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1.5 WATT SILICON ZENER DIODE
1N5921B-LFR THRU 1N5956B-LFR
FEATURES
PLASTIC PACKAGE HAS UNDERWRITERS LABORATORY
FLAMMABILITY CLASSIFICATION 94V-0
LOW ZENER IMPEDANCE
EXCELLENT CLAMPING CAPABILITY
LEAD FREE
MECHANICAL DATA
CASE: MOLDED PLASTIC, DO41, DIMENSIONS
IN INCHES AND (MILLIMETERS)
TERMINALS: AXIAL LEADS SOLDERABLE PER
MIL-STD-202,METHOD 208
POLARITY: COLOR BAND DENOTES CATHODE
MOUNTING POSITION: ANY
WEIGHT: .34 GRAM
1.0(25.4)
MIN
.034(0.9)
.028(0.7)
.205(5.2)
.166(4.2)
.107(2.7)
.080(2.0)
1.0(25.4)
MIN
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS RATINGS AT 25°C AMBIENT TEMPERATURE UNLESS OTHERWISE SPECIFIED
STORAGE AND OPERATING TEMPERATURE RANGE -55 TO + 150°C
ELECTRICAL CHARACTERISTICS (TL=30°C UNLESS OTHERWISE NOTED VF=1.5V MAX, @IF = 200mA DC FOR ALL TYPES)
JEDEC
TYPE
NOMINAL
ZENER VOLTS
V
Z
@I
ZT
VOLTS
TEST
CURRENT
I
ZT
mA
MAXIMUM ZENER IMPEDANCE
MAX. REVERSE
LEAKAGE CURRENT
MAXIMUM DC
ZENER
CURRENT
I
ZM
mA DC
1N5921B-LFR
1N5922B-LFR
1N5923B-LFR
1N5924B-LFR
1N5925B-LFR
1N5926B-LFR
1N5927B-LFR
1N5928B-LFR
1N5929B-LFR
1N5930B-LFR
1N5931B-LFR
1N5932B-LFR
1N5933B-LFR
1N5934B-LFR
1N5935B-LFR
1N5936B-LFR
1N5937B-LFR
1N5938B-LFR
1N5939B-LFR
1N5940B-LFR
1N5941B-LFR
1N5942B-LFR
1N5943B-LFR
1N5944B-LFR
1N5945B-LFR
1N5946B-LFR
1N5947B-LFR
1N5948B-LFR
1N5949B-LFR
1N5950B-LFR
1N5951B-LFR
1N5952B-LFR
1N5953B-LFR
1N5954B-LFR
1N5955B-LFR
1N5956B-LFR
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
110
120
130
150
160
180
200
55.1
50.0
45.7
41.2
37.5
34.1
31.2
28.8
25.0
23.4
20.8
18.7
17.0
15.6
13.9
12.5
11.4
10.4
9.6
8.7
8.0
7.3
6.7
6.0
5.5
5.0
4.6
4.1
3.7
3.4
3.1
2.9
2.5
2.3
2.1
1.9
Z
ZT
@ I
ZT
Ohms
2.5
3
3.5
4
4.5
5.5
6.5
7
9
10
12
14
17.5
19
23
26
33
38
45
53
67
70
86
100
120
140
160
200
250
300
380
450
600
700
900
1200
Z
ZK
@
Ohms
200
400
400
500
500
550
550
550
600
600
650
650
650
700
700
750
800
850
900
950
1000
1100
1300
1500
1700
2000
2500
3000
3100
4000
4500
5000
6000
6500
7000
8000
I
ZK
mA
1
0.
5
0.5
0.5
0.
25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
I
R
μA
5
5
5
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
@
V
R
VOLTS
5.2
6
6.5
7
8
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56
62.2
69.2
76
83.6
91.2
98.8
114
121.6
136.8
152
220
200
182
164
150
136
125
115
100
93
83
75
68
62
55
50
45
41
38
34
31
29
26
24
22
20
18
16
15
13
12
11
10
9
8
7
NOTE: SUFFIX “B” FOR ± 5%
1N5921B-LFR THRU 1N5956B-LFR
Page: 1
RATINGS AND CHARACTERISTIC CURVES 1N5921B-LFR THRU 1N5956B-LFR
TEMPERATURE COEFFICIENT RANGES
(90% of the Units are in the Ranges Indicated)
θ
VZ
,
TEMPERATURE COEFFICIENT
Figure. 1 - Units To 12 Volts
θ
vz
TEMPERATURE COEFFICIENT
10
8
6
(MV/℃)＠I
ZT
4
2
0
-2
-4
3
4
5
6
7
8
9
10
V
Z
, ZENER VOLTAGE
＠I
ZT
(VOLTS)
11
12
RANGE
Figure. 2 - Units 10 To 1400 Volts
1000
500
200
(MV/℃)＠I
ZT
100
50
20
10
10
20
50
100
200
400
1000
V
Z
, ZENER VOLTAGE
＠I
ZT
(VOLTS)
ZENER VOLTAGE versus ZENER CURRENT
Figure. 3 - V
Z
=3.3thru 10 Volts
100
50
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0
1
2
3
4
5
6
7
8
9
10
I
Z,
ZENER CURRENT (mA)
I
Z,
ZENER CURRENT (mA)
100
50
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
0
10
20 30
40
50
60 70
80
90 100
Figure. 4 - V
Z
=12 thru 82 Volts
V
Z
, ZENER VOLTAGE
＠I
ZT
(VOLTS)
Figure. 5 - V
Z
=100 thru 400 Volts
10
I
Z,
ZENER CURRENT (mA)
5
2
1
0.5
0.2
0.1
100
150
200
250
300
350
400
450
θ
JL
, JUNCTION TO LEAD THERMAL
80
70
60
RESISTANCE (℃/W)
50
40
30
20
10
0
0
V
Z
, ZENER VOLTAGE
＠I
ZT
(VOLTS)
Figure. 6 - Typical Thermal Resistance
L
L
T
L
PRIMARY PATH OF CONDUCTION IS
THROUGH THE CATHODE LEAD
1/8
1/4
3/8
1/2
5/3
3/4
7/8
1
V
Z
, ZENER VOLTAGE
＠I
ZT
(VOLTS)
L, LEAD LENGTH TO HEAT SINK (INCH)
Figure. 7 - Power Temperature Derating Curve
2.5
P
D
,MAXIMUM DISSIPATION
(WATTS)
2.0
1.5
1.0
0.5
0
20
40
60
80 100 120 140 160
T
L
, LEAD TEMPERATURE (
O
C)
180 200
1N5921B-LFR THRU 1N5956B-LFR
Page: 2
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