package Body Material Working Test Current Config Maximum Voltage Temperature Coefficient Nominal Reference Voltage Maximum Output Current Maximum Non Repetitive Peak Reverse Power Dissipation Maximum Forward Voltage (VF) Nominal Breakdown Voltage Maximum Reverse Recovery Time Technology Maximum Reverse Current No. of Elements Reverse Test Voltage Package Style (Meter) Sub-Category Maximum Voltage Tolerance Maximum Repetitive Peak Reverse Voltage Maximum Knee Impedance Maximum Operating Temperature Maximum Dynamic Impedance Minimum Operating Temperature Terminal Finish JESD-30 Code Moisture Sensitivity Level (MSL) Polarity Case Connection Qualification Maximum Power Dissipation Additional Features JEDEC-95 Code Maximum Clamping Voltage Minimum Breakdown Voltage Maximum Non Repetitive Peak Forward Current JESD-609 Code Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Diode Element Material Maximum Breakdown Voltage Reference Standard

BZX84C5V1LFHT116

ROHM

ZENER DIODE

DUAL

GULL WING

3

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

5.1 V

ZENER

1

SMALL OUTLINE

5.88 %

150 Cel

R-PDSO-G3

UNIDIRECTIONAL

.25 W

HIGH RELIABILITY

10

260

SILICON

AEC-Q101

MMSZ5222BT1G

Onsemi

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

20 mA

SINGLE

2.5 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

30 ohm

-55 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

Not Qualified

.5 W

e3

30

260

SILICON

MMSZ5242B-T1

Sangdest Microelectronics (Nanjing)

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

20 mA

SINGLE

12 V

ZENER

1

SMALL OUTLINE

5 %

R-PDSO-G2

1

UNIDIRECTIONAL

Not Qualified

.5 W

SILICON

MMSZ5242BT1

Onsemi

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

20 mA

SINGLE

12 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

30 ohm

-55 Cel

Tin/Lead (Sn/Pb)

R-PDSO-G2

1

UNIDIRECTIONAL

Not Qualified

.5 W

e0

30

235

SILICON

UMZ6.8KFHTL

ROHM

ZENER DIODE

DUAL

GULL WING

4

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SEPARATE, 2 ELEMENTS

6.8 V

ZENER

.5 uA

2

3.5 V

SMALL OUTLINE

2 %

150 Cel

R-PDSO-G4

UNIDIRECTIONAL

.2 W

HIGH RELIABILITY

10

260

SILICON

AEC-Q101

UMZ6.8KTL

ROHM

ZENER DIODE

DUAL

GULL WING

4

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SEPARATE, 2 ELEMENTS

6.8 V

ZENER

.5 uA

2

3.5 V

SMALL OUTLINE

Other Diodes

2.06 %

150 Cel

-55 Cel

R-PDSO-G4

UNIDIRECTIONAL

.2 W

HIGH RELIABILITY

10

260

SILICON

1PMT5929BT1G

Onsemi

ZENER DIODE

SINGLE

GULL WING

1

YES

SQUARE

PLASTIC/EPOXY

25 mA

SINGLE

15 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

9 ohm

-55 Cel

MATTE TIN

S-PSSO-G1

1

UNIDIRECTIONAL

CATHODE

Not Qualified

.5 W

DO-216AA

e3

30

260

SILICON

AZ23C3V3-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

3

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

COMMON ANODE, 2 ELEMENTS

3.3 V

ZENER

2

SMALL OUTLINE

5 %

150 Cel

-55 Cel

Matte Tin (Sn)

R-PDSO-G3

1

UNIDIRECTIONAL

.3 W

e3

10

260

SILICON

AZ23C5V6-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

3

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

COMMON ANODE, 2 ELEMENTS

5.6 V

ZENER

2

SMALL OUTLINE

5 %

150 Cel

-55 Cel

Matte Tin (Sn)

