• 1N3821AUR-1 thru 1N3828AUR-1 AVAILABLE IN JAN,
JANTX AND JAN-
TXV
PER MIL-PRF-19500/115
• LEADLESS PACKAGE FOR SURFACE MOUNT
• DOUBLE PLUG CONSTRUCTION
1N3821AUR-1
thru
1N3828AUR-1
and
CDLL3821 thru CDLL 3828A
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
DC Power Dissipation: 1 watt @ +TEC = 125°C
Power Derating: 20 mW / °C above TEC = 125°C
Forward Voltage @ 200mA = 1.2 volts maximum
ELECTRICAL CHARACTERISTICS @ 25°C
CDI
NOMINAL
ZENER
MAX. DC
TYPE
ZENER
TEST
NUMBER
VOLTAGE
CURRENT
VZ @ 1ZT
1ZT
ZZT @ 1ZT
OHMS
(NOTE 1)
MAXIMUM ZENER IMPEDANCE
(NOTE 3)
ZZK @ 1ZK=1mA
(NOTE 2)
ZENER
MAX. REVERSE
CURRENT
LEAKAGE CURRENT
1ZM
lR @ VR
VOLTS
mA
OHMS
mA
µA
VOLTS
CDLL3821
CDLL3821A
CDLL3822
CDLL3822A
3.3
3.3
3.6
3.6
76
76
69
69
10
10
10
10
400
400
400
400
276
276
252
252
100
100
75
75
1
1
1
1
CDLL3823
CDLL3823A
CDLL3824
CDLL3824A
3.9
3.9
4.3
4.3
64
64
58
58
9
9
9
9
400
400
400
400
238
238
213
213
25
25
5
5
1
1
1
1
CDLL3825
CDLL3825A
CDLL3826
CDLL3826A
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
CDLL3827
CDLL3827A
CDLL3828
CDLL3828A
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
DIM
D
F
G
G1
S
MILLIMETERS
MIN MAX
2.39
2.66
0.41
0.55
4.80
5.20
4.11 REF.
0.03 MIN.
INCHES
MIN MAX
.094 .105
.016 .022
.189 .205
.159 REF.
.001 MIN.
FIGURE 1
DESIGN DATA
CASE: DO-213AB, Hermetically sealed
glass case. (MELF, LL41)
LEAD FINISH: Tin / Lead
THERMAL RESISTANCE: (ROJEC): 50
°C/W maximum at L = 0 inch
THERMAL IMPEDANCE: (ZOJX): 15
°C/W maximum
POLARITY: Diode to be operated with the
banded (cathode) end positive.
MOUNTING POSITION: Any.
NOTE 1
No suffix = + 10% tolerance on nominal Zener voltage, suffix “A” signifies +5%, "C" suffix
signifies + 2% and "D" suffix signifies + 1%.
NOTE 2
Zener impedance is derived by superimposing on 1ZT A 60Hz rms a.c. current equal to
10% of 1ZT.
NOTE 3
Zener voltage is measured with the device junction in thermal equilibrium at an ambient
temperature of 25°C + 3°C.
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 A Suitable Match With This
Device.
6 LAKE STREET, LAWRENCE, MASSACHUSETTS 01841
PHONE (978) 620-2600
FAX (978) 689-0803
WEBSITE: http://www.microsemi.com
109
1N3821AUR-1 thru 1N3828AUR-1
and
CDLL3821A thru CDLL3828A
Pd, Rated Power
Dissipation (mW)
FIGURE 2
1000
800
600
400
200
0
0
25
50
75
100
125
150
TEC , End cap temperature (°C)
POWER DERATING CURVE
ZZT, Zener Impedance (OHMS)
1000
100
10
1
.1
1.0
10
OPERATING CURRENT lZT (mA)
FIGURE 3
ZENER IMPEDANCE
VS.
OPERATING CURRENT
110
100
175
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