CD821 thru CD829A
TC Zener Diode Chip Series
Rev. V3
Features
•
Monolithic Temperature Compensated Zener
Reference Chips
•
Electrically Equivalent to 1N821
-
1N829A
Die
Description
These 0.5 W zener diodes are electrically equivalent
to the 1N821
-
1N829A series diodes. All junctions
are completely protected with silicon dioxide. They
are compatible with all wire bonding and die attach
techniques with the exception of solder reflow.
These diodes are available in JANHC and JANKC
per MIL-PRF-19500/159.
Electrical Specifications: T
A
= +25°C (unless otherwise specified)
Nominal
Zener
Voltage
V
ZT
@ I
ZT1
V
CD821
CD821A
CD823
CD823A
CD825
CD825A
CD826
CD827
CD827A
CD828
CD829
CD829A
5.9
-
6.5
Zener
Test
Current
I
ZT
mA
7.5
Maximum
Zener
Impedance
1
Z
ZT
@ I
ZT
Ω
15
13
15
13
15
13
15
15
13
15
15
13
-55°C
to +100° C
Voltage
Temperature
Stability
2
3V
ZT
@ I
ZT
mV
96
Effective
Temperature
Coefficent
% / °C
0.01
Part #
5.9
-
6.5
7.5
48
19
19
20
9
9
10
5
0.005
5.9
-
6.5
5.9
-
6.5
5.9
-
6.5
6.2
-
6.9
5.9
-
6.5
7.5
0.002
7.5
0.001
7.5
0.0005
1. Zener impedance is derived by superimposing on I
ZT
at 60 HZ RMS AC 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 specialized mV at
any discrete temperature between the established limits, per JEDEC standard No.5.
* Restrictions on Hazardous Substances, European Union Directive 2011/65/EU.
1
VPT Components and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.vptcomponents.com
for additional data sheets and product information.
For further information and support please visit:
info@vptcomponents.com
CD821 thru CD829A
TC Zener Diode Chip Series
Rev. V3
Absolute Maximum Ratings
5,6
Reverse Leakage Current
Operating Temperature
Storage Temperature
I
R
= 2 µA, V
R
= 3 V
DC
-65°C
to +175°C
-65°C
to +175°C
Zener Impedance vs. Operating Current
5. Exceeding any one or combination of these limits may cause
permanent damage to this device.
6.
VPT Components does not recommend sustained operation
near these survivability limits.
Change in Temperature Coefficient vs. Operating Current
2
VPT Components and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.vptcomponents.com
for additional data sheets and product information.
For further information and support please visit:
info@vptcomponents.com
CD821 thru CD829A
TC Zener Diode Chip Series
Rev. V3
Die
Top: A (anode) AL
C (cathode) AL
Back: Au
AL Thickness:
25,000 Å Minimum
Gold Thickness:
4,000 Å Minimum
Chip Thickness:
10 mils
Circuit Layout Data: For Zener operation, cathode must be
operated positive with respect to anode.
Metallization:
3
VPT Components and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.vptcomponents.com
for additional data sheets and product information.
For further information and support please visit:
info@vptcomponents.com
CD821 thru CD829A
TC Zener Diode Chip Series
Rev. V3
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Components assumes no liability whatsoever. VPT Components assumes no responsibility for errors or omissions in these
materials. VPT Components may make changes to specifications and product descriptions at any time, without notice. VPT
Components makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or
incompatibilities arising from future changes to its specifications and product descriptions. No license, express or implied,
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4
VPT Components and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit
www.vptcomponents.com
for additional data sheets and product information.
For further information and support please visit:
info@vptcomponents.com
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