ROHM UMZ6.8N Datasheet

Diodes

Zener Diode

UMZ6.8N

Applications

!

Constant voltage control
For the ESD measure of a signal line

External dimensions

!!!!

2.0±0.2

1.3±0.1

0.650.65

(Units: mm)

0.9±0.1

0.6

0.3

UMZ6.8N

Features

!

1) Small surface mounting type (UMD3)

2) Composite type with two cathode common elements

3) High reliability

ROHM : UMD3
EIAJ : SC-70

Construction

!!!!

JEDEC : SOT-323

Silicon epitaxial planar

Circuit

!!!!

Absolute maximum ratings

!!!!

Parameter Symbol Limits Unit
Power dissipation
Junction temperature 150 °C
Storage temperature °C

∗

Total of 2 elements

∗

(Ta=25°C)

P

Tj

Tstg

200 mW

−55~+150

6 C

2.1±0.1

1.25±0.1

0.3±0.1

(All pins have the same dimensions)

0.15±0.05

0~0.1

0.1Min.

Electrical characteristics

!!!!

Parameter Symbol Min. Typ. Max. Unit Conditions
Zener voltage
Reverse current
Operating resistance
Capacitance between terminals

(Ta=25°C)

Z

V

I

R

Z

Z

T

C

6.47 7.14 V IZ=5mA

−−0.5 VR=3.5V

−−40 Ω IZ=5mA

−

−

µA

9

−

pF

f=1MH

Z

, VR=5V

Diodes

Others

!!!!

Item

Device configuration

Judgment contents

Electrical characteristic curves

!!!!

10m

Charge/discharge capacitance : 200pF±10%
Discharge resistance : 400Ω ±10% Discharge resistance : 330Ω

5 repetitions
No spark or smoke emitted : ±25kV

No element destruction : ±20kV
No malfunction : ± 8kV

−25°C25°C 75°C 125°C

Standard1

(Ta=25°C)

IEC1000-4-2

Charge/discharge capacitance : 150pF

10 repetitions
No malfunction

Contact : ± 8kV
Suspended : ±15kV

300

UMZ6.8N

1m

100µ

10µ

ZENER CURRENT : Iz (A)

1µ

100n

5 678

ZENER VOLTAGE : Vz (V)

Fig.1 Zener voltage characteristic

100

10

DYNAMIC IMPEADANCE : Zz (Ω)

1

0.01 0.1 1 10
ZENER CURRENT : Iz (mA)

Fig.2 Operating resistance

Zener current characteristic

200

100

POWER DISSIPATION : Pd (mW)

0

25 50 100 150

0

AMBIENT TEMPERATURE : Ta (˚C)

Fig.3 Derating curve