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
FIGURE 1
DESIGN DATA
CASE: DO-213AA, Hermetically sealed
glass case. (MELF, SOD-80, LL34)
LEAD FINISH: Tin / Lead
POLARITY: Diode to be operated with
the banded (cathode) end positive.
MOUNTING POSITION: Any.
MOUNTING SURFACE SELECTION:
The Axial Coefficient of Expansion
(COE) Of this Device is Approximately
+6PPM/C. The COE of the Mounting
Surface System Should Be Selected To
Provide A Suitable Match With This
Device.
MILLIMETERS INCHES
DIM
MIN
MAX
MIN
MAX
D
1.60
1.70
0.063 0.067
F
0.41
0.55
0.016 0.022
G
3.30
3.70
.130
.146
G1
2.54 REF.
.100 REF.
S
0.03 MIN.
.001 MIN.
1N935BUR-1, 1N937BUR-1 and 1N938BUR-1 AVAILABLE IN
JAN, JANTX, JANTXV AND JANS
PER MIL-PRF-19500/156
TEMPERATURE COMPENSATED ZENER REFERENCE DIODES
LEADLESS PACKAGE FOR SURFACE MOUNT
9.0 VOLT NOMINAL ZENER VOLTAGE
METALLURGICALLY BONDED, DOUBLE PLUG CONSTRUCTION
1N935BUR-1 thru 1N938BUR-1
and
CDLL935 thru CDLL938B
NOTE 1 Zener impedance is derived by superimposing on lZTA 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.
CDI ZENER ZENER MAXIMUM VOLTAGE TEMPERATURE EFFECTIVE
TYPE
VOLTAGE
TEST
ZENER
TEMPERATURE
RANGE
TEMPERATURE
NUMBER
CURRENT
IMPEDANCE
STABILITY
COEFFICIENT
VZ@ I ZT
I ZT
ZZT
V ZT
MAXIMUM
(Note 1)
(Note 2)
VOLTS
mA
OHMS
mV
C
% / C
CDLL935
8.55 - 9.45
7.5
20
67
0 to + 75
0.01
CDLL935A
8.55 - 9.45
7.5
20
139
-55 to +100
0.01
CDLL935B
8.55 - 9.45
7.5
20
184
-55 to +150
0.01
CDLL936
8.55 - 9.45
7.5
20
34
0 to + 75
0.005
CDLL936A
8.55 - 9.45
7.5
20
70
-55 to +100
0.005
CDLL936B
8.55 - 9.45
7.5
20
92
-55 to +150
0.005
CDLL937
8.55 - 9.45
7.5
20
13
0 to + 75
0.002
CDLL937A
8.55 - 9.45
7.5
20
28
-55 to +100
0.002
CDLL937B
8.55 - 9.45
7.5
20
37
-55 to +150
0.002
CDLL938
8.55 - 9.45
7.5
20
6.7
0 to + 75
0.001
CDLL938A
8.55 - 9.45
7.5
20
13.9
-55 to +100
0.001
CDLL938B
8.55 - 9.45
7.5
20
19
-55 to +150
0.001
MAXIMUM RATINGS
Operating Temperature: -65C to +175C
Storage Temperature: -65C to +175C
DC Power Dissipation: 500mW @ +50C
Power Derating: 4 mW / C above +50C
REVERSE LEAKAGE CURRENT
l
R
= 10
A @ 25C & V
R
= 6 Vdc
ELECTRICAL CHARACTERISTICS @ 25C, unless otherwise specified.
CDLL935
thru
CDLL938B
0
25
50
75
100
125
150
175
TL, Ambient temperature (C)
FIGURE 2
POWER DERATING CURVE
600
500
400
300
200
100
0
Pd,
Rated
Power
Dissipation
(
mW)
5
6
7
8
9
10
OPERATING CURRENT l
ZT
(mA)
FIGURE 3
ZENER IMPEDANCE VS. OPERATING CURRENT
CHANGE
IN
TEMPERA
TURE
COEFFICIENT
(
%/C)
100
50
40
30
20
10
5
4
3
2
1
ZENER
IMPEDANCE
Z
ZT
(OHMS)
+.0015
+.0010
+.0005
0
-.0005
-.0010
-.0015
5
6
7
8
9
10
OPERATING CURRENT l
ZT
(mA)
FIGURE 4
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT
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