DIGITRON SEMICONDUCTORS
1N935A,B-1N940A,B
MAXIMUM RATINGS
Characteristics
Junction and storage temperatures
DC power dissipation
Solder temperatures
Values
-65 to +175°C
500mW @ T
L
= 25°C and maximum current I
ZM
of 50 mA. For optimum voltage
temperature stability, I
Z
= 7.5mA (less than 75 mW in dissipated power)
260°C for 10 s (maximum)
9.0 VOLT TEMPERATURE COMPENSATED
ZENER REFERENCE DIODES
ELECTRICAL CHARACTERISTICS
Part number
Zener voltage
V
Z
@ I
ZT
Notes 1 & 4
Zener test
current
I
ZT
mA
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
Maximum
zener
impedance
Z
ZT
@ I
ZT
Note 2
Voltage
temperature
stability
V
ZT
maximum
Notes 3 & 4
Temperature
range
Effective
temperature
coefficient
α
VZ
%/°C
0.01
0.01
0.01
0.005
0.005
0.005
0.002
0.002
0.002
0.001
0.001
0.001
0.0005
0.0005
0.0005
0.0002
0.0002
0.0002
Notes 1
Volts
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
8.55-9.45
Ohms
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
mV
67
139
184
33
69
92
13
27
37
6
13
18
3
7
9
1.3
2.7
3.7
°C
0 to +75
-55 to +100
-55 to +150
0 to +75
-55 to +100
-55 to +150
0 to +75
-55 to +100
-55 to +150
0 to +75
-55 to +100
-55 to +150
0 to +75
-55 to +100
-55 to +150
0 to +75
-55 to +100
-55 to +150
1N935
1N935A
1N935B
1N936
1N936A
1N936B
1N937
1N937A
1N937B
1N938
1N938A
1N938B
1N939
1N939A
1N939B
1N940
1N940A
1N940B
Note 1. For devices with tighter tolerances, use a nominal voltage of 9.2V and add a hyphenated suffix to the part number for desired tolerance at the end of the part number,
ie. – 2%
Note 2. Measured by superimposing 0.75mA ac rms on 7.5 mA dc @ 25°C
Note 3. The maximum allowable change observed over the entire temperature range, i.e. the diode voltage will not exceed the specified mV change at any discrete temperature
between the established limits
Note 4. Voltage measurements to be performed 15 seconds after application of dc current
MECHANICAL CHARACTERISTICS
Case
Marking
Polarity
DO-35 hermetically sealed glass
Body painted, alpha numeric
Cathode band
Min
BD
BL
LD
LL
-
-
0.018
1.000
Inches
Dimensions
Millimeters
Max
Min
-
-
0.457
25.400
Max
2.718
7.620
0.559
-
0.107
0.300
0.022
-
144 Market Street
Kenilworth NJ 07033 USA
phone +1.908.245-7200
fax +1.908.245-0555
sales@digitroncorp.com
www.digitroncorp.com
Rev. 20120730
DIGITRON SEMICONDUCTORS
1N935A,B-1N940A,B
9.0 VOLT TEMPERATURE COMPENSATED
ZENER REFERENCE DIODES
Power derating curve
Typical change of temperature coefficient with change in operating current
Typical change of zener voltage with change in operating current
Available Non-RoHS (standard) or RoHS compliant (add PBF suffix).
Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.
144 Market Street
Kenilworth NJ 07033 USA
phone +1.908.245-7200
fax +1.908.245-0555
sales@digitroncorp.com
www.digitroncorp.com
Rev. 20120730
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