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Page 1
1N3821UR-1 thru 1N3830AUR-1, e3 or
MLL3821 thru MLL3830A, e3
SCOTTSDALE DIVISION
LEADLESS GLASS ZENER DIODES
WWW .
Microsemi
.C
OM
*ELECTRICAL CHARACTERISTICS @ 25
o
C
INDUSTRY
TYPE
NUMBER**
(NOTE 1)
MICROSEM
I PART
NUMBER
(NOTE 3)
NOMINAL
ZENER
VOLTAGE
ZENER
TEST
CURRENT
MAXIMUM ZENER IMPEDANCE
(Note 2)
MAXIMUM
ZENER
CURRENT
MAXIMUM
REVERSE
CURRENT
TYPICAL
TEMP.COEFF.
OF ZENER
VOLTAGE
V
Z
@ I
ZT
(NOTE 1)
VOLTS
I
ZM
Z
ZT
@ I
ZT
OHMS
I
ZT
mA
Z
ZK
@ I
ZK
= 1 mA
OHMS
(Note 3)
mA
I
R
@ V
R
μA
Volt
s
α
VZ
%/
o
C
1N3821UR-1
1N3821AUR-1
1N3822UR-1
1N3822AUR-1
1N3823UR-1
1N3823AUR-1
1N3824UR-1
1N3824AUR-1
1N3825UR-1
1N3825AUR-1
1N3826UR-1
1N3826AUR-1
1N3827UR-1
1N3827AUR-1
1N3828UR-1
1N3828AUR-1
1N3829UR-1
1N3829AUR-1
1N3830UR-1
1N3830AUR-1
MLL3821
MLL3821A
MLL3822
MLL3822A
MLL3823
MLL3823A
MLL3824
MLL3824A
MLL3825
MLL3825A
MLL3826
MLL3826A
MLL3827
MLL3827A
MLL3828
MLL3828A
MLL3829
MLL3829A
MLL3830
MLL3830A
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
6.8
6.8
7.5
7.5
76
76
69
69
64
64
58
58
53
53
49
49
45
45
41
41
37
37
34
34
10
10
10
10
9
9
9
9
8
8
7
7
5
5
2
2
1.5
1.5
1.5
1.5
400
400
400
400
400
400
400
400
500
500
550
550
600
600
700
700
500
500
250
250
414
414
378
378
357
357
320
320
291
291
267
267
243
243
219
219
200
200
182
182
100
100
100
100
50
50
10
10
10
10
10
10
10
10
10
10
10
10
10
10
1
1
1
1
1
1
1
1
1
1
1
1
2
2
3
3
3
3
3
3
-.066
-.066
-.058
-.058
-.046
-.046
-.033
-.033
-.015
-.015
+/-.010
+/-.010
+.030
+.030
+.049
+.049
+.053
+.053
+.057
+.057
*
JEDEC registered data for 1N3821 thru 3830A equivalents except for lower reverse (leakage) current I
R
and higher maximum zener current I
ZM
.
** When applicable, add MQ, MX, or MV prefix to the 1N3821AUR-1 thru 1N3828AUR-1 part numbers for screening options in accordance with MIL-PRF-19500/115.
NOTE 1:
Suffix A signifies a +/-5% tolerance on nominal zener voltage. No suffix designates +/-10% tolerance. If tighter tolerance is
required, suffix C is used to identify +/-2%; and suffix D is to identify +/-1% tolerance. V
Z
is measured with the diode in
thermal equilibrium in 25
o
C still air. The test currents (I
ZT
) at the listed nominal zener voltages provide a constant 0.25 watts
for this device series per JEDEC registration.
NOTE 2:
The zener impedance is derived when a 60 cycle ac current having an rms value equal to 10% of the dc zener current
(I
ZT
or I
ZK
) is superimposed on I
ZT
or I
ZK
. Zener impedance is measured at 2 points to ensure a sharp knee on the
breakdown curve and to eliminate unstable units. See MicroNote 202 for variation in dynamic impedance with different
zener currents.
NOTE 3:
This product series has been previously identified as MLL3821 thru MLL3830A by Microsemi. This alternate name
may still be used, however the Industry name of 1N3821UR-1 thru 1N3830UR-1 is preferred.
