TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http://www.microsemi.com
Gort Road Business Park, Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298
ZENER DIODE
– Monolithic Temperature Compensated Zener Reference Chips
– All Junctions Completely Protected with Silicon Dioxide
– Electrically Equivalent to 1N821 Thru 1N829
– Compatible with all Wire Bonding and Die Attach Techniques with
the Exception of Solder Reflow
QUALIFIED LEVELS
DEVICES
CD821 thru CD829A
JANHC
JANKC
MAXIMUM RATING AT 25°C
Operating Temperature:
-65°C to +175°C
Storage Temperature:
-65°C to +175°C
REVERSE LEAKAGE CURRENT
I
R
= 2μA @ 25°C & V
R
= 3Vdc
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C, unless otherwise specified)
TYPE
NUMBER
ZENER
VOLTAGE
ZENER
TEST
CURRENT
MAXIMUM
ZENER
IMPEDANCE
-55° to +100°
VOLTAGE
TEMPERATURE
STABILITY
3
A
T
C
EFFECTIVE
TEMPERATURE
COEFFICIENT
CD821
CD821A
CD823
CD823A
CD825
CD825A
CD826
CD827
CD827A
CD828
CD829
CD829A
V
ZT
@ I
ZT
VOLTS
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
6.2 – 6.9
5.9 – 6.5
5.9 – 6.5
I
ZT
mA
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
Z
ZT
(Note 1)
OHMS
15
13
15
13
15
13
15
15
13
15
15
13
V
ZT
(Note 2)
mV
96
96
48
48
19
19
20
9
9
10
5
5
% / °C
0.01
0.01
0.005
0.005
0.002
0.002
0.002
0.001
0.001
0.001
0.0005
0.0005
NOTE:
1. Zener impedance is derived by superimposing on I
ZT
A 60Hz rms a.c. current equal to 10%
of I
ZT
.
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
LDS-0052 Rev. 1 (101557)
Page 1 of 3
TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http://www.microsemi.com
Gort Road Business Park, Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT
Qualified per MIL-PRF-19500/159
CD821 thru CD829A
FIGURE 3
ZENER IMPEDANCE
VS.
OPERATING CURRENT
FIGURE 4
LDS-0052 Rev. 1 (101557)
Page 2 of 3
TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http://www.microsemi.com
Gort Road Business Park, Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298
PACKAGE DIMENSIONS
Symbol
A
B
C
D
E
F
G
H
J
K
L
M
N
Backside must be electrically isolated to ensure proper performance.
Dimensions
Inches
Millimeters
Min
Max Min Max
.0280 .0320 .711 .813
.0080 .0100 .203 .254
.0104 .0106 .264 .269
.0019 .0021 .048 .053
.0054 .0056 .137 .142
.0020 .0040 .050 .102
.0280 .0320 .711 .813
.0030 .0050 .076 .127
.0030 .0050 .076 .127
.0209 .0211 .531 .536
.0080 .0100 .203 .254
.0104 .0106 .264 .269
.0059 .0061 .150 .155
DESIGN DATA
Metallization:
Top: 1 (Cathode)
2 (Anode)
3 (Test pad)
Back:
Al thickness
Gold thickness
Chip thickness
Al
Al
Al
Au
25,000Å minimum.
4,000Å minimum.
.010 inch (0.25 mm) ±0.002 inch (+0.05 mm).
Circuit layout data:
For zener operation, cathode must be operated positive with respect to anode.
Test pad is for wire bond evaluation only. No electrical contact is made with test pad.
NOTES:
1. Dimensions are in inches unless otherwise indicated.
2. Millimeters are given for general information only.
3. In accordance with ASME Y14.5M, diameters are equivalent to
φx
symbology.
JANHC and JANKC (A-version) die dimensions.
LDS-0052 Rev. 1 (101557)
Page 3 of 3
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