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• 1N3821A THRU 1N3828A AVAILABLE IN
CD3821
thru
CD3828A
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
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
NOMINAL
ZENER
TYPE
ZENER
TEST
NUMBER
VOLTAGE
VZ @ 1ZT
CURRENT
1ZT
(NOTE 1)
MAX. DC
MAXIMUM ZENER IMPEDANCE
ZZT @ 1ZT
(NOTE 2)
ZZK @ IZK=1mA
ZENER
MAX. REVERSE
CURRENT
1
ZM
LEAKAGE CURRENT
lR @ VR
(NOTE 3)
FIGURE 1
OHMS
mA
µ A
VOLTS
10
10
10
10
400
400
400
400
276
276
252
252
100
100
75
75
1
1
1
1
64
64
58
58
9
9
9
9
400
400
400
400
238
238
213
213
25
25
5
5
1
1
1
1
4.7
4.7
5.1
5.1
53
53
49
49
8
8
7
7
500
500
550
550
194
194
178
178
5
5
3
3
1
1
1
1
5.6
5.6
6.2
6.2
45
45
41
41
5
5
2
2
600
600
700
700
162
162
146
146
3
3
3
3
2
2
3
3
VOLTS
mA
CD3821
CD3821A
CD3822
CD3822A
3.3
3.3
3.6
3.6
76
76
69
69
CD3823
CD3823A
CD3824
CD3824A
3.9
3.9
4.3
4.3
CD3825
CD3825A
CD3826
CD3826A
CD3827
CD3827A
CD3828
CD3828A
OHMS
Backside is Cathode
NOTE 1
Zener voltage range equals nominal voltage + 5% for “A” Suffix No Suffix denotes + 10%.
"C" suffix denotes + 2%, "D" suffix denotes + 1%.
NOTE 2
Zener voltage is read using a pulse measurement, 10 milliseconds maximum.
NOTE 3
Zener impedance is derived by superimposing on 1
A 60Hz rms a.c. current equal
ZT
to 10% of 1 .
ZT
6 LAKE STREET, LAWRENCE,
PHONE (978) 620-2600
WEBSITE: http://www.microsemi.com
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
M A S S A C H U S E T T S 01841
FAX (978) 689-0803
187
CD3821A
thru
CD3828A
1000
500
400
300
3.3 VOLT
ZENER IMPEDANCE ZZT (OHMS)
200
100
5.1 VOLT
50
40
30
20
10
5
4
6.2 VOLT
3
2
1
.1
.2
.5
1
2
5
10
20
50
100
OPERATING CURRENT IZT (mA)
FIGURE 3
ZENER IMPEDANCE VS. OPERATING CURRENT
188