1N957B through 1N992B Series
ELECTRICAL CHARACTERISTICS (TA = 25ºC unless otherwise noted, VF = 1.5 V Max @ IF = 200mA for all types)
(Note 7.)
(Note 8.)
Zener Voltage
VZ (Volts)
Nom
Zener Impedance
Leakage Current
IR @ VR
IZM
@ IZT
(mA)
ZZT @ IZT
ZZK @ IZK
(Note 9.)
Device
Device
Min
Max
(mA)
(Volts)
(mA)
Marking
(Ω)
(Ω)
(µA)
(Note 6.)
1N977B
1N978B
1N979B
1N980B
1N981B
1N982B
1N983B
1N984B
1N985B
1N986B
1N987B
1N988B
1N989B
1N990B
1N991B
1N992B
1N977B
1N978B
1N979B
1N980B
1N981B
1N982B
1N983B
1N984B
1N985B
1N986B
1N987B
1N988B
1N989B
1N990B
1N991B
1N992B
44.65
48.45
53.2
58.9
64.6
71.25
77.9
86.45
95
47
51
49.35
53.55
58.8
65.1
71.4
78.75
86.1
95.55
105
2.7
2.5
2.2
2
105
125
1500
1500
2000
2000
2000
2000
3000
3000
3000
4000
4500
5000
6000
6500
7100
8000
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
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
35.8
38.8
42.6
47.1
51.7
56
6.4
5.9
5.4
4.9
4.5
4.1
3.7
3.3
3
56
150
62
185
68
1.8
1.7
1.5
1.4
1.3
1.1
1
230
75
270
82
330
62.2
69.2
76
91
400
100
110
120
130
150
160
180
200
500
104.5
114
115.5
126
750
83.6
91.2
98.8
114
2.7
2.5
2.3
2
900
123.5
142.5
152
136.5
157.5
168
0.95
0.85
0.8
0.68
0.65
1100
1500
1700
2200
2500
121.6
136.8
152
1.9
1.7
1.5
171
189
190
210
6. TOLERANCE AND TYPE NUMBER DESIGNATION (VZ)
The type numbers listed have a standard tolerance on the nominal zener voltage of ±5%.
7. ZENER VOLTAGE (VZ) MEASUREMENT
Nominal zener voltage is measured with the device junction in the thermal equilibrium at the lead temperature (TL) at 30°C
±1°C and 3/8” lead length.
8. ZENER IMPEDANCE (ZZ) DERIVATION
Z
ZT and ZZK are measured by dividing the AC voltage drop across the device by the AC current applied. The specified limits
are for IZ(AC) = 0.1 IZ(DC) with AC frequency = 60Hz.
9. MAXIMUM ZENER CURRENT RATINGS (IZM
)
Values shown are based on the JEDEC rating of 400mW where the actual zener voltage (VZ) is known at the operating
point, the zener current may be increased and is limited by the derating curve.
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