22 COREY STREET, MELROSE, MASSACHUSETTS 02176

PHONE (781) 665-1071

FAX (781) 665-7379

WEBSITE: http://www.cdi-diodes.com

E-mail: mail@cdi-diodes.com

CDI

ZENER

ZENER

MAXIMUM

VOLTAGE

EFFECTIVE

TYPE

VOLTAGE

TEST

ZENER

TEMPERATURE

TEMPERATURE

NUMBER

CURRENT

IMPEDANCE

STABILITY

COEFFICIENT

V

Z

@ I

ZT

I

ZT

(Note 1)

∆V

ZT

Z

ZT

-55° to +100°

(Note 2)

VOLTS

mA

OHMS

mV

% / °C

CDLL821

5.9 - 6.5

7.5

15

96

0.01

CDLL821A

5.9 - 6.5

7.5

10

96

0.01

CDLL822 †

5.9 - 6.5

7.5

15

96

0.01

CDLL823

5.9 - 6.5

7.5

15

48

0.005

CDLL823A

5.9 - 6.5

7.5

10

48

0.005

CDLL824 †

5.9 - 6.5

7.5

15

48

0.005

CDLL825

5.9 - 6.5

7.5

15

19

0.002

CDLL825A

5.9 - 6.5

7.5

10

19

0.002

CDLL826

6.2 - 6.9

7.5

15

20

0.002

CDLL827

5.9 - 6.5

7.5

15

9

0.001

CDLL827A

5.9 - 6.5

7.5

10

9

0.001

CDLL828

6.2 - 6.9

7.5

15

10

0.001

CDLL829

5.9 - 6.5

7.5

15

5

0.0005

CDLL829A

5.9 - 6.5

7.5

10

5

0.0005

MAXIMUM RATINGS

Operating Temperature: -65°C to +175°C

Storage Temperature: -65°C to +175°C

DC Power Dissipation: 500mW @ +50°C

Power Derating: 4 mW / °C above +50°C

REVERSE LEAKAGE CURRENT

ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.

† Double Anode: Electrical Specifications Apply Under Both Bias Polarities.

NOTE 1

Zener impedance is derived by superimposing on lZT A 60Hz rms a.c. current

equal to 10% of lZT.

NOTE 2

The maximum allowable change observed over the entire temperature range i.e.,

the diode voltage will not exceed the specified mV at any discrete temperature

between the established limits, per JEDEC standard No.5.

FIGURE 1

DESIGN DATA

CASE: DO-213AA, Hermetically sealed

glass case. (MELF, SOD-80, LL34)

LEAD FINISH: Tin / Lead

POLARITY: Diode to be operated with

the banded (cathode) end positive.

MOUNTING POSITION: Any.

MOUNTING SURFACE SELECTION:

The Axial Coefficient of Expansion

(COE) Of this Device is Approximately

+6PPM/°C. The COE of the Mounting

Surface System Should Be Selected To

Provide A Suitable Match With This

Device.

• 1N821UR-1, 1N823UR-1, 1N825UR-1, 1N827UR-1 AND 1N829UR-1 AVAILABLE

IN

• TEMPERATURE COMPENSATED ZENER DIODES

• LEADLESS PACKAGE FOR SURFACE MOUNT

• 6.2 AND 6.55 VOLT NOMINAL ZENER VOLTAGES

• METALLURGICALLY BONDED, DOUBLE PLUG CONSTRUCTION

1N821UR-1 thru 1N829UR-1

and

CDLL821 thru CDLL829A

MILLIMETERS

INCHES

DIM

MIN

MAX

MIN

MAX

D

1.60

1.70

0.063 0.067

F

0.41

0.55

0.016 0.022

G

3.30

3.70

.130

.146

G1

2.54 REF.

.100 REF.

S

0.03 MIN.

.001 MIN.