• MONOLITHIC TEMPERATURE COMPENSATED ZENER REFERENCE CHIPS
• ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE
• 9.0 VOLT NOMINAL ZENER VOLTAGE + 5%
• ELECTRICALLY SIMILAR TO 1N935 THRU 1N937A
• COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES,
WITH THE EXCEPTION OF SOLDER REFLOW
CD935
thru
CD937A
38 MILS
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
38 MILS
23 MILS
23 MILS
ELECTRICAL CHARACTERISTICS
@ 25°C, unless otherwise specified.
MAXIMUM
MAXIMUM
VOLTAGE
ZENER
TEMPERATURE
IMPEDANCE
STABILITY
ZZT
V
ZT
(Note 1)
mA
7.5
7.5
7.5
7.5
7.5
7.5
OHMS
30
30
30
30
30
30
(Note 2)
mV
67
139
34
70
13
28
°C
0 to + 75
-55 to + 100
0 to + 75
-55 to + 100
0 to + 75
-55 to + 100
% / °C
0.01
0.01
0.005
0.005
0.002
0.002
FIGURE 1
TYPE
NUMBER
ZENER
VOLTAGE
V
@I
ZT
ZT
ZENER
TEST
CURRENT
I
ZT
TEMPERATURE
EFFECTIVE
RANGE
TEMPERATURE
COEFFICIENT
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 3)
VOLTS
CD935
CD935A
CD936
CD936A
CD937
CD937A
9.0
9.0
9.0
9.0
9.0
9.0
NOTE 1
Zener impedance is derived by superimposing on lZT A 60Hz rms a.c.
current equal to 10% of lZT.
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.
Zener voltage range equals 9.0 volts + 5%.
NOTE 2
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
NOTE 3
6 LAKE STREET, LAWRENCE,
PHONE (978) 620-2600
WEBSITE: http://www.microsemi.com
M A S S A C H U S E T T S 01841
FAX (978) 689-0803
179
8 MILS
10 MILS
CD935
1000
500
ZENER IMPEDANCE Z
ZT
(OHMS)
thru
CD937A
200
100
50
20
10
5
6
7
8
OPERATING CURRENT lZT (mA)
9
10
FIGURE 2
ZENER IMPEDANCE
VS.
OPERATING CURRENT
+.0015
CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)
+.0010
+.0005
0
-.0005
-.0010
-.0015
5
6
7
8
OPERATING CURRENT lZT (mA)
9
10
FIGURE 3
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT
180
Embedded System
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