22 COREY STREET, MELROSE, MASSACHUSETTS 02176
PHONE (781) 665-1071 FAX (781) 665-7379
WEBSITE: http://www.cdi-diodes.com E-mail: mail@cdi-diodes.com
FIGURE 1
DESIGN DATA
CASE: Hermetically sealed glass
case, DO41.
LEAD MATERIAL: Copper clad steel
LEAD FINISH: Tin / Lead
THERMAL RESISTANCE: (R
O
JEC
):
80 ˚C/W maximum at L = .375 inch
THERMAL IMPEDANCE: (Z
OJX
): 15
˚C/W maximum
POLARITY: Diode to be operated with
the banded (cathode) end positive.
MOUNTING POSITION: Any.
ELECTRICAL CHARACTERISTICS @ 25°C
CDI NOMINAL ZENER MAX. DC
TYPE ZENER TEST MAXIMUM ZENER IMPEDANCE ZENER MAX. REVERSE
NUMBER VOLTAGE CURRENT CURRENT LEAKAGE CURRENT
V
Z
@1
ZT
1
ZT
Z
ZT
@ 1
ZT
Z
ZK
@ 1
ZK=1mA
1
ZM
l
R
@ V
R
(NOTE 1) (NOTE 3) (NOTE 2)
VOLTS mA OHMS OHMS mA
µ
A VOLTS
1N3821 3.3 76 10 400 276 100 1
1N3821A 3.3 76 10 400 276 100 1
1N3822 3.6 69 10 400 252 75 1
1N3822A 3.6 69 10 400 252 75 1
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
1N3824A 4.3 58 9 400 213 5 1
1N3825 4.7 53 8 500 194 5 1
1N3825A 4.7 53 8 500 194 5 1
1N3826 5.1 49 7 550 178 3 1
1N3826A 5.1 49 7 550 178 3 1
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
1N3828A 6.2 41 2 700 146 3 3
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
DC Power Dissipation: 1 watt @T
L
= 95°C
Power Derating: 12.5 mW / °C above T
L
= 95°C
Forward Voltage @ 200mA = 1.2 volts maximum
NOTE 1
No suffix = + 10% tolerance on nominal Zener voltage, suffix “A” signifies +5%, suffix “C”
signifies +
2%, suffix “D” signifies + 1%.
NOTE 2 Zener impedance is derived by superimposing on 1
ZT
A 60Hz rms a.c. current equal to
10% of 1
ZT.
NOTE 3Zener voltage is measured with the device junction in thermal equilibrium at an ambient
temperature of 25°C +
3°C.
• 1N3821A-1 THRU 1N3828A-1 AVAILABLE IN JAN, JANTX AND JANTXV
PER MIL-PRF-19500/115
• 1 WATT ZENER DIODE
• DOUBLE PLUG CONSTRUCTION
• METALLURGICALLY BONDED
1N3821A thru 1N3828A
and
1N3821A-1 thru 1N3828A-1
