High-reliability discrete products
and engineering services since 1977
FEATURES
1N4954-1N4996
5 WATT GLASS ZENER DIODE
Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.
Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix.
MAXIMUM RATINGS
Operating Temperature:
Storage Temperature:
Power Dissipation:
Thermal Resistance:
Thermal Impedance @ 10ms:
Forward Voltage:
-65 to +175°C
-65 to +175°C
5 Watts @ T
L
= 65°C at 3/8” from body, derate linearly to zero @ 175°C.
22°C/W junction to lead at 3/8” from body
1.8°C/W
1.50 V @ 1.0A
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C unless otherwise specified)
Electrical Specifications @ 25°C
Nominal
Zener
Voltage
V
Z
@ I
ZT
Volts
Maximum Ratings
Maximum
Temperature
Coeff.
α
Vz
@ I
ZT
%/°C
Type
Test
Current
I
ZT
mA
Maximum Zener
Impedance
Z
Z
@ I
ZT
OHMS
Z
ZK
@ I
ZK
1mA
OHMS
Voltage
Regulation
V
Z
(note 1)
Volts
Maximum Reverse
Leakage Current
Voltage
I
R
µA
V
R
Volts
Maximum
Continuous
Current
I
ZM
mA
Surge
Current
I
ZSM
8.3ms square
wave
Amps
1N4954
1N4955
1N4956
1N4957
1N4958
1N4959
1N4960
1N4961
1N4962
1N4963
1N4964
1N4965
1N4966
1N4967
1N4968
1N4969
1N4970
1N4971
1N4972
1N4973
1N4974
1N4975
6.8
7.5
8.2
9.1
10.0
11.0
12.0
13.0
15.0
16.0
18.0
20.0
22.0
24.0
27.0
30.0
33.0
36.0
39.0
43.0
47.0
51.0
175
175
150
150
125
125
100
100
75
75
65
65
50
50
50
40
40
30
30
30
25
25
1.0
1.5
1.5
2.0
2.0
2.5
2.5
3.0
3.5
3.5
4.0
4.5
5.0
5.0
6.0
8
10
11
14
20
25
27
1000
800
600
400
125
130
140
145
150
155
160
165
170
175
180
190
200
220
230
240
250
270
0.7
0.7
0.7
0.7
0.8
0.8
0.8
0.9
1.0
1.1
1.2
1.5
1.8
2.0
2.0
2.5
2.8
3.0
3.0
3.3
3.5
4.0
150
100
50
25
25
10
10
10
5
5
5
2
2
2
2
2
2
2
2
2
2
2
5.2
5.7
6.2
6.9
7.6
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
.05
.06
.06
.06
.07
.07
.07
.08
.08
.08
.085
.085
.085
.090
.090
.090
.095
.095
.095
.095
.095
.095
700
630
580
520
475
430
395
365
315
294
264
237
216
198
176
158
144
132
122
110
100
92
29.3
26.4
24.0
22.0
20.0
19.0
18.0
16.0
12.0
10.0
9.0
8.0
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.2
3.0
Rev. 20120710
High-reliability discrete products
and engineering services since 1977
1N4954-1N4996
5 WATT GLASS ZENER DIODE
Electrical Specifications @ 25°C
Maximum Ratings
Maximum
Temperature
Coeff.
α
Vz
@ I
ZT
%/°C
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C unless otherwise specified)
Nominal
Zener
Voltage
V
Z
@ I
ZT
Volts
Type
Test
Current
I
ZT
mA
Maximum Zener
Impedance
Z
Z
@ I
ZT
OHMS
Z
ZK
@ I
ZK
1mA
OHMS
Voltage
Regulation
V
Z
(note 1)
Volts
Maximum Reverse
Leakage Current
Voltage
I
R
µA
V
R
Volts
Maximum
Continuous
Current
I
ZM
mA
Surge
Current
I
ZSM
8.3ms square
wave
Amps
1N4976
1N4977
1N4978
1N4979
1N4980
1N4981
1N4982
1N4983
1N4984
1N4985
1N4986
1N4987
1N4988
1N4989
1N4990
1N4991
1N4992
1N4993
1N4994
1N4995
1N4996
56.0
62.0
68.0
75.0
82.0
91.0
100.0
110.0
120.0
130.0
150.0
160.0
180.0
200.0
220.0
240.0
270.0
300.0
330.0
360.0
390.0
20
20
20
20
15
15
12
12
10
10
8
8
5
5
5
5
5
4
4
3
3
35
42
50
55
80
90
110
125
170
190
330
350
450
500
550
650
800
950
1175
1400
1800
320
400
500
620
720
760
800
1000
1150
1250
1500
1650
1750
1850
2000
2050
2100
2150
2200
2300
2500
4.4
5.0
5.5
6.0
6.6
7.5
8.0
9.0
10
11
13
14
16
18
19
22
25
28
32
35
40
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
42.6
47.1
51.7
56.0
62.2
69.2
76.0
83.6
91.2
98.8
114.0
121.6
136.8
152
167
182
206
228
251
274
297
.095
.100
.100
.100
.100
.100
.100
.100
.100
.105
.105
.105
.110
.110
.115
.115
.120
.120
.120
.120
.120
84
76
70
63.0
58.0
52.5
47.5
43.0
39.5
36.6
31.6
29.4
26.4
23.6
21.6
19.8
17.5
15.6
14.4
13.0
12.0
2.8
2.5
2.2
2.0
1.8
1.6
1.4
1.2
1.00
0.80
0.75
0.70
0.60
0.50
0.50
0.40
0.35
0.30
0.25
0.22
0.20
Standard voltage tolerances are ±5% with no suffix, suffix C ±2% and D suffix is ±1%.
Note 1: Maximum voltage change
ΔV
Z
between 10% of I
ZM
and 50% of I
ZM
.
Rev. 20120710
High-reliability discrete products
and engineering services since 1977
MECHANICAL CHARACTERISTICS
Case:
Marking:
Polarity:
Digi F
Body painted, alpha-numeric
Cathode band
1N4954-1N4996
5 WATT GLASS ZENER DIODE
Rev. 20120710
High-reliability discrete products
and engineering services since 1977
1N4954-1N4996
5 WATT GLASS ZENER DIODE
Rev. 20120710
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