• 1N3821A THRU 1N3828A AVAILABLE IN
JANHC
• PER MIL-PRF-19500/115
• 1 WATT CAPABILITY WITH PROPER HEAT SINKING
• ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE
• COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES,
WITH THE EXCEPTION OF SOLDER REFLOW
CD3821
thru
CD3828A
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
Forward Voltage @ 200mA: 1.2 volts maximum
ELECTRICAL CHARACTERISTICS @ 25°C
CDI
TYPE
NUMBER
(NOTE 1)
NOMINAL
ZENER
VOLTAGE
VZ @ 1ZT
(NOTE 2)
VOLTS
CD3821
CD3821A
CD3822
CD3822A
CD3823
CD3823A
CD3824
CD3824A
CD3825
CD3825A
CD3826
CD3826A
CD3827
CD3827A
CD3828
CD3828A
3.3
3.3
3.6
3.6
3.9
3.9
4.3
4.3
4.7
4.7
5.1
5.1
5.6
5.6
6.2
6.2
mA
76
76
69
69
64
64
58
58
53
53
49
49
45
45
41
41
OHMS
10
10
10
10
9
9
9
9
8
8
7
7
5
5
2
2
ZENER
TEST
CURRENT
1ZT
MAXIMUM ZENER IMPEDANCE
ZZT @ 1ZT
ZZK @ IZK=1mA
MAX. DC
ZENER
CURRENT
1
ZM
MAX. REVERSE
LEAKAGE CURRENT
l @V
R
R
Backside is Cathode
(NOTE 3)
OHMS
400
400
400
400
400
400
400
400
500
500
550
550
600
600
700
700
mA
276
276
252
252
238
238
213
213
194
194
178
178
162
162
146
146
FIGURE 1
µ
A
100
100
75
75
25
25
5
5
5
5
3
3
3
3
3
3
VOLTS
1
1
1
1
1
1
1
1
1
1
1
1
2
2
3
3
DESIGN DATA
METALLIZATION:
Top: (Anode)......................Al
Back: (Cathode).............. ...Au
AL THICKNESS.......
....25,000
Å
Min
GOLD THICKNESS........4,000
Å
Min
CHIP THICKNESS.............
.....10 Mils
CIRCUIT LAYOUT DATA:
For Zener operation, cathode
must be operated positive with
respect to anode.
TOLERANCES:
ALL
Dimensions + 2 mils
NOTE 1
NOTE 2
NOTE 3
Zener voltage range equals nominal voltage + 5% for “A” Suffix No Suffix denotes + 10%.
"C" suffix denotes + 2%, "D" suffix denotes + 1%.
Zener voltage is read using a pulse measurement, 10 milliseconds maximum.
Zener impedance is derived by superimposing on 1 A 60Hz rms a.c. current equal
ZT
to 10% of 1 .
ZT
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
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