MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
Forward Voltage @ 200mA: 1.2 volts maximum
ELECTRICAL CHARACTERISTICS @ 25°C
CDI NOMINAL ZENER MAX. DC
TYPE ZENER TEST MAXIMUM ZENER IMPEDANCE ZENER MAX. REVERSE
NUMBER VOLTAGE CURRENT CURRENT LEAKAGE CURRENT
VZ@1
ZT
1
ZT
ZZT@ 1
ZTZZK
@ IZK=1mA 1
ZM
lR@ V
R
(NOTE 1) (NOTE 2) (NOTE 3)
VOLTS mA OHMS OHMS mA
µ
A VOLTS
CD3821 3.3 76 10 400 276 100 1
CD3821A 3.3 76 10 400 276 100 1
CD3822 3.6 69 10 400 252 75 1
CD3822A 3.6 69 10 400 252 75 1
CD3823 3.9 64 9 400 238 25 1
CD3823A 3.9 64 9 400 238 25 1
CD3824 4.3 58 9 400 213 5 1
CD3824A 4.3 58 9 400 213 5 1
CD3825 4.7 53 8 500 194 5 1
CD3825A 4.7 53 8 500 194 5 1
CD3826 5.1 49 7 550 178 3 1
CD3826A 5.1 49 7 550 178 3 1
CD3827 5.6 45 5 600 162 3 2
CD3827A 5.6 45 5 600 162 3 2
CD3828 6.2 41 2 700 146 3 3
CD3828A 6.2 41 2 700 146 3 3
NOTE 1 Zener voltage range equals nominal voltage + 5% for “A” Suffix No Suffix denotes + 10%.
"C" suffix denotes +
2%, "D" suffix denotes + 1%.
NOTE 2 Zener voltage is read using a pulse measurement, 10 milliseconds maximum.
NOTE 3 Zener impedance is derived by superimposing on 1
ZT
A 60Hz rms a.c. current equal
to 10% of 1ZT.
• 1N3821A THRU 1N3828A AVAILABLE IN JANHC
• PER MIL-PRF-19500/115
• 1 WATT CAPABILITY WITH PROPER HEAT SINKING
• ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE
• COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES,
WITH THE EXCEPTION OF SOLDER REFLOW
CD3821
thru
CD3828A
Backside is Cathode
FIGURE 1
DESIGN DATA
METALLIZATION:
Top: (Anode)......................Al
Back: (Cathode).............. ...Au
AL THICKNESS....... ....25,000
Å Min
GOLD THICKNESS........4,000
Å Min
CHIP THICKNESS..................10 Mils
CIRCUIT LAYOUT DATA:
For Zener operation, cathode
must be operated positive with
respect to anode.
TOLERANCES: ALL
Dimensions +
2 mils
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