CDIDI CD937A, CD937, CD936A, CD936, CD935A Datasheet
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MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.
MAXIMUM
ZENER ZENER MAXIMUM VOLTAGE TEMPERATURE EFFECTIVE
TYPE VOLTAGE TEST ZENER TEMPERATURE RANGE TEMPERATURE
NUMBER CURRENT IMPEDANCE STABILITY COEFFICIENT
VZT@ I
ZT
I
ZT
Z
ZT
V
ZT
(Note 3) (Note 1) (Note 2)
VOLTS mA OHMS mV °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
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.
NOTE 3 Zener voltage range equals 9.0 volts +
5%.
FIGURE 1
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
• 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 AT TACH TECHNIQUES,
WITH THE EXCEPTION OF SOLDER REFLOW
CD935
thru
CD937A
38 MILS
23 MILS
38 MILS
23 MILS
10 MILS
8 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
CD935 thru CD937A
5678910
OPERATING CURRENT lZT(mA)
FIGURE 2
ZENER IMPEDANCE
VS.
OPERATING CURRENT
1000
500
200
100
50
20
10
ZENER IMPEDANCE ZZT (OHMS)
5678910
OPERATING CURRENT lZT(mA)
FIGURE 3
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT
+.0015
+.0010
+.0005
0
-.0005
-.0010
-.0015
CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)
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