CDIDI CD829A, CD829, CD828, CD827A, CD827 Datasheet
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MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
REVERSE LEAKAGE CURRENT
lR= 2 µA @ 25°C & VR= 3 Vdc
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.
-55° TO +100°
CDI ZENER ZENER MAXIMUM VOLTAGE EFFECTIVE
TYPE VOLTAGE TEST ZENER TEMPERATURE TEMPERATURE
NUMBER CURRENT IMPEDANCE STABILITY COEFFICIENT
VZT@ I
ZT
I
ZT
Z
ZT
∆V
ZT
(Note 1) (Note 2)
VOLTS mA OHMS mV % / °C
CD821 5.9 - 6.5 7.5 15 96 0.01
CD821A 5.9 - 6.5 7.5 10 96 0.01
CD823 5.9 - 6.5 7.5 15 48 0.005
CD823A 5.9 - 6.5 7.5 10 48 0.005
CD825 5.9 - 6.5 7.5 15 19 0.002
CD825A 5.9 - 6.5 7.5 10 19 0.002
CD826 5.9 - 6.5 7.5 15 20 0.002
CD827 5.9 - 6.5 7.5 15 9 0.001
CD827A 5.9 - 6.5 7.5 10 9 0.001
CD828 6.2 - 6.9 7.5 15 10 0.001
CD829 5.9 - 6.5 7.5 15 5 0.0005
CD829A 5.9 - 6.5 7.5 10 5 0.0005
NOTE 1 Zener impedance is derived by superimposing on lZTA 60Hz rms a.c.
current equal to 10% of l
ZT.
NOTE 2 The maximum allowable change observed over the entire temperature
range i.e.,the diode voltage will not exceed the specified mV at any
discrete temperature between the established limits, per JEDEC
standard No.5.
Backside is not cathode
and must be electrically isolated
T = Metallization Test Pad
DESIGN DATA
METALLIZATION:
Top: C (Cathode) ...................Al
A (Anode) ...................... Al
Back: .......................................Au
AL THICKNESS.........25,000
Å Min
GOLD THICKNESS......4,000 Å Min
CHIP THICKNESS...............10 Mils
CIRCUIT LAYOUT DATA:
Backside must be electrically
isolated.
Backside is not cathode.
For Zener operation cathode must
be operated positive with respect
to anode.
TOLERANCES: ALL
Dimensions +
2 mils
• 1N821 THRU 1N829 AVAILABLE IN JANHC AND JANKC
PER MIL-PRF-19500/159
• MONOLITHIC TEMPERATURE COMPENSATED ZENER REFERENCE CHIPS
• ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE
• ELECTRICALLY EQUIVALENT TO 1N821 THRU 1N829
• COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES,
WITH THE EXCEPTION OF SOLDER REFLOW
CD821
thru
CD829A
22 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
CD821 thru CD829A
FIGURE 4
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT
+.0010
+.0005
0
-.0005
-.0010
CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)
5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5
OPERATING CURRENT lZT(mA)
5678910
OPERATING CURRENT lZT(mA)
FIGURE 3
ZENER IMPEDANCE
VS.
OPERATING CURRENT
500
100
50
10
5
1
ZENER IMPEDANCE Z
ZT
(OHMS)
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