R-PDSO-G3

1

UNIDIRECTIONAL

.3 W

e3

10

260

SILICON

BZB84-B15,215

NXP Semiconductors

ZENER DIODE

DUAL

GULL WING

3

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

COMMON ANODE, 2 ELEMENTS

15 V

ZENER

2

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

30 ohm

-55 Cel

TIN

R-PDSO-G3

1

UNIDIRECTIONAL

.3 W

TO-236AB

e3

30

260

SILICON

AEC-Q101; IEC-60134

BZT52-C75X

Nexperia

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

2 mA

SINGLE

88.6 mV/Cel

74.5 V

ZENER

.05 uA

1

52.5 V

SMALL OUTLINE

6.04 %

400 ohm

150 Cel

175 ohm

-55 Cel

TIN

R-PDSO-G2

1

UNIDIRECTIONAL

.35 W

e3

30

260

SILICON

AEC-Q101; IEC-60134

BZT52B15-HE3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

15 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

30 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

10

260

SILICON

AEC-Q101

BZT52B4V3-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

-.1 mV/Cel

4.3 V

ZENER

1 uA

1

1 V

SMALL OUTLINE

Voltage Reference Diodes

2 %

500 ohm

150 Cel

90 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

10

260

SILICON

BZT52B75-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

2 mA

SINGLE

1.2 mV/Cel

75 V

ZENER

.1 uA

1

56 V

SMALL OUTLINE

Voltage Reference Diodes

2 %

500 ohm

150 Cel

250 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

10

260

SILICON

BZT52B7V5-HE3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

7.5 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

7 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

10

260

SILICON

AEC-Q101

BZT52C20-HE3-18

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

20 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

6 %

150 Cel

50 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

10

260

SILICON

AEC-Q101

BZT52C5V1-G3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

5.1 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5.88 %

150 Cel

60 ohm

-55 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

SILICON

BZT52C5V1-HE3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

5.1 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5.88 %

150 Cel

60 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

10

260

SILICON

AEC-Q101

BZT52C6V8-HE3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

6.8 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5.88 %

150 Cel

8 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

10

260

SILICON

AEC-Q101

BZT52C9V1SQ-7-F

Diodes Incorporated

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

9.1 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

6.08 %

150 Cel

15 ohm

-65 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

.2 W

HIGH RELIABILITY

e3

30

260

SILICON

AEC-Q101

BZX384-C3V9,115

NXP Semiconductors

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

3.9 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

600 ohm

-65 Cel

TIN

R-PDSO-G2

1

UNIDIRECTIONAL

Not Qualified

.3 W

e3

30

260

SILICON

BZX384B15-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

15 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

30 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.2 W

e3

10

260

SILICON

BZX384B15-E3-18

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

15 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

30 ohm

-55 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

.2 W

e3

SILICON

BZX384B3V3-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

3.3 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

95 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.2 W

e3

10

260

SILICON

BZX384B3V3-HE3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

3.3 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

95 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.2 W

e3

SILICON

AEC-Q101

BZX384B6V2-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

6.2 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

10 ohm

-55 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

.2 W

e3

SILICON

BZX384B7V5-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

7.5 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

15 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.2 W

e3

10

260

SILICON

BZX384B7V5-E3-18

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

7.5 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

15 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.2 W

e3

SILICON

BZX384C2V7-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

2.7 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

100 ohm

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.2 W

e3

10

260

SILICON

BZX384C2V7-G3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

2.7 V

ZENER

1

SMALL OUTLINE

5 %

150 Cel

-55 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

.2 W

e3

10

260

SILICON

AEC-Q101

BZX384C9V1-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

9.1 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

15 ohm

-55 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

.2 W

e3

SILICON

BZX84B2V4-HE3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

3

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

2.4 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

100 ohm

MATTE TIN

R-PDSO-G3

UNIDIRECTIONAL

.3 W

e3

SILICON

AEC-Q101

BZX84C3V3-HE3-18

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

