1N957B 查看數據表（PDF） - Yea Shin Technology Co., Ltd
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1N957B Datasheet PDF : 9 Pages
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1N957B~1N992B
ELECTRICAL CHARACTERISTICS (TA = 25ºC unless otherwise noted, VF = 1.5 V Max @ IF = 200mA for all types)
Device
(Note 6.)
Device
Marking
Zener Voltage (Note 7.)
VZ (Volts)
@ IZT
Min
Nom
Max
(mA)
Zener Impedance (Note 8.)
ZZT @ IZT
ZZK @ IZK
(Ω)
(Ω) (mA)
Leakage Current
IR @ VR
(µA) (Volts)
IZM
(Note 9.)
(mA)
1N977B 1N977B 44.65
47
49.35
2.7
1N978B 1N978B 48.45
51
53.55
2.5
1N979B 1N979B 53.2
56
58.8
2.2
105
1500 0.25
5
125
1500 0.25
5
150
2000 0.25
5
35.8
6.4
38.8
5.9
42.6
5.4
1N980B 1N980B 58.9
62
65.1
2
1N981B 1N981B 64.6
68
71.4
1.8
185
2000 0.25
5
230
2000 0.25
5
47.1
4.9
51.7
4.5
1N982B 1N982B 71.25
75
78.75
1.7
270
2000 0.25
5
56
4.1
1N983B 1N983B 77.9
82
86.1
1.5
1N984B 1N984B 86.45
91
95.55
1.4
1N985B 1N985B
95
100
105
1.3
330
3000 0.25
5
400
3000 0.25
5
500
3000 0.25
5
62.2
3.7
69.2
3.3
76
3
1N986B 1N986B 104.5
110
115.5
1.1
750
4000 0.25
5
83.6
2.7
1N987B 1N987B 114
120
126
1
900
4500 0.25
5
1N988B 1N988B 123.5 130 136.5 0.95
1100 5000 0.25
5
91.2
2.5
98.8
2.3
1N989B 1N989B 142.5 150 157.5 0.85
1500 6000 0.25
5
114
2
1N990B 1N990B 152
160
168
0.8
1700 6500 0.25
5
121.6
1.9
1N991B 1N991B 171
180
189
0.68
2200 7100 0.25
5
136.8
1.7
1N992B 1N992B 190
200
210
0.65
2500 8000 0.25
5
152
1.5
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
ZZT 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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