1N3821A-1 THRU 1N3828A-1 AVAILABLE IN JAN, JANTX AND JANTXV
1N3821A thru 1N3828A
and
PER MIL-PRF-19500/115
1N3821A-1 thru 1N3828A-1
1 WATT ZENER DIODE
DOUBLE PLUG CONSTRUCTION
METALLURGICALLY BONDED
MAXIMUM RATINGS
Operating Temperature: -65C to +175C
Storage Temperature: -65C to +175C
DC Power Dissipation: 1 watt @T = 95C
L
Power Derating: 12.5 mW / C above T = 95C
L
Forward Voltage @ 200mA = 1.2 volts maximum
ELECTRICAL CHARACTERISTICS @ 25C
CDI NOMINAL ZENER MAX. DC
TYPE ZENER TEST MAXIMUM ZENERIMPEDANCE ZENER MAX. REVERSE
NUMBER VOLTAGE CURRENT CURRENT LEAKAGE CURRENT
V @1 1 Z @ 1 Z @ 1 1 l @ V
Z ZT ZT ZT ZT ZK ZK=1mA ZM R R
(NOTE 1) (NOTE 3) (NOTE 2)
VOLTS mA OHMS OHMS mA A VOLTS
1N3821 3.3 76 10 400 276 100 1
1N3821A 3.3 76 10 400 276 100 1
FIGURE 1
1N3822 3.6 69 10 400 252 75 1
1N3822A 3.6 69 10 400 252 75 1
DESIGN DATA
1N3823 3.9 64 9 400 238 25 1
1N3823A 3.9 64 9 400 238 25 1
1N3824 4.3 58 9 400 213 5 1
CASE: Hermetically sealed glass
1N3824A 4.3 58 9 400 213 5 1
case, DO41.
1N3825 4.7 53 8 500 194 5 1
1N3825A 4.7 53 8 500 194 5 1
LEAD MATERIAL: Copper clad steel
1N3826 5.1 49 7 550 178 3 1
1N3826A 5.1 49 7 550 178 3 1
LEAD FINISH: Tin / Lead
1N3827 5.6 45 5 600 162 3 2
1N3827A 5.6 45 5 600 162 3 2
1N3828 6.2 41 2 700 146 3 3
THERMAL RESISTANCE: (R ):
OJEC
1N3828A 6.2 41 2 700 146 3 3
80 C/W maximum at L = .375 inch
THERMAL IMPEDANCE: (Z ): 15
OJX
C/W maximum
POLARITY: Diode to be operated with
NOTE 1 No suffix = + 10% tolerance on nominal Zener voltage, suffix A signifies +5%, suffix C
the banded (cathode) end positive.
signifies + 2%, suffix D signifies + 1%.
NOTE 2 Zener impedance is derived by superimposing on 1 A 60Hz rms a.c. current equal to
ZT
MOUNTING POSITION: Any.
10% of 1
ZT.
NOTE 3 Zener voltage is measured with the device junction in thermal equilibrium at an ambient
temperature of 25C + 3C.
6 LAKE STREET, LAWRENCE, MASSACHUSETTS 01841
PHONE (978) 620-2600 FAX (978) 689-0803
WEBSITE: 1N3826A
1N3821A thru 1N3828A
and
1N3821A-1 thru 1N3828A-1
FIGURE 2
1000
800
600
400
200
0
0 25 50 75 100 125 150 175
T , Lead temperature (C), 3/8 from body
L
POWER DERATING CURVE
1000
100
1N3822A
10
1N3829A
1
.1 1.0 10 100
OPERATING CURRENT l (mA)
ZT
FIGURE 3
ZENER IMPEDANCE VS. OPERATING CURRENT
30
Pd, Rated Power
Dissipation (mW)
Z , Zener Impedance (OHMS)
ZT