3

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

3.3 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

95 ohm

MATTE TIN

R-PDSO-G3

1

UNIDIRECTIONAL

.3 W

e3

SILICON

AEC-Q101

BZX84C5V1-HE3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

3

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

5.1 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

60 ohm

MATTE TIN

R-PDSO-G3

1

UNIDIRECTIONAL

.3 W

e3

SILICON

AEC-Q101

HZU3.3B2TRF-E

Renesas Electronics

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

3.38 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

3.7 %

150 Cel

130 ohm

TIN BISMUTH

R-PDSO-G2

1

UNIDIRECTIONAL

Not Qualified

.2 W

e6

SILICON

MM3Z20VT1G

Onsemi

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

20 V

.9 V

ZENER

.05 uA

1

14 V

SMALL OUTLINE

Voltage Reference Diodes

6 %

100 ohm

150 Cel

55 ohm

-65 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

Not Qualified

.3 W

e3

30

260

SILICON

MM3Z39VT1G

Onsemi

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

2 mA

SINGLE

39 V

.9 V

ZENER

.05 uA

1

27.3 V

SMALL OUTLINE

Voltage Reference Diodes

5.13 %

500 ohm

150 Cel

130 ohm

-65 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

Not Qualified

.3 W

e3

30

260

SILICON

MM3Z3V0T1G

Onsemi

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

5 mA

SINGLE

3 V

.9 V

ZENER

10 uA

1

1 V

SMALL OUTLINE

Voltage Reference Diodes

6.67 %

1000 ohm

150 Cel

100 ohm

-65 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

Not Qualified

.3 W

e3

30

260

SILICON

MMBZ4702-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

3

YES

RECTANGULAR

PLASTIC/EPOXY

.05 mA

SINGLE

15 V

ZENER

1

SMALL OUTLINE

5 %

150 Cel

-55 Cel

MATTE TIN

R-PDSO-G3

1

UNIDIRECTIONAL

.35 W

e3

10

260

SILICON

MMBZ5221BS-7-F

Diodes Incorporated

ZENER DIODE

DUAL

GULL WING

6

YES

RECTANGULAR

PLASTIC/EPOXY

20 mA

SEPARATE, 2 ELEMENTS

2.4 V

.9 V

ZENER

100 uA

2

1 V

SMALL OUTLINE

Other Diodes

5 %

150 Cel

-65 Cel

MATTE TIN

R-PDSO-G6

1

UNIDIRECTIONAL

Not Qualified

.2 W

e3

30

260

SILICON

MMBZ5230BLT1G

Onsemi

ZENER DIODE

DUAL

GULL WING

3

YES

RECTANGULAR

PLASTIC/EPOXY

20 mA

SINGLE

4.7 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5.11 %

150 Cel

19 ohm

-65 Cel

MATTE TIN

R-PDSO-G3

1

UNIDIRECTIONAL

Not Qualified

.225 W

TO-236AB

e3

30

260

SILICON

MMBZ5233B

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

3

YES

RECTANGULAR

PLASTIC/EPOXY

20 mA

SINGLE

6 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

7 ohm

MATTE TIN

R-PDSO-G3

1

UNIDIRECTIONAL

Not Qualified

.225 W

TO-236AB

e3

SILICON

MMSZ4687-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

.05 mA

SINGLE

4.3 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

-55 Cel

Matte Tin (Sn)

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

10

260

SILICON

MMSZ4700-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

.05 mA

SINGLE

13 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

-55 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

SILICON

MMSZ4705-E3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

.05 mA

SINGLE

18 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

-55 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

SILICON

MMSZ4714T1G

Onsemi

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

.05 mA

SINGLE

33 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

-55 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

Not Qualified

.5 W

e3

30

260

SILICON

MMSZ5221BT1G

Onsemi

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

20 mA

SINGLE

2.4 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

5 %

150 Cel

30 ohm

-55 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

Not Qualified

.5 W

e3

30

260

SILICON

MMSZ5232C-HE3-08

Vishay Intertechnology

ZENER DIODE

DUAL

GULL WING

2

YES

RECTANGULAR

PLASTIC/EPOXY

20 mA

SINGLE

5.6 V

ZENER

1

SMALL OUTLINE

Voltage Reference Diodes

2 %

150 Cel

11 ohm

-55 Cel

MATTE TIN

R-PDSO-G2

1

UNIDIRECTIONAL

.5 W

e3

SILICON

AEC-Q101

Zener Diodes

Zener diodes are electronic components that are designed to operate in the reverse breakdown region of their P-N junction, providing a stable and predictable voltage output. They are commonly used in electronic circuits as voltage regulators, voltage references, and surge protectors.

Zener diodes operate based on the properties of their P-N junction, which is designed to have a narrow depletion region and a low breakdown voltage. When a reverse voltage is applied to the diode, the depletion region widens, allowing a small reverse current to flow. As the voltage across the diode increases, the reverse current increases exponentially, maintaining a stable voltage across the diode.

Zener diodes offer several advantages over other types of voltage regulators, such as simplicity, low cost, and high efficiency. They do not require any external components, such as capacitors or inductors, and they can provide a stable output voltage over a wide range of input voltages and temperatures.

Zener diodes are commonly used in electronic circuits that require a stable voltage source, such as power supplies, battery chargers, and voltage regulators. They come in different package sizes and voltage ratings, depending on the application and the required performance.