ROHM UDZS9.1B, UDZS7.5B, UDZS8.2B, UDZS6.8B, UDZS5.6B Datasheet

Diodes

Zener diode

UDZS Series

UDZS Series

Applications

!!!!

Constant voltage control

Features

!!!!

1) Compact, 2-pin mini-mold type for high-density
mounting. (UMD2)

2) Non-wire bonding structure improves.

3) High demand voltage range (5.1V-10V) is
manufactured on high-efficient non-wire bonding
production line.

Construction

!!!!

Silicon epitaxial planar

Absolute maximum ratings

!!!!

Parameter
Power dissipation
Junction temperature
Storage temperature
Operating temperature

(Ta = 25°C)

Symbol Limits Unit

Tj
Tstg
Topr

200
150

−55~+150

−55~+150

External dimensions

!!!!

2.5±0.2

(All leads have the same dimensions.)

* Type No. stamped on body in digital marking.

(Units : mm)

1.7±0.1

0.3±0.05

1.25±0.1

ROHM : UMD2
EIAJ : SC-76
JEDEC : SOD-323

mWP

°C
°C
°C

CATHODE MARK

+0.2

0.7

−0.1

+0.1

0.1

−0.05

Markings

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UDZS 5.1B UDZS 7.5B2A2H
UDZS 5.6B UDZS 8.2B2C2J
UDZS 6.2B UDZS 9.1B2E2L
UDZS 6.8B UDZS 10B2F50

(Ex.) UDZS 5.1B

(Type No.)

Product name

A2

Type No.

Product name

Type No.

Diodes

Electrical characteristics

!!!!

Type

UDZS 5.1B 4.980 5.200 500 2 1.55 80 5 0.5
UDZS 5.6B 5.490 5.730 200 1 2.55 60 5 0.5
UDZS 6.2B 6.060 6.330 100 1 3.05 60 5 0.5
UDZS 6.8B 6.650 6.930 60 0.5 3.55 40 5 0.5
UDZS 7.5B 7.280 7.600 60 0.5 4.05 30 5 0.5
UDZS 8.2B 8.020 8.360 60 0.5 5.05 30 5 0.5
UDZS 9.1B 8.850 9.230 60 0.5 6.05 30 5 0.5
UDZS 10B 9.770 10.210 60 0.1 7.05 30 5 0.5

Notes) 1. The Zener voltage (Vz) is measured 40ms after power is supplied.

2. The operating resistances (Z

Electrical characteristic curves

!!!!

100m

10m

(A)

Z

1m

100µ

10µ

1µ

ZENER CURRENT : I

100n

10n

0 5 10 15

Fig.1 Zener voltage characteristics

5.1

5.6

6.2

6.8

ZENER VOLTAGE : VZ (V)

(Ta = 25°C)

Zener voltage

VZ (V)

Min. Max. Max.

z

, Zzk) are measured by superimposing a minute alternating current on the regulated current (Iz).

(Ta = 25°C)

300

7.5

8.2

9.1

10

200

100

POWER DISSIPATION : Pd (mW)

0

05025 100 150

AMBIENT TEMPERATURE : Ta (°C)

Operating resistance

ZZ (Ω)

Z

I

(mA)

Fig.2 Derating curve

Rising operating resistance

ZZk (Ω)

Z

I

(mA)

Max.

0.10

0.08

0.06

0.04

0.02

0.00

−0.02

−0.04

−0.06

−0.08

TEMP. COEFFICIENT CHARACTERISTICS (% / ˚C)

210 20 30

Fig.3 Zener voltage-temp.
coefficient characteristics

UDZS Series

Reverse current

IR (µA)

Z

I

(mA)

∗UDZS series : VZ = 5.1V~10V

Max.

Iz=5mA

ZENER VOLTAGE : Vz (V)

Iz=500µA

V

(V)

R