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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
l
R
= 2 µA@ 25°C & V
R
= 3 Vdc
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 l
ZT
A60Hz rms a.c. current
equalto 10% of l
ZT
.
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 ASuitable Match With This
Device.
• 1N821UR-1, 1N823UR-1, 1N825UR-1, 1N827UR-1 AND 1N829UR-1 AVAILABLE
IN JAN, JANTX, JANTXV AND JANS PER MIL-PRF-19500/159
• 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.