CDI-DIODE CD937A 9.0 volt nominal zener voltage 5% Datasheet

• MONOLITHIC TEMPERATURE COMPENSATED ZENER REFERENCE CHIPS
CD935
thru
• ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE
• 9.0 VOLT NOMINAL ZENER VOLTAGE + 5%
CD937A
• ELECTRICALLY SIMILAR TO 1N935 THRU 1N937A
• COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES,
WITH THE EXCEPTION OF SOLDER REFLOW
38 MILS
MAXIMUM RATINGS
23 MILS
FIGURE 1
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.
TYPE
NUMBER
ZENER
VOLTAGE
V
ZT
@I
ZT
ZENER
TEST
CURRENT
I
ZT
(Note 3)
VOLTS
mA
MAXIMUM
MAXIMUM
VOLTAGE
ZENER
TEMPERATURE
IMPEDANCE
STABILITY
ZZT
V
ZT
(Note 1)
(Note 2)
OHMS
mV
8 MILS
23 MILS
38 MILS
10 MILS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
TEMPERATURE
EFFECTIVE
RANGE
TEMPERATURE
COEFFICIENT
°C
% / °C
CD935
9.0
7.5
30
67
0 to + 75
0.01
CD935A
9.0
7.5
30
139
-55 to + 100
0.01
CD936
9.0
7.5
30
34
0 to + 75
0.005
CD936A
9.0
7.5
30
70
-55 to + 100
0.005
CD937
9.0
7.5
30
13
0 to + 75
0.002
CD937A
9.0
7.5
30
28
-55 to + 100
0.002
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
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.
NOTE 3
Zener voltage range equals 9.0 volts + 5%.
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]
CD935
thru
CD937A
1000
ZENER IMPEDANCE ZZT (OHMS)
500
200
100
50
20
10
5
6
7
8
OPERATING CURRENT lZT (mA)
9
10
FIGURE 2
ZENER IMPEDANCE
VS.
OPERATING CURRENT
CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)
+.0015
+.0010
+.0005
0
-.0005
-.0010
-.0015
5
6
7
8
OPERATING CURRENT lZT (mA)
9
FIGURE 3
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT
10
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