1N3821 Datasheet, PDF (2/3 Pages) Microsemi Corporation – SILICON 1 WATT ZENER DIODES

SCOTTSDALE DIVISION
1N3821 thru 1N3830A
1 Watt Metal Case Zener Diodes
*ELECTRICAL CHARACTERISTICS @ 25^oC
NOMINAL
ZENER
ZENER
JEDEC
TYPE
NUMBER
VOLTAGE
V_Z @ I_ZT
(Note 1)
TEST
CURRENT
I_ZT
Volts
mA
1N3821
3.3
76
1N3821A
3.3
76
1N3822
3.6
69
1N3822A
3.6
69
1N3823
3.9
64
1N3823A
3.9
64
1N3824
4.3
58
1N3824A
4.3
58
1N3825
4.7
53
1N3825A
4.7
53
1N3826
5.1
49
1N3826A
5.1
49
1N3827
5.6
45
1N3827A
5.6
45
1N3828
6.2
41
1N3828A
6.2
41
1N3829
6.8
37
1N3829A
6.8
37
1N3830
7.5
34
1N3830A
7.5
34
*JEDEC Registered Data.
MAXIMUM ZENER IMPEDANCE
(Note 2)
Z_ZT @ I_ZT
Z_ZK @ I_ZK = 1mA
OHMS
OHMS
10
400
10
400
10
400
10
400
9
400
9
400
9
400
9
400
8
500
8
500
7
550
7
550
5
600
5
600
2
700
2
700
1.5
500
1.5
500
1.5
250
1.5
250
MAXIMUM
ZENER
CURRENT
I_ZM
(Note 3)
mA
276
276
252
252
238
238
213
213
194
194
178
178
162
162
146
146
133
133
121
121
MAXIMUM
REVERSE
LEAKAGE
CURRENT
I_R @ V_R
µA
Volts
100
1
100
1
100
1
100
1
50
1
50
1
10
1
10
1
10
1
10
1
10
1
10
1
10
2
10
2
10
3
10
3
10
3
10
3
10
3
10
3
TYPICAL
TEMP. COEFF.
OF ZENER
VOLTAGE
α_VZ
%/^oC
-.066
-.066
-.058
-.058
-.046
-.046
-.033
-.033
-.015
-.015
+/-.010
+/-.010
+.030
+.030
+.049
+.049
+.053
+.053
+.057
+.057
NOTES: 1.
2.
3.
The JEDEC type numbers shown with suffix A have a standard tolerance of +/-5% on the nominal zener voltage. V_Z measured
with device in thermal equilibrium in 25^oC still air and mounted in test clips, ¾” from unit body. if tighter tolerance on V_Z is required,
consult factory.
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.
Allowance has been made for the increase in V_Z due to Z_Z and for the increase in junction temperature as the unit approaches
thermal equilibrium at the power dissipation of 1 watt.
GRAPHS
T_L
T_A
T_L – Lead Temperature (^oC) 3/8” from body
or T_A on FR4 PC Board
FIGURE 1
Power Derating
FIGURE 2
Temperature Coeff. vs. Zener Voltage
Copyright  2003
11-06-2003 REV A
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, [phone], Fax: [phone]
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