CDI-DIODE CD821A

• 1N821 THRU 1N829 AVAILABLE IN JANHC AND JANKC
PER MIL-PRF-19500/159
CD821
thru
• MONOLITHIC TEMPERATURE COMPENSATED ZENER REFERENCE CHIPS
• ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE
CD829A
• ELECTRICALLY EQUIVALENT TO 1N821 THRU 1N829
• COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES,
WITH THE EXCEPTION OF SOLDER REFLOW
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
REVERSE LEAKAGE CURRENT
22 MILS
lR = 2 µA @ 25°C & VR = 3 Vdc
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.
CDI
TYPE
NUMBER
ZENER
VOLTAGE
V
ZT
@I
ZT
ZENER
TEST
CURRENT
I
ZT
MAXIMUM
ZENER
IMPEDANCE
ZZT
-55° TO +100°
VOLTAGE
EFFECTIVE
TEMPERATURE TEMPERATURE
STABILITY
COEFFICIENT
∆VZT
(Note 1)
(Note 2)
VOLTS
mA
OHMS
mV
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
% / °C
NOTE 1
Zener impedance is derived by superimposing on lZT A 60Hz rms a.c.
current equal to 10% of lZT.
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
22 COREY STREET, MELROSE, MASSACHUSETTS 02176
PHONE (781) 665-1071
FAX (781) 665-7379
WEBSITE: http://www.cdi-diodes.com
E-mail: [email protected]
CD821
thru
CD829A
ZENER IMPEDANCE ZZT (OHMS)
500
100
50
10
5
1
5
6
7
8
9
10
OPERATING CURRENT lZT (mA)
FIGURE 3
CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)
ZENER IMPEDANCE
VS.
OPERATING CURRENT
+.0010
+.0005
0
-.0005
-.0010
5.5
6.0
6.5
7.0
7.5
8.0
8.5
OPERATING CURRENT lZT (mA)
9.0
9.5
FIGURE 4
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT