UMMSZ52XXA

Preliminary

DIODE

UNISONICTECHNOLOGIESCO.,LTD

2 of 3

www.unisonic.com.tw

QW-R601-094.b



ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

RATINGS

UNIT

Zener Current

115

mA

Peak Forward Surge Current, 8.3ms Single Half

Sine-Wave Superimposed on Rated Load (Note 2)

4.0

A

Power Dissipation at 75°C (Note 1)

500

mW

Operating Junction Temperature

-50~+150

°C

Note: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

2. Mounted on 5.0mm

3. Measured on 8.3ms, single half sine-wave or equivalent square wave, duty cycle=4 pulses per minute

maximum.



ELECTRICAL CHARACTERISTICS

For UMMSZ5231A

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Nominal Zener Volage

5.0

5.1

5.2

V

Zener Impedance

17

Ω

1600

Ω

Reverse Leakage Current

5

µA

For UMMSZ5234A

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Nominal Zener Volage

6.08

6.2

6.32

V

Zener Impedance

7

Ω

1000

Ω

Reverse Leakage Current

5

µA

For UMMSZ5248A

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Nominal Zener Volage

17.64

18

18.36

V

Zener Impedance

21

Ω

600

Ω

Reverse Leakage Current

0.1

µA

For UMMSZ5250A

PARAMETER

SYMBOL

TEST CONDITIONS

MIN TYP MAX UNIT

Nominal Zener Volage

19.6

20

20.4

V

Zener Impedance

25

Ω

600

Ω

Reverse Leakage Current

0.1

